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The interaction between glucose and cytokinin signaling in controlling Arabidopsis thaliana seedling root growth and development

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Title The interaction between glucose and cytokinin signaling in controlling Arabidopsis thaliana seedling root growth and development
 
Creator Kushwah, Sunita
Laxmi, Ashverya
 
Subject Arabidopsis
cytokinin
glucose
lateral roots
root hairs
root length
signaling
 
Description Accepted date: 22 Mar 2017
Cytokinin (CK) and glucose (GLC) control a number of common responses in plants. There is an extensive overlap between CK and GLC signal transduction pathways in Arabidopsis. Physiologically, both GLC and CK could regulate root length in light. CK interacts with GLC via HXK1 dependent pathway for root length control. Wild-type (WT) roots cannot elongate in the GLC free medium while CK-receptor mutant ARABIDOPSIS HISTIDINE KINASE4 (ahk4) and type B ARR triple mutant ARABIDOPSIS RESPONSE REGULATOR1, 10,11 (arr1, 10,11) roots could elongate even in the absence of GLC as compared to the WT. The root hair initiation was also found defective in CK signaling mutants ahk4, arr1,10,11 and arr3,4,5,6,8,9 on increasing GLC concentration (up to 3%); and lesser number of root hairs were visible even at 5% GLC as compared to the WT. Out of 941 BAP regulated genes, 103 (11%) genes were involved in root growth and development. Out of these 103 genes, 60 (58%) genes were also regulated by GLC. GLC could regulate 5736 genes, which include 327 (6%) genes involved in root growth and development. Out of these 327 genes, 60 (18%) genes were also regulated by BAP. Both GLC and CK signaling cannot alter root length in light in auxin signaling mutant AUXIN RESPONSE3/INDOLE-3-ACETIC ACID17 (axr3/iaa17) suggesting that they may involve auxin signaling component as a nodal point. Therefore CK- and GLC- signaling are involved in controlling different aspects of root growth and development such as root length, with auxin signaling components working as downstream target.
We are thankful to Department of Biotechnology (DBT), Government of India and National Institute of Plant Genome Research (NIPGR) for providing financial assistance.
 
Date 2017-05-05T09:00:13Z
2017-05-05T09:00:13Z
2017
 
Type Article
 
Identifier Plant Signaling & Behavior, (In Press)
1559-2324
http://59.163.192.83:8080/jspui/handle/123456789/745
http://www.tandfonline.com/doi/full/10.1080/15592324.2017.1312241?scroll=top&needAccess=true
http://dx.doi.org/10.1080/15592324.2017.1312241
 
Language en_US
 
Publisher Taylor & Francis Group