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TRAF proteins as key regulators of plant development and stress responses

Journal of Integrative plant Biology 2022年第2期64卷 431-448页

作者： Hua Qi Fan-Nv Xia Shi Xiao Juan Li State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources College of Plant ProtectionSouth China Agricultural UniversityGuangzhou510642 China Guangdong Laboratory for Lingnan Modern Agriculture Guangzhou510642 China State Key Laboratory of Biocontrol Guangdong Provincial Key Laboratory of Plant ResourcesSchool of Life SciencesSun Yat-sen UniversityGuangzhou510275 China College of Agronomy Hunan Agricultural UniversityChangsha410128 China

Tumor necrosis factor receptor-associated factor(TRAF)proteins are conserved in higher eukaryotes and play key roles in transducing cellular signals across different *** are characterized by their C-terminal region(TRAF-C domain)containing seven to eight antiparallelβ-sheets,also known as the meprin and TRAF-C homology(MATH)*** the past few decades,significant progress has been made toward understanding the diverse roles of TRAF proteins in mammals and *** to other eukaryotic species,the Arabidopsis thaliana and rice(Oryza sativa)genomes encode many more TRAF/MATH domaincontaining proteins;these plant proteins cluster into five classes:TRAF/MATH-only,MATH-BPM,MATH-UBP(ubiquitin protease),Seven in absentia(SINA),and MATH-Filament and MATHPEARLI-4 proteins,suggesting parallel evolution of TRAF proteins in *** evidence now indicates that plant TRAF proteins form central signaling networks essential for multiple biological processes,such as vegetative and reproductive development,autophagosome formation,plant immunity,symbiosis,phytohormone signaling,and abiotic stress ***,we summarize recent advances and highlight future prospects for understanding on the molecular mechanisms by which TRAF proteins act in plant development and stress responses.

关键词： autophagy E3 ubiquitin ligase hormone signaling plant development plant stress responses protein adaptor TRAF family proteins

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Diverse Roles of Strigolactones in plant development

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Molecular plant 2013年第1期6卷 18-28页

作者： Philip B. Brewer Hinanit Koltai Christine A. Beveridget The University of Queensland School of Biological Sciences St Lucia Queensland 4072 Australia Institute of plant Sciences Agricultural Research Organization The Volcani Center PO Box 6 Bet Dagan 50250 Israel

With the discovery of strigolactones as root exudate signals that trigger parasitic weed seed germination, and then as a branching inhibitor and plant hormone, the next phase of strigolactone research has quickly revealed this hormone class as a major player in optimizing plant growth and development. From the early stages of plant evolution, it seems that strigolactones were involved in enabling plants to modify growth in order to gain advantage in competi- tion with neighboring organisms for limited resources. For example, a moss plant can alter its growth in response to strigolactones emanating from a neighbor. Within a higher plant, strigolactones appear to be involved in controlling the balance of resource distribution via strategic modification of growth and development. Most notably, higher plants that encounter phosphate deficiency increase strigolactone production, which changes root growth and promotes fungal symbiosis to enhance phosphate intake. The shoot also changes by channeling resources away from unessential leaves and branches and into the main stem and root system. This hormonal response is a key adaption that radically alters whole-plant architecture in order to optimize growth and development under diverse environmental conditions.

关键词： strigolactone branching root secondary growth germination symbiosis light nutrient evolution.

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Histone modifications and their regulatory roles in plant development and environmental memory

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Journal of Genetics and Genomics 2019年第10期46卷 467-476页

作者： Ting Zhao Zhenping Zhan Danhua Jiang State Key Laboratory of plant Genomics Institute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing100101China University of Chinese Academy of Sciences Beijing100101China

plants grow in dynamic environments where they receive diverse environmental *** and precise control of gene expression is essential for plants to align their development and metabolism with fluctuating *** on histones serve as histone code" to specify chromatin and gene *** modifications execute distinct functions on the chromatin,promoting either active transcription or gene *** writers,erasers,and readers mediate the regulation of histone modifications by catalyzing,removing,and recognizing modifications,*** evidence indicates the important function of histone modifications in plant development and environmental *** modifications also serve as environmental memory for plants to adapt to environmental *** we review recent progress on the regulation of histone modifications in plants,the impact of histone modifications on environment-controlled developmental transitions including germination and flowering,and the role of histone modifications in environmental memory.

