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第十四届全国植物基因组学大会

作者： Juxin Ruan Jianxu Li xiaoya chen national key laboratory of plant molecular genetics and national plant Gene Research Center Institute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChinese Academy of Sciences

From a cDNA library of Artemisia annua glandular trichomes,six cDNAs encoding putative terpene synthases(TPSs) were *** of them,AaTPS2,AaTPS5 and AaTPS6,appeared to encode monoterpene synthases containing a serine and... 详细信息

关键词： monoterpenes TPS Artemisia annua glandular trichomes

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GhHOX3 in cotton fiber elongation

GhHOX3 in cotton fiber elongation

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第十四届全国植物基因组学大会

作者： Hui Hong Chunmin Shan Changqing Yang Lingjiang Wang xiaoya chen national key laboratory of plant molecular genetics Institute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChinese Academy of Sciences

It has been proposed that cotton fiber and Arabidopsis leaf trichomes share common regulatory *** to the well-established model of the trichome development in Arabidopsis,our knowledge of the regulation of cotton fibe... 详细信息

关键词： cotton fiber GhHOX3 gene digital gene expression tag profiling

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The Genome of Medicinal plant Macleaya cordata Provides New Insights into Benzylisoquinoline Alkaloids Metabolism

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molecular plant 2017年第7期10卷 975-989页

作者： Xiubin Liu Yisong Liu Peng Huang Yongshuo Ma Zhixing Qing Qi Tang Huifen Cao Pi cheng Yajie Zheng Zejun Yuan Yuan Zhou Jinfeng Liu Zhaoshan Tang Yixiu Zhuo Yancong Zhang Linlan Yu Jialu Huang Peng Yang Qiong Peng dinbo Zhang Wenkai Jiang Zhonghua Zhang Kui Lin Dae-Kyun Ro xiaoya chen Xingyao Xiong Yi Shang Sanwen Huang Jianguo Zeng national and Local Union Engineering Research Center of Veterinary Herbal Medicine Resource and Initiative Hunan Co-Innovation Center for Utilization of Botanical Functional Ingredients Horticulture and Landscape College Veterinary Medicine College Hunan Agricultural University Changsha 410128 China institute of Vegetables and Flowers Chinese Academy of Agricultural Sciences Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture Sino-Dutch Joint Laboratory of Horticultural Genomics Beijing 100081 China Agricuitural Genome institute at Shenzhen Chinese Academy of Agricultural Sciences Shenzhen 518124 China School of Pharmacy Hunan University of Chinese Medicine Changsha 410208 China MOE key laboratory for Biodiversity Science and Ecological Engineering and College of Life sciences Beijing Normal University Beijing 100875 China Micolta Bioresource Inc. Changsha 410016 China Herbal Extract Engineering Research Center Changsha 410331 China Biotechnology Research Center Hunan Academy of Agricultural Sciences Changsha 410125 China Novogene Bioinformatics institute Beijing 100083 China Department of biological sciences University of Calgary Calgary T2N1N4 Canada national key laboratory of plant molecular genetics National Plant Gene Research Center Institute of Plant Physiology and Ecology Shanghai Institutes forBiological Sciences Chinese Academy of Sciences Shanghai 200032 China plant Science Research Center Shanghai Chenshan Botanical Garden Shanghai 201602 China

The overuse of antibiotics in animal agriculture and medicine has caused a series of potential threats to public health. Macleaya cordata is a medicinal plant species from the Papaveraceae family, providing a safe resource for the manufacture of antimicrobial feed additive for livestock. The active constituents from M. cordata are known to include benzylisoquinoline alkaloids （BIAs） such as sanguinarine （SAN） and chelerythrine （CHE）, but their metabolic pathways have yet to be studied in this non-model plant. The active biosynthesis of SAN and CHE in M. cordata was first examined and confirmed by feeding ^13C-labeled tyrosine. To gain further insights, we de novo sequenced the whole genome of M. cordata, the first to be sequenced from the Papaveraceae family. The M. cordata genome covering 378 Mb encodes 22,328 predicted protein-coding genes with 43.5% being transposable elements. As a member of basal eudicot, M. cordata genome lacks the paleohexaploidy event that occurred in almost all eudicots. From the genomics data, a complete set of 16 metabolic genes for SAN and CHE biosynthesis was retrieved, and 14 of their biochemical activities were validated. These genomics and metabolic data show the conserved BIA metabolic pathways in M. cordata and provide the knowledge foundation for future productions of SAN and CHE by crop improvement or microbial pathway reconstruction.

