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Plant cell wall signaling:from perception to adaptive responses 认领 引用
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作者 Mingtao Wang Zhihui Li +3 位作者 Minyuan Ran Yanqing Han Xin Liu Chunzhao Zhao 《Journal of Genetics and Genomics》 SCIE CAS CSCD 2026年第8期1382-1400,共19页
As a fundamental feature of plant cells,the cell wall sculpts plant architecture and governs environmental interactions.The cell wall is a dynamic matrix that exhibits both rigidity and plasticity,not only providing s... As a fundamental feature of plant cells,the cell wall sculpts plant architecture and governs environmental interactions.The cell wall is a dynamic matrix that exhibits both rigidity and plasticity,not only providing structural support but also serving as a critical signaling hub to regulate plant growth,development,and stress adaptation.Although long underappreciated,the signaling role of the cell wall has been brought to the forefront by recent breakthroughs,which have profoundly advanced our understanding of its importance and regulatory mechanisms.In this review,we summarize recent progress in cell wall signaling,particularly focusing on cell wall-derived signals,cell wall sensing mechanisms,and the functional roles of cell wall signaling in plant vegetative growth,reproduction,and abiotic stress responses. 展开更多
关键词 Cell wall Glycoprotein Receptor-like kinase Cell wall sensors Abiotic stress
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Revealing the genetic regulation of wood traits and secondary cell wall development in Ginkgo biloba:an integrated analysis from the perspectives of GWAS,TWAS,and WGCNA 认领 引用
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作者 Tianhui Gao Jiazhou Shang +5 位作者 Xiongjie Li Yidong Chen Jing Guo Fangfang Fu Fuliang Cao Guibin Wang 《Horticulture Research》 SCIE CSCD 2026年第6期183-201,共19页
Understanding the genetic and regulatory mechanisms underlying wood traits and secondary cell wall(ScW)development in Ginkgo biloba is crucial for improving wood quality.We identified key genes related to wood traits ... Understanding the genetic and regulatory mechanisms underlying wood traits and secondary cell wall(ScW)development in Ginkgo biloba is crucial for improving wood quality.We identified key genes related to wood traits and ScW development through integrated genome-wide association studies(GwAs),transcriptome-wide association studies(TWAs),and weighted gene co-expression network analysis(WGCNA).Cellulose biosynthesis in the ScW is catalyzed by the CesA4-CesA7-CesA8complex encoded by GbCesA4,GbCesA7,and GbCesA8A/8B.These CesA genes form a co-expression network with TUBA/TUBB and EG,indicating coordination among cellulose synthesis,cytoskeletal guidance,and cell wall remodeling.Additionally,loss of function of GbCesA8B caused only a slight reduction in cellulose content,supporting potential functional redundancy between GbCesA8A and GbCesA8B.For hemicellulose biosynthesis,GbCSLA9A/9B and IRX9/IRX14 were major contributors to mannan/glucomannan and xylan synthesis,respectively,and formed a co-expression network with UXS,UXE,IRX7,GXMT,and URGT,spanning nucleotide sugar supply,transport,and polymer elongation and modification.Moreover,MYB46 may regulate mannan/glucomannan biosynthesis in the SCW by activating CSLA9 transcription.For lignin biosynthesis,TWAS identified multiple genes involved in phenylalanine biosynthesis,phenylpropanoid metabolism,and lignin monomer polymerization,including ADT/PDT,PAL,and PER,as well as MYB91 and several bHLH genes that may positively regulate lignin accumulation.Furthermore,several transcription factors potentially involved in ScW development were identified,including GATA9 as a putative positive regulator,WRKY12 and HB15 as potential negative regulators,and ELF6,which may facilitate tracheid expansion.Our findings provide valuable insights into the genetic regulation of wood traits and ScW development in Ginkgo. 展开更多
关键词 genetic regulatory mechanisms ginkgo biloba secondary cell wall scw development Genetic Regulation improving wood qualitywe wood traits Secondary Cell Wall Development
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An extracellular miRNA reshapes cell wall integrity to prime systemic immunity in tomato 认领 引用
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作者 Yue Qiao Yu Xia +10 位作者 Jianfei Shi Zihan Song Liying Jin Lijie Xuan Haolin Yang Xiang Yu Ruoshi Wang Haiyan Liu Ali Zhang Jinfeng Chen Yingnan Hou 《Molecular Plant》 SCIE CAS CSCD 2026年第7期1531-1546,共16页
Plant small RNAs(sRNAs)are well established as intracellular regulators of gene expression and,more recently,as mediators of trans-kingdom RNA interference against invading pathogens.However,whether extracellular sRNA... Plant small RNAs(sRNAs)are well established as intracellular regulators of gene expression and,more recently,as mediators of trans-kingdom RNA interference against invading pathogens.However,whether extracellular sRNAs can modulate plant immunity through host-intrinsic mechanisms remains largely unexplored.In this study,using the tomato–Phytophthora capsici pathosystem,we systematically profiled apoplastic sRNAs during infection and revealed selective enrichment of specific sRNAs in the apoplast.Among these,we found that miR408b is strongly induced upon pathogen invasion and preferentially accumulated extracellularly.Rather than entering pathogen cells,apoplastic miR408b functions as a mobile immune signal,moving systemically to distal tissues.We identified SlGAUT12,which encodes a galacturonosyltransferase required for homogalacturonan biosynthesis,as a direct target of miR408b and a negative regulator of tomato immunity.miR408b-mediated silencing of SlGAUT12 compromises cell wall integrity and promotes the accumulation of immunogenic oligogalacturonides,thereby robustly activating damage-associated molecular pattern(DAMP)-triggered immunity.Together,our findings reveal a previously unrecognized role for apoplastic miRNAs in coordinating systemic plant immunity through cell wall remodeling and DAMP signaling,providing new molecular targets for the development of RNA-based disease control strategies. 展开更多
