Atypical Receptor Kinase RINRK1 Required for Rhizobial Infection but not Nodule Development in Lotus japonicus.

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ID: 22696
2019
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Abstract
During the legume-rhizobium symbiotic interaction, rhizobial invasion of legumes is primarily mediated by a plant-made tubular invagination called an infection thread (IT). Here, we identify a gene in Lotus japonicus encoding a leucine-rich repeat receptor-like kinase (LRR-RLK), RINRK1 (Rhizobial Infection Receptor-like Kinase1), that is induced by Nod factors (NFs) and is involved in IT formation but not nodule organogenesis. A paralog, RINRK2, plays a relatively minor role in infection. RINRK1 is required for full induction of early infection genes, including Nodule Inception (NIN), encoding an essential nodulation transcription factor. RINRK1 displayed an infection-specific expression pattern, and NIN bound to the RINRK1 promoter, inducing its expression. RINRK1 was found to be an atypical kinase localized to the plasma membrane and did not require kinase activity for rhizobial infection. We propose RINRK1 is an infection-specific RLK, which may specifically coordinate output from NF signaling or perceive an unknown signal required for rhizobial infection.
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li2019atypicalplant Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Li, Xiaolin;Zheng, Zhiqiong;Kong, Xiangxiao;Xu, Ji;Qiu, Liping;Sun, Jongho;Reid, Dugald Elgin;Jin, Haojie;Andersen, Stig U;Oldroyd, Giles E D;Stougaard, Jens;Downie, J Allan;Xie, Fang;
Journal Plant physiology
Year 2019
DOI
pp.00509.2019
URL
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