关键词： Histone modification Transcription Germination Flowering plant-environmental response Environmental memory

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From signaling to function: how strigolactones regulate plant development

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Science China(Life Sciences) 2020年第11期63卷 1768-1770页

作者： Baoyuan Qu Yuan Qin Yang Bai State Key Laboratory of plant Genomics Institute of Genetics and Developmental BiologyInnovation Academy for Seed DesignChinese Academy of SciencesBeijing 100101China CAS center for Excellence in Biotic Interactions University of Chinese Academy of SciencesBeijing 100039China CAS-JIC Centre of Excellence for plant and Microbial Sciences Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China College of Advanced Agricultural Sciences University of Chinese Academy of SciencesBeijing 100039China

Strigolactones (SLs) are a class of plant hormones first discovered based on their ability to stimulate germination of the root parasite witchweed (Striga lutea Lour.) and regulate symbiosis between arbuscular mycorrhiza fungi and their host plants. Recent studies have identified diverse functions of SLs in shoot branching, leaf development, root architecture, and the responses to environment stress (GomezRoldan et al., 2008;Umehara et al., 2008;Brewer et al.,2013).

关键词： plant branching function

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Interactions between HLH and bHLH Factors Modulate Light-Regulated plant development

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Molecular plant 2012年第3期5卷 688-697页

作者： Yaqi Hao Eunkyoo Oh GUtsu Choi Zongsuo Liang Zhi-Yong Wang College of Life Science Northwest A＆F University Yangling Shaanxi 712100 China Department of plant Biology Carnegie Institution of Washington Stanford CA 94305 USA Department of Biological Sciences KAIST Daejeon 305-701 Korea

Phytochromes （Phy） and phytochrome-interacting factor （PIF） transcription factors constitute a major signal- ing module that controls plant development in response to red and far-red light. A low red：far-red ratio is interpreted as shading by neighbor plants and induces cell elongation--a phenomenon called shade-avoidance syndrome （SAS）. PAR1 and its closest homolog PAR2 are negative regulators of SAS; they belong to the HLH transcription factor family that lacks a typical basic domain required for DNA binding, and they are believed to regulate gene expressions through DNA binding transcription factors that are yet to be identified. Here, we show that light signal stabilizes PAR1 protein and PAR1 interacts with PIF4 and inhibits PIF4-mediated gene activation. DNA pull-down and chromatin immunoprecipitation （CHIP） assays showed that PAR1 inhibits PIF4 DNA binding in vitro and in vivo. Transgenic plants overexpressing PAR1 （PARIOX） are insensitive to gibberellin （GA） or high temperature in hypocotyl elongation, similarly to the pifq mutant. In addition to PIF4, PAR1 also interacts with PRE1, a HLH transcription factor activated by brassinosteroid （BR） and GA. Overexpression of PRE1 largely suppressed the dwarf phenotype of PARIOX. These results indicate that PAR1-PRE1 and PAR1-PIF4 het- erodimers form a complex HLH/bHLH network regulating cell elongation and plant development in response to light and hormones.