关键词 tomato Phytophthora apoplast miRNA systemic immunity cell wall integrity
Ultra-Strong,Fire-Resistant and Eco-Friendly Bamboo Composites Based on Cell Wall Polymer Decoration Engineering 认领 引用
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作者 Jiajian Wang Yanmei Li +7 位作者 Tongda Liu Weibing Xue Hongxing Yang Chunyan Yin Rong Liu Guanben Du Wenshuai Chen Long Yang 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2026年第1期478-490,共13页
Biomass structural materials can effectively address the issues of high energy consumption and environmental degradation brought by traditional engineering structural materials.However,natural structural materials oft... Biomass structural materials can effectively address the issues of high energy consumption and environmental degradation brought by traditional engineering structural materials.However,natural structural materials often suffer from drawbacks such as low mechanical performance and flammability.Therefore,this study has developed an ultra-strong fire-resistant bamboo composite(UFBC).Natural bamboo(NB)was used as the raw material.After delignification treatment,bamboo fibers are grafted with epoxy groups through in-situ chemical bonding.Subsequently,polymer chains underwent in-situ chemical cross-linking within the bamboo fiber framework,combined with reinforcement from nano silica,resulting in strengthened cell walls.In addition,the softened and expanded cell walls can facilitate the deposition of phosphate and borate salt on the cell walls,forming an N-P-B flame-retardant system within the system.The tensile strength(463 MPa vs NB 112 MPa)and flexural strength(655 MPa vs NB 157 MPa)of UFBC increased fourfold,with a Limiting Oxygen Index(LOI)of 54.4%.Compared to similar bamboo-based composite materials,UFBC exhibits superior environmental friendliness and sustainability throughout its lifecycle,with all 18 environmental factors being optimized(up to a 92%reduction).This study provides an important reference for the application of high-performance biomass structural materials in construction and industry. 展开更多
关键词 bamboo composites cell wall modification environmental benefit flame retardancy mechanical strength
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Promoter variation affects binding affinity of the transcription factor MdWRKY20 to the Cell Wall Invertase 1 gene and decreases fructose content in apple fruit 认领 引用
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作者 Zhengyang Wang Chunlei Zhang +3 位作者 Nanxiang Yang Jian Huang Fengwang Ma Mingjun Li 《Horticulture Research》 SCIE CSCD 2026年第3期153-164,共12页
Apple sweetness is primarily attributed to the high content and perceived sweet taste of fructose.A previous study used an F1 hybrid population of Malus×domestica['Honeycrisp'(HC)×'Qinguan'(Q... Apple sweetness is primarily attributed to the high content and perceived sweet taste of fructose.A previous study used an F1 hybrid population of Malus×domestica['Honeycrisp'(HC)×'Qinguan'(QG)(2n=34)]to identify quantitative trait loci(QTLs)for fructose content in fruit,revealing a stable QTL on linkage group(LG)O3 in the HC genetic map.In this study,gene ontology(GO)and kyoto encyclopedia of genes and genomes(KEGG)analyses of genes within this interval in combination with RNA-sequencing identified a cell wall invertase gene MdCwiNv1,whose expression was highly associated with the dynamic changes in fructose content in parental fruits.The coding sequences were conserved between the two cultivars,while the promoters carried 73 single nucleotide polymorphisms(SNPs).Based on transcriptional regulatory element prediction,a unique SNP,CWiNV1pro-1o80(A/C),located at-1o80 bp upstream of the ATG start codon in the HC-P1haplotype,was identified and predicted to affect the binding of the transcription factor MdwRKY20.β-glucuronidase(GUS)assays,chromatin immunoprecipitation-quantitative polymerase chain reaction(ChlP-qPcR),dual-luciferase assays,and genetic transformation confirmed that MdWRKY20 specifically binds to the CWiNV1pro-1o80(A)haplotype and significantly suppresses MdCwiNv1 expression,reduces CwiNV activity,and consequently decreases fructose accumulation.This study elucidated the functional role of MdcWiNV1 as a key gene regulating fructose content and clarified how natural mutations in its promoter influence gene expression and sugar composition. 展开更多
关键词 quantitative trait loci qtls promoter variation transcription factor mdwrky f hybrid population cell wall i binding affinity kyoto encyclopedia genes genomes kegg analyses
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Highly Elastic and Conductive Lamellar Wood Sponge via Cell Wall Reconfiguration Toward Smart Multifunctional Applications 认领 引用
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作者 Xin-jian Dai Xin Wang +2 位作者 Ji-hang Hu Pan Jiang Xiao-qing Wang 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第5期798-815,共18页
