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CsMYB75–CsTT8–CsTTG1 protein complex activates CsANS3 for anthocyanin biosynthesis in purple-leaf tea plants 认领 引用
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作者 Li Zhang Hui Xie +13 位作者 Yue Hu Hui Wang Linlin Xu Yongning Tao Lingling Tao Hongrong Chen Xueming Ma Honglian Gu Deyu Xie Jianbing Hu Shengrui Liu Junyan Zhu Kun Dong Chaoling Wei 《Horticultural Plant Journal》 SCIE CAS CSCD 2026年第8期1985-1989,共5页
Purple-leaf tea plants are rich in anthocyanins,which have antioxidant,antimutagenic,and antiaging activities.Extensive research has elucidated the anthocyanin biosynthetic pathways and regulatory role of CsMYB75 in c... Purple-leaf tea plants are rich in anthocyanins,which have antioxidant,antimutagenic,and antiaging activities.Extensive research has elucidated the anthocyanin biosynthetic pathways and regulatory role of CsMYB75 in common green-leaf tea plants;however,the precise molecular mechanism through which CsMYB75 regulates anthocyanin synthesis in purple-leaf tea plants has yet to be fully elucidated.In this study,RNA-seq was performed on the buds and the first to fourth leaves of the purple-leaf tea cultivar‘Zijuan’(Camellia sinensis var.assamica).Weighted gene coexpression network analysis(WGCNA)revealed that the expression of CsMYB75 was not only significantly correlated with anthocyanin accumulation but also strongly correlated with the expression of the anthocyanin synthase gene CsANS3.Further experiments demonstrated that CsMYB75 binds to the MYB-binding site(CAACCA)in the CsANS3 promoter region and positively regulates its expression.Moreover,the protein–protein interactions of CsMYB75,CsTT8,and CsTTG1 resulted in the formation of a multimeric complex(CsMYB75–CsTT8–CsTTG1).This complex exhibits the strongest transcriptional activation of the CsANS3 promoter,with activation levels that are 4.1–4.8-fold higher than those observed with any pairwise combination of the three transcription factors.Overall,the results of this study elucidate the mechanism of CsMYB75 in regulating anthocyanin biosynthesis in purple-leaf tea plants during different developmental stages and provide valuable genetic resources and a theoretical foundation for the molecular breeding and metabolic engineering of tea plants. 展开更多
关键词 csmyb transcriptional activation WGCNA molecular breeding molecular mechanism anthocyanin biosynthesis csans purple leaf tea plants
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Purple red rice bran anthocyanins ameliorate inflammatory response induced by lipopolysaccharide from Porphyromonas gingivalis in RAW264.7 cells via suppressing NF-κB and AP-1 signaling pathways 认领 引用
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作者 Jilan Jiao Junwei Zhao +4 位作者 Ting Chen Liwei Zeng Xiangke Ci Jianhua Xie Xiaoyan Ou 《Food Science and Human Wellness》 SCIE CAS CSCD 2026年第4期1877-1887,共11页
Periodontitis,a persistent inflammatory condition,targets the gums and periodontal structures,negatively impacting health.Systemic and local antimicrobials are often used to treat periodontitis,but they may lead to ad... Periodontitis,a persistent inflammatory condition,targets the gums and periodontal structures,negatively impacting health.Systemic and local antimicrobials are often used to treat periodontitis,but they may lead to adverse effects such as drug resistance and ecological imbalance.As natural water-soluble pigment,anthocyanins have been reported to be an effective antiinflammatory,antiobesity,anticancer,antimicrobial and so on.The purpose of the study was to elucidate the anti-inflammatory effects and potential molecular mechanisms of purple red rice bran anthocyanins(PRBA)on RAW264.7 cells induced by lipopolysaccharide from Porphyromonas gingivalis(Pg-LPS).The results indicated that PRBA inhibited the expression of i NOS and COX-2 in RAW264.7 cells,reduced the level of NO,TNF-α,and IL-6,while increasing the expression of Arg-1 and the production of IL-10 in RAW264.7 cells.Among them,cyanidin-3-glucoside and peonidin-3-glucoside,the 2 main anthocyanin glycosides in PRBA,also had the same effects.RNA-seq results revealed that there were 1840 differentially expressed genes(DEGs)after PRBA treatment,with 1263 upregulated and 577 downregulated.Western blot also confirmed that PRBA significantly inhibited the activation of NF-κB and AP-1 in RAW264.7 cells.In summary,these findings suggested that PRBA inhibited the expression of proinflammatory cytokines in RAW264.7 cells induced by Pg-LPS through the NF-κB and AP-1 pathways,which providing its potential application in the treatment of periodontitis for anti-inflammatory effects. 展开更多
关键词 Anthocyanins Purple red rice bran Periodontitis Porphyromonas gingivalis-lipopolysaccharide RNA-Seq
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Trade-offs and synergies of ecosystem services in the hilly purple soil area of southwestern China:Implications for sustainable land management 认领 引用 被引量：1
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作者 XU Yuehang TANG Qiang +7 位作者 ZHANG Haozhe DUAN Dingqi CHEN Peng LUO Yuchuan WEI Jie HE Xiubin YANG Hong COLLINS L.Adrian 《Journal of Mountain Science》 SCIE CSCD 2025年第6期2145-2158,共14页
