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Gene expression and metabolite profiles of cotton fiber during cell elongation and secondary cell wall synthesis

Cell research 2007年第5期17卷 422-434页

作者： Jin-Ying Gou1,2.3 Ling-Jian Wang1,2.Shuang-ping Chen4 Wen-Li Hu1,2.Xiao-Ya Chen1,2. 1 National Key Laboratory of plant Molecular Genetics, Institute of plant physiology and Ecology, Shanghai Institutes for Biological {2.s, Chinese Academy of {2.s, 300 Fenglin road, Shanghai 2.0032. china 2.CAS center of Shanghai chenshan botanical garden, 300 Fenglin road, Shanghai 2.0032. china 3 Graduate School of Chinese Academy of {2.s, Shanghai 2.0032. china 4 Department of Computer {2. and Technology, University of {2. and Technology of china, Hefei 2.002., china National Key Laboratory of plant Molecular Genetics Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai China CAS center of Shanghai chenshan {2. garden Shanghai China Graduate School of Chinese Academy of sciences Shanghai China Department of Computer science and Technology University of Science and Technology of China Hefei China

Cotton fibers elongate rapidly after initiation of elongation, eventually leading to the deposit of a large amount ofcellulose. To reveal features of cotton fiber cells at the fast elongation and the secondary cell wall synthesis stages, wecompared the respective transcriptomes and metabolite profiles. Comparative analysis of transcriptomes by cDNA arrayidentified 633 genes that were differentially regulated during fiber development. principal component analysis (pCA)using expressed genes as variables divided fiber samples into four groups, which are diagnostic of developmental *** grouping results are also found if we use non-polar or polar metabolites as variables for pCA of developingfibers. Auxin signaling, wall-loosening and lipid metabolism are highly active during fiber elongation, whereas cellulosebiosynthesis is predominant and many other metabolic pathways are downregulated at the secondary cell wall synthesisstage. Transcript and metabolite profiles and enzyme activities are consistent in demonstrating a specialization process ofcotton fiber development toward cellulose synthesis. These data demonstrate that cotton fiber cell at a certain stage has itsown unique feature, and developmental stages of cotton fiber cells can be distinguished by their transcript and metaboliteprofiles. During the secondary cell wall synthesis stage, metabolic pathways are streamed into cellulose synthesis.

关键词： cotton fiber transcriptome metabolite profile auxin cell elongation cellulose synthesis

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Functional study of MeCBF1 transcription factor from cassava

Functional study of MeCBF1 transcription factor from cassava

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2.11全国植物生物学研讨会

作者： Dong An~1,peng Zhang~(1,2.) 1 National Key Laboratory of plant Molecular Genetics,Institute of plant physiology and Ecology, Shanghai Institutes for Biological {2.s,Chinese Academy of {2.s,300 Fenglin road, Shanghai 2.0032.china 2.Shanghai chenshan plant science research center,Chinese Academy of {2.s,Shanghai chenshan botanical garden,3888 Chenhua road,Shanghai 2.1602,china

DrEB 1/C-repeat binding factor(CBF) is a plant-specific family of transcription factors that play a crucial role in freezing *** order to study the abiotic stress tolerance in cassava(Manihot esculenta Crantz),a DrEB1A/CBF-like gene, designated as MeCBF1,was ***1 contains all the conserved domains known to already identified CBF proteins of other plant species,indicating that this protein could be classified as a typical member of the DrEB ***

关键词： cassava CBF transcription factor cold stress tolerance

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Value-added cassava for bio-industrial development using biotechnological approaches

Value-added cassava for bio-industrial development using bio...

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2.11全国植物生物学研讨会

作者： peng Zhang~(1,2. 1 SIBS-ETH Shanghai center for Cassava Biotechnology,National Key Laboratory of plant Molecular Genetics,Institute of plant physiology and Ecology,Shanghai Institutes for Biological sciences, Chinese Academy of sciences,300 Fenglin road,Shanghai 2.0032.china 2.Shanghai chenshan plant science research center,Chinese Academy of sciences,Shanghai chenshan botanical garden,3888 Chenhua road,Shanghai {12.,china

Cassava(Mantnot esculenta Crantz) accumulates a lot of starch in its storage roots that can be processed to food,feed,modified starches and *** high yield potential and robustness against unfavorable environmental conditions make cassava suitable crop for marginal lands,which will not highly compete with other food crops on arable *** are several key biological constraints in cassava for bio-industrial *** example,the post-harvest physiological deterioration (ppD) of cassava storage roots is the biggest disadvantage during starch and

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Expression of small interfering rNAs targeting to development-related genes of Ditylenchus destructor in sweetpotato improves host resistance during infection

Expression of small interfering RNAs targeting to developmen...