Three-dimensional porous foams and aerogels with high compressibilityand elasticity hold great promise for applications in pressure sensing,electromagnetic interference(EMI)shielding,and thermal insulation.However,the... Three-dimensional porous foams and aerogels with high compressibilityand elasticity hold great promise for applications in pressure sensing,electromagnetic interference(EMI)shielding,and thermal insulation.However,their widespread application is often hindered by compromised structural stabilityand inadequate fatigue resistance under repeated compression.Herein,asustainable“top-down”cell wall reconfiguration strategy is proposed to fabricatehighly elastic,fatigue-resistant,and electrically conductive lamellar wood spongefrom natural balsa wood.This strategy involves the conversion of the intrinsiccellular structure of wood into an arch-shaped lamellar architecture reinforcedby chemical cross-linking,followed by coating the lamellar scaffold with conductivepolypyrrole(PPy)via in situ polymerization.The resulting PPy-coatedcross-linked wood sponge(CWS@PPy)demonstrates reversible compressibility,excellent fatigue resistance(∼3.5%plastic deformation after 10,000 cyclesat 40%strain).The strain-induced conductivity changes in CWS@PPy enabletunable EMI shielding effectiveness under cyclic compression and also facilities high-sensitivity pressure sensing(0.72 kPa-1).Additionally,CWS@PPy exhibits a low through-plane thermal conductivity of 0.037 W m-1K-1,which can be dynamically tuned for adaptivethermal management.The proposed mechanically robust and conductive wood sponge provides a versatile and sustainable platform fornext-generation smart devices. 展开更多
关键词 Cell wall reconfiguration Wood sponge Electromagnetic interference shielding Thermal management Pressure sensing
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VvARF19 represses VvLBD13-mediated cell wall degradation to delay softening of grape berries 认领 引用 被引量：2
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作者 Meng Li Changjiang Nie +11 位作者 Shanshan He Zhirui Xue Jiajun Li Zhiqian Li Chang He Xianbo Zheng Bin Tan Jun Cheng Wei Wang Jidong Li Xia Ye Jiancan Feng 《Horticulture Research》 SCIE CSCD 2025年第2期281-293,共13页
Fruit softening directly impacts its storage life,transportability,and customer acceptance.Auxin plays a key role during fruit ripening,but the underlying mechanisms of how auxin regulates fruit softening remain uncle... Fruit softening directly impacts its storage life,transportability,and customer acceptance.Auxin plays a key role during fruit ripening,but the underlying mechanisms of how auxin regulates fruit softening remain unclear.In this study,we investigated the regulatory roles of auxin on berry cell wall degradation during grape(Vitis vinifera L.)softening.During grape berry development,berry firmness and auxin content both firstly increase and then decrease,and peaks occur 4–6 weeks after full blooming.Exogenous NAA(α-naphthalene acetic acid,a synthetic auxin)treatment inhibits berry softening by delaying propectin,cellulose,and hemicellulose degradation,which maintains cell wall integrity in the grape flesh.Weighted gene co-expression network analysis(WGCNA)showed that VvLBD13,correlated with VvARF19,could be a key gene in this delaying of berry softening,and is involved in auxin signal transduction and cell wall degradation metabolism.Overexpression and transient overexpression of VvLBD13 in tomato or in grape berry indicate that VvLBD13 accelerates hemicellulose degradation by binding the promoters of VvXTH10(xyloglucan endotransglucosylase/hydrolase 10)and VvEXPLA1(expansion-like A1),which results in rapid softening after veraison.Collectively,this research furnishes an exhaustive understanding of the auxin-driven regulatory mechanisms of grape berry softening. 展开更多
关键词 softening vvarf vvlbd fruit ripening berry cell wall degradation auxin cell wall degradation fruit ripeningbut
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New insights into plant cell wall functions 认领 引用
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作者 Lanjun Zhang Chengxu Gao +5 位作者 Yihong Gao Hanlei Yang Meiru Jia Xiaohong Wang Baocai Zhang Yihua Zhou 《Journal of Genetics and Genomics》 SCIE CAS CSCD 2025年第11期1308-1324,共17页
The plant cell wall is an extremely complicated natural nanoscale structure composed of cellulose microfibrils embedded in a matrix of noncellulosic polysaccharides,further reinforced by the phenolic compound lignins ... The plant cell wall is an extremely complicated natural nanoscale structure composed of cellulose microfibrils embedded in a matrix of noncellulosic polysaccharides,further reinforced by the phenolic compound lignins in some cell types.Such a network formed by the interactions of multiscale polymers actually reflects functional form of the cell wall to meet the requirements of plant cell functionalization.Therefore,how plants assemble cell wall functional structure is fundamental in plant biology and critical for crop trait formation and domestication as well.Due to the lack of effective analytical techniques to characterize this fundamental but complex network,it remains difficult to establish direct links between cell-wall genes and phenotypes.The roles of plant cell walls are often underestimated as indirect.Over the past decades,many genes involved in cell wall biosynthesis,modification,and remodeling have been identified.The application of a variety of state-of-the-art techniques has made it possible to reveal the fine cell wall networks and polymer interactions.Hence,many exciting advances in cell wall biology have been achieved in recent years.This review provides an updated overview of the mechanistic and conceptual insights in cell wall functionality,and prospects the opportunities and challenges in this field. 展开更多