关键词： PAR1 PIF4 PRE1 bHLH DNA binding

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Big Roles of Small Kinases:The Complex Functions of Receptor-Like Cytoplasmic Kinases in plant Immunity and development

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Journal of Integrative plant Biology 2013年第12期55卷 1188-1197页

作者： Wenwei Lin Xiyu Ma Libo Shan Ping He Department of plant Pathology and Microbiology and Institute for Plant Genomics and BiotechnologyTexas A&M UniversityCollege Station Department of Biochemistry and Biophysics and Institute for Plant Genomics and BiotechnologyTexas A&M UniversityCollege Station

plants have evolved a large number of receptor-like cytoplasmic kinases （RLCKs） that often functionally and physically associate with receptor-like kinases （RLKs） to modulate plant growth, development and immune responses. Without any apparent extracellular domain, RLCKs relay intracellular signaling often via RLK complex-mediated transphosphorylation events. Recent advances have suggested essential roles of diverse RLCKs in concert with RLKs in regulating various cellular and physiological responses. We summarize here the complex roles of RLCKs in mediating plant immune responses and growth regulation, and discuss specific and overlapping functions of RLCKs in transducing diverse signaling pathways.

关键词： Phosphorylation plant development plant immunity receptor-like cytoplasmic kinases.

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Rice SUPPRESSOR OF GENE SILENCING 3a(SGS3a) acts in plant development and thermotolerance

Rice SUPPRESSOR OF GENE SILENCING 3a(SGS3a) acts in plant de...

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2018全国植物生物学大会

作者： Lili Feng Junzhong Liu Xueting Gu Zuhua He National Key Laboratory of plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology & EcologyChinese Academy of Sciences University of the Chinese Academy of Sciences School of Life Science and Technology ShanghaiTech University

Global warming has greatly affected plant growth and development,and poses a serious threat to the crop ***,our knowledge of how rice sense and respond to high temperatures is rather *** we report that OsSUPPRESSOR OF GENE SILENCING 3a(OsSGS3a),the rice(Oryza sativa L.) homolog of Arabidopsis SGS3,similar to OsRNA-dependent RNA polymerase 6(OsRDR6) and OsDicer-like 4(OsDCL4),acts in the biogenesis of trans-acting siRNAs(tasiRNAs) and phased small

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Roles of miR319-regulated TCPs in plant development and response to abiotic stress

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The Crop Journal 2021年第1期9卷 17-28页

作者： Yujie Fang Yuqian Zheng Wei Lu Jian Li Yujing Duan Shuai Zhang Youping Wang Key Laboratory of plant Functional Genomics of the Ministry of Education Jiangsu Key Laboratory of Crop Genomics and Molecular BreedingYangzhou UniversityYangzhou 225009JiangsuChina Joint International Research Laboratory of Agriculture and Agri-Product Safety the Ministry of Education of ChinaYangzhou UniversityYangzhou 225009JiangsuChina

Elaborate regulation of gene expression is required for plants to maintain normal growth,development,and ***(miRNAs)and transcription factors are key players that control gene expression in plant regulatory *** TEOSINTE BRANCHED1/CYCLOIDEA/PROLIFERATING CELL FACTOR(TCP)family comprises plantspecific transcription factors that contain a conserved TCP domain of 59 amino *** members of this family are targeted by miR319,one of the most ancient and evolutionarily conserved miRNAs in *** evidence has revealed that miR319-regulated TCP(MRTCP)genes participate extensively in plant development and responses to environmental *** this review,the structural characteristics and classifications of TCP transcription factors and the regulatory relationships between TCP transcription factors and miRNAs are *** knowledge of the regulatory functions of MRTCP genes in multiple biological pathways including leaf development,vascular formation,flowering,hormone signaling,and response to environmental stresses such as cold,salt,and drought is *** review will be beneficial for understanding the roles of the MRTCP-mediated regulatory network and its molecular mechanisms in plant development and stress response,and provides a theoretical basis for plant genetic improvement.

关键词： TCP miR319 Regulation Growth and development Abiotic stress

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Mitogen-activated protein kinase cascade MKK7-MPK6 plays important roles in plant development and regulates shoot branching by phosphorylating PIN1 in Arabidopsis

Mitogen-activated protein kinase cascade MKK7-MPK6 plays imp...

