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PEP7 acts as a peptide ligand for the receptor kinase SIRK1 to regulate aquaporin-mediated water influx and lateral root growth

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Molecular Plant 2022年第10期15卷 1615-1631页

作者： Jiahui Wang Lin Xi Xu Na Wu Stefanie Konig Leander Rohr Theresia Neumann Jan Weber Klaus Harter Waltraud X.Schulze Department of Plant Systems Biology University of Hohenheim70593 StuttgartGermany School of Life Science Center for Life SciencesYunnan University650091 KunmingPeople's Republic of China Center for Plant Molecular Biology University of Tubingen72076 TubingenGermany

Plant receptors constitute a large protein family that regulates various aspects of development and responses to external *** characterization of this protein family and the identification of their ligands remain major challenges in plant ***,we identified plasma membrane-intrinsic sucrose-induced receptor kinase 1(SIRK1)and Qian Shou kinase 1(QSK1)as receptor/co-receptor pair involved in the regulation of aquaporins in response to osmotic conditions induced by *** this study,we identified a member of the elicitor peptide(PEP)family,namely PEP7,as the specific ligand of th receptor kinase ***7 binds to the extracellular domain of SIRK1 with a binding constant of 1.44±0.79μM and is secreted to the apoplasm specifically in response to sucrose *** of a signaling complex involving SIRK1,QSK1,and aquaporins as substrates is mediated by alterations in the external sucrose concentration or by PEP7 ***,the presence of PEP7 induces the phosphorylation of aquaporins in vivo and enhances water influx into *** water influx,in turn,led to delayed lateral root development in the pep7 *** loss-of-function mutant of SIRK1 is not responsive to external PEP7 treatment regarding kinase activity,aquaporin phosphorylation,water influx activity,and lateral root *** together,our data indicate that the PEP7/SIRK1/QSK1 complex represents a crucial perception and response module that mediates sucrose-controlled water flux in plants and lateral root development.

关键词： receptor kinase peptide signaling receptor-ligand pair sugar signaling regulation of water influx

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BAK-up:the receptor kinase BAK-TO-LIFE 2 enhances immunity when BAK1 is lacking

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Stress Biology 2023年第1期3卷 463-467页

作者： Vahid Fallahzadeh-Mamaghami Hannah Weber Birgit Kemmerling ZMBP University TubingenAuf der Morgenstelle 32Tübingen 72076Germany

BRI1-ASSOCIATED kinase 1(BAK1/SERK3)and its closest homolog BAK1-LIKE 1(BKK1/SERK4)are leucine-rich repeat receptor kinases(LRR-RKs)belonging to the SOMATIC EMBRYOGENESIS receptor kinase(SERK)*** act as co-receptors of various other LRR-RKs and participate in multiple signaling events by complexing and transphosphorylating ligand-binding *** identified as the brassinosteroid receptor BRASSINOSTEROID INSENSITIVE 1(BRI1)co-receptor,BAK1 also functions in plant immunity by interacting with pattern recognition *** in BAK1 and BKK1 cause severely stunted growth and cell death,characterized as autoimmune cell *** factors play a role in this type of cell death,including RKs and components of effector-triggered immunity(ETI)signaling pathways,glycosylation factors,ER quality control components,nuclear trafficking components,ion channels,and Nod-like receptors(NLRs).The Shan lab has recently discovered a novel RK BAK-TO-LIFE 2(BTL2)that interacts with BAK1 and triggers cell death in the absence of BAK1 and *** RK compensates for the loss of BAK1-mediated pattern-triggered immunity(PTI)by activating phytocytokine-mediated immune and cell death responses.

关键词： BAK1 Cell death receptor kinase BTL2 PTI ETI

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Molecular mechanisms and phosphorylation of receptor kinase in early Brassinosteroids signal transduction

Molecular mechanisms and phosphorylation of receptor kinase ...

