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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： SYSTEMIC ACQUIRED-RESISTANCE SALICYLIC-ACID CELL-DEATH SIGNALING PATHWAY GREEN-REVOLUTION DEPENDENT GROWTH

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A LysM Receptor Heteromer Mediates Perception of Arbuscular Mycorrhizal Symbiotic Signal in Rice

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molecular plant 2019年第12期12卷 1561-1576页

作者： Jiangman He Chi zhang Huiling Dai Huan Liu Xiaowei zhang Jun Yang Xi Chen Yayun Zhu Dapeng Wang Xiaofeng Qi Weichao Li Zhihui Wang Guoyong An Nan YU Zuhua He Yong-Fei Wang Youli Xiao peng zhang Ertao Wang 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 100039China College of Life and Environment sciences Shanghai Normal UniversityShanghai 200234China Collaborative Innovation Center of Crop Stress Biology Henan ProvinceInstitute of Plant Stress BiologyState Key Laboratory of Cotton BiologyDepartment of BiologyHenan UniversityKaifeng 475001China

Symbiotic microorganisms improve nutrient uptake by *** initiate mutualistic symbiosis with arbus-cular mycorrhizal(AM)fungi,plants perceive Myc factors,including lipochitooligosaccharides(LCOs)and short-chain chitooligosaccharides(CO4/CO5),secreted by AM ***,the molecular mechanism of Myc factor perception remains *** this study,we identified a heteromer of LysM receptor-like kinases consisting of OsMYR1/OsLYK2 and OsCERK1 that mediates the perception of AM fungi in ***4 directly binds to OsMYR1,promoting the dimerization and phosphorylation of this receptor *** with control plants,Osmyr1 and Oscerk1 mutant rice plants are less sensitive to Myc factors and show decreased AM *** engineered transgenic rice by expressing chimeric receptors that respectively replaced the ectodomains of OsMYR1 and OsCERK1 with those from the homologous Nod factor receptors MtNFP and MtL YK3 of Medicago *** plants displayed increased cal-cium oscillations in response to Nod factors compared with control *** study provides significant mechanistic insights into AM symbiotic signal perception in *** of chimeric Nod/Myc recep-tors achieves a potentially important step toward generating cereals that host nitrogen-fixing bacteria.

关键词： rice arbuscular mycorrhizal symbiosis Myc factors Nod factors LysM receptor-like kinases

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Tumor-derived neomorphic mutations in ASXL1 impairs the BAP1-ASXL1-FOXK1/K2 transcription network

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Protein & Cell 2021年第7期12卷 557-577页

作者： Yu-Kun Xia Yi-Rong Zeng Meng-Li zhang peng Liu Fang Liu Hao zhang Chen-Xi He Yi-Ping Sun Jin-Ye zhang Cheng zhang Lei Song Chen Ding Yu-Jie Tang Zhen Yang Chen Yang Pu Wang Kun-Liang Guan Yue Xiong Dan Ye Huashan Hospital Fudan Universityand Molecular and Cell Biology LabInstitutes of Biomedical Sciencesand the Shanghai Key Laboratory of Medical Epigeneticsand the Key Laboratory of Metabolism and MolecularMinistry of EducationShanghai 200032China The International Co-laboratory of Medical Epigenetics and Metabolism Ministry of Science and TechnologyShanghai 200032China Department of Neurosurgery Huashan HospitalFudan UniversityShanghai 200032China key laboratory of Cell Differentiation and Apoptosis of national Ministry of Education Department of PathophysiologyShanghai Jiao Tong University School of MedicineShanghai 200025China key laboratory of Synthetic Biology Institute of Plant Physiology and EcologyShanghai 200032China institutes for biological sciences Chinese Academy of SciencesShanghai 200032China State key laboratory of Proteomics Beijing Proteome Research CenterBeijing Institute of Radiation MedicineBeijing 102206China national Center for Protein sciences(The PHOENIX Center Beijing)Beijing 102206China State key laboratory of Genetic Engineering and Collaborative Innovation Center for genetics and Development School of Life SciencesInstitutes of Biomedical SciencesFudan UniversityShanghai 200032China Department of Pharmacology and Moores Cancer Center University of California San DiegoLa JollaCAUSA Lineberger Comprehensive Cancer Center Department of Biochemistry and BiophysicsUniversity of North CarolinaChapel HillNCUSA Department of General Surgery Huashan HospitalFudan UniversityShanghai 200032China

