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Advancing grape breeding through an in vitro embryo germination technique without cold stratification 认领 引用 被引量：2
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作者 Zhenhua Liu Jing Song +7 位作者 Yan Wang Ailing Yan Xiaoyue Wang Huiling Wang Jiancheng Ren Haiying Xu Pingyin Guan Lei Sun 《Horticultural Plant Journal》 SCIE CAS CSCD 2025年第4期1483-1492,共10页
In grape breeding programs,the extensive planting of seedlings is a crucial aspect.However,grape seeds display distinct dormancy traits,necessitating a prolonged cold stratification process for dormancy release.In ord... In grape breeding programs,the extensive planting of seedlings is a crucial aspect.However,grape seeds display distinct dormancy traits,necessitating a prolonged cold stratification process for dormancy release.In order to enhance the efficiency of breeding programs,this study presents an innovative in vitro embryo germination technique that eliminates the requirement for cold stratification of seeds.The method involves the disruption of peripheral tissue in grape seed embryos using a straightforward mechanical technique,resulting in the efficient production of a substantial quantity of seed embryos,with a germination rate of up to 88% for these isolated embryos.These embryos are subsequently cultured in vitro to facilitate germination into seedlings,thereby eliminating the need for cold stratification.Consequently,grape seedlings can be obtained within a significantly reduced timeframe of 30-38 d,expediting the overall grape breeding process.This novel approach not only accelerates grape hybridization but also streamlines the selection of new grape varieties,contributing to an efficient and time-sensitive breeding methodology. 展开更多
关键词 Grape Seed dormancy Germination Embryo culture
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Sandalwood Essential Oil(SEO)Readily Inhibits Colletotrichum gloeosporioides-Mediated Anthracnose in Post-Harvest Stored Mango(Mangifera indica L.cv.‘Keitt’) 认领 引用 被引量：1
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作者 Muhammad Shahzaib Shenzhen Wang +10 位作者 Rundong Yao Sezai Ercisli Rongxiang Wang Xiaona Fu Hanqing Cong Pingyin Guan Xuefei Jiang Mahmoud F.Seleiman Yuandi Zhu Muhammad Mubashar Zafar Fei Qiao 《Phyton-International Journal of Experimental Botany》 SCIE 2025年第7期2167-2181,共15页
Mango(Mangifera indica L.cv.‘Keitt’)is one of the core fruit delicacies produced by China.During the post-harvest storage span,the fungal pathogen colletotrichum gloeosporioides readily invades the fruits and leads ... Mango(Mangifera indica L.cv.‘Keitt’)is one of the core fruit delicacies produced by China.During the post-harvest storage span,the fungal pathogen colletotrichum gloeosporioides readily invades the fruits and leads to a significant overall yield loss.In recent years of development,the exploitation of naturally occurring fungitoxic compounds such as Sandalwood Essential Oil(SEO)has been useful in tackling various fungal species.This study demonstrates the potential of SEO as part of a storage protection strategy against C.gloeosporioides-induced postharvest anthracnose.SEO displayed a relatively higher mycelial growth inhibition rate when compared to various other essential oils.Furthermore,the Minimal Inhibitory Concentration(MIC),Minimum Fungicidal Concentration(MFC),and EC50(Half maximal effective concentration)of SEO were determined to be 2000,2500,and 610.38μL/L,respectively.Moreover,the chitosan glutamate-SEO emulsion controlled the anthracnose spread for several days by multiple folds at½MIC,MIC,and 2 MIC concentrations.These results strongly support the potential for largescale production and application of SEO emulsions by agrochemical firms and post-harvest storage facilities handling Keitt mangoes. 展开更多
关键词 Essential oils sandalwood essential oil Colletotrichum gloeosporioides anthracnose fungitoxic compounds
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Dissecting the membrane-microtubule sensor in grapevine defence 认领 引用 被引量：2
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作者 Pingyin Guan Wenjing Shi +1 位作者 Michael Riemann Peter Nick 《Horticulture Research》 SCIE CSCD 2021年第1期3564-3579,共16页
Specific populations of plant microtubules cooperate with the plasma membrane to sense and process abiotic stress signals,such as cold stress.The current study derived from the question,to what extent this perception ... Specific populations of plant microtubules cooperate with the plasma membrane to sense and process abiotic stress signals,such as cold stress.The current study derived from the question,to what extent this perception system is active in biotic stress signalling.The experimental system consisted of grapevine cell lines,where microtubules or actin filaments are visualised by GFP,such that their response became visible in vivo.We used the bacterial elicitors harpin(inducing cell-death related defence),or flg22(inducing basal immunity)in combination with modulators of membrane fluidity,or microtubules.We show that DMSO,a membrane rigidifier,can cause microtubule bundling and trigger defence responses,including activation of phytoalexin transcripts.However,DMSO inhibited the gene expression in response to harpin,while promoting the gene expression in response to flg22.Treatment with DMSO also rendered microtubules more persistent to harpin.Paradoxically,Benzylalcohol(BA),a membrane fluidiser,acted in the same way as DMSO.Neither GdCl3,nor diphenylene iodonium were able to block the inhibitory effect of membrane rigidification on harpin-induced gene expression.Treatment with taxol stabilised microtubule against harpin but amplified the response of PAL transcripts.Therefore,the data support implications of a model that deploys specific responses to pathogen-derived signals. 展开更多
关键词 immunity inhibited render
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The fungal elicitor eutypine from Eutypa lata activates basal immunity through its phenolic side chains 认领 引用
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作者 Pingyin Guan Florian Schmidt +3 位作者 Jochen Fischer Michael Riemann Eckhard Thines Peter Nick 《Horticulture Research》 SCIE CSCD 2022年第1期2617-2628,共12页
