A novel simple extracellular leucine-rich repeat (eLRR) domain protein from rice (OsLRR1) enters the endosomal pathway and interacts with the hypersensitive-induced reaction protein 1 (OsHIR1)
文献类型: 外文期刊
第一作者: Zhou, Liang
作者: Zhou, Liang;Cheung, Ming-Yan;Zhang, Shi-Hong;Sun, Samuel Sai-Ming;Lam, Hon-Ming;Zhou, Liang;Cheung, Ming-Yan;Zhang, Shi-Hong;Sun, Samuel Sai-Ming;Lam, Hon-Ming;Zhang, Qi;Lei, Cai-Lin;Zhang, Shi-Hong
作者机构:
关键词: Amino Acid Sequence;Arabidopsis;Cloning;Molecular;Endosomes;Gene Expression Regulation;Plant;Immunity;Innate;Microscopy;Confocal;Microscopy;Electron;Molecular Sequence Data;Oryza sativa;Plant Diseases;Plant Proteins;Plants;Genetically Modified;Protein Interaction Mapping;Pseudomonas syringae;RNA;Plant;Sequence Alignment;Signal Transduction;Two-Hybrid System Techniques
期刊名称:PLANT CELL AND ENVIRONMENT ( 影响因子:7.228; 五年影响因子:7.791 )
ISSN:
年卷期:
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收录情况: SCI
摘要: Receptor-like protein kinases (RLKs) containing an extracellular leucine-rich repeat (eLRR) domain, a transmembrane domain and a cytoplasmic kinase domain play important roles in plant disease resistance. Simple eLRR domain proteins structurally resembling the extracellular portion of the RLKs may also participate in signalling transduction and plant defence response. Yet the molecular mechanisms and subcellular localization in regulating plant disease resistance of these simple eLRR domain proteins are still largely unclear. We provided the first experimental evidence to demonstrate the subcellular localization and trafficking of a novel simple eLRR domain protein (OsLRR1) in the endosomal pathway, using both confocal and electron microscopy. Yeast two-hybrid and in vitro pull-down assays show that OsLRR1 interacts with the rice hypersensitive-induced response protein 1 (OsHIR1) which is localized on plasma membrane. The interaction between LRR1 and HIR1 homologs was shown to be highly conserved among different plant species, suggesting a close functional relationship between the two proteins. The function of OsLRR1 in plant defence response was examined by gain-of-function tests using transgenic Arabidopsis thaliana. The protective effects of OsLRR1 against bacterial pathogen infection were shown by the alleviating of disease symptoms, lowering of pathogen titres and higher expression of defence marker genes.
分类号: Q948
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