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2.11全国植物生物学研讨会

作者： Zhaorong Wei~1,peng Zhang~(1,2.) 1 Institute of plant physiology & Ecology,Shanghai Institutes for Biological sciences,Chinese Academy of sciences,300 Fenglin road,Shanghai 2.0032.china 2.chenshan plant science research center,Chinese Academy of sciences,chenshan botanical garden,3888 Chenhua road,Shanghai 2.1602,china

Ditylenchus destructor,a plant parasitic nematode frequently called stem nematode,is one of the major pathogens of sweetpotato[Ipomoea batatas(L.) Lam]. In order to improve stem nematode resistance,sweetpotato expressing small interfering rNAs(sirNAs)to supress the expression of two key genes related to stem nematode development was *** first one is a paramyosin ortholog gene (dd-unc-15) implicated in physically interacting with myosin heavy chain A(MHC A) in striated muscle,and the other is a citrate synthase gene(dd-cts) predicted to be mitochondrial and required for embryonic *** expression levels of sirNAs derived from corresponding double stranded rNA interference constructs in transgenic sweet potato plants were verified by Northern *** was found that, at 10,2. and 30 days after inoculation,the amount of nematodes in the storage roots

关键词： sweet potato anthocyanin biosynthesis expression regulation flavonoids

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Hormonal regulation of plant sesquiterpene biosynthesis

Hormonal regulation of plant sesquiterpene biosynthesis

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第十三届全国植物基因组学大会

作者： Gaojie Hong,Zongxia Yu,Jianxu Li,Changqing Yang,Xiaoya Chen~* National Key Laboratory of plant Molecular Genetics,National center of plant Gene research(Shanghai),Institute of plant physiology and Ecology,Shanghai Institute for Biological sciences,Chinese Academy of sciences,Shanghai,2.0032.plant science research center,Shanghai chenshan botanical garden,Shanghai 2.1602.p.r.china

In plants terpenoids constitute an extremely large and structurally diverse class of natural products,and most of them play versatile ecological roles in mediating the plant interactions with *** are also a valuable source of leading compounds,the anti-malaria drug Qinghaosu(artemisinin),for example,is an endoperoxide sesquiterpene lactone isolated from the traditional herb Artemisia

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regulation of plant sesquiterpene biosynthesis

Regulation of plant sesquiterpene biosynthesis

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从植物科学到农业发展——2.12.国植物生物学大会

作者： Gao-Jie Hong,Zong-Xia Yu,Xiao-Ya Chen~* National Key Laboratory of plant Molecular Genetics,Institute of plant physiology and Ecology, Shanghai Institute for Biological {2.s,Chinese Academy of {2.s,Shanghai,2.0032.plant science research center,Shanghai chenshan botanical garden,Shanghai 2.1602.p.r.china

Terpenoids play important roles in plant-insect,plant-pathogen,and plant-plant interactions. Some terpenoids are of medicinal value,such as the anti-malaria drug Qinghaosu (artemisinin) which is an endoperoxide sesquiterpene lactone isolated from the traditional herb Artemisia annua. Sesquiterpenes are derived from the cytosolic mevalonate pathway,and sesquiterpene synthases catalyze the key step of converting faraesyl diphosphate into mostly cyclic *** plants expression of sesquiterpene synthase genes is often inducible by the phytohormone jasmonate(JA).We found that in ***,the JA-responsive Ap2.family transcription factors—AaErF1 and AaErF2.are involved in transcriptional regulation of AaADS(encoding amorpha-4,11-diene synthase) and CYp71AV1 of the artemisinin *** Arabidopsis thaliana,the bHLH transcription factor MYC2.plays an important role in transcriptional regulation of AtTpS2. and AtTpS11,both are responsible for floral production of volatile ***,in addition to JA, the growth regulator gibberellin(GA) is also able to induce the AtTpS2. and AtTpS11 ***2.interacts with DELLA proteins which are GA signaling repressors, integrating both GA and JA signals into transcriptional regulation of sesquiterpene synthase *** that secondary metabolites vary among different organs and along with the plant life cycle,further research will be directed to explore the relationship between plant development and secondary metabolism regulation.

关键词： Sesquiterpene artemisinin MYC2 gibberellins jasmonate

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Enhanced Anthocyanin production by Systemic Up-regulation of Anthocyanin Biosynthetic genes in Sweet potato(Ipomoea batatas)

Enhanced Anthocyanin Production by Systemic Up-Regulation of...

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植物分子生物学与现代农业——2.10全国植物生物学研讨会

作者： Min Zhang~1,Ling Yuan~2.peng Zhang~(1,3*) 1 Shanghai center for Cassava Biotechnology,Institute of plant physiology & Ecology,Shanghai Institutes for Biological {2.s,Chinese Academy of {2.s,300 Fenglin road,Shanghai 2.0032.china 2.Department of plant and Soil {2.s,University of Kentucky,Lexington,KY 40546,USA 3 chenshan plant science research center,Chinese Academy of {2.s,chenshan botanical {12.,3888 Chenhua road,Shanghai 2.1602,china

Anthocyanins are catalyzed by a series of enzymes in *** regulatory genes (*** factors) could regulate the biosynthetic pathway of anthocyanins in *** increase anthocyanin accumulation in sweet potato,over-expression of the maize(Zea mays L.) leaf colour(Lc) transcription factor in transgenic sweet potato was *** transgenic plants were regenerated from transformed calli of cultivar

关键词： Sweet potato anthocyanin biosynthesis transcription factor Lc systemic regulation

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Characterization of Structural Genes Involved in Anthocyanin Biosynthesis in Sweet potato(Ipomoea batatas Lam.)