Additional sex combs-like 1(ASXL1)interacts with BRCA1-associated protein 1(BAP1)deubiquitinase to oppose the polycomb repressive complex 1(PRC1)-mediated histone H2A *** BAP1 mutations are found in a spectrum of human malignancies,while ASXL1 mutations recurrently occur in myeloid neoplasm and are associated with poor *** all ASXL1 mutations are heterozygous frameshift or nonsense mutations in the middle or to a less extent the C-terminal region,resulting in the production of C-terminally truncated mutant ASXL1 *** ASXL1 regulates specific target genes and how the C-terminal truncation of ASXL1 promotes leukemogen-esis are ***,we report that ASXL1 interacts with forkhead transcription factors FOXK1 and FOXK2 to regulate a subset of FOXK1/K2 target *** show that the C-terminally truncated mutant ASXL1 proteins are expressed at much higher levels than the wild-type protein in ASXL1 heterozygous leukemia cells,and lose the ability to interact with FOXK1/*** deletion of the mutant allele eliminates the expression of C-termi-nally truncated ASXL1 and increases the association of wild-type ASXL1 with BAP1,thereby restoring the expression of BAP1-ASXL1-FOXK1/K2 target genes,particularly those involved in glucose metabolism,oxygen sensing,and JAK-STAT3 signaling *** addition to FOXK1/K2,we also identify other DNA-bind-ing transcription regulators including transcription factors(TFs)which interact with wild-type ASXL1,but not C-terminally truncated *** results suggest that ASXL1 mutations result in neomorphic alleles that contribute to leukemogenesis at least in part through dominantly inhibiting the wild-type ASXL1 from interacting with BAP1 and thereby impairing the function of ASXL1-BAP1-TF in regulating target genes and leukemia cell growth.

关键词： ASXL1 BAP1 FOXK1/K2 leukemia epigenetics

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Genetic Engineering of Cassava and Sweet Potato for Industrial Applications

Genetic Engineering of Cassava and Sweet Potato for Industri...

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2010全国植物生物学研讨会

作者： Jun Yang Shanshan Zhao dong An Huiping Bi Jia Xu Qiuxiang Ma Min zhang Jia Liu peng zhang institute of plant physiology & ecology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences

Cassava(Manihot esculenta Crantz)and sweetpotato(Ipomoea batatas)accumulate a lot of starch in their storage roots which can be processed to food,feed and *** high yield potential and robustness against unfavorable en... 详细信息

关键词： Cassava sweetpotato genetic improvement transgenesis industrialization

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Transcription factors AS1 and AS2 interact with LHP1 to repress KNOX genes in Arabidopsis

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Journal of Integrative plant Biology 2016年第12期58卷 959-970页

作者： Zhongfei Li Bin Li Jian Liu Zhihao Guo Yuhao Liu Yan Li Wen-Hui Shen Ying Huang Hai Huang Yijing zhang Aiwu dong State key laboratory of Genetic Engineering International Associated Laboratory of CNRS-Fudan-HUNAU on Plant Epigenome Research Collaborative Innovation Center for Genetics and Development Institute of Plant Biology School of Life Sciences Fudan University Shanghai 200433 China national laboratory of plant molecular genetics Shanghai Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai 200032 China national Center for Protein Science shanghai State Key Laboratory of Molecular Biology Shanghai State Key Laboratory of Molecular Andrology Institute of Biochemistry and Cell Biology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai 201203 China Institut de Biologie Moléculaire des plantes du CNRS Université de Strasbourg 12 rue du General Zimmer 67084 Strasbourg Cedex France

Polycomb group proteins are important repressors of numerous genes in higher eukaryotes. However, the mechanism by which Polycomb group proteins are recruited to specific genes is poorly understood. In Arabidopsis, LIKE HETEROCHROMATIN PROTEIN 1 （LHP1）, also known as TERMINAL FLOWER 2, was originally proposed as a subunit of polycomb repressive complex 1 （PRC1） that could bind the tri-methylated lysine 27 of histone H3 （H3K27me3） established by the PRC2. In this work, we show that LHP1 mainly functions with PRC2 to establish H3K27me3, but not with PRC1 to catalyze monoubiquitination at lysine 119 of histone H2A. Our results show that complexes of the transcription factors ASYMMETRIC LEAVES 1 （AS1） and AS2 could help to establish the H3K27me3 modification at the chromatin regions of Class-I KNOTTED＇t-like homeobox （KNOX） genes BREVIPEDICELLU5 and KNAT2 via direct interactions with LHP1. Additionally, our transcriptome analysis indicated that there are probably more common target genes of AS1 and LHP1 besides Class-I KNOX genes during leaf development in Arabidopsis.