The hilly purple soil area is a major grainproducing region in southwestern China,where noticeable land use change has occurred along with socio-economic development over recent decades.Degradation of ecosystem servic... The hilly purple soil area is a major grainproducing region in southwestern China,where noticeable land use change has occurred along with socio-economic development over recent decades.Degradation of ecosystem services(ESs)is therefore widespread.Understanding the interactions among ESs in the case of anthropogenic disturbance and environmental change is needed for sustainable land management.Here,we analyze the synergiesradeoffs and bundles between ESs in this region between 1990-2015.By using the InVEST model,Geo-Detector method,and multi-source datasets,we investigated the socio-ecological drivers that dominate the dynamics of ESs.We found that ESs exhibit divergent temporal trends;food production shows a rising trend,habitat quality a declining trend,and water yield a highly variable response.Provisioning services,especially food production,have common and enduring trade-offs with other ESs.Mutual transformation occurred between ES bundles with water related ES bundles experiencing a weakness in synergistic effects.ESs that are predominantly driven by ecological drivers have gradually become controlled by social drivers which suggests the impacts of human activities in ESs are gradually increasing.Thus,integrated management policies such as land consolidation are needed to coordinate management.This study provides strategies based on ES bundles with different functional and management priorities.Also,integrating vertical zoning into land management to ensure sustainable agricultural production in lowland basins. 展开更多
关键词 Land use change Goods and services Socioeconomic drivers Hilly purple soil area
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Targeted metabolome and transcriptome analysis reveals the key metabolites and genes influencing blue-purple colour development in Clematis lanuginosa flowers 认领 引用
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作者 Renjuan Qian Youju Ye +3 位作者 Xiaohua Ma Handong Gao Qingdi Hu Jian Zheng 《Ornamental Plant Research》 2025年第1期462-470,共9页
Clematis lanuginosa,a valuable ornamental plant in Zhejiang Province,China,produces flowers that are blue-purple,a rare flower colour.In this study,to explore the anthocyanin synthesis mechanism involved in flower col... Clematis lanuginosa,a valuable ornamental plant in Zhejiang Province,China,produces flowers that are blue-purple,a rare flower colour.In this study,to explore the anthocyanin synthesis mechanism involved in flower colour formation in C.lanuginosa,metabolome,and transcriptome sequencing was performed at six flower development stages.Metabolome analysis revealed 25 anthocyanin compounds and 22 differentially expressed metabolites.Cyanidin-3,5-O-diglucoside,cyanidin-3,5,3'-O-triglucoside,cyanidin-3-O-rutinoside-5-O-glucoside,delphinidin-3-O-glucoside,and petunidin-3-O-glucoside may promote the formation of blue-purple colour in flowers.The combined analysis results revealed that the transcript41913_f2p0_1152 gene(MYB-like)may be a key gene in C.lanuginosa blue-purple flower colour development.These results provide the basis for further research on the blue-purple flower colour of C.lanuginosa. 展开更多
关键词 clematis lanuginosaa transcriptome transcriptome sequencing blue purple color anthocyanin anthocyanin compounds anthocyanin synthesis mechanism flower colour
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Mapping of the Pepper Purple Fruit Gene and Development of Molecular Markers Based on BSA-Seq 认领 引用
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作者 Xinxin Liu Yueyue Zhang +6 位作者 Rahat Sharif Weiqin Mo Zhenrong Li Guiling Yang Chao Song Ting Ye Changming Chen 《Phyton-International Journal of Experimental Botany》 SCIE 2025年第6期1695-1709,共15页
The color difference of capsicum fruit is closely related to the type and content of pigment in the peel,which is mainly determined by anthocyanins,chlorophyll,and carotenoids.This study used green“CA59”and purple“... The color difference of capsicum fruit is closely related to the type and content of pigment in the peel,which is mainly determined by anthocyanins,chlorophyll,and carotenoids.This study used green“CA59”and purple“Z81”pepper fruits as parents to create the F2 generation.The fruit color of 466 F2 population was identified,and the extreme individuals from this population were selected for Bulked Segregant Analysis(BSA)using resequencing.Genetic analysis revealed that a pair of genes controls the expression of the purple fruit trait in capsicum.Using functional annotation,expression analysis,and sequencing analysis of candidate genes,it was determined that there were four genes in the region between InDel 67 and InDel 75(185,664,068 BP-186,514,350 bp)on chromosome 10,that is the linkage interval for pepper purple fruit.There are 7 SNPs in the CaMYB1 gene(Capann_59V1aChr10g016200)in the pepper variety“Z81”.Of these,4 SNPs are located in the gene’s coding region.These 4 SNPs lead to 2 mutations that do not change the amino acid sequence(synonymous mutations)and 2 mutations that do change the amino acid sequence(non-synonymous mutations).Additionally,the expression level of the CaMYB1 gene in the purple fruit of“Z81”is significantly higher than that in the green fruit of“CA59”.CaMYB1 is believed to be a crucial candidate gene in regulating anthocyanin production in purple capsicum fruit.A molecular marker,InDel 67,was successfully developed,with a total separation rate of 92.4%. 展开更多
关键词 Pepper purple fruit genetic analysis BSA-seq CaMYB1
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Association analysis of BSA-seq,BSR-seq,and RNA-seq reveals key genes involved in purple leaf formation in a tea population(Camellia sinensis) 认领 引用 被引量：17