关键词 Cell wall Cell growth Mechanical strength Cell wall patterning Wall integrity Cellulose Pectins Xylans
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Glycosylphosphatidylinositol(GPI)anchoring controls cell wall integrity,immune evasion and surface localization of ChFEM1 for infection of Cochlibolus heterostrophus 认领 引用
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作者 Hong Hu Tiangu Liu +5 位作者 Xinyun Xie Fuyan Li Caiyun Liu Jintao Jiang Zhigang Li Xiaolin Chen 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2025年第11期4310-4323,共14页
Glycosylphosphatidylinositol(GPI)anchoring represents a fundamental post-translational modification in eukaryotic cells.In fungi,this modification facilitates diverse biological functions through protein targeting to ... Glycosylphosphatidylinositol(GPI)anchoring represents a fundamental post-translational modification in eukaryotic cells.In fungi,this modification facilitates diverse biological functions through protein targeting to the cell wall,yet research on its roles in plant pathogenic fungi remains limited.This study elucidates the function of GPI anchoring in the maize fungal pathogen Cochlibolus heterostrophus.The research demonstrates widespread accumulation of GPI-anchored proteins in hyphae,appressorium and infection hyphae of C.heterostrophus.Deletion of ChGPI7,encoding a crucial enzyme in GPI anchor biosynthesis,substantially reduced vegetative growth,conidiation,and virulence through impaired appressorium formation and invasive growth.The ΔChgpi7 mutants exhibited marked deficiencies in cell wall integrity,leading to decreased stress resistance.Both ChGPI7 deletion and hydro fluoric acid(HF)pyridine treatment eliminated cell wall GPI-anchored proteins and exposed chitin,indicating that GPI-anchored proteins shield chitin from host immune recognition.Analysis identified 124 predicted GPI-anchored proteins in C.heterostrophus,including the putative cell wall glycoprotein ChFEM1.The deletion of ChFEM1 similarly reduced virulence and compromised infection structures and cell wall integrity.Additionally,ChGPI7 influenced both the cell wall localization and protein abundance of ChFEM1.These findings demonstrate that GPI anchoring mediates cell wall integrity and immune evasion during C.heterostrophus infection. 展开更多
关键词 Cochlibolus heterostrophus GPI anchor immune evasion cell wall integrity cell wall protein fungal infection
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Roles of extracellular polymeric substances in arsenic accumulation and detoxification by cell wall intact and mutant strains of Chlamydomonas reinhardtii 认领 引用 被引量：1
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作者 Sadiq Naveed Qingnan Yu +3 位作者 Katarzyna Szewczuk-Karpisz Chunhua Zhang Shafeeq-Ur Rahman Ying Ge 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2025年第6期142-154,共13页
Arsenic(As)pollution seriously threatens human and ecological health.Microalgal cell wall and extracellular polymeric substances(EPS)are known to interactwith As,but their roles in the As resistance,accumulation and s... Arsenic(As)pollution seriously threatens human and ecological health.Microalgal cell wall and extracellular polymeric substances(EPS)are known to interactwith As,but their roles in the As resistance,accumulation and speciation inmicroalgae remain unclear.Here,we used two strains of Chlamydomonas reinhardtii,namely CC-125(wild type)and CC-503(cell walldeficientmutant),to examine the algal growth,EPS synthesis,As adsorption,absorption and transformation under 10–1000μg/L As(III)and As(V)treatments for 96 h.In both strains,the As absorption increased after the EPS removal,but the growth,As adsorption,and transformation of C.reinhardtii declined.The CC-125 strain was more tolerant to As stress and more efficient in EPS production,As accumulation,and redox transformation than CC-503,irrespective of EPS presence or absence.Three-dimension excitation-emission matrix(3DEEM)and attenuated total reflectance infrared spectroscopy(ATR-IR)analyses showed that As was bound with functional groups in the EPS and cell wall,such as-COOH,NH and-OH in proteins,polysaccharides and amino acids.Together,this study demonstrated that EPS and cell wall acted as barriers to lower the As uptake by C.reinhardtii.However,the cell wall mutant strain wasmore susceptible to As toxicity due to lower EPS induction and higher As absorption. 展开更多
关键词 Extracellular polymeric substances Cell wall Arsenic Accumulation Speciation Microalgae
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Yeast cell wall polysaccharides accelerate yet in-feed antibiotic delays intestinal development and maturation via modulating gut microbiome in chickens 认领 引用 被引量：1
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作者 Fangshen Guo Jianing Qiao +6 位作者 Zeqiong Hu Jia Huang Ruichen Bi Waseem Abbas Wenrui Zhen Yuming Guo Zhong Wang 《Journal of Animal Science and Biotechnology》 SCIE CAS CSCD 2025年第3期1353-1367,共15页
