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The interaction between glucose and cytokinin signal transduction pathway in Arabidopsis thaliana

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Title The interaction between glucose and cytokinin signal transduction pathway in Arabidopsis thaliana
 
Creator Kushwah, Sunita
Laxmi, Ashverya
 
Subject hypocotyl
microarray
signalling
sugar
 
Description Accepted date: 20 May 2013
Cytokinins (CKs) and glucose (GLC) control a number of common responses in plants. We hypothesize that there may be an extensive overlap between CK- and GLC-signalling pathways. Microarray along with physiological analysis has been performed to find out the interdependence/overlap between CK and GLC signal transduction pathways in Arabidopsis seedlings. GLC could transcriptionally affect 76% of CK-regulated genes at whole genome level, 89% of which are agonistically regulated. GLC may also affect CK-regulated gene expression via non-transcriptional pathways. GLC can regulate several genes involved in CK metabolism and signalling. A number of gene families involved in development and stress are commonly regulated by CK and GLC. Physiologically, both GLC and CK could regulate hypocotyl length in dark. GLC and CK signalling may integrate at the level of type A Arabidopsis response regulators (ARRs) in controlling hypocotyl length. Both GLC and CK signalling cannot alter hypocotyl length in dark in auxin-signalling mutants auxin response2/indole-3-acetic acid7 (AXR2/IAA7) and AXR3/IAA17 suggesting that they may involve auxin-signalling component as a nodal point. Here, we demonstrate that there is an extensive overlap between CK- and GLC-regulated gene expression and physiological responses.
This work was financially supported by the National Institute of Plant Genome Research (NIPGR) core grant, Department of Biotechnology, Government of India (Grant No. BT/PR14398/BRB/843/2010) and Department of Biotechnology, Government of India research fellowship to S.K.
 
Date 2015-11-09T05:02:22Z
2015-11-09T05:02:22Z
2013
 
Type Article
 
Identifier Plant Cell and Environment, 37(1): 235-253
0140-7791
http://172.16.0.77:8080/jspui/handle/123456789/340
http://onlinelibrary.wiley.com/doi/10.1111/pce.12149/abstract
10.1111/pce.12149
 
Language en_US
 
Publisher John Wiley & Sons