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作者 Yueqi Wang Ji-Qiang Jin +8 位作者 Rui Zhang Mengdi He Liubin Wang Zhuozhuo Mao Min Gan Liyun Wu Liang Chen Liyuan Wang Kang Wei 《Horticulture Research》 SCIE CSCD 2024年第9期115-126,共12页
Purple tea,rich in anthocyanins,has a variety of health benefits and is attracting global interest.However,the regulation mechanism of anthocyanin in purple tea populations has not been extensively studied.In this exp... Purple tea,rich in anthocyanins,has a variety of health benefits and is attracting global interest.However,the regulation mechanism of anthocyanin in purple tea populations has not been extensively studied.In this experiment,RNA-seq,BSA-seq,and BSR-seq were performed using 30 individuals with extreme colors(dark-purple and green)in an F1 population of‘Zijuan’and‘Jinxuan’.The results show that 459 genes were differentially expressed in purple and green leaves,among which genes involved in the anthocyanin synthesis and transport pathway,such as CHS,F3H,ANS,MYB75,GST,MATE,and ABCC,were highly expressed in purple leaves.Moreover,there were multiple SNP/InDel variation sites on chromosomes 2 and 14 of the tea plant,as identified by BSA-seq.The integrated analysis identified two highly expressed genes(CsANS and CsMYB75)with SNP/InDel site variations in the purple tea plants.By silencing leaves,we proved that CsMYB75 could positively regulate anthocyanin accumulation and expression of related structural genes in tea plants.A 181-bp InDel in the CsMYB75 promoter was also found to be co-segregating with leaf color.The results of this study provide a theoretical reference for the molecular mechanism of anthocyanin accumulation in purple tea plants and contribute to the creation of new tea cultivars with high anthocyanin content. 展开更多
关键词 purple tearich anthocyanin gene expression individuals purple tea RNA seq BSA seq BSR seq
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Tillage Effect on Organic Carbon in a Purple Paddy Soil 认领 引用 被引量：39
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作者 HUANG Xue-Xia GAO Ming +2 位作者 WEI Chao-Fu XIE De-Ti PAN Gen-Xing 《Pedosphere》 SCIE CAS 2006年第5期660-667,共8页
The distribution and storage of soil organic carbon (SOC) based on a long-term experiment with various tillage systems were studied in a paddy soil derived from purple soil in Chongqing, China. Organic carbon storage ... The distribution and storage of soil organic carbon (SOC) based on a long-term experiment with various tillage systems were studied in a paddy soil derived from purple soil in Chongqing, China. Organic carbon storage in the 0-20 and 0-40 cm soil layers under different tillage systems were in an order: ridge tillage with rice-rape rotation (RT-rr) > conventional tillage with rice only (CT-r) > ridge tillage with rice only (RT-r) > conventional tillage with rice-rape rotation (CT-rr). The RT-rr system had significantly higher levels of soil organic carbon in the 0-40 cm topsoil, while the proportion of the total remaining organic carbon in the total soil organic carbon in the 0-10 cm layer was greatest in the RT-rr system. This was the reason why the RT-rr system enhanced soil organic carbon storage. These showed that tillage system type was crucial for carbon storage. Carbon levels in soil humus and crop-yield results showed that the RT-rr system enhanced soil fertility and crop productivity. Adoption of this tillage system would be beneficial both for environmental protection and economic development. 展开更多
关键词 carbon sequestration organic carbon storage purple paddy soil tillage system
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Tillage Pedogenesis of Purple Soils in Southwestern China 认领 引用 被引量：24
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作者 HE Xiubin BAO Yuhai +4 位作者 NAN Hongwei XIONG Donghong WANG Li LIU Yanfeng ZHAO Jingbo 《Journal of Mountain Science》 SCIE 2009年第2期205-210,共6页
Land cultivation and tillage process, and their consequent impacts on soil erosion, have been criticized as the main cause of degradation of land or soil quality. However, purple soils, classified as Regosols in FAO T... Land cultivation and tillage process, and their consequent impacts on soil erosion, have been criticized as the main cause of degradation of land or soil quality. However, purple soils, classified as Regosols in FAO Taxonomy or Entisols in USDA Taxonomy, are formed from purple rocks of the Trias- Cretaceous system, have been developed or at least accelerated the development due to continual tillage operation, especially digging and ridging. The present study took micromorphological investigation on the sedimentary rocks and the soils under different operations of tillage. Results show that the purple rock of Feixiangguan Formation of the Trias system （Tlf） is the easiest to physical weathering and the most fertile soil material enriched in nutrients, and it has been, therefore, mostly cultivated and intensively tilled around the year. It has the fastest soil formation rate. Soil formation rate in the cropland with conventional tillage is higher than that in the forestiand and the grassland. It implies that the artificial brokenness and tillage disturbance play a great role in physical weathering and initiating soil formation processes. 展开更多
关键词 Tillage impact pedogenesis purple soil micromorphology southwestern China
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Mechanisms of root-soil reinforcement in bioembankments of sloping farmland in the purple hilly area,China 认领 引用 被引量：8
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作者 JIN Hui-fang SHI Dong-mei +3 位作者 ZENG Xiao-ying WANG San-shu DUAN Teng LOU Yi-bao 《Journal of Mountain Science》 SCIE CSCD 2019年第10期2285-2298,共14页
