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Engineering gossypol biosynthesis and cotton resistance to insects

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Engineering gossypol biosynthesis and cotton resistance to i...

A New Strategy of Insect Pest Control:Down-regulating Cotton Bollworm Gene Expression by Engineering plant Double Stranded RNA

第十一届全国植物基因组学大会

作者： xiaoya chen~*,yingbo mao,Changqing Yang,Xiaoyuan Tao,Lingjian Wang national key laboratory of plant molecular genetics,institute of plant physiology and ecology.shanghai institutes for biological sciences.chinese academy of sciences.shanghai 2.0032.china

Cotton plants accumulate gossypol and related toxic sesquiterpene aldehydes to protect plants against pathogens and insect ***,these secondary metabolites greatly limit the utilization of cottonseeds as a rich resourc...

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棉花学报 2008年第S1期20卷 8-页

作者： mao Ying-bo,xue xue-yi,WANG Ling-jiang,chen Xiao-ya(national key Lab of plant Mol genetics,institute of plant physiology and ecology.shanghai institutes for biological sciences.chinese academy of sciences,300 Fenglin Road,shanghai 2.0032.china)

Cotton bollworm(Helicoverpa armigera) is an important agricultural pest that causes severe yield loss to crops,particularly to *** Bt crops have been successful in

关键词： RNAi A New Strategy of Insect Pest Control Down

Engineering purple rice for human health

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Science china(Life sciences) 2018年第3期61卷 365-367页

作者： Xin Fang yingbo mao xiaoya chen national key laboratory of plant molecular genetics CAS Center for Excellence in Molecular Plant Sciences Institute of Plant Physiology and Ecology SIBS Chinese Academy of Sciences plant Science Research Center Shanghai Key Laboratory of Plant Functional Genomics and ResourcesShanghai Chenshan Botanical Garden

Human history of domestication of wild plants as food source has witnessed continuous improvement in nutritional qualities of plant products. However, some nutritional traits were lost during agriculatral breeding （Tieman et al., 2017）, and some are absent in certain wild ancestors and could not be introduced into modem crops by traditional breeding. Micronutrient and phytonutrient deficiencies have devastat- ing effects to human health, especially to poor populations （FAO, 2013）, biofortification of food crops by molecular breeding is important to resolve these problems. Currently, there are two main strategies for biofortification, one is to increase level of already existing health-promotion com- pounds in plants, such as anthocyanin-enriched ＂Purple Tomatoes＂（Butelli et al., 2008） and folate-enriched rice （Blancquaert et al., 2015）. The other is to transfer a biosyn- thetic pathway of bioactive compounds into a plant organ absent of them, such as 13-carotene-enriched ＂Golden Rice＂（Ye et al., 2000; Paine et al., 2005）; this strategy is mostly a difficult task using conventional cloning vector systems or current transgene-stacking vector systems that enable assembly of limited numbers of target genes into single vectors with sophisticated strategies, such as using homing endonuclease sites or Multisite Gateway. Thus,

关键词：健康米饭紫色植物产品工程食物来源调制解调器繁殖期

Transcriptome analysis of three cotton pests reveals features of gene expressions in the mesophyll feeder Apolygus lucorum

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Science china(Life sciences) 2017年第8期60卷 826-838页

作者： Dianyang chen Fangyan chen Chunyu chen xiaoya chen yingbo mao national key laboratory of plant molecular genetics CAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghai 200032China University of chinese academy of sciences Beijing 100049China

The green mirid bug Apolygus lucorum is an agricultural pest that is known to cause damage to more than 150 plant species. Here, we report the transcriptomes ofA. lucorum at three different developmental stages （the second and fifth instar nymphs and adults）. A total of 98,236 unigenes with an average length of 1,335nt was obtained, of which 50,640 were annotated, including those encoding digestive enzymes and cytochrome P450s. Comparisons with cotton bollworm and cotton aphid transcriptomes revealed distinct features ofA. lucorum as a mesophyll feeder. The gene expression dynamics varied during development from young nymphs to adults. The high-quality transcriptome data and the gene expression dynamics reported here provide valuable data for a more comprehensive understanding of the physiology and development of mirid bugs, and for mining targets for their control.

关键词： Apolygus lucorum transcriptome digestion enzymes developmental stage

Gossypol: phytoalexin of cotton

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Science china(Life sciences) 2016年第2期59卷 122-129页

作者： Xiu Tian Juxin Ruan Jinquan Huang Xin Fang yingbo mao Lingjian Wang xiaoya chen Changqing Yang School of Life sciences Nanjing University Nanjing 210023 China national key laboratory of plant molecular genetics and national Center for plant Gene Research Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai 200032 China plant Science Research Center Shanghai Chenshan Botanical Garden Shanghai Key Laboratory of Plant Functional Genomics and Resources Shanghai 201602 China

Sesquiterpenoids are a class of 15-carbon secondary metabolites that play diverse roles in plant adaptation to environment. Cotton plants accumulate a large amount of sesquiterpene aldehydes （including gossypol） as phytoalexins against pathogens and herbivores. They are stored in pigment glands of aerial organs and in epidermal layers of roots. Several enzymes of goss- ypol biosynthesis pathway have been characterized, including 3-hydroxy-3-methylglutaryl coenzyme A reductase （HMGR） and farnesyl diphosphate synthase （FPS） that catalyze the formation of the precursor farnesyl diphosphate （FPP）, （＋）-6-cadinene synthase （CDN） which is the first enzyme committed to gossypol biosynthesis, and the downstream enzymes of CYP706B 1 and methyltransferase. Expressions of these genes are tightly regulated during cotton plants development and in- duced by jasmonate and fungi elicitors. The transcription factor GaWRKY1 has been shown to be involved in gossypol path- way regulation. Recent development of new genomic platforms and methods and releases of diploid and tetraploid cotton ge- nome sequences will greatly facilitate the elucidation of gossypol biosynthetic pathway and its regulation.