关键词： Macleaya cordata genome Benzylisoquinoline alkaloids Secondary metabolism Sanguinarine Chelerythrine Isotopic labeling

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molecular regulation of age-dependent JA response decay in Arabidopsis

Molecular regulation of age-dependent JA response decay in A...

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2016年全国植物生物学大会

作者： Ying-Bo mao Yao-Qian Liu Jia-Wei Wang Xiao-Ya chen national key laboratory of plant molecular genetics Institute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChinese Academy of Sciences

The JA signaling pathway plays important roles in plant defense against herbivorous insects. Jasmonate ZIM-domain(JAZ) proteins,which are the repressors of JA signaling,have two conserved domains: the N-terminal ZIM domain and the C-terminal Jas domain. The Jas domain is a proteinprotein interaction surface required for binding to either the transcription factors such as MYC2,or CORONATINE INSENSITIVE1(COI1),a component of the ubiquitin E3 ligase SCFCOI1. In normal conditions,the relatively high level of JAZs represses the activity of transcription factors. External stimuli,such as wounding or insect attack,cause rapid rise of JA-Ile concentration in plant cell,which triggers COI1-JAZ interaction and degradation of JAZs by the 26 S proteasome,releasing the transcription factors to activate downstream defense genes. Therefore,the abundance of JAZ proteins in cells,determined largely by the rates of protein degradation,controls the output of JA response. Here we reported that JA response decayed in an age dependent manner and this was controlled by mi R156-SPL module. mi R156 targeted SPLs dampens JA responses in leaves of adult plant by stabilizing JAZ proteins. However,leaves from adult plant actually have enhanced resistance to insect herbivore. We found contrary to JA response,the major defense compounds in plants of Brassicaceae,glucosinolates(GLSs) in leaves increase sequentially,a tendency independent of the mi R156-SPLs or the JA signaling. Thus,the two pathways change in reverse directions: while the JA-mediated inductive defense fades away,secondary metabolites deposit cumulatively. Our data provide new insight into the balanced regulation over defense systems.

关键词： JA response insect resistance JAZ proteins miR156-SPL module

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Plasma Membrane Localization and Potential Endocytosis of Constitutively Expressed XA21 Proteins in Transgenic Rice

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molecular plant 2010年第5期3卷 917-926页

作者： Fang chen Ming-Jun Gao Yan-Song Miao Yue-Xing Yuan Mu-Yang Wang Qun Li Bi-Zeng mao Li-Wen Jiang Zu-Hua He 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 Present address: Department of molecular Cellular and Developmental Biology Yale University New Haven CT 06511 USA Department of Biology and molecular Biotechnology Program The Chinese University of Hong Kong Shatin New Territories Hong Kong China Present address: Department of Emergency Medicine Thomas Jefferson University Philadelphia PA 19107 USA Biotechnology institute Zhejiang University Hanghzou 310029 China

The rice pattern recognition receptor （PRR） XA21 confers race-specific resistance in leaf infection by bacterial blight Xathornonas oryzae pv. oryzae （Xoo）, and was shown to be primarily localized to the endoplasmic reticulum （ER） when expressed with its native promoter or overexpressed in the protoplast. However, whether the protein is still ER- localization in the intact cell when overexpressed remains to be identified. Here, we showed that XA21, its kinase-dead mutant XA21PK736EP and the triple autophosphorylation mutant XA21PS686AJT688AJS699A GFP fusions were primarily localized to the plasma membrane （PM） when overexpressed in the intact transgenic rice cell, and also localized to the ER in the transgenic protoplast. The transgenic plants constitutively expressing the wild-type XA21 or its GFP fusion displayed racespecific resistance to Xoo at the adult and seedling stages. XA21 and XA21PK736EP could be internalized probably via the SCAMP-positive early endosomal compartment in the protoplast, suggesting that XA21 might be endocytosed to initiate resistance responses during pathogen infection. We also established a root infection system and demonstrated that XA21 also mediated race-specific resistance responses to Xoo in the root. Our current study provides an insight into the nature of the XA21-mediated resistance and a practical approach using the root cell system to further dissect the cellular signaling of the PRR during the rice-Xoo interaction.

关键词： Rice XA21 pattern recognition receptor bacterial bight cellular localization internalization root infection race-specific resistance.

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