Bio-embankment is an important soil and water conservation measure in the purple hilly area in China,which can effectively improve the ability of cultivated soil layers to resist rainfall erosion and runoff scour.In c... Bio-embankment is an important soil and water conservation measure in the purple hilly area in China,which can effectively improve the ability of cultivated soil layers to resist rainfall erosion and runoff scour.In contrast,the ecological effect of bioembankment depends on the stability of the earth bank.Taking the natural grass bank as a control(CK),the root distribution,root tensile properties and shear resistance of root-soil composites for 3 typical soil and water conservation bio-embankments,namely,Morus alba Linn(Morns),Zanthoxylum bungeanum Maxim(Zanthoxylum)and Medicago sativa(Medicago)were analysed.The results included the following:(1)The root system of the bio-embankments generally decreased in extent with the soil depth;fine roots in the o-io cm depth were most prevalent and significantly higher than those at the other depths,and coarse roots were mainly distributed in the o-30cm layer.(2)The stress-strain curves of the roots of each bio-embankment were single-peak curves without clear strain softening phenomena.The smaller the root diameters were,the smoother the stress-strain curves,and the lower the capability of the earth bank to resist collapse.The larger the root diameters were,the lower the tensile strength.The average root tensile force was highest for Zanthoxylum(73.91 N),followed by Medicago(68.07N)and Morus(61.88 N),and the average root tensile strength showed the same trend,16.52 MPa for Zanthoxylum,16.08 MPa for Medicago and 13.02MPa for Morus.(3)The bio-embankment measures significantly improved the soil shear resistance,especially under vertical loads of 1oo kPa and 200kPa.The soil internal friction angle showed a significant log-positive correlation with root morphological parameters of root length density(RLD),root surface area density(RSAD) and rootweight density(RWD),while the soil cohesion force showed a positive linear correlation with these parameters.The results provide effective parameters supporting for the design of bio-embankments and promoting the use of soil reinforcement with suitable species selection in protective earth banks for stability in the purple hilly area. 展开更多
关键词 Bio-embankments Root distribution Tensile properties Shear strength Earth bank collapse Purple hilly area
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Comparison of forage yield,silage fermentative quality,anthocyanin stability,antioxidant activity,and in vitro rumen fermentation of anthocyanin-rich purple corn(Zea mays L.) stover and sticky corn stover 认领 引用 被引量：15
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作者 TIAN Xing-zhou Pramote Paengkoum +2 位作者 Siwaporn Paengkoum Sorasak Thongpea BAN Chao 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2018年第9期2082-2095,共14页
The objective of this study was to observe the forage yield, silage fermentative quality, anthocyanin stability, and antioxidant activity during the storage period and in vitro rumen fermentation of anthocyanin-rich p... The objective of this study was to observe the forage yield, silage fermentative quality, anthocyanin stability, and antioxidant activity during the storage period and in vitro rumen fermentation of anthocyanin-rich purple corn （Zea mays L.） stover （PS） and sticky corn stover （SS）. Forage yield of corn stover was weighed and ensiled with two treatments： （1） hybrid sticky waxy corn stover （control）, and （2） hybrid purple waxy corn stover （treatment）. Samples were stored in mini-silos for periods of 0, 7, 14, 21,42, 63, 84, and 105 d. The results showed that PS had significantly higher （P〈0.05） yields of dry matter （DM）, organic matter （OM）, gross energy （GE）, crude protein （CP）, neutral detergent fiber （NDF）, acid detergent fiber （ADF）, and total anthocyanins than that of the SS. Anthocyanin-rich purple corn stover silage （PSS） showed higher （P〈0.05） levels of DM and CP relative to the sticky corn stover silage （SSS）. Although anthocyanin-rich PSS displayed a lower （P〈0.05） level of pelargonidin-3-glucoside （P3G）, it had higher （P〈0.05） levels of peonidin （Peo） and pelargonidin （Pel） compared to the control. Delphinidin （Del） and malvidin （Mal） were not detected in SSS during the ensilage period; in PSS, Del was no longer detected after 7 d of ensilage. Specifically, total anthocyanins in anthocyanin-rich PSS decreased rapidly （P〈0.05） prior to 7 d of ensilage, and then remained at relatively stable （P〉0.05） constants. Compared to the anthocyanin-rich PSS, SSS displayed significantly higher （P〈0.05） pH value and ammonia nitrogen （NH3-N） content. Propionic acid （PA） at 0 d and butyric acid （BA） during the entire study period were not detected, whereas anthocyanin-rich PSS showed a higher （P〈0.05） level of lactic acid （LA） than that of the SSS. Compared with the SSS extract, anthocyanin-rich PSS extract showed a higher （P〈0.05） level of 2,2-diphenyl-1-picryihydrazyl （DPPH） scavenging activity and displayed a lower （P〈0.05） half maximal inhibitory concentration （IC50） value. Moreover, anthocyanin-rich PSS reduced （P〈0.05） gas production （GP）, and displayed lower levels of immediately soluble fraction and ratio of acetic acid （AA） to PA at 12 h, but the other parameters were unaffected （P〉0.05） relative to the control. Taken together, the results indicated that： （1） anthocyanins could be stable in silage; （2） anthocyanin-rich PSS showed better silage fermentative quality and stronger antioxidant activity; and （3） anthocyanin-rich PSS had no negative effect on rumen fermentation parameters. 展开更多
