Boiling Soluble Proteins Involved in Drought Stress Adaptation of Embryos and Endosperm of Wheat Cultivars

Abstract

Boiling soluble proteins (BSPs), which constitutes about 0.2% of the total genome, play an key role in stress adaptation. However, drought stress induced regulation of BSPs are still a matter of conjecture. This study primarily focused indicators of oxidative stress like: ROS, lipid peroxidation, injury index and scavenging boiling soluble antioxidant enzymes in embryos and endosperm of different cultivars of wheat under different intensities of drought stress followed by stress recovery. Both in embryos and endosperm of cultivars HD 2967 and PBW 550, MII, MDA and ROS relatively unchanged, minor increased or decreased under severe drought stress conditions. Activities of different boiling soluble antioxidants like BsMDAR, BsTRX.R, BsPAO and BsPDI were substantially higher in the embryos and endosperm of cultivars HD 2967 and PBW 550 under moderate and severe stress conditions, while minor increase or decreased activities were detected in cultivars HD 2851 and HD 2932. Based on present study, it can incidental that cultivars HD2967 and PBW 550 are better equipped to perform biological antioxidant responses to eliminate drought-induced oxidative stress.