Background It is important to promote intestinal development and maturation of chicks for feed digestion and utilization,intestinal health,and disease resistance.This study aimed to investigate the effects of dietary ... Background It is important to promote intestinal development and maturation of chicks for feed digestion and utilization,intestinal health,and disease resistance.This study aimed to investigate the effects of dietary yeast cell wall polysaccharides(YCWP)addition on intestinal development and maturation of chickens and its potential action mechanism.Methods 180 one-day-old male Arbor Acres broilers were randomly assigned to three groups containing control(basal diets without any antibiotics or anticoccidial drug),bacitracin methylene disalicylate(BMD)-treated group(50 mg/kg)and YCWP-supplemented group(100 mg/kg).Results Compared with control group,in-feed antibiotic BMD continuous administration significantly decreased crypt depth(d 21)and villus height(d 42)along with mucosal maltase activity(d 42)in the ileum(P<0.05).Also,BMD markedly downregulated gene expression levels ofβ-catenin,lysozyme,occludin and FABP-2(d 21)and innate immune related genes CD83 and MHC-I mRNA levels(d 42,P<0.05),and decreased goblet cell counts in the ileum of chickens(d 21 and d 42,P<0.05).While,TLR-2,TLR-6 and iNOS mRNA abundances were notably upregulated by BMD treatment(d 42,P<0.05).Nevertheless,dietary YCWP addition significantly increased the ratio of villus height to crypt depth(d 21),villus surface area(d 21 and d 42),ileal alkaline phosphatase and maltase activities as well as goblet cell(d 21 and d 42)and IgA-producing plasma cell numbers as compared to BMD treatment(d 21,P<0.05).YCWP addition also upregulated gene expression levels of Lgr5,Wnt/β-catenin signaling pathway related gene(Wnt3,β-catenin,d 21;β-catenin,d 42),intestinal cells proliferation marker Ki-67 and barrier function related genes(occludin,d 21 and d 42,P<0.05).Moreover,YCWP significantly increased antigen presenting cell marker related genes(MHC-II,d 21;CD83 and MHC-I,d 42),TLR-1,TLR-2 and TLR-6 mRNA levels(d 21,P<0.05).Cecal microbiome analysis showed that YCWP addition obviously improved cecal microbial composition,as indicated by increasing relative abundance of Fournierella,Psychrobacter and Ruminiclostridium on d 21,and Alistipes and Lactobacillus on d 42,which were positively related with gut development and maturation related indexes(P<0.05).Conclusion Collectively, YCWP promoted yet antibiotic BMD delayed intestinal morphological and immunologicaldevelopment linked with modulating gut microbiome in chickens. 展开更多
关键词 Antibiotic Broiler chickens Gut development Microflora Yeast cell wall polysaccharides
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Abscisic acid reduces Cd accumulation by regulating Cd transport and cell wall sequestration in rice 认领 引用 被引量：1
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作者 Zhijun Xu Jiashi Peng +9 位作者 Yanlei Fu Jing Zhao Yan Peng Bohan Liu Xujun Hu Yuchuan Liu Meijuan Duan Nenghui Ye Zhenxie Yi Shuan Meng 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2025年第10期3703-3718,共16页
Cadmium(Cd)uptake by rice plants and its subsequent movement through food chains pose a notable risk to the health of both plants and humans.Therefore,understanding the fundamental mechanisms underlying the uptake and... Cadmium(Cd)uptake by rice plants and its subsequent movement through food chains pose a notable risk to the health of both plants and humans.Therefore,understanding the fundamental mechanisms underlying the uptake and movement process is essential.Through transcriptome analysis,we found that numerous abscisic acid(ABA)-related genes responded to Cd stress.Exogenous application of ABA significantly reduced Cd accumulation in the shoots and roots of rice plants.The increased ascorbate peroxidase(APX)enzyme activity,decreased H2O2 content,and elevated Cd tolerance index collectively suggest that ABA may mitigate the toxicity of Cd in rice plants.Further study revealed that exogenous ABA reduced Cd accumulation by regulating Cd transport and cell wall sequestration.Consistently,mutation of the ABA signaling factor OsABI5 resulted in a significant increase in Cd accumulation in shoots.Moreover,foliar spraying of ABA during the grain-filling stage significantly reduced Cd accumulation in rice grains,which was attributed mainly to decreased Cd uptake and the inhibition of Cd transportation from roots to shoots and from leaves to grains.These findings elucidate the underlying mechanisms of the ABA-mediated response to Cd stress in rice and provide a practical reference for coping with Cd pollution in farmlands. 展开更多
关键词 rice Cd accumulation Cd toxicity abscisic acid cell wall
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The KNAT3a1-WND2A/3A module positively regulates fiber secondary cell wall biosynthesis in Populus tomentosa 认领 引用 被引量：1
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作者 Kuan Sun Di Fan +7 位作者 Yingying Peng Chang Liu Lingfei Kong Ting Lan Xianqiang Wang Dan Li Chaofeng Li Keming Luo 《Horticultural Plant Journal》 SCIE CAS CSCD 2025年第3期1326-1340,共15页
The secondary cell wall(SCW)is essential for plant growth and development in vascular plants,and its biosynthesis is mainly controlled by a complex hierarchical regulatory network involving multiple transcription fact... The secondary cell wall(SCW)is essential for plant growth and development in vascular plants,and its biosynthesis is mainly controlled by a complex hierarchical regulatory network involving multiple transcription factors(TFs)at the transcription level.However,TFs that specifically regulate secondary xylem have not been widely reported.In this study,we described a poplar KNOTTED1-like homeobox(KNOX)TF PtoKNAT3a1,which was mainly expressed in the expanding xylem cells of stems.PtoKNAT3a1 overexpression caused fiber SCW thickening and increased all measured SCW compositions by upregulating the expression of SCW-biosynthetic genes and-associated TFs,but had no effect on the vessels of SCW.The opposite phenotype was observed in the PtoKNAT3a1-knockout lines.Hence,we further demonstrated that Pto-KNAT3a1 could physically interact with the NAC master switches PtoWND2A/3A to enhance the expression of downstream MYB TFs and SCW biosynthetic genes(including PtoMYB20,PtoMYB21,PtoMYB90,PtoCoMT2,PtoGT43B and PtoCesA8).Meanwhile,the studies also demonstrate that the KNAT3 has functional differentiation in xylem development.Taken together,these data suggest that the KNAT3a1-WND2A/3A module positively regulates fiber development of the secondary xylem in poplar via the WND2A/3A-mediated hierarchical regulatory network,and supplies useful information for fiber SCW formation.The research not only deepens the understanding of the hierarchical regulatory network affecting SCW formation but also supplies genetic resources and molecular targets for plant fiber utilization. 展开更多