关键词 anthocyanin-rich purple corn stover silage anthocyanin stability silage fermentative quality antioxidant activity rumen fermentation
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Rainfall and Tillage Impacts on Soil Erosion of Sloping Cropland with Subtropical Monsoon Climate- A Case Study in Hilly Purple Soil area, China 认领 引用 被引量：10
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作者 TANG Jia-liang CHENG Xun-qiang +5 位作者 ZHU Bo GAO Mei-rong WANG Tao ZHANG Xi-feng ZHAO Pei YOU Xiang 《Journal of Mountain Science》 SCIE CSCD 2015年第1期134-144,共11页
Under global warming, storm events tend to intensify, particularly in monsoon-affected regions. As an important agricultural area in China, the purple soil region in the Sichuan Basin, where it has a prevailing monsoo... Under global warming, storm events tend to intensify, particularly in monsoon-affected regions. As an important agricultural area in China, the purple soil region in the Sichuan Basin, where it has a prevailing monsoon climate, is threatened by serious soil erosion. Tillage operations alter runoff and soil erosion processes on croplands by changing the physical properties of the soil surface. To clarify the relationship between tillage and soil erosion in the purple soil region, three different tillage practices in this region were investigated at the plot scale over 4 years： bare land with minimum tillage （BL）, conventional tillage （CT） and seasonal no-tillage ridges （SNTR） which was initially designed to prevent soil erosion by contoured ridges and no-tillage techniques. The results showed that although there were no significant differences in the surface runoff and soil erosion among the three oractices, BL caused relatively high surface runoff and soil erosion, followed by CT and SNTR. Classification and comparison of the rainfall events based on cluster analysis （CA） verified that the surface runoff was not significantly different between most intensive event and long intensive events but was significantly different between most intensive and short and medium-duration events. Only the rainfall events with the highest rainfall intensity could trigger serious soil erosion, up to 1000 kg ha^-1 in the region. Further detailed investigations on the effects of tillage operations on the soil erosion in a subtropical region with a monsoon climate are needed to provide a basis for modeling catchments and designing better management practices. 展开更多
关键词 Soil erosion Purple soil Tillage types Rainfall intensity Cluster analysis.
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Estimating purple-soil moisture content using Vis-NIR spectroscopy 认领 引用 被引量：10
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作者 GOU Yu WEI Jie +3 位作者 LI Jin-lin HAN Chen TU Qing-yan LIU Chun-hong 《Journal of Mountain Science》 SCIE CSCD 2020年第9期2214-2223,共10页
Soil moisture is essential for plant growth in terrestrial ecosystems.This study investigated the visible-near infrared(Vis-NIR)spectra of three subgroups of purple soils(calcareous,neutral,and acidic)from western Cho... Soil moisture is essential for plant growth in terrestrial ecosystems.This study investigated the visible-near infrared(Vis-NIR)spectra of three subgroups of purple soils(calcareous,neutral,and acidic)from western Chongqing,China,containing different water contents.The relationship between soil moisture and spectral reflectivity(R)was analyzed using four spectral transformations,and estimation models were established for estimating the soil moisture content(SMC)of purple soil based on stepwise multiple linear regression(SMLR)and partial least squares regression(PLSR).We found that soil spectra were similar for different moisture contents,with reflectivity decreasing with increasing moisture content and following the order neutral>calcareous>acidic purple soil(at constant moisture content).Three of the four spectral transformations can highlight spectral sensitivity to SMC and significantly improve the correlation between the reflectance spectra and SMC.SMLR and PLSRmethods provide similar prediction accuracy.The PLSR-based model using a first-order reflectivity differential(R?)is more effective for estimating the SMC,and gave coefficient of determination(v2),root mean square errors of validation(RMSEV),and ratio of performance to inter-quartile distance(RPIQ)values of 0.946,1.347,and 6.328,respectively,for the calcareous purple soil,and 0.944,1.818,and 6.569,respectively,for the acidic purple soil.For neutral purple soil,the best prediction was obtained using the SMLR method with R?transformation,yieldingv2,RMSEV and RPIQ values of 0.973,0.888 and 8.791,respectively.In general,PLSR is more suitable than SMLR for estimating the SMC of purple soil. 展开更多
关键词 Purple soil Soil moisture Vis-NIR spectroscopy Stepwise multiple linear regression Partial least squares regression
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Biotic and abiotic stress-responsive genes are stimulated to resist drought stress in purple wheat 认领 引用 被引量：6
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作者 LI Xiao-lan LÜXiang +3 位作者 WANG Xiao-hong PENG Qin ZHANG Ming-sheng REN Ming-jian 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2020年第1期33-50,共18页
