A novel secreted protein, NISP1, is phosphorylated by soybean Nodulation Receptor Kinase to promote nodule symbiosis
文献类型: 外文期刊
第一作者: Fu, Baolan
作者: Fu, Baolan;Xu, Zhipeng;Lei, Yutao;Dong, Ru;Wang, Yanan;Zhu, Hui;Cao, Yangrong;Guo, Xiaoli;Yan, Zhe
作者机构:
关键词: legume-rhizobia symbiosis; Nodulation Receptor Kinase; protein phosphorylation; root nodule symbiosis; soybean
期刊名称:JOURNAL OF INTEGRATIVE PLANT BIOLOGY ( 影响因子:11.4; 五年影响因子:10.1 )
ISSN: 1672-9072
年卷期: 2023 年 65 卷 5 期
页码:
收录情况: SCI
摘要: Nodulation Receptor Kinase (NORK) functions as a co-receptor of Nod factor receptors to mediate rhizobial symbiosis in legumes, but its direct phosphorylation substrates that positively mediate root nodulation remain to be fully identified. Here, we identified a GmNORK-Interacting Small Protein (GmNISP1) that functions as a phosphorylation target of GmNORK to promote soybean nodulation. GmNORK alpha directly interacted with and phosphorylated GmNISP1. Transcription of GmNISP1 was strongly induced after rhizobial infection in soybean roots and nodules. GmNISP1 encodes a peptide containing 90 amino acids with a "DY" consensus motif at its N-terminus. GmNISP1 protein was detected to be present in the apoplastic space. Phosphorylation of GmNISP1 by GmNORK alpha could enhance its secretion into the apoplast. Pretreatment with either purified GmNISP1 or phosphorylation-mimic GmNISP1(12D) on the roots could significantly increase nodule numbers compared with the treatment with phosphorylation-inactive GmNISP1(12A). The data suggested a model that soybean GmNORK phosphorylates GmNISP1 to promote its secretion into the apoplast, which might function as a potential peptide hormone to promote root nodulation.
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