Involvement of RD20, a member of caleosin family, in ABA-mediated regulation of germination in Arabidopsis thaliana

被引：16

作者：

Aubert, Yann ^{[1
]}

Leba, Louis-Jerome ^{[1
]}

Cheval, Cecilia ^{[1
]}

Ranty, Benoit ^{[1
]}

Vavasseur, Alain ^{[2
]}

Aldon, Didier ^{[1
]}

Galaud, Jean-Philippe ^{[1
]}

机构：

[1] Univ Toulouse, Lab Surfaces Cellulaires & Signalisat Chez Vegeta, UMR 5546, CNRS, Castanet Tolosan, France

[2] Univ Aix Marseille II, Lab Echanges Membranaires & Signalisat, Commissariat Energie Atom Cadarache, UMR 6191,CNRS,CEA, Bat 156, St Paul Les Durance, France

来源：

PLANT SIGNALING & BEHAVIOR | 2011年 / 6卷 / 04期

关键词：

ABA; Arabidopsis thaliana; biotic stress; caleosin; germination; RD20;

D O I：

10.4161/psb.6.4.14836

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The RD20 gene encodes a member of the caleosin family, which is primarily known to function in the mobilization of seed storage lipids during germination. In contrast to other caleosins, RD20 expression is early-induced by water deficit conditions and we recently provided genetic evidence for its positive role in drought tolerance in Arabidopsis. RD20 is also responsive to pathogen infection and is constitutively expressed in diverse tissues and organs during development suggesting additional roles for this caleosin. This addendum describes further exploration of phenotypic alterations in T-DNA insertional rd20 mutant and knock-out complemented transgenic plants in the context of early development and susceptibility to a phytopathogenic bacteria. We show that the RD20 gene is involved in ABA-mediated inhibition of germination and does not play a significant role in plant defense against Pseudomonas syringae.

引用

页码：538 / 540

页数：3

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