Triticum aestivum L. cv. Guizi 1(GZ1) is a drought-tolerant local purple wheat cultivar. It is not clear how purple wheat resists drought stress, but it could be related to anthocyanin biosynthesis. In this study, tra... Triticum aestivum L. cv. Guizi 1(GZ1) is a drought-tolerant local purple wheat cultivar. It is not clear how purple wheat resists drought stress, but it could be related to anthocyanin biosynthesis. In this study, transcriptome data from droughttreated samples and controls were compared. Drought slightly reduced the anthocyanin, protein and starch contents of GZ1 grains and significantly reduced the grain weight. Under drought stress, 16 682 transcripts were reduced, 27 766 differentially expressed genes(DEGs) were identified, and 379 DEGs, including DREBs, were related to defense response. The defense-response genes included response to water deprivation, reactive oxygen, bacteria, fungi, etc. Most of the structural and regulatory genes in anthocyanin biosynthesis were downregulated, with only Ta DFR, Ta OMT, Ta5,3GT, and Ta MYB-4 B1 being upregulated. Ta CHS, Ta F3H, TaCHI, Ta4CL, and TaF3’H are involved in responses to UV, hormones, and stimulus. Ta CHS-2D1, Ta DFR-2D2, Ta DFR-7D, TaOMT-5A, Ta5,3 GT-1B1, Ta5,3GT-3A, and Ta5,3GT-7B1 connect anthocyanin biosynthesis with other pathways, and their interacting proteins are involved in primary metabolism, genetic regulation, growth and development, and defense responses. There is further speculation about the defense-responsive network in purple wheat. The results indicated that biotic and abiotic stress-responsive genes were stimulated to resist drought stress in purple wheat GZ1, and anthocyanin biosynthesis also participated in the drought defense response through several structural genes. 展开更多
关键词 transcriptome purple wheat drought anthocyanin differentially expressed genes defense response stress
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Consumption of purple sweet potato leaves modulates human immune response: T-lymphocyte functions, lytic activity of natural killer cell and antibody production 认领 引用 被引量：11
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作者 Chiao-Ming Chen Sing-Chung Li +3 位作者 Ya-Ling Lin Ching-Yun Hsu Ming-Jer Shieh Jen-Fang Liu 《World Journal of Gastroenterology》 SCIE CAS 2005年第37期5777-5781,共5页
AIM： To study the immunological effects of physiologica doses of purple sweet potato leaves （PSPL）. METHODS： The randomized crossover study （two periods, each lasting for 2 wk） involved 16 healthy non-smoking ad... AIM： To study the immunological effects of physiologica doses of purple sweet potato leaves （PSPL）. METHODS： The randomized crossover study （two periods, each lasting for 2 wk） involved 16 healthy non-smoking adults of normal weight. The 6-wk study consisted of a run-in （wk 1） PSPL diet （daily consumption of 200 g PSPL） or a control diet （low polyphenols, with the amount of carotenoids adjusted to the same level as that of PSPL） （wk 2-3）, washout diet （wk 4）, and switched diet （wk 5-6）. Fasting blood was collected weekly in the morning. T-lymphocyte function was assessed via the proliferation and secretion of immunoreactive cytokines. Salivary IgA secretion and the specific cytotoxic activities of cytotoxic T lymphocytes and natural killer （NK） cells were determined. RESULTS： The plasma 13-carotene level increased with time in both groups, while the plasma polyphenol level decreased in the control group, and no significant difference was detected between the two groups. Although p^asma polyphenol levels did not significantly increase in the PSPL group at the end of the study, they were significantly elevated in urine. PSPL consumption produced a significant increase in proliferation responsiveness of peripheral blood mononuclear cells （PBMC） and their secretion of immunoreactive IL-2 and IL-4. As well, lytic activity in NK cells was elevated in a time-dependent fashion. Salivary IgA secretion significantly decreased in control group after 2 wk, and returned to baseline following dietary switch to PSPL. CONCLUSION： Consumption of PSPL modulates various immune functions including increased proliferation responsiveness of PBMC, secretion of cytokines IL-2 and IL-4, and the lytic activity of NK cells. The responsible determinants of PSPL remain to be elucidated, as does the biological significance of the present observations. 展开更多
关键词 Purple sweet potato leaves Polyphenol Immune function
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Diacylated anthocyanins from purple sweet potato(Ipomoea batatas L.)attenuate hyperglycemia and hyperuricemia in mice induced by a high-fructose/high-fat diet 认领 引用 被引量：8
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作者 Luhong SHEN Yang YANG +2 位作者 Jiuliang ZHANG Lanjie FENG Qing ZHOU 《Journal of Zhejiang University-SCIENCE B》 SCIE CAS CSCD 2023年第7期587-601,共15页
Studies have shown that targeting xanthine oxidase(XO)can be a feasible treatment for fructose-induced hyperuricemia and hyperglycemia.This study aimed to evaluate the dual regulatory effects and molecular mechanisms ... Studies have shown that targeting xanthine oxidase(XO)can be a feasible treatment for fructose-induced hyperuricemia and hyperglycemia.This study aimed to evaluate the dual regulatory effects and molecular mechanisms of diacylated anthocyanins from purple sweet potato(diacylated AF-PSPs)on hyperglycemia and hyperuricemia induced by a high-fructose/high-fat diet.The body weight,organ index,serum biochemical indexes,and liver antioxidant indexes of mice were measured,and the kidneys were observed in pathological sections.The relative expression levels of messenger RNAs(mRNAs)of fructose metabolism pathway enzymes in kidney were detected by fluorescent