关键词 Fiber secondary cell wall KNAT transcription factor Secondary xylem Module Hierarchical regulatory network
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Cadmium detoxification by Stenotrophomonas sp.via cell wall exfoliation and regeneration mediated by mtgA 认领 引用
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作者 Jianming XU Tong WANG +6 位作者 Jiawen ZHANG Haoran GUAN Zhenmei LÜ Xin YAN Randy A.DAHLGREN Jizheng HE Xingmei LIU 《Pedosphere》 SCIE CAS CSCD 2025年第5期783-795,共13页
Understanding bacterial strategies for coping with heavy metal stress is essential for elucidating their resilience in contaminated environments.However,whether cell wall exfoliation contributes to bacterial tolerance... Understanding bacterial strategies for coping with heavy metal stress is essential for elucidating their resilience in contaminated environments.However,whether cell wall exfoliation contributes to bacterial tolerance under heavy metal stress,such as cadmium(Cd)exposure,remains unclear and requires further investigation.In this study,we reveal a novel self-protective mechanism in Stenotrophomonas sp.H225 isolated from a Cd-contaminated farmland soil,which underwent controlled cell wall exfoliation and regeneration in response to Cd stress up to 200 mg L-1.Transmission electron microscopy and energy-dispersive X-ray spectroscopy analyses revealed that the exfoliated cell wall fragments served as extracellular Cd sinks,thereby reducing intracellular Cd accumulation.Fourier-transform infrared spectroscopy and enzyme-linked immunosorbent assay indicated progressive peptidoglycan(PG)degradation,with exfoliated PG concentration in solution increasing from 148 ng mL-1 at 0 mg L-1 Cd to 240 ng mL-1 at 200 mg L-1 Cd.This degradation was counteracted by the compensatory upregulation of PG biosynthesis genes,with the enrichment ratio reaching up to 0.83,facilitating cell wall reconstruction.Transcriptomic analysis and gene knockout experiments identified mtgA(encoding a monofunctional transglycosylase)as a key determinant in cell wall repair and Cd resistance.To our knowledge,this is the first mechanistic evidence that bacteria can mitigate heavy metal toxicity through dynamic cell wall remodeling involving exfoliation and regeneration.This finding enhances our understanding of microbial survival strategies under environmental stress and highlights potential targets for engineering metal-tolerant strains for bioremediation applications. 展开更多
关键词 bioremediation Cd resistance Cd stress cell wall remodeling detoxification strategy gene knockout heavy metal pbpC gene peptidoglycan
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ANAC050 confers aluminium resistance by cooperating with secretion of organic acids and accumulation of cell wall hemicelluloses in plants 认领 引用
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作者 Ye TAO Su LI +6 位作者 Yusong LIU Rui GUO Changzhao CHEN Jiu HUANG Qiang ZHANG Renfang SHEN Xiaofang ZHU 《Pedosphere》 SCIE CAS CSCD 2025年第2期338-351,共14页
Aluminium(Al)toxicity is one of the key factors limiting crop output in acidic soils,but until now little has been known about how Al is regulated transcriptionally in plants.This study identified Arabidopsis NAC tran... Aluminium(Al)toxicity is one of the key factors limiting crop output in acidic soils,but until now little has been known about how Al is regulated transcriptionally in plants.This study identified Arabidopsis NAC transcription factor ANAC050 in the regulation of Al tolerance.ANAC050 was located in the nucleus and displayed constitutive expression in the silique,flower,leaf,stem,and root,despite the fact that Al stress decreased its expression and protein accumulation.When compared with the Columbia ecotype wild-type,anac050 mutants that lacked function of ANAC050 exhibited Al sensitivity phenotype,while transgenic lines that overexpressed ANAC050 showed an Al-resistant phenotype,indicating the favorable influence of ANAC050 on preserving Al tolerance in plants.Further analysis indicated that anac050 mutants accumulated more Al in roots,implying that ANAC050 may confer a potential operation of an Al exclusion mechanism.Interestingly,anac050 mutants had down-regulated the expression of the genes encoding MULTIDRUG AND TOXIC COMPOUND EXTRUSION(MATE)and AL-ACTIVATED MALATE TRANSPORTER(ALMT1),which were involved in the secretion of citrate and malate,even though there was no evidence of a direct interaction between them,suggesting ANAC050 may mediate the secretion of citrate and malate indirectly.Together with the decreased hemicellulose content,lower Al content was also discovered in root cell walls and hemicelluloses of anac050 mutants,pointing to a potential interaction between ANAC017 and XYLOGLUCAN ENDOTRANSGLUCOSYLASE/HYDROLASE(XTH).Although there was no evidence of a direct interaction between ANAC050 and XTH31,it is worth mentioning that the expression of XTH31,which is essential for xyloglucan modification,was down-regulated in anac050 mutants irrespective of the amount of Al given.In conclusion,our findings showed that ANAC050 contributed to Al resistance by indirect control of the release of organic acids and the accumulation of cell wall hemicelluloses. 展开更多
