|Table of Contents|

Hormone Cross Talk in the Process of Seed Germination(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年06
Page:
195-198
Research Field:
Publishing date:

Info

Title:
Hormone Cross Talk in the Process of Seed Germination
Author(s):
ZHOU Feng1; 2
(1.Nanjing Xiaozhuang University,Nanjing,Jiangsu 211171;2.Shandong Provincial Key Laboratory of Eco-environmental Science for Yellow River Delta,Binzhou,Shandong 256603)
Keywords:
germination; cross talk; abscisic acid; gibberellins
PACS:
-
DOI:
10.11937/bfyy.201706045
Abstract:
Seed germination is strictly regulated by many external and internal factors.The regulation of seed germination is integrated by endogenous and environmental signals.The cross talk between abscisic acid and gibberellins,and its response to light and temperature,as well as the cross talk of abscisic acid and ethylene were emphasized in this paper.It is showed that not only does FUS3 represent a node of cross-talk between ABA and GA signal,but also it established feedback and feedforward regulatory loops that result in the amplification of the ABA response during seed maturation.FUS3 also played a critical role in the cross-talk between ABA and ethylene.It negatively regulated the expression of ethylene biosynthesis and signaling genes.Moreover,RGL2,XERICO and ABI5 represented hubs between ABA and GA signal.The switch responsible for ABA and GA regulation in response to light quality was the PIL5/PIF1.In a positive-feedback loop,an increased ABA/GA ratio at high temperatures probably maintained a higher FUS3 protein level and enhanced the ABA response.

References:

 

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Last Update: 2017-04-06