1O2-mediated retrograde signaling during late embryogenesis predetermines plastid differentiation in seedlings by recruiting abscisic acid

被引：53

作者：

Kim, Chanhong ^{[1
,3
]}

Lee, Keun Pyo ^{[1
]}

Baruah, Aiswarya ^{[1
,3
]}

Nater, Mena ^{[1
]}

Goebel, Cornelia ^{[2
]}

Feussner, Ivo ^{[2
]}

Apel, Klaus ^{[1
,3
]}

机构：

[1] ETH, Swiss Fed Inst Technol, Inst Plant Sci, CH-8092 Zurich, Switzerland

[2] Univ Gottingen, Albrecht von Haller Inst Plant Sci, D-37073 Gottingen, Germany

[3] Cornell Univ, Boyce Thompson Inst Plant Res, Ithaca, NY 14853 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2009年 / 106卷 / 24期

基金：

瑞士国家科学基金会;

关键词：

O-1(2) signaling; seed development; ARABIDOPSIS-THALIANA; SINGLET OXYGEN; STRESS RESPONSES; SEED DORMANCY; GERMINATION; MATURATION; EMBRYO;

D O I：

10.1073/pnas.0901315106

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Plastid development in seedlings of Arabidopsis thaliana is affected by the transfer of O-1(2)-mediated retrograde signals from the plastid to the nucleus and changes in nuclear gene expression during late embryogenesis. The potential impact of these mechanisms on plastid differentiation is maintained throughout seed dormancy and becomes effective only after seed germination. Inactivation of the 2 nuclear-encoded plastid proteins EXECUTER1 and EXECUTER2 blocks O-1(2)-mediated retrograde signaling before the onset of dormancy and impairs normal plastid formation in germinating seeds. This long-term effect of O-1(2) retrograde signaling depends on the recruitment of abscisic acid (ABA) during seedling development. Unexpectedly, ABA acts as a positive regulator of plastid formation in etiolated and light-grown seedlings.

引用

页码：9920 / 9924

页数：5