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2016年全国植物生物学大会

作者： Weiyan Jia Baohua Li Shujia Li Yan Liang Xiaowei Wu Mei Ma Jiyao Wang Yueyue Cai Yuanya Zhang Yingchun Wang Jiayang Li Yonghong Wang State Key Laboratory of plant Genomics and National Center for plant Gene Research (Beijing) CAS Center for Excellence in Molecular Plant SciencesInstitute of Genetics and Developmental BiologyChinese Academy of Sciences Department of Human Oncology University of WisconsinSchool of Medicine and Public Health Department of plant Sciences University of California State Key Laboratory of Molecular developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of Sciences

Emerging evidences exhibit that mitogen-activated protein kinase(MAPK) signaling pathways are connected with many aspects of plant development. The complexity of MAPK cascades raises challenges not only to identify the MAPK module in planta but also to define the specific role of an individual module. Our previous study have characterized an Arabidopsis bushy and dwarf1(bud1) mutant,in which the MKK7 was constitutively activated,resulting in multiple phenotypic alterations and activated the mobile signal of systemic acquired resistance. To elucidate the specificity of MKK7 and its downstream MAPKs in multiple biological processes,we systemically screened the downstream substrates of MKK7 in vitro. We found that MPK3 and MPK6 are the substrates for phosphorylation by MKK7 in planta. Genetic analysis showed that MKK7-MPK6 cascade is specifically responsible for the regulation of shoot branching,hypocotyl gravitropism,filament elongation,and lateral root formation. We further demonstrated that the MKK7-MPK6 cascade controls shoot branching by phosphorylating Ser 337 on PIN1,which affects the basal localization of PIN1 in xylem parenchyma cells and polar auxin transport in the primary stem. Our findings specify the functions of the MKK7-MPK6 cascade,and explain how MKK7-MPK6 signaling pathway regulates polar auxin transport(PAT) through the specific substrate PIN1 to determine shoot branching in Arabidopsis,establishing a molecular link between the MAPK cascade and auxin-regulated plant development.

关键词： MKK7 MPK6 phosphorylation PIN1 shoot branching

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Targeted Gene Knockouts Reveal Overlapping Functions of the Five Physcomitrella patens FtsZ Isoforms in Chloroplast Division, Chloroplast Shaping, Cell Patterning, plant development, and Gravity Sensing

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Molecular plant 2009年第6期2卷 1359-1372页

作者： Anja Martin Daniel Lang Sebastian T. Hanke Stefanie J.X. Mueller Eric Sarnighausen Marco Vervliet-Scheebaum Ralf Reski plant Biotechnology Faculty of Biology University of Freiburg Schaenzlestr. 1 79104 Freiburg Germany Centre for Biological Signalling Studies (bioss) University of Freiburg Alberststr. 19 79104 Freiburg Germany Spemann Graduate School of Biology and Medicine (SGBM) University of Freiburg Alberststr. 19A 79104 Freiburg Germany

Chloroplasts and bacterial cells divide by binary fission. The key protein in this constriction division is FtsZ, a self-assembling GTPase similar to eukaryotic tubulin. In prokaryotes, FtsZ is almost always encoded by a single gene, whereas plants harbor several nuclear-encoded FtsZ homologs. In seed plants, these proteins group in two families and all are exclusively imported into plastids. In contrast, the basal land plant Physcomitrella patens, a moss, encodes a third FtsZ family with one member. This protein is dually targeted to the plastids and to the cytosol. Here, we report on the targeted gene disruption of all ftsZ genes in R patens. Subsequent analysis of single and double knockout mutants revealed a complex interaction of the different FtsZ isoforms not only in plastid division, but also in chloroplast shaping, cell patterning, plant development, and gravity sensing. These results support the concept of a plastoskeleton and its functional integration into the cytoskeleton, at least in the moss R patens.

关键词： Bryophyte cell wall gravitropism GTPase chloroplast plastoskeleton P patens moss.

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