关键词： cotton secondary metabolism gossypol sesquiterpenoid

Arabidopsis trichome research sheds light on cotton fiber development mechanisms

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chinese Science Bulletin 2007年第13期52卷 1734-1741页

作者： GUAN xueying YU Nan SHANGGUAN XiaoXia WANG Shui LU Shan WANG LingJian chen xiaoya national key laboratory of plant molecular genetics Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai 200032 China College of Life sciences Nanjing University Nanjing 210093 China

Aerial surfaces of most land plants have epidermal hairs (trichomes).Both Arabidopsis thaliana trichomes and cotton fibers (seed hairs) are nonglandular hairs with unicellular *** we out-line the recent progress on molecular dissection of Arabidopsis trichome development,including the transcription factors regulating trichome initiation,phytohormones influencing trichome density,and the cytoskeleton formation system governing trichome *** is increasing evidence showing that these processes also control cotton fiber *** several cotton fiber genes are able to rescue the Arabidopsis trichome mutants,we discuss the conservation between Arabidopsis trichome and cotton fiber development.

关键词：阿布属棉属毛状体棉花纤维

Transcriptional Regulation of plant Secondary Metabolism

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Journal of Integrative plant Biology 2012年第10期54卷 703-712页

作者： Chang-Qing Yang Xin Fang Xiu-Ming Wu Ying-Bo mao Ling-Jian Wang Xiao-Ya chen national key laboratory of plant molecular genetics Institute of Plant Physiology and Ecology Shanghai Institutes for BiologicalSciences the Chinese Academy of Sciences Shanghai 200032 China plant Science Research Center. Shanahai chensh-an Botanical Garden. Shanahai 201602. china

plant secondary metabolites play critical roles in plant-environment interactions. They are synthesized in different organs or tissues at particular developmental stages, and in response to various environmental stimuli, both biotic and abiotic. Accordingly, corresponding genes are regulated at the transcriptional level by multiple transcription factors. Several families of transcription factors have been identified to participate in controlling the biosynthesis and accumulation of secondary metabolites. These regulators integrate internal （often developmental） and external signals, bind to corresponding cis-elements -- which are often in the promoter regions -- to activate or repress the expression of enzyme-coding genes, and some of them interact with other transcription factors to form a complex. In this review, we summarize recent research in these areas, with an emphasis on newly-identified transcription factors and their functions in metabolism regulation.

关键词： Alkaloid phenylpropanoid secondary metabolism terpenoid transcription factor.

Cotton genome: challenge into the polyploidy

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Science Bulletin 2017年第24期62卷 1622-1623页

作者： Zhi-Wen chen Jun-Feng Cao Xiu-Fang Zhang Xiao-Xia Shangguan Ying-Bo mao Ling-Jian Wang Xiao-Ya chen national key laboratory of plant molecular genetics and national Center for plant Gene Research Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences plant Science Research Center Shanghai Chenshan Botanical Garden Shanghai Key Laboratory of Plant Functional Genomics and Resources

Cottons are the most important fiber crops in the *** cotton genus Gossypium has 52 species,including seven allotetraploid species and 45 *** species were domesticated and remain as crops under cultivation today:the New World allopolyploid species *** and ***(2n=52),and the Old World diploid species *** and ***(2n=26).The primary cultivated species is Upland cotton(*** L.),which accounts for more than 90%of global cotton fiber production.

关键词： Cotton genome challenge into the polyploidy

plant Terpenoids： Biosynthesis and Ecological Functions

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Journal of Integrative plant Biology 2007年第2期49卷 179-186页

作者： Ai-Xia cheng Yong-Gen Lou Ying-Bo mao Shan Lu Ling-Jian Wang Xiao-Ya chen national key laboratory of plant molecular genetics Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences the Chinese Academy of Sciences Shanghai 200032 China institute of Insect sciences Zhejiang University Hangzhou 310029 China

Among plant secondary metabolites terpenolds are a structurally most diverse group; they function as phytoalexins In plant direct defense, or as signals In Indirect defense responses which involves herbivores and their natural enemies. In recent years, more and more attention has been paid to the Investigation of the ecological role of plant terpenolds. The biosynthesis pathways of monoterpenes, sesquiterpenes, and diterpenes Include the synthesis of C5 precursor isopentenyl diphosphate （IPP） and Its allylic isomer dlmethylallyl dlphosphate （DMAPP）, the synthesis of the immediate diphosphate precursors, and the formation of the diverse terpenoids. Terpene synthases （TPSs） play a key role In volatile terpene synthesis. By expression of the TPS genes, significant achievements have been made on metabolic engineering to Increase terpenoid production. This review mainly summarizes the recent research progress In elucidating the ecological role of terpenoids and characterization of the enzymes Involved in the terpenold biosynthesis. Spatial and temporal regulations of terpenoids metabolism are also discussed.

关键词： chemical ecology metabolism regulation plant terpenoids terpene synthase.