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从植物科学到农业发展——2012全国植物生物学大会

作者： Man-Ho Oh Kevin Blackburn Michael B Goshe Steven C Huber Steven D Clouse USDA/ARS University of IllinoisUrbanaIL 61801USA Department of Molecular and Structural Biochemistry North Carolina State UniversityRaleighNC 27695USA Department of Horticultural Science North Carolina State UniversityRaleighNC 27695USA

Brassinosteroids(BRs) regulate multiple aspects of plant growth and development and require an active BRASSINOSTEROID INSENSITIVE 1(BRI1)and BRIl-ASSOCIATED receptor kinase 1(BAKl) for hormone perception and signal *** immunoprecipitation of epitope-tagged BRIl and BAKl from Arabidopsis plants followed by liquid chromatography-tandem mass spectrometry (LC/MS/MS),we have identified multiple in vivo phosphorylation sites(Ser/Thr/Tyr) on BRIl and *** of the in planta function of these sites by site-directed mutational analysis has revealed many of these sites are not only critical for the kinases function and optimal BR signaling,but also having specificity for *** examined the association and phosphorylation of BRI1 and BAKl in multiple genetic backgrounds to elucidate the detailed mechanisms of phosphorylation and dimerization in response to BR. a sequential transphosphorylation model established in this study should enrich our knowledge of early events in BR signal transduction as well as found general modes of action for the large family of plant receptor-like kinases.

关键词： Brassinosteroid receptor kinase Phosphorylation Signal transduction BRI1 BAK1

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How many proteins interacting with symbiosis receptor-like kinase （SymRK） involved in nodulation？

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Oil Crop Science 2016年第4期1卷 49-57页

作者： Songli Yuan Rong Li Zhongming Zhang Xinan Zhou Key Laboratory of Biology and Genetic Improvement of Oil Crops Ministry of Agriculture Oil Crops Research Institute Chinese Academy of Agricultural Sciences Wuhan China State Key Laboratory of Agricultural Microbiology Huazhong Agricultural University Wuhan China

Nodule formation is a tightly regulated process that integrates specific signal exchange and coordinated activation of developmental mechanisms to synchronize bacte-rial infection and organ development. Symbiosis receptor kinase （SymRK） is indispensable for symbiotic signal transduction of root nodule symbiosis （RNS） upon stimulation of root cells by microbial signaling molecules. But the protein turnover model of SymRK and the way for nodulation factor signals downstream transduction from SymRK are not clear. Over the past years, a number of proteins interacting with SymRK which required for root nodule symbiosis have been identified. Here we summarized structures and functions of these pro-teins, and concluded that major challenge would be revealing relations between them and the regulation mechanisms of SymRK in nodulation.

关键词： legume root nodule symbiosis nodulation receptor kinase interacting protein

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A receptor-Like Cytoplasmic kinase Mediates Signaling from Plant Immune receptor FLS2

A Receptor-Like Cytoplasmic Kinase Mediates Signaling from P...

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中国遗传学会植物遗传和基因组学专业委员会2009年学术研讨会

作者： Jie Zhang,Wei Li,Tingting Xiang,Yan Zou,Minghui Gao,Yuelin Zhang,and Jian-Min Zhou~* National Institute of Biological Sciences,No.7 Science Park Road,Zhongguancun Life Science Park, Beijing 102206

The Arabidopsis surface-localized immune receptor FLS2 detects the bacterial flagellar peptide flg22 to initiate defenses through a poorly understood signal transduction pathway. Here we show that Arabidopsis BIK1,a r... 详细信息

关键词： Arabidopsis immunity receptor kinase bacterial effector.

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A receptor-Like Cytoplasmic kinase Mediates Signaling from Plant Immune receptor FLS2

A Receptor-Like Cytoplasmic Kinase Mediates Signaling from P...

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中国植物生理学会第十次会员代表大会暨全国学术年会

作者： Jie Zhang, Wei Li, Tingting Xiang, Yan Zou, Minghui Gao, Yuelin Zhang, Jian-Min Zhou* 1National Institute of Biological Sciences, Beijing 102206, China

＜正＞The Arabidopsis surface-localized immune receptor FLS2 detects the bacterial flagellar peptide flg22 to initiate defenses through a poorly understood signal transduction pathway[1,2]. Upon binding to the bacteri... 详细信息

关键词： Arabidopsis immunity receptor kinase bacterial effector.