Grapevine trunk diseases(GTDs)affect grape production and reduce vineyard longevityworldwide.Since the causative fungi also occur in asymptomatic trunks,we address disease outbreak in terms of altered chemical communi... Grapevine trunk diseases(GTDs)affect grape production and reduce vineyard longevityworldwide.Since the causative fungi also occur in asymptomatic trunks,we address disease outbreak in terms of altered chemical communication between host and endophyte.Here,we identified four chemically similar secondary metabolites secreted by the GTD-associated fungus Eutypa lata to analyse their modes of action in a grapevine cell culture of Vitis rupestris,where microtubules were tagged by GFP.Treatment with the metabolite eutypine activated defence responses,evident from extracellular alkalinisation and induction of defence genes.Eutypinol,instead,eliminated microtubules,in contrast to the other three compounds.Furthermore,we evaluated the effect of four corresponding chemical analogues of these compounds,sharing the phenolic but lacking the alkyne moiety.These analogues were able to induce similar defence responses in V.rupestris cells,albeit at reduced amplitude.Since closely related moieties differing only in details of the side groups at the phenolic ring differ significantly with respect to the response of the host cell,we propose that these fungal compounds act through a specific binding site at the membrane of grapevine cells.We corroborate this specificity by combination experiments,where the eutypine and the eutypinol analogues behave competitively with respect to the elicited responses.In summary,Eutypa lata secretes compounds that elicit host defence in a specific manner by interfering with early events of immunity signalling.This supports the notion that a real understanding of GTDs has to address inter-organismic chemical communication. 展开更多
关键词 grapevine trunk diseases gtds affect disease outbreak vitis rupestriswhere fungal elicitor analyse their modes action eutypine altered chemical communication chemically similar secondary metabolites
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The triggering mechanism for predominant hormonal signal production in fleshy fruit ripening 认领 引用
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作者 Jinyao Ouyang Bing He +5 位作者 Ya Zeng Changsheng Zhai Yating Li Jie Li Pingyin Guan Wensuo Jia 《Molecular Horticulture》 SCIE CAS CSCD 2025年第1期558-582,共25页
Fleshy Fruit(FF)ripening is regulated by multiple hormones,which can be categorized into two groups,i.e.,the positive signals acting to promote FF ripening and the negative signals acting to suppress FF ripening.Ethyl... Fleshy Fruit(FF)ripening is regulated by multiple hormones,which can be categorized into two groups,i.e.,the positive signals acting to promote FF ripening and the negative signals acting to suppress FF ripening.Ethylene(ET)and abscisic acid(ABA)are two predominant positive signals respectively controlling climacteric(CL)and non-climacteric(NC)FF ripening,whereas auxin(IAA)is the predominant negative signal controlling both FF growth and ripening.Functioning of these hormones is initiated by an alteration of the hormonal levels,which is referred to as the process of Hormonal Signal Production(HSP)in FF development and ripening.While the hormonal regulation of FF ripening has been extensively studied and reviewed,knowledge of HSP has never been summarized and discussed.The purpose of this review is to summarize and discuss the triggering mechanism of HSP.We first summarize the physiological,biochemical and molecular bases of HSP for three crucial hormones,ET,ABA,and IAA,including hormonal metabolism,transport and reciprocal regulation of HSP among different hormones,we then summarize and discuss the recent discoveries on the mechanism of cellular signal transduction of HSP.Finally,we propose several viewpoints to facilitate comprehension of the future research endeavors. 展开更多
关键词 Hormonal Signal Production Fleshy Fruit Ripening Abscisic acid Ethylene Auxin
Anti-microtubule activity of the traditional Chinese medicine herb Northern Ban Lan(Isatis tinctoria)leads to glucobrassicin 认领 引用
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作者 Pingyin Guan Jianning Zhou +6 位作者 Sergey Girel Xin Zhu Marian Schwab Kunxi Zhang Qiyan Wang-Müller Laurent Bigler Peter Nick 《Journal of Integrative Plant Biology》 SCIE CAS CSCD 2021年第12期2058-2074,共17页
Traditional Chinese medicine(TCM)belongs to the most elaborate and extensive systems of plant-based healing.The herb Northern Ban Lan(Isatis tinctoria)is famous for its antiviral and anti-inflammatory activity.Althoug... Traditional Chinese medicine(TCM)belongs to the most elaborate and extensive systems of plant-based healing.The herb Northern Ban Lan(Isatis tinctoria)is famous for its antiviral and anti-inflammatory activity.Although numerous components isolated from I.tinctoria have been characterized so far,their modes of action have remained unclear.Here,we show that extracts from I.tinctoria exert antimicrotubular activity.Using time-lapse microscopy in living tobacco BY-2(Nicotiana tabacum L.cvBrightYellow2)cellsexpressing greenfluorescentprotein-tubulin,weuse activity-guided fractionation to screen out the biologically active compounds of I.tinctoria.Among 54 fractions obtained from either leaves or roots of I.tinctoria by methanol(MeOH/H2O 8:2),or ethyl acetate extraction,one specific methanolic root fraction was selected,because it efficiently and rapidly eliminated microtubules.By combination of further purification with ultrahigh-performance liquid chromatography and high-resolution tandem mass spectrometry most of the bioactivity could be assigned to the glucosinolate compound glucobrassicin.Glucobrassicin can also affect microtubules and induce apoptosis in HeLa cells.In the light of these findings,the antiviral activity of Northern Ban Lan is discussed in the context of microtubules being hijacked by many viral pathogens for cell-to-cell spread. 展开更多
关键词 anti-microtubule activity cytoskeleton glucobrassicin high-performance liquid chromatography(HPLC) high-resolution tandem mass spectrometry(HRMS/MS) Isatis tinctoria Northern Ban Lan traditional Chinese medicine(TCM)
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