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Calmodulin-like protein CML37 is a positive regulator of ABA during drought stress in Arabidopsis

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Title Calmodulin-like protein CML37 is a positive regulator of ABA during drought stress in Arabidopsis
 
Creator Scholz, Sandra S
Reichelt, Michael
Vadassery, Jyothilakshmi
Mithöfer, Axel
 
Subject Arabidopsis thaliana
abscisic acid
CML37
CML42
calmodulin-like proteins
drought stress
 
Description Accepted date: 22 Jan 2015
Plants need to adapt to various stress factors originating from the environment. Signal transduction pathways connecting the recognition of environmental cues and the initiation of appropriate downstream responses in plants often involve intracellular Ca(2+) concentration changes. These changes must be deciphered into specific cellular signals. Calmodulin-like proteins, CMLs, act as Ca(2+) sensors in plants and are known to be involved in various stress reactions. Here, we show that in Arabidopsis 2 different CMLs, AtCML37 and AtCML42 are antagonistically involved in drought stress response. Whereas a CML37 knock-out line, cml37, was highly susceptible to drought stress, CML42 knockout line, cml42, showed no obvious effect compared to wild type (WT) plants. Accordingly, the analysis of the phytohormone abscisic acid (ABA) revealed a significant reduction of ABA upon drought stress in cml37 plants, while in cml42 plants an increase of ABA was detected. Summarizing, our results show that both CML37 and CML42 are involved in drought stress response but show antagonistic effects.
 
Date 2016-01-22T08:27:36Z
2016-01-22T08:27:36Z
2015
 
Type Article
 
Identifier Plant Signal. Behav., 10(6): e1011951
1559-2324
http://172.16.0.77:8080/jspui/handle/123456789/575
http://www.tandfonline.com/doi/full/10.1080/15592324.2015.1011951
10.1080/15592324.2015.1011951
 
Language en_US
 
Publisher Taylor & Francis Group