关键词： Arabidopsis thaliana ASYMMETRIC LEAVES 1

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molecular Basis for Sesterterpene Diversity Produced by plant Terpene Synthases

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plant Communications 2020年第5期1卷 41-52页

作者： Qingwen Chen Jianxu Li Zhixi Liu Takaaki Mitsuhashi Yuting zhang Haili Liu Yihua Ma Juan He Tetsuro Shinada Tsutomu Sato Yong Wang Hongwei Liu Ikuro Abe peng zhang Guodong Wang State key laboratory of plant Genomics and national Center for plant Gene Research Institute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing 100101China national key laboratory of plant molecular genetics Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China Graduate School of Pharmaceutical sciences University of Tokyo7-3-1 HongoBunkyo-kuTokyo 113-0033Japan State key laboratory of Mycology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China key laboratory of Synthetic Biology Institute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghai 200032China University of chinese academy of sciences Beijing 100039China Graduate School of Science Osaka City University3-3-138 SugimotoSumiyoshiOsaka 558-8585Japan Department of Applied biological Chemistry Faculty of AgricultureGraduate School of Science and TechnologyNiigata University8050 Ikarashi-2Niigata 950-2181Japan

Class I terpene synthase(TPS)generates bioactive terpenoids with diverse *** synthase(sester-TPS,C25),a branch of class I TPSs,was recently identified in ***,the catalytic mechanisms of sester-TPSs are not fully ***,we first identified three nonclustered functional sester-TPSs(AtTPS06,AtTPS22,and AtTPS29)in Arabidopsis ***06 utilizes a type-B cyclization mechanism,whereas most other sester-TPSs produce various sesterterpene backbones via a type-A cyclization *** then determined the crystal structure of the AtTPS18–FSPP complex to explore the cyclization mechanism of plant *** used structural comparisons and site-directed mutagenesis to further elucidate the mechanism:(1)mainly due to the outward shift of helix G,plant sester-TPSs have a larger catalytic pocket than do mono-,sesqui-,and di-TPSs to accommodate GFPP;(2)type-A sester-TPSs have more aromatic residues(five or six)in their catalytic pocket than classic TPSs(two or three),which also determines whether the type-A or type-B cyclization mechanism is active;and(3)the other residues responsible for product fidelity are determined by interconversion of AtTPS18 and its close ***,this study improves our understanding of the catalytic mechanism of plant sester-TPS,which ultimately enables the rational engineering of sesterterpenoids for future applications.

关键词： terpenoid terpene synthase sesterterpene cyclization mechanism crystal structure

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Roles of plant Hormones and Their Interplay in Rice Immunity

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molecular plant 2013年第3期6卷 675-685页

作者： dong-Lei Yang Yinong Yang Zuhua He The institute of plant physiology and ecology Shanghai Institute for Biological Sciences Chinese Academy of Sciences Shanghai 200032 China shanghai Center for plant Stress Biology Shanghai Institute for Biological Sciences Chinese Academy of Sciences Shanghai 200032 China Department of plant Pathology and Environmental Microbiology and Huck Institutes of Life Sciences Pennsylvania State University PA 16802 USA

ABSTRACT plant hormones have been extensively studied for their importance in innate immunity particularly in the dicotyledonous model plant Arabidopsis thaliana. However, only in the last decade, plant hormones were demonstrated to play conserved and divergent roles in fine-tuning immune responses in rice （Oryza sativa L.）, a monocotyledonous model crop plant. Emerging evidence showed that salicylic acid （SA） plays a role in rice basal defense but is differentially required by rice pattern recognition receptor （PRR） and resistance （R） protein-mediated immunity, and its function is likely dependent on the signaling pathway rather than the change of endogenous levels. Jasmonate （JA） plays an important role in rice basal defense against bacterial and fungal infection and may be involved in the SA-mediated resistance. Ethylene （ET） can act as a positive or negative modulator of disease resistance, depending on the pathogen type and environmental conditions. Brassinosteroid （BR） signaling and abscisic acid （ABA） either promote or defend against infection of pathogens with distinct infection/colonization strategies. Auxin and gibberellin （GA） are generally thought of as negative regulators of innate immunity in rice. Moreover, GA interacts antagonistically with JA signaling in rice development and immunity through the DELLA protein as a master regulator of the two hormone pathways. In this review, we summarize the roles of plant hormones in rice immunity and discuss their interplay/crosstalk mechanisms and the complex regulatory network of plant hormone pathways in fine-tuning rice immunity and growth.