real-time quantitative polymerase chain(qPCR)reaction technique,and the expression of renal transporter protein and inflammatory factor pathway protein was determined by immunohistochemistry(IHC)technique.Results showed that diacylated AF-PSPs alleviated hyperuricemia in mice,and that this effect might be related to the regulation of liver XO activity,lipid accumulation,and relevant renal transporters.Diacylated AF-PSPs reduced body weight and relieved lipid metabolism disorder,liver lipid accumulation,and liver oxidative stress,thereby enhancing insulin utilization and sensitivity,lowering blood sugar,and reducing hyperglycemia in mice.Also,diacylated AF-PSPs restored mRNA levels related to renal fructose metabolism,and reduced kidney injury and inflammation.This study provided experimental evidence for the mechanisms of dual regulation of blood glucose and uric acid(UA)by diacylated AF-PSPs and their utilization as functional foods in the management of metabolic syndrome. 展开更多
关键词 Diacylated anthocyanins from purple sweet potato(diacylated AF-PSPs) Hyperglycemia Hyperuricemia Metabolism syndrome Regulation of renal function
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Coleoptile Purple Line Regulated by A-P Gene System Is a Valuable Marker Trait for Seed Purity Identification in Hybrid Rice 认领 引用 被引量：6
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作者 DU Shuanglin WANG Zhongwei +7 位作者 CHEN Yun TAN Yao LI Xiang ZHU Wenping HE Guanghua LEI Kairong GUO Longbiao ZHANG Yi 《Rice science》 SCIE CSCD 2022年第5期451-461,I0019-I0031,共11页
In plants,a large number of anthocyanin biosynthetic genes encoding enzymes and regulatory genes encoding transcription factors are required for anthocyanin synthesis.Coleoptile purple lines are two purple lines on bo... In plants,a large number of anthocyanin biosynthetic genes encoding enzymes and regulatory genes encoding transcription factors are required for anthocyanin synthesis.Coleoptile purple lines are two purple lines on both sides of coleoptiles after seed germination.However,the molecular mechanism of coleoptile purple line is not clear in rice so far.In this study,two major dominant genes,coleoptile purple line 1(OsCPL1,also known as OsC1)and coleoptile purple line 2(OsCPL2),were isolated via map-based cloning,and both of them were required for anthocyanin biosynthesis of coleoptile purple line in rice.The knockout and complementation experiments confirmed that OsC1 was required for purple color in most organs,such as coleoptile line,sheath,auricle,stigma and apiculus,whereas OsCPL2 was just required for coleoptile purple line.OsC1 was predominantly expressed in coleoptiles,flag leaves,and green panicles,and highly expressed in young leaves,whereas OsCPL2 was predominantly expressed in coleoptiles,and extremely lowly expressed in the other tested organs.Loss-of-function of either OsC1 or OsCPL2 resulted in significant reduction of transcript levels of multiple anthocyanin biosynthesis genes in coleoptiles.Coleoptile purple line was further used as a marker trait in hybrid rice.Purity identification in hybrid rice seeds via coleoptile purple line just needed a little water,soil and a small plate and could be completed within 5 d.Molecular marker and field identification analyses indicated that coleoptile purple line was reliable for the hybrid seed purity identification.Our findings disclosed that coleoptile purple line in rice was regulated by two major dominant genes,OsC1 and OsCPL2,and can be used as a simple,rapid,accurate and economic marker trait for seed purity identification in hybrid rice. 展开更多
关键词 OsC1 OsCPL2 coleoptile purple line anthocyanin seed purity identification marker trait
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Effects of Cooking on Anthocyanin Concentration and Bioactive Antioxidant Capacity in Glutinous and Non-Glutinous Purple Rice 认领 引用 被引量：6
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作者 Supaporn YAMUANGMORN Bernard DELL Chanakan PROM-U-THAI 《Rice science》 SCIE CSCD 2018年第5期270-278,共9页
Purple rice is a source of bioactive antioxidants for rice consumers. Loss of the major antioxidant compounds after a range of cooking processes was evaluated by measuring the changes in anthocyanin concentration （AT... Purple rice is a source of bioactive antioxidants for rice consumers. Loss of the major antioxidant compounds after a range of cooking processes was evaluated by measuring the changes in anthocyanin concentration （ATC） and antioxidant capacity （DPPH activity） of four non-glutinous and four glutinous genotypes. However, soaking in water prior to cooking generally decreased more ATC and antioxidant capacity in non-glutinous than in glutinous genotypes. Wet cooking （WC） and soaking before wet cooking （S-WC） led to lose almost all the ATC and antioxidant capacity with only slight variation between genotypes. In the glutinous genotype Pieisu, which had the highest raw rice ATC, ATC remained the highest when cooked by the WC method. By contrast, almost no ATC remained after WC and S-WC in the low ATC genotypes such as Kum Doi Saket. Overall, the loss of ATC was greater in non-glutinous than in glutinous genotypes for both WC and S-WC methods, but the reverse occurred for antioxidant capacity. WC using electric rice cooker retained higher ATC than the pressure cooking. Thus, for genotypes with high ATC and antioxidant capacity, the selection of cooking method is critical for retaining and stabilizing rice quality. 展开更多
关键词 purple rice rice cooking anthocyanin antioxidant capacity wet cooking
