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Cotton genome: challenge into the polyploidy

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

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Phosphatidic Acid Regulates BZR1 Activity andBrassinosteroid Signal of Arabidopsis

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molecular plant 2014年第2期7卷 445-447页

作者： Ping Wu Hong-Bo Gao Liang-Li Zhang Hong-Wei xue wen-Hui Lin [a] Key laboratory of plant molecular physiology Institute of Botany Chinese Academy of Sciences Beijing 100093 China [b] University of chinese academy of sciences Beijing 100049 China [c] national Key laboratory of plant molecular genetics Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences 200032 Shanghai China

Dear Editor, Brassinosteroid （BR） is an important hormone and playscrucial roles in plant growth and development （Kim andWang, 2010）. genetics studies identify many componentsinvolving in BR signaling, including transcript factor BZR1（BRASSINAZOLE RESISTANT 1）. BZR1 is dephosphorylated （Heet al., 2005） to regulate expression of target genes. A sin-gle amino acid mutation in BZR1 PEST domain results inenhanced binding and dephosphorylation by PP2A （PROTEINPHOSPHATASE 2A; Tang et al., 2011）, leading to constitutivelyactivated BZR1 and enhanced BR signal in gain-of-functionmutant bzr1-1D. Although BR signal is well characterized inArabidopsis, how the components of BR signaling transduc-tion pathway are reclulated needs further illustrations.

关键词： ILLUSTRATIONS Brassinosteroids Dephosphorylation Phosphatidic acids bromine plant growth Arabidopsis signals Growth and development, plant

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Altered Disease Development in the eui Mutants and Eui Overexpressors Indicates that Gibberellins Negatively Regulate Rice Basal Disease Resistance

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molecular plant 2008年第3期1卷 528-537页

作者： Dong-Lei Yang Qun Li Yi-wen Deng Yong-Gen Lou Mu-Yang Wang Guo-Xing Zhou Ying-Ying Zhang Zu-Hua He national Key laboratory of plant molecular genetics Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences Chinese Academyof Sciences Shanghai China institute of Insect Science College of Agriculture and Biotechnology Zhejiang University Hangzhou China

Gibberellins （GAs） form a group of important plant tetracyclic diterpenoid hormones that are involved in many aspects of plant growth and development. Emerging evidence implicates that GAs also play roles in stress responses. However, the role of GAs in biotic stress is largely unknown. Here, we report that knockout or overexpression of the Elongated uppermost internode （Eu~ gene encoding a GA deactivating enzyme compromises or increases, respectively, disease resistance to bacterial blight （Xanthomonas oryzae pv. oyrzae） and rice blast （Magnaporthe oryzae）. Exogenous application of GA3 and the inhibitor of GA synthesis （uniconazol） could increase disease susceptibility and resistance, respectively, to bacterial blight. Similarly, uniconazol restored disease resistance of the eui mutant and GA3 decreased disease resistance of the Eui overexpressors to bacterial blight. Therefore, the change of resistance attributes to GA levels. In consistency with this, the GA metabolism genes OsGA2Oox2 and OsGA20xl were down-regulated during pathogen challenge. We also found that PRla induction was enhanced but the SA level was decreased in the Eui overexpressor, while the JA level was reduced in the eui mutant. Together, our current study indicates that GAs play a negative role in rice basal disease resistance, with EUI as a positive modulator through regulating the level of bioactive GAs.

关键词： Gallium Disease resistance stress response plant growth European University institute Disease Susceptibility Xanthomonas oryzae Mutants Growth and development, plant Gibberellins

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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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甜味剂莱鲍迪苷D的高效生物催化合成

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食品与发酵工业 2018年第4期44卷 1-7页

作者：费理文王勇上海市农业科学院食用菌研究所农业部南方食用菌资源利用重点实验室国家食用菌工程技术研究中心国家食用菌加工技术研发分中心上海市农业遗传育种重点开放实验室上海201403 中科院上海生命科学研究院植物生理生态研究所上海200032

采用来自水稻的UDP-糖基转移酶EUGT11并结合染色体改造构建了大肠杆菌工程菌,用于全细胞催化莱鲍迪苷A(Rebaudioside A,RA)生产莱鲍迪苷D(Rebaudioside D,RD)。为了增加宿主细胞内源性糖配体葡萄糖尿苷二磷酸(uridine diphosphate gluco... 详细信息

采用来自水稻的UDP-糖基转移酶EUGT11并结合染色体改造构建了大肠杆菌工程菌,用于全细胞催化莱鲍迪苷A(Rebaudioside A,RA)生产莱鲍迪苷D(Rebaudioside D,RD)。为了增加宿主细胞内源性糖配体葡萄糖尿苷二磷酸(uridine diphosphate glucose,UDPG)的供给以满足糖基化反应需要,以大肠杆菌BL21(DE3)为出发菌对UDPG代谢通径进行改造,获得了一系列改造菌株SG1、SG2、SG3和SG4。其中以SG4为宿主过表达可高效催化RA合成RD的糖基转移酶EUGT11进行全细胞催化,RD产量高。随后以此工程菌为对象,对可能影响RD催化合成的条件进行了研究,结果表明50 m L培养菌液离心所收集新鲜菌体可在100 mmol/L pH 8.0磷酸钠缓冲液、80 mmol/L柠檬酸钠、体积分数0.1%Triton X100、500 g/L蔗糖、5 mmol/L Zn Cl2、42℃转化1 d的条件下催化1 mmol/L RA底物生成1112.21 mg/L RD,转化率可达98.5%。

关键词：甜叶菊莱鲍迪苷A(Rebaudioside A,RA) 莱鲍迪苷D(Rebaudioside D,RD) 重组大肠杆菌全细胞催化

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Preparation of Ethylene Gas and Comparison of Ethylene Responses Induced by Ethylene, ACC, and Ethephon

Preparation of Ethylene Gas and Comparison of Ethylene Respo...

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2010全国植物生物学研讨会

作者： Wei Zhang Chi-Kuang wen national Key laboratory of plant molecular genetics Institute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChinese Academy of Sciences

Ethylene is a gaseous plant hormone used in many physiological studies examining its role in plant growth and ***,ethylene gas may not be conveniently available to many laboratories for occasional use,and therefore se...

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