Role of abscisic acid and drought stress on the activities of antioxidant enzymes in wheat

By A. Bano, Faizan Ullah, A. Nosheen. 2018

83 citations recorded by the source corpus.

The effect of drought stress and abscisic acid (ABA) applied at tillering stage (55 days after sowing) was compared in 2 wheat cultivars differing in drought tolerance. The activities of superoxide dismutase (SOD) and peroxidase (POD) and contents of endogenous ABA in plants were measured at 3 days of drought stress in cv. Chakwal-97 (drought tolerant) and cv. Punjab-96 (drought susceptible). ABA was applied at 10 –6 mol/L as presowing seed treatment for 18 h. Drought tolerant cultivar has a more efficient mechanism to scavenge reactive oxygen species as shown by a significant increase in the activity of antioxidant enzyme SOD. Under drought stress, ABA significantly increased the activities of SOD and POD, showing a significant decline on rewatering. The relative water content was significantly increased by ABA priming under drought stress in both wheat cultivars. The sensitive cultivar exhibiting lower endogenous ABA content was more responsive to ABA priming. On rewatering, the magnitude of recovery from drought stress was greater in tolerant cultivar. ABA was highly effective in improving grain weight of tolerant cultivar under drought stress.

Subfields: Plant Science

View Paper: https://www.semanticscholar.org/paper/87bb1fe850fc4e70838cf52bc2547c87595576d6

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Plant Science

1. S. Maitra
2. Marian Brestic

Citations in the corpus

• Consequences and Mitigation Strategies of Abiotic Stresses in Wheat (Triticum aestivum L.) under the Changing Climate (2021, background): “[134] described that exogenous ABA application increases wheat tolerance to drought stress and protects plants from droughtinduced oxidative damage through enhancing antioxidant defense mechanism.”