SrSymRK, a Plant Receptor Essential for Symbiosome Formation

Overview

Journal Proc Natl Acad Sci U S A

Specialty Science

Date 2005 Jul 12

PMID 16006516

Citations 37

Authors

Ward Capoen

Sofie Goormachtig

Riet De Rycke

Katrien Schroeyers

Marcelle Holsters

Affiliations

Soon will be listed here.

Abstract

The symbiosis between legumes and rhizobia is essential for the nitrogen input into the life cycle on our planet. New root organs, the nodules, are established, which house N2-fixing bacteria internalized into the host cell cytoplasm as horizontally acquired organelles, the symbiosomes. The interaction is initiated by bacterial invasion via epidermal root hair curling and cell division in the cortex, both triggered by bacterial nodulation factors. Of the several genes involved in nodule initiation that have been identified, one encodes the leucine-rich repeat-type receptor kinase SymRK. In SymRK mutants of Lotus japonicus or its orthologs in Medicago sp. and Pisum sativum, nodule initiation is arrested at the level of the root hair interaction. Because of the epidermal block, the role of SymRK at later stages of nodule development remained enigmatic. To analyze the role of SymRK downstream of the epidermis, the water-tolerant legume Sesbania rostrata was used that has developed a nodulation strategy to circumvent root hair responses for bacterial invasion. Evidence is provided that SymRK plays an essential role during endosymbiotic uptake in plant cells.

Citing Articles

A rare non-canonical splice site in Trema orientalis SYMRK does not affect its dual symbiotic functioning in endomycorrhiza and rhizobium nodulation.

Alhusayni S, Roswanjaya Y, Rutten L, Huisman R, Bertram S, Sharma T BMC Plant Biol. 2023; 23(1):587.

PMID: 37996841 PMC: 10668435. DOI: 10.1186/s12870-023-04594-0.

Rhizobia induce SYMRK endocytosis in Phaseolus vulgaris root hair cells.

Davila-Delgado R, Flores-Canul K, Juarez-Verdayes M, Sanchez-Lopez R Planta. 2023; 257(4):83.

PMID: 36928335 PMC: 10020325. DOI: 10.1007/s00425-023-04116-0.

Role of Nod factor receptors and its allies involved in nitrogen fixation.

Singh J, Verma P Planta. 2023; 257(3):54.

PMID: 36780015 DOI: 10.1007/s00425-023-04090-7.

Molecular Mechanisms of Intercellular Rhizobial Infection: Novel Findings of an Ancient Process.

Quilbe J, Montiel J, Arrighi J, Stougaard J Front Plant Sci. 2022; 13:922982.

PMID: 35812902 PMC: 9260380. DOI: 10.3389/fpls.2022.922982.

Distinct signaling routes mediate intercellular and intracellular rhizobial infection in Lotus japonicus.

Montiel J, Reid D, Gronbaek T, Benfeldt C, James E, Ott T Plant Physiol. 2021; 185(3):1131-1147.

PMID: 33793909 PMC: 8133683. DOI: 10.1093/plphys/kiaa049.

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