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Plant pattern-recognition receptors controlling innate immunity

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Science China(Life Sciences) 2016年第9期59卷 878-888页

作者： Lei Li Yufei Yu Zhaoyang Zhou Jian-Min Zhou State Key Laboratory of Plant Genomics Institute of Genetics and Developmental Biology Chinese Academy of Sciences

Plants are exposed to numerous potential pathogenic microbes. To counter the threat, plants have evolved diverse patternrecognition receptors(PRRs), which are receptor kinases(RKs) and receptor proteins(RPs) specialized to detect conserved pathogen/microbe-associated molecular patterns(PAMPs/MAMPs). Although only a handful of RKs and RPs are known PRRs,they belong to the receptor-like kinase(RLK) and receptor-like protein(RLP) superfamilies that undergo lineage-specific expansion, suggesting that many of these RLKs and RLPs are potential PRRs. Analyses of existing PRRs have uncovered ligand-induced RLK-RK or RLK-RP oligomerization as a common mechanism for immune activation. PRRs can recruit additional components to form dynamic receptor complexes, which mediate specific cellular responses. Detailed analyses of these components are shedding light on molecular mechanisms underlying the regulation of PRR activity and downstream signaling.

关键词： receptor kinase receptor protein receptor-like cytoplasmic kinase plant innate immunity

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The brassinosteroid signal transduction pathway

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Cell Research 2006年第5期16卷 427-434页

作者： Zhi-Yong Wang~(1,2) Qiaomei Wang~3 Kang Chong~2 Fengru Wang~2 Lei Wang~2 Mingyi Bai~2 Chengguo Jia~3 ~1Department of Plant Biology,Carnegie Institution,Stanford,CA 94305,USA ~2Key Laboratory of Photosynthesis and Environmental Molecular Physiology,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China:~3Department of Horticulture,Zheijang University,Hangzhou 310029,China Department of Plant Biology Carnegie Institution Stanford CA 94305 USA. zywang24@stanford.edu

Steroids function as signaling molecules in both animals and *** animal steroid homlones are perceived bynuclear receptor family of transcription factors,brassinosteroids (BR) in plants are perceived by a cell surface receptorkinase,*** studies have demonstrated that BR binding to the extracellular domain ofBRl 1 induces kmase acti-vation and dimerization with another receptor kinase,BAK *** BRI 1 or BAK I then regulate,possibly indirectly,the activities of BIN2 kinase and/or BSU 1 phosphatase,which directly regulate the phosphorylation status and nuclearaccumulation of two homologous transcription factors,BZR1 and ***1 and BES1 directly bind to promoters ofBR responsive genes to regulate their *** BR signaling pathway has become a paradigm for both receptorkinase signaling in plants and steroid signaling by cell surface receptors in general.

关键词： Brassinosteroid receptor kinase LRR-RLK GSK3 signal transduction Arabidopsis

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Erratum to: Plant pattern-recognition receptors controlling innate immunity

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Science China Life Sciences 2016年第12期59卷 1350-1350页

作者： Lei Li Yufei Yu Zhaoyang Zhou Jian-Min Zhou State Key Laboratory of Plant Genomics Institute of Genetics and Developmental Biology Chinese Academy of Sciences

Plants are exposed to numerous potential pathogenic microbes. To counter the threat, plants have evolved diverse patternrecognition receptors(PRRs), which are receptor kinases(RKs) and receptor proteins(RPs) specialized to detect conserved pathogen/microbe-associated molecular patterns(PAMPs/MAMPs). Although only a handful of RKs and RPs are known PRRs, they belong to the receptor-like kinase(RLK) and receptor-like protein(RLP) superfamilies that undergo lineage- specific expansion, suggesting that many of these RLKs and RLPs are potential PRRs. Analyses of existing PRRs have uncovered ligand-induced RLK-RK or RLK-RP oligomerization as a common mechanism for immune activation. PRRs can recruit additional components to form dynamic receptor complexes, which mediate specific cellular responses. Detailed analyses of these components are shedding light on molecular mechanisms underlying the regulation of PRR activity and downstream signaling.

关键词： receptor kinase receptor protein receptor-like cytoplasmic kinase plant innate immunity

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