Journal of Stress Physiology & Biochemistry, Vol. 7, No. 2,
2011, pp. 34- 74. ISSN 1997-0838
Original Text Copyright (cc) 2011 by Mohd Mazid, Taqi Ahmed Khan and Firoz Mohammad
REVIEW
Data source : Google Scholar
QueryDate : 2016-12-24
Cites : 31 + 4
Role of Nitric oxide in regulation of H2O2
mediating tolerance of plants to abiotic stress: A synergistic
signaling approach
Mohd Mazid1*, Taqi Ahmed Khan2, Firoz Mohammad1
1Physiology and
Biochemistry Division, Department of Botany, Faculty of Life Sciences,
AMU, Aligarh, India. 202002. 2Department of
Biochemistry, Faculty of Life Sciences, AMU, Aligarh, India. 202002.
*E-mail: mazidmohd699@gmail.com
Fax: +91-0571-2706002
Tel: +91-0571-2702016
Received March 21, 2011
Abstract – The relationship between abiotic stress, nitric oxide (NO)
and Hydrogen peroxide (H2O2) is a challenging
one. It is now clear that H2O2 and NO function as
signaling molecules in plants. A wide range of abiotic stresses results
in H2O2
generation, from a variety of sources and it has many essential roles
in plant metabolism but at the same time, accumulation related to
virtually any environmental stress is potentially damaging. NO is
gaining increasing attention as a regulator of diverse
pathophysiological processes in plant science, mainly due to its
properties (free radicals, small size, no charge, short-lived, and
highly diffusible across biological membranes) and multifunctional
roles in plant growth, development and regulation of remarkably broad
myriad of plant cellular mechanisms. Various abiotic stresses can
induce NO synthesis, but its origin and mode of action in plants have
not yet been completely resolved. Recent studies on NO production have
tended to high light the questions that still remain unanswered rather
than telling us more about NO metabolism. But regarding NO-H2O2
signaling and functions, new findings have given an impression of the
intricacy of NO-H2O2 related signaling networks
against abiotic stresses. Cellular responses to NO-H2O2
are complex, with considerable cross-talk between responses to several
abiotic stresses. In last few years, the role of NO in H2O2
mediating tolerance in plants to abiotic stress has established much
consideration.
