Record Details

Temperature induced changes in anti-oxidative stress metabolism in maize

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Temperature induced changes in anti-oxidative stress metabolism in maize
Not Available
 
Creator S. K. Yadav
 
Subject Anti-oxidative metabolism
heat stress tolerance
maize
climate change
 
Description Not Available
Anti-oxidative system in plants comprising of enzymatic and non-enzymatic antioxidants imparts
stress tolerance by scavenging/detoxification of excess reactive oxygen species (ROS) produced
under high temperature stress. Present investigation deals with the estimation of metabolites and
anti-oxidative enzyme activities in four inbred maize lines; NSJ221, NSJ189, PSRJ13099 and RJR270
in response to high temperature stress imposed at reproductive stage by staggered sowing. An
increase in H2O2 and malondialdehyde (MDA) was observed in all the genotypes, however the increase
was higher in PSRJ13099 and RJR270. The activities of studied enzymes increased in NSJ189
and NSJ221 while a decrease was observed in PSRJ13099 and RJR270. Under heat stress isoforms of
SOD increased in NSJ189 and NSJ221 while a concomitant decrease was observed in PSRJ13099 and
RJR270. Two new SOD-isoforms were also observed in NSJ221. GPX showed more number of high
mobility isoforms with low activity in NSJ221 and less mobile isoforms with higher activity in both
NSJ189 and NSJ221. Whereas, PSRJ13099 and RJR270 showed decrease band intensity of less mobile
GPX-isoforms under heat stress. Activity of CAT-isoforms increased to a similar extent across the
genotypes under heat stress. In case of non-enzymatic antioxidants, non-protein thiols increased in
all the genotypes while the level of carotenoids depleted in all the genotypes except NSJ221. Ascorbate
(AsA) levels depleted in PSRJ13099 and RJR270 and increased in NSJ189 and NSJ221 under heat
stress. Understanding the intricate regulatory pathways in crop plants under heat stress will help in
developing genotypes with enhanced stress tolerance.
Not Available
 
Date 2021-08-17T08:51:55Z
2021-08-17T08:51:55Z
2019-01-01
 
Type Review Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/57584
 
Language English
 
Relation Not Available;
 
Publisher Brill