关键词 Al accumulation Al toxicity Arabidopsis cell wall fixation sensitive phenotype transcription factor transgenic line
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Betula platyphylla glucosyltransferase BpGT14;6 is essential for cell wall development and stress response 认领 引用
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作者 Xiaohui Chen Ruijia Zhang +7 位作者 Jialin Yan Xinying Jia Ronghua Liang Fengkun Sun Leilei Li Minghao Ma Yaguang Zhan Fansuo Zeng 《Horticultural Plant Journal》 SCIE CAS CSCD 2025年第6期2267-2280,共14页
Glycosyltransferases(GTs)constitute a diverse family of synthetic polysaccharides with important roles in plant growth and development.This study characterized the GT14 family gene BpGT14;6 of birch(Betula platyphylla... Glycosyltransferases(GTs)constitute a diverse family of synthetic polysaccharides with important roles in plant growth and development.This study characterized the GT14 family gene BpGT14;6 of birch(Betula platyphylla Suk.).BpGT14;6 was highly expressed in the xylem and stem of birch plants.Subcellular localization analysis suggested that BpGT14;6 was located in the Golgi apparatus.RNA interference(RNAi)silencing of BpGT14;6 revealed lower lignin,hemicellulose,and pectin contents compared to wild type(WT)plants.Following treatment with abscisic acid(ABA),compared to WT plants,RNAi-BpGT14;6 plants were more sensitive to ABA,suffered more membrane lipid damage,and accumulated more reactive oxygen species.The inhibition of BpGT14;6 expression narrowed the birch xylem and thinned the cell wall,and increased the expression of multiple ABA pathway-related genes in birch under ABA treatment.Compared to WT plants,RNAi-BpGT14;6 plants showed increased tolerance to drought stress.Promoter analysis revealed that BpGT14;6 is involved in hormone regulation and adaptation to adversity.Using the 1156 bp BpGT14;6 promoter as bait,two potential transcription factors,BpWRKY1 and BpARF2,were identified through Y1H screening that may regulate its expression.EMSA confirmed that BpWRKY1 and BpARF2 can directly bind to the W-BOX and AuxRE cis-acting elements on the BpGT14;6 promoter,respectively.The collective results suggest that BpGT14;6 affects birch xylem and cell wall development by affecting lignin,hemicellulose,and pectin synthesis,and participates in birch adversity adaptation. 展开更多
关键词 Betula platyphylla Suk Glycosyltransferase 14 Cell wall Abscisic acid(ABA) Drought stress
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Light water loss delays simulation of mechanical injuries from transportation vibration of Actinidia arguta by inhibiting cell wall metabolism 认领 引用
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作者 Xinqi Liu Xinyu Yu +4 位作者 Yuhan Wu Baodong Wei Qian Zhou Shunchang Cheng Yang Sun 《Technology in Horticulture》 2025年第1期180-187,共8页
This study aimed to investigate the effect of light water loss on the mechanical injury of Actinidia arguta fruit by regulating cell wall metabolism.By comparing the effect of water loss on mechanical injury of Actini... This study aimed to investigate the effect of light water loss on the mechanical injury of Actinidia arguta fruit by regulating cell wall metabolism.By comparing the effect of water loss on mechanical injury of Actinidia arguta fruit after simulated transport vibration,the changes in sensory quality and cell wall metabolism during storage were measured,compared with non-water-loss simulated transport vibration as the control.S1 and S2 of hardness after light water loss were 11.53%and 13.3%lower than the CK group for the same period,and the decay rate was 1.5 and 1.36 times higher than the CK group.Light water loss slowed the growth rate of pectin and cellulose and decreased the activities of polygalacturonase(PG),pectin methylesterase(PME),pectinlyase(PL),cellulase,β-glucosidase(β-Glu),andβ-galactosidase(β-Gal).Electron and transmission microscopy imaging show that light water loss helps maintain cell wall structure and slows down cell wall degradation.The results indicate that light water loss alleviates post-harvest mechanical injury in Actinidia arguta by regulating cell wall metabolism and inhibiting cell wall degradation,thereby contributing to the maintenance of cell structural integrity to maintain fruit quality. 展开更多
关键词 water loss actinidia arguta fruit simulated transport vibration sensory quality simulated transport vibrationthe ck gr light water loss cell wall metabolism
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In vivo and ex vivo study on cell wall components as part of the network in tomato fruit during the ripening process 认领 引用 被引量：1
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作者 Nataliia Kutyrieva-Nowak Agata Leszczuk +6 位作者 Dusan Denic Samia Bellaidi Konstantinos Blazakis Petroula Gemeliari Magdalena Lis Panagiotis Kalaitzis Artur Zdunek 《Horticulture Research》 SCIE CSCD 2024年第7期236-252,共17页
