Regulation of redox homeostasis in cadmium stressed rice field cyanobacteria by exogenous hydrogen peroxide and nitric oxide.

ABSTRACT: In the present study, defensive strategies of H₂O₂ mediated NO signaling were analyzed in Cd stressed Nostoc muscorum and Anabaena sp. Exogenously supplied SNP (10 µM) and H₂O₂ (1 µM) lessen the toxicity of Cd (6 µM) but without NO; H₂O₂ was unable to release the stress from cyanobacterial cells potentially. The reduced contents of exopolysaccharide, protein content, endogenous NO and enzymatic antioxidants (SOD, POD, CAT, and GST) due to Cd toxicity, were found increased significantly after exogenous application of H₂O₂ and SNP thereafter, cyanobacterial calls flourished much better after releasing toxic level of Cd. Moreover, increased level of ROS due to Cd stress also normalized under exogenous appl

SUBMITTER: Verma N 

PROVIDER: S-EPMC7858583 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature