The Receptor Kinase CORYNE ofArabidopsisTransmits the Stem Cell–Limiting Signal CLAVATA3 Independently of CLAVATA1 | Zendy

Ralf Müller-Xing | Zendy; Andrea Bleckmann | Zendy; Rüdiger Simon | Zendy

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The Receptor Kinase CORYNE ofArabidopsisTransmits the Stem Cell–Limiting Signal CLAVATA3 Independently of CLAVATA1

Author(s) -

Ralf Müller-Xing,

Andrea Bleckmann,

Rüdiger Simon

Publication year - 2008

Publication title -

the plant cell

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.324

H-Index - 341

eISSN - 1532-298X

pISSN - 1040-4651

DOI - 10.1105/tpc.107.057547

Subject(s) - biology , arabidopsis , meristem , microbiology and biotechnology , arabidopsis thaliana , receptor , signal transduction , transmembrane protein , stem cell , kinase , transmembrane domain , protein kinase domain , mutant , signal peptide , botany , shoot , genetics , gene , peptide sequence

Stem cells in shoot and floral meristems of Arabidopsis thaliana secrete the signaling peptide CLAVATA3 (CLV3) that restricts stem cell proliferation and promotes differentiation. The CLV3 signaling pathway is proposed to comprise the receptor kinase CLV1 and the receptor-like protein CLV2. We show here that the novel receptor kinase CORYNE (CRN) and CLV2 act together, and in parallel with CLV1, to perceive the CLV3 signal. Mutations in CRN cause stem cell proliferation, similar to clv1, clv2, and clv3 mutants. CRN has additional functions during plant development, including floral organ development, that are shared with CLV2. The CRN protein lacks a distinct extracellular domain, and we propose that CRN and CLV2 interact via their transmembrane domains to establish a functional receptor.

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