Mitogen-activated protein kinase signaling in postgermination arrest of development by abscisic acid

被引：153

作者：

Lu, C

Han, MH

Guevara-Garcia, A

Fedoroff, NV ^{[1
]}

机构：

[1] Penn State Univ, Dept Biol, University Pk, PA 16802 USA

[2] Penn State Univ, Life Sci Consortium, University Pk, PA 16802 USA

[3] Delaware Biotechnol Inst, Newark, DE 19711 USA

[4] Penn State Univ, Dept Biochem & Mol Biol, University Pk, PA 16802 USA

[5] Univ Nacl Autonoma Mexico, Inst Biotecnol, Cuernavaca 62271, Morelos, Mexico

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2002年 / 99卷 / 24期

关键词：

D O I：

10.1073/pnas.242607499

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：

Abscisic acid (ABA) mediates plant responses to environmental stress, particularly to water status. During germination, the embryo emerges from dormancy as the ABA concentration declines. Exposure to exogenous ABA during germination arrests development rapidly, but reversibly, enabling seedlings to withstand early water stress without loss of viability. Postgermination proteolytic degradation of the essential AB15 transcription factor is interrupted by perception of an increase in ABA concentration, leading to AB15 accumulation and reactivation of embryonic genes. Making use of the ABA-hypersensitive hyl1 mutant of Arabidopsis, we show that the ABA signal is transmitted to the transcriptional apparatus through mitogenactivated protein kinase signaling.

引用

页码：15812 / 15817

页数：6

共 32 条

[1] MAP kinase signalling cascade in Arabidopsis innate immunity [J].