The effect of kinetin and salt stress on pnp-a expression in erucastrum strigosum and arabidopsis thaliana
Abstract
In agriculture crop productivity is greatly affected by stresses such as salinity, drought,
temperature and honnonal changes of crop plants and responses to these stresses. Studies
have shown that a natriuretic peptide based regulatory system responsible for water and ion
homeostasis in animals has a hctcrologous equivalent in plants. Plant natriuretic peptide
immunoreactants (irPNPs) have been reported to be involved in K+, Na+ and er ions fluxes
in plants. Previously, an Arabidopsis thaliana transcript (AtPNP-A) encoding an irPNP
(AtPNP-A) has been identified and isolated (Ludidi et al., 2002). The AtPNP-A a novel
protein and part of its physiological role is presented here.