In:
Journal of Integrative Plant Biology, Wiley, Vol. 56, No. 12 ( 2014-12), p. 1179-1192
Abstract:
Somatic embryogenesis receptor kinase (SERK) proteins play pivotal roles in regulation of plant development and immunity. The rice genome contains two SERK genes, OsSerk1 and OsSerk2 . We previously demonstrated that OsSerk2 is required for rice Xa21 ‐mediated resistance to Xanthomonas oryzae pv. oryzae ( Xoo ) and for normal development. Here we report the molecular characterization of OsSerk1 . Overexpression of OsSerk1 results in a semi‐dwarf phenotype whereas silencing of OsSerk1 results in a reduced angle of the lamina joint. OsSerk1 is not required for rice resistance to Xoo or Magnaporthe oryzae . Overexpression of OsSerk1 in OsSerk2 ‐silenced lines complements phenotypes associated with brassinosteroid (BR) signaling defects, but not the disease resistance phenotype mediated by Xa21 . In yeast, OsSERK1 interacts with itself forming homodimers, and also interacts with the kinase domains of OsSERK2 and BRI1, respectively. OsSERK1 is a functional protein kinase capable of auto‐phosphorylation in vitro . We conclude that, whereas OsSERK2 regulates both rice development and immunity, OsSERK1 functions in rice development but not immunity to Xoo and M. oryzae .
Type of Medium:
Online Resource
ISSN:
1672-9072
,
1744-7909
Language:
English
Publisher:
Wiley
Publication Date:
2014
detail.hit.zdb_id:
2130095-1
SSG:
12
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