Record Details

Role of CIPK6 in root growth and auxin transport

NIPGR Digital Knowledge Repository (NDKR)

View Archive Info
 
 
Field Value
 
Title Role of CIPK6 in root growth and auxin transport
 
Creator Tripathi, Vineeta
Syed, Nazia
Laxmi, Ashverya
Chattopadhyay, Debasis
 
Subject Arabidopsis
CIPK6
auxin
MDR4/PGP4
root
 
Description In our recent publication,1 we have shown that a T-DNA
insertion in Arabidopsis CIPK6 gene encoding a CBL-interacting
protein kinase caused reduction in expression of the gene and
emergence of lateral roots. The change in phenotype in the
mutant line was likely due to reduction in shoot-to-root acro-
petal and the root tip basipetal auxin transport. Here we report
identification of a homozygous knockout line of AtCIPK6
(atcipk6) with no detectable expression of the gene in normal
growth condition. The knockout line exhibited considerable
decrease in growth rate of the taproot as well as in emergence
of lateral roots. The mutant line also showed reduction in the
root tip basipetal and shoot-to-root acropetal auxin transport.
Relative rate of auxin transport and the root phenotype of the
atcipk6 closely matched with those of pgp4-1, an Arabidopsis
line mutated in PGP4. This gene encodes an ABC integral
membrane transporter, which functions in polar auxin transport.
These observations strengthen our earlier proposal that CIPK6
is probably involved in polar auxin transport and indicate that it
may function through the PGP4 auxin transporter.
The project was funded by the Department of Biotechnology,
Government of India. V.T. acknowledges fellowship from National
Institute of Plant Genome Research. N.S. acknowledges fellowship
from Indian Council of Medical Research.
 
Date 2014-02-13T10:21:23Z
2014-02-13T10:21:23Z
2009
13 May 2009
 
Type Article
 
Identifier Plant Signal. Behav., 4: 663-665
http://hdl.handle.net/123456789/132
 
Language en
 
Publisher Landes Bioscience