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Regulation of TOP2 by various abiotic stresses including cold and salinity in pea and transgenic tobacco plants

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Title Regulation of TOP2 by various abiotic stresses including cold and salinity in pea and transgenic tobacco plants
 
Creator Hettiarachchi, Gardhi H. C. M.
Reddy, Malireddy K.
Sopory, Sudhir K.
Chattopadhyay, Sudip
 
Subject TOP2
Promoter
Stress
Gene expression
Pea
Tobacco
 
Description Although abiotic stress affects plant growth and development, demonstration of its direct effect on regulation of
the components of the DNA replication machinery is
largely unknown. In this work, we demonstrate that the
expression of TOP2 (encoding topoisomerase II) is up-regulated by various abiotic stresses including salinity and low
temperature, and phytohormones such as ABA (abscisic acid) and SA (salicylic acid). Transgenic studies with different deletion versions of the TOP2 promoter in tobacco
define several promoter determinants responsible for specific abiotic stress responsiveness. Taken together, these
results demonstrate a direct involvement of stress in the
transcriptional regulation of TOP2.
This work was supported by the internal grant of NCPGR and a DBT grant to S.C., and
the internal grant of ICGEB to S.K.S.
 
Date 2013-10-30T10:14:37Z
2013-10-30T10:14:37Z
2005
April 19, 2005
 
Type Article
 
Identifier Plant and Cell Physiology, 46: 1154-1160
http://hdl.handle.net/123456789/41
 
Language en
 
Publisher Oxford University Press