Ripening is a process involving various morphological,physiological,and biochemical changes in fruits.This process is affected by modifications in the cell wall structure,particularly in the composition of polysacchar... Ripening is a process involving various morphological,physiological,and biochemical changes in fruits.This process is affected by modifications in the cell wall structure,particularly in the composition of polysaccharides and proteins.The cell wall assembly is a network of polysaccharides and proteoglycans named the arabinoxylan pectin arabinogalactan protein1(APAP1).The complex consists of the arabinogalactan protein(AGP)core with the pectin domain including arabinogalactan(AG)type II,homogalacturonan(HG),and rhamnogalacturonan I(RG-I).The present paper aims to determine the impact of a disturbance in the synthesis of one constituent on the integrity of the cell wall.Therefore,in the current work,we have tested the impact of modified expression of the SlP4H3 gene connected with proline hydroxylase(P4H)activity on AGP presence in the fruit matrix.Using an immunolabelling technique(CLSM),an immunogold method(TEM),molecular tools,and calcium mapping(SEM-EDS),we have demonstrated that disturbances in AGP synthesis affect the entire cell wall structure.Changes in the spatio-temporal AGP distribution may be related to the formation of a network between AGPs with other cell wall components.Moreover,the modified structure of the cell wall assembly induces morphological changes visible at the cellular level during the progression of the ripening process.These results support the hypothesis that AGPs and pectins are required for the proper progression of the physiological processes occurring in fruits. 展开更多
关键词 cell wall assembly arabinogalactan protein agp core cell wall structureparticularly ex vivo study pectin domain cell wall components arabinoxylan pectin vivo study
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Stem lodging Resistance-1 controls stem strength by positively regulating the biosynthesis of cell wall components in Capsicum annuum L. 认领 引用 被引量：3
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作者 Qing Li Canfang Fu +10 位作者 Bozhi Yang Huiyang Yu Huan He Qing Xu Wu Miao Rongyun Liu Wenchao Chen Zhuqing Zhang Xuexiao Zou Bowen Hu Lijun Ou 《Horticulture Research》 SCIE CSCD 2024年第8期208-222,共15页
Lodging presents a significant challenge in cultivating high-yield crops with extensive above-ground biomass,yet the molecular mechanisms underlying this phenomenon in the Solanaceae family remain largely unexplored.I... Lodging presents a significant challenge in cultivating high-yield crops with extensive above-ground biomass,yet the molecular mechanisms underlying this phenomenon in the Solanaceae family remain largely unexplored.In this study,we identified a gene,CaSLR1(Capsicum annuum Stem Lodging Resistance 1),which encodes a MYELOBLASTOSIS(MYB)family transcription factor,from a lodgingaffected C.annuum EMS mutant.The suppression of CaSLR1 expression in pepper led to notable stem lodging,reduced thickness of the secondary cell wall,and decreased stem strength.A similar phenotype was observed in tomato with the knockdown of SlMYB61,the orthologous gene to CaSLR1.Further investigations demonstrated that CaNAC6,a gene involved in secondary cell wall(SCW)formation,is co-expressed with CaSLR1 and acts as a positive regulator of its expression,as confirmed through yeast one-hybrid,dual-luciferase reporter assays,and electrophoretic mobility shift assays.These findings elucidate the CaNAC6-CaSLR1 module that contributes to lodging resistance,emphasizing the critical role of CaSLR1 in the lodging resistance regulatory network. 展开更多
关键词 molecular mechanisms cell wall biosynthesis secondary cell wall transcription factor stem lodging myb family stem lodging resistance gene expression
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Deciphering the intricate hierarchical gene regulatory network:unraveling multi-level regulation and modifications driving secondary cell wall formation 认领 引用 被引量：5
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作者 Zhigang Wei Hairong Wei 《Horticulture Research》 SCIE CSCD 2024年第2期344-366,共23页
Wood quality is predominantly determined by the amount and the composition of secondary cell walls(SCWs).Consequently,unraveling the molecular regulatory mechanisms governing SCW formation is of paramount importance f... Wood quality is predominantly determined by the amount and the composition of secondary cell walls(SCWs).Consequently,unraveling the molecular regulatory mechanisms governing SCW formation is of paramount importance for genetic engineering aimed at enhancing wood properties.Although SCW formation is known to be governed by a hierarchical gene regulatory network(HGRN),our understanding of how a HGRN operates and regulates the formation of heterogeneous SCWs for plant development and adaption to ever-changing environment remains limited.In this review,we examined the HGRNs governing SCW formation and highlighted the significant key differences between herbaceous Arabidopsis and woody plant poplar.We clarified many confusions in existing literatures regarding the HGRNs and their orthologous gene names and functions.Additionally,we revealed many network motifs including feed-forward loops,feed-back loops,and negative and positive autoregulation in the HGRNs.We also conducted a thorough review of post-transcriptional and post-translational aspects,protein-protein interactions,and epigenetic modifications of the HGRNs.Furthermore,we summarized how the HGRNs respond to environmental factors and cues,influencing SCW biosynthesis through regulatory cascades,including many regulatory chains,wiring regulations,and network motifs.Finally,we highlighted the future research directions for gaining a further understanding of molecular regulatory mechanisms underlying SCW formation. 展开更多
关键词 plant development hierarchical gene regulatory network secondary cell wall formation hierarchical gene regulatory network hgrn our wood quality secondary cell walls scws consequentlyunraveling molecular regulatory mechanisms herbaceous Arabidopsis genetic engineering
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