关键词： hormone biology defense responses plant-microbe interactions rice

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Global Analysis of Gene Expression Profiles in Brassica napus Developing Seeds Reveals a Conserved Lipid Metabolism Regulation with Arabidopsis thaliana

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molecular plant 2009年第5期2卷 1107-1122页

作者： Ya Niu Guo-zhang Wu Rui Ye Wen-Hui Lin Qiu-Ming Shi Liang-Jiao Xue Xiao-dong Xu Yao Li Yu-Guang Du Hong-Wei Xue national key laboratory of plant molecular genetics Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Science (SIBS) Chinesecademy of Sciences 300 Fenglin Road 200032 Shanghai China United Gene Holdings Ltd. 3-5 1111 ZhongshanBeier Road 200092 Shanghai China The Nature Products and Glycoconjugate Research Group Dalian Institute of Chemical Physics Chinese Academy of Sciences 47 Zhongshan Road 16023Dalian Liaoning China

In order to study Brassica napus fatty acid （FA） metabolism and relevant regulatory networks, a systematic identification of fatty acid （FA） biosynthesis-related genes was conducted. Following gene identification, gene expression profiles during B. napus seed development and FA metabolism were performed by cDNA chip hybridization （〉8000 EST clones from seed）. The results showed that FA biosynthesis and regulation, and carbon flux, were conserved between B. napus and Arabidopsis. However, a more critical role of starch metabolism was detected for B. napus seed FA metabolism and storage-component accumulation when compared with Arabidopsis. In addition, a crucial stage for the transition of seed-to-sink tissue was 17-21 d after flowering （DAF）, whereas FA biosynthesis-related genes were highly expressed pri- marily at 21 DAF. Hormone （auxin and jasmonate） signaling is found to be important for FA metabolism. This study helps to reveal the global regulatory network of FA metabolism in developing B. napus seeds.

关键词： Fatty acid Brassica napus seed development starch EST.

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Sinorhizobium meliloti lsrB is involved in alfalfa root nodule development and nitrogen-fixing bacteroid differentiation

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chinese Science Bulletin 2013年第33期58卷 4077-4083页

作者： TANG GuiRong LU DaWei WANG dong LUO Li State key laboratory of plant molecular genetics Institute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChinese Academy of Sciences University of the chinese academy of sciences School of Life Science Anhui University

Rhizobia interact with host legumes to induce the formation of nitrogen-fixing nodules,which is very important in agriculture and *** development of nitrogen-fixing nodules is stringently regulated by host plants and rhizobial *** our previous work,a new Sinorhizobium meliloti LysR regulator gene(lsrB)was identified to be essential for alfalfa ***,how this gene is involved in alfalfa nodulation was not yet ***,we found that this gene was associated with prevention of premature nodule senescence and abortive bacteroid *** deficient alfalfa root nodules were induced by the in-frame deletion mutant of lsrB(lsrB1-2),which was similar to the plasmid-insertion mutant,*** senescence zones earlier appeared in these nodules where bacteroid differentiation was blocked at different stages from microscopy ***,oxidative bursts were observed in these nodules by DAB *** decreased expression of lipopolysaccharide core genes(lpsCDE)was correspondingly determined in these *** lipopolysaccharide is required for suppression of oxidative bursts or host cell *** findings demonstrate that the *** lsrB gene is involved in alfalfa root nodule development and bacteroid differentiation by suppressing oxidative bursts or defense responses in host cells.

关键词：苜蓿根瘤菌固氮根瘤分化抑制类菌体发育缺失突变体调节基因宿主细胞

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Cryo–EM structure of the CRY2 and CIB1 fragment complex provides insights into CIB1-mediated photosignaling

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plant Communications 2023年第2期4卷 4-7页

作者： Yahui Hao Xue zhang Yaqi Liu Miaolian Ma Xiaowei Huang Hongtao Liu peng zhang national key laboratory of plant molecular genetics Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghaiChina University of chinese academy of sciences BeijingChina

Dear Editor,Cryptochromes(CRYs)are blue-light photoreceptors that mediate various light responses in plants(Wang and Lin,2020;Wang et al.,2021).Two CRYs have been identified in Arabidopsis thaliana(At),AtCRY1 and AtCRY2,which mediate hypocotyl elongation and floral initiation(Ahmad and Cashmore,1993;Guo et al.,1998).CRYs are comprised of a conserved N-terminal photolyase-related(PHR)domain for chromophore FAD binding and a C-terminal domain(CCE)of variable length,and different plant CRYs have been found to exert overlapping biological functions(Lin et al.,1998;Rosenfeldt et al.,2008).

关键词： CRY1 CRY2 structure

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