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Mg2+ improves biomass production from soybean wastewater using purple non-sulfur bacteria 认领 引用 被引量：6
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作者 Pan Wu Guangming Zhang Jianzheng Li 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2015年第2期43-46,共4页
Soybean wastewater was used to generate biomass resource by use of purple non-sulfur bacteria（PNSB）. This study investigated the enhancement of PNSB cell accumulation in wastewater by Mg2＋under the light-anaerobic ... Soybean wastewater was used to generate biomass resource by use of purple non-sulfur bacteria（PNSB）. This study investigated the enhancement of PNSB cell accumulation in wastewater by Mg2＋under the light-anaerobic condition. Results showed that with the optimal Mg2＋dosage of 10 mg/L, biomass production was improved by 70% to 3630 mg/L,and biomass yield also was improved by 60%. Chemical Oxygen Demand（COD） removal reached above 86% and hydraulic retention time was shortened from 96 to 72 hr. The mechanism analysis indicated that Mg2＋could promote the content of bacteriochlorophyll in photosynthesis because Mg2＋is the bacteriochlorophyll active center, and thus improved adenosine triphosphate（ATP） production. An increase of ATP production enhanced the conversion of organic matter in wastewater into PNSB cell materials（biomass yield） and COD removal, leading to more biomass production. With 10 mg/L Mg2＋, bacteriochlorophyll content and ATP production were improved by 60% and 33% respectively. 展开更多
关键词 Purple non-sulfur bacteria Mg2＋ Biomass resource Soybean wastewater Photosynthesis
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Assessment of the Performance of WEPP in Purple Soil Area with Simulated Rainfall Experiments 认领 引用 被引量：3
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作者 FU Bin WANG Yukuan +1 位作者 XU Pei YAN Kun 《Journal of Mountain Science》 SCIE CSCD 2012年第4期570-579,共10页
The water erosion prediction project (WEPP) model is a popular water erosion prediction tool developed on the basis of the physical processes of water erosion. Although WEPP has been widely used around the world, its ... The water erosion prediction project (WEPP) model is a popular water erosion prediction tool developed on the basis of the physical processes of water erosion. Although WEPP has been widely used around the world, its application in China is still insufficient. In this study, the performance of WEPP used to estimate the runoff and soil loss on purple soil (Calcaric Regosols in FAO taxonomy) sloping cropland was assessed with the data from runoff plots under simulated rainfall conditions. Based on measured soil properties, runoff and erosion parameters, namely effective hydraulic conductivity, inter-rill erodibility, rill erodibility, and critical shear stress were determined to be 2.68 mm h-1, 5.54 x l0^6 kg s-1 m-4, 0.027 s m-1 and 3-5 Pa, respectively, by using the recommended equations in the WEPP user manual. The simulated results were not good due to the low Nash efficiency of 0.41 for runoff and negative Nash efficiency for soil loss. After the four parameters were calibrated, WEPP performed better for soil loss prediction with a Nash efficiency of 0.76. The different results indicated that the equations recommended by WEPP to calculate parameters such as erodiblity and critical shear stress are not suitable for the purple soil areas, Sichuan Province, China. Although the predicted results can be accepted by optimizing the runoff and erosion parameters, more research related to the determination of erodibility and critical sheer stress must be conducted to improve the application of WEPP in the purple soil areas. 展开更多
关键词 WEPP Soil erosion Simulated rainfall Purple soil Erodibility
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Transport of phosphorus in runoff and sediment with surface runoff from bare purple soil during indoor simulated rainfall 认领 引用 被引量：3
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作者 MA Xiao YANG Jie +3 位作者 ZHOU Xiang-jun WU Hong-tao XIONG Qiao LI Ye 《Journal of Mountain Science》 SCIE CSCD 2022年第8期2333-2345,共13页
Phosphorus(P)in surface runoff from purple soil is a critical element of agricultural nonpoint source pollution,leading to eutrophication of surface waters in the Three Gorges Reservoir Area(TGRA)of China.This work ai... Phosphorus(P)in surface runoff from purple soil is a critical element of agricultural nonpoint source pollution,leading to eutrophication of surface waters in the Three Gorges Reservoir Area(TGRA)of China.This work aimed to understand the processes and mechanisms of P losses from bare purple soil.Based on an indoor rainfall simulation experiment,we focused on the processes of surface runoff and P losses via different hydrological pathways.Experimental treatments included three simulated rainfall intensities,four slope gradients,and three fertilizer treatments.P loss from sediment was the main pathway in the purple soil,and bioavailable P was mainly transferred in dissolved P(DP)of runoff water.The P loss loads tend to grow with the increase of the slope until 25°for the maximum load of runoff water and 20°for the maximum load of sediment.Concentrations of DP in the surface runoff after fertilizer application can exceed the estimates of those required for accelerated eutrophication.Sediment P control might be an essential way for reducing P loss in purple soil for the local government and farmers of TGRA. 展开更多
关键词 Surface runoff Sediment yield Phosphorus loss Purple soil Simulated rainfall
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