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- W2141716222 abstract "In dry or semi-dry areas, plants encounter a combination of environmental stress that include drought or heat shock. Although drought and heat shock have been extensively studied, their combination affect on plants is still a matter of conjuncture. Antioxidant enzymes (like SOD, CAT and POD) are widely found in plants having intracellular and extracellular antioxidant activities. These enzymes are known to maintain oxidative stress induced-ROS at sub-lethal levels in plants under abiotic stress conditions but the role of boiling stable antioxidant enzymes in adaptation to combined stresses has not been critically evaluated. In this study, the combined effect of drought stress and heat shock on the induction of boiling stable proteins in general and boiling stable acid antioxidant enzymes (PRX,SOD,CAT) in particular were studied in 3-day old tissues (shoot, seed and root) of wheat. Imposition of combined stresses resulted in sharp decrease in tissue water content in tissues. The profile of boiling stable protein was outlined via SDS electrophoresis of tissue extracts. Many boiling stable protein bands were detected under different stress treatments in seeds samples only. Additionally, many differential boiling stable protein bands were detected in the shoot samples only under simultaneously imposed drought/heat stresses (DH). Zymography (in-gel activity) analysis revealed that among various antioxidant enzymes like SOD and CAT, only PRX was detected as a boiling stable protein. The in-gel activity analysis revealed sharp induction of BsPRX isoforms (BsPRX 1,2,3) during combined drought and heat stress (DH) conditions in seeds and shoots as compared to separately applied heat (H) and drought treatments (D). This indicates their role in water stress adaptation under simultaneous applied abiotic stress conditions. Alteration in boiling stable protein expression was more pronounced in seeds as compared to shoots of both the cultivars. Based upon these observations, the possible role of boiling stable proteins (hydrophilins) in combined stress tolerance is discussed." @default.
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- W2141716222 date "2013-01-01" @default.
- W2141716222 modified "2023-09-23" @default.
- W2141716222 title "Expression of Boiling-stable Peroxidase (PRX) isoenzymes under combined effect of drought and heat in different tissues of Triticum aestivum" @default.
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