Characterization of Structural Genes Involved in Anthocyanin...

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2.11全国植物生物学研讨会

作者： Hongxia Wang~a,peng Zhang~(a,b) a Institute of plant physiology & Ecology,Shanghai Institutes for Biological sciences,Chinese Academy of sciences,300 Fenglin road,Shanghai 2.0032.china b chenshan plant science research center,Chinese Academy of sciences,chenshan botanical garden,3888 Chenhua road,Shanghai 2.1602,china

purple sweet potato accumulates a high amount of anthocyanins,which are mainly composed of non-,mono-,and diacylated gluocosides of cyanidin and *** the function of anthocyanins from purple sweet potato has been well studied in food and pharmaceutical products,the biosynthesis of anthocyanins in the crop is still largely *** this study,four structural genes involved in anthocyanin biosynthesis,flavanone 3-hydroxyrase(F3H), dihydroflavonol 4-reductase(DFr),anthocyanidin synthase(ANS),and glucosyltransferase(GT),were cloned from the purple cultivar Ayamurasaki and intensively ***-expression of the full-length cDNAs of DFr,F3H,ANS

关键词： sweet potato anthocyanin biosynthesis expression regulation flavonoids

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Genetic variation of Ardisia crenata in south china revealed by nuclear microsatellite

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Journal of Systematics and Evolution 2010年第4期48卷 279-285页

作者： 1,2.ong-ping MU 1Lan HONG 1Hong-Lin CAO 1Zheng-Feng WANG 1Zhong-Chao LI 1 Hao SHEN 1Zhang-Ming WANG 1Wan-Hui YE 1(South china botanical {2.,Chinese Academy of sciences,Guangzhou 510650,china) 2.Graduate School of the Chinese Academy of sciences,Beijing 100049,china) (South china botanical {2. Chinese Academy of Sciences Guangzhou 510650 China) (Graduate School of the Chinese Academy of sciences Beijing 100049 China)

Ardisia crenata Sims,one of the most widely distributed Ardisia in the world,is an important ornamental and medicinal plant *** seven polymorphic nuclear microsatellite loci,we studied the genetic variation of 2. natural populations of *** across its distribution center in south *** deviation from the Hardy–Weinberg equilibrium in all populations and at all loci were detected,and the fixation index was high (FIS=0.72.),indicating that inbreeding may be dominant in the mixed mating system of this self-compatible *** average genetic diversity within populations was relatively low(HS=0.32.).There was significant genetic differentiation among populations(FST=0.583),which may have resulted from a high level of inbreeding and a low level of gene *** crenata in south {2. can be roughly divided into an eastern group and a western group,consistent with the floristic division of the Sino-Himalayan forest subkingdom and the Sino-Japanese forest *** may be separated glacial refugia in each region.

关键词： differentiation genetic variation inbreeding nuclear microsatellite

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Constructing the Metabolic and regulatory pathways in Germinating rice Seeds through proteomic Approach

Constructing the Metabolic and regulatory Pathways in Germin...

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第二届全国种子科学与技术学术研讨会

作者： Dongli He1,Chao Han1,Jialing Yao2.Shihua Shen3,pingfang Yang1 (1 Key Laboratory of plant Germplasm Enhancement and Speciality Agriculture,Wuhan botanical {2.,Chinese Academy of sciences,Wuhan 430074 china 2.College of life science,Huazhong Agriculture University,Wuhan,china 3 The research and Development center for Energy plants,Institute of Botany,Chinese Academy of sciences,Beijing 100093,china)

Construction of metabolic and regulatory pathway from proteome can contextualize the large scale data within the overall physiological scheme of an *** is an efficient way to predict metabolic phenotype or regulatory *** did protein profiling for the germinating rice seeds through one-dimensional electrophoresis via liquid chromatography tandem mass spectrometry proteomic shotgun *** than 670 proteins were identified,and could be sorted into 14 functional *** metabolic proteins were integrated into different metabolic pathways to show the style of reserves mobilization and precursor preparation during the *** of the regulatory proteins indicated that regulation of redox homeostasis and gene expression also play important roles for the rice seed *** transcription is unnecessary,it could ensure the rapidity and uniformity for the *** with the stored mrNA is required for the *** study will help us to further understand how the rice seed initiate and regulate its germination.

关键词： germination metabolic pathway proteomics rice seed

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