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Cytokinin-induced root growth involves actin filament reorganization

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Title Cytokinin-induced root growth involves actin filament reorganization
 
Creator Kushwah, Sunita
Jones, Alan M.
Laxmi, Ashverya
 
Subject Arabidopsis
cytokinin
actin
signaling
 
Description Root architecture is developmentally plastic and affected by many intrinsic factors (e.g. plant hormones) and extrinsic factors (e.g. touch, gravity) in order to maximize nutrient and water acquisition. We have recently shown that asymmetrical exposure of cytokinin (CK) at the root tip causes root growth directional changes that is dependent on ethylene signaling and is potentiated by glucose signaling. Auxin homeostasis as maintained by auxin signaling and transport is also involved in CK-induced root cell elongation and differential growth. The signaling pathways eventually converge at actin filament organization since actin filament organization inhibitor latrunculin B (Lat B) can also induce similar growth. We, show that CK can actually alter actin filament organization as seen in actin binding protein 35S::GFP-ABD2-GFP transgenic lines as is also altered by auxin polar transport inhibitor 1-N-naphthylphthalamic acid (NPA) and Lat B in different manners.
We are grateful to the National
Institute of Plant Genome Research
Confocal Imaging facility for their assistance and help. This work was financially supported by the National Institute of
Plant Genome Research (NIPGR) core
grant and Department of Biotechnology,
Government of India (research fellowship
to S.K.)
 
Date 2014-04-29T09:21:21Z
2014-04-29T09:21:21Z
2011
5 August 2011
 
Type Article
 
Identifier Plant Signal. Behav., 6(11): 1848-1850
http://hdl.handle.net/123456789/200
 
Language en
 
Publisher Landes Bioscience