155957 - Biochemical response of Okra.pdf (1.52 MB)
Biochemical Response of Okra (Abelmoschus esculentus L.), to Selenium (Se) under Drought Stress
journal contribution
posted on 2023-05-21, 17:10 authored by Ali, J, Jan, I, Ullah, H, Fadad, S, Saud, S, Adnan, M, Ali, B, Ke LiuKe Liu, Matthew HarrisonMatthew Harrison, Hassan, S, Kumar, S, Khan, MA, Kamran, M, Alwahibi, MS, Elshikh, MSDrought stress restricts the growth of okra (Abelmoschus esculentus L) by disrupting its biochemical and physiological functions. The current study was conducted to evaluate the role of selenium (0, 1, 2, and 3 mg Se L−1 as a foliar application) in improving okra tolerance to drought (control (100% field capacity-FC), mild stress (70% FC), and severe stress (35% FC)) imposed 30 days after sowing (DAS). Drought (severe) markedly decreased chlorophyll (32.21%) and carotenoid (39.6%) contents but increased anthocyanin (40%), proline (46.8%), peroxidase (POD by 12.5%), ascorbate peroxidase (APX by 11.9%), and catalase (CAT by 14%) activities. Overall, Se application significantly alleviated drought stress-related biochemical disturbances in okra. Mainly, 3 mg Se L−1 significantly increased chlorophyll (21%) as well as anthocyanin (15.14%), proline (18.16%), and antioxidant activities both under drought and control conditions. Selenium played a beneficial role in reducing damage caused by oxidative stress, enhancing chlorophyll and antioxidants contents, and improved plant tolerance to drought stress. Therefore, crops including okra especially, must be supplemented with 3 mg L−1 foliar Se for obtaining optimum yield in arid and semiarid drought-affected areas.
History
Publication title
SustainabilityVolume
15Issue
7Article number
5694Number
5694Pagination
1-15ISSN
2071-1050Department/School
Tasmanian Institute of Agriculture (TIA)Publisher
MDPI AGPlace of publication
SwitzerlandRights statement
© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) license (https://creativecommons.org/licenses/by/4.0/).Repository Status
- Open