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Plant Cell. 2005 Dec;17(12):3337-49. Epub 2005 Nov 11.

The Arabidopsis thaliana SOMATIC EMBRYOGENESIS RECEPTOR-LIKE KINASES1 and 2 control male sporogenesis.

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1
Laboratory of Biochemistry, Department of Agrotechnology and Food Sciences, Wageningen University and Research Centre, The Netherlands.

Abstract

The Arabidopsis thaliana SOMATIC EMBRYOGENESIS RECEPTOR-LIKE KINASE (SERK) family of plasma membrane receptors consists of five closely related members. The SERK1 and SERK2 genes show a complex expression pattern throughout development. Both are expressed in anther primordia up to the second parietal division. After this point, expression ceases in the sporocytes and is continued in the tapetum and middle layer precursors. Single knockout mutants of SERK1 and SERK2 show no obvious phenotypes. Double mutants of SERK1 and SERK2 are completely male sterile due to a failure in tapetum specification. Fertility can be restored by a single copy of either gene. The SERK1 and SERK2 proteins can form homodimers or heterodimers in vivo, suggesting they are interchangeable in the SERK1/SERK2 signaling complex.

PMID:
16284305
PMCID:
PMC1315373
DOI:
10.1105/tpc.105.036814
[Indexed for MEDLINE]
Free PMC Article
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