Nematode-Encoded RALF Peptide Mimics Facilitate Parasitism of Plants through the FERONIA Receptor Kinase
文献类型: 外文期刊
作者: Zhang, Xin 1 ; Peng, Huan 2 ; Zhu, Sirui 1 ; Xing, Junjie 3 ; Li, Xin 1 ; Zhu, Zhaozhong 1 ; Zheng, Jingyuan 4 ; Wang, Lo 1 ;
作者机构: 1.Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Coll Biol, Hunan Key Lab Plant Funct Genom & Dev Regulat, Changsha 410082, Peoples R China
2.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Plant Dis & Insect Pest, Beijing 100193, Peoples R China
3.Hunan Hybrid Rice Res Ctr, State Key Lab Hybrid Rice, Changsha 410125, Peoples R China
4.Hunan Acad Agr Sci, Inst Vegetable Res, Changsha 410125, Peoples R China
5.Guangxi Univ, Coll Life Sci & Technol, State Key Lab Conservat & Utilizat Subtrop Agrobi, Nanning 530004, Peoples R China
6.Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94720 USA
关键词: RALF; FERONIA; root-knot nematodes; Arabidopsis thaliana; disulfide bonds
期刊名称:MOLECULAR PLANT ( 影响因子:13.164; 五年影响因子:16.357 )
ISSN: 1674-2052
年卷期: 2020 年 13 卷 10 期
页码:
收录情况: SCI
摘要: The molecular mechanism by which plants defend against plant root-knot nematodes (RKNs) is largely unknown. The plant receptor kinase FERONIA and its peptide ligands, rapid alkalinization factors (RALFs), regulate plant immune responses and cell expansion, which are two important factors for successful RKN parasitism. In this study, we found that mutation of FERONIA in Arabidopsis thaliana resulted in plants showing low susceptibility to the RKN Meloidogyne incognita. To identify the underlying mechanisms associated with this phenomenon, we identified 18 novel RALF-likes from multiple species of RKNs and showed that two RALF-likes (i.e., MiRALF1 and MiRALF3) from M. incognita were expressed in the esophageal gland with high expression during the parasitic stages of nematode development. These nematode RALF-likes also possess the typical activities of plant RALFs and can directly bind to the extracellular domain of FERONIA to modulate specific steps of nematode parasitism-related immune responses and cell expansion. Genetically, both MiRALF1/3 and FERONIA are required for RKN parasitism in Arabidopsis and rice. Collectively, our study suggests that nematode-encoded RALFs facilitate parasitism via plant-encoded FERONIA and provides a novel paradigm for studying host-pathogen interactions.
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