Influence of Ascophyllum nodosum Extract Foliar Spray on the Physiological and Biochemical Attributes of Okra under Drought Stress

Plants

Hidayat Ullah¹  Mukhtar Alam¹  Jawad Ali¹  Ibadullah Jan¹  Nazeer Ahmed¹  Rafi Ullah¹  Mohamed El-Sharnouby²  Taufiq Nawaz³  Mustafa Shukry⁴  Samy Sayed⁵  Hosny Kesba⁶ 

[1] Department of Agriculture, University of Swabi, Swabi 23561, Pakistan;Department of Biotechnology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;Department of Food Science and Technology, The University of Agriculture, Peshawar 25130, Pakistan;Department of Physiology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh 33516, Egypt;Department of Science and Technology, University College-Ranyah, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;Zoology and Agricultural Nematology Department, Faculty of Agriculture, Cairo University, Giza 12613, Egypt;

关键词: seaweed;    Abelmoschus esculentus L.;    chlorophyll content;    antioxidant enzymes;    phenolic compounds;    abiotic stress;   

DOI  :  10.3390/plants11060790

来源: DOAJ

【 摘 要 】

Drought stress restricts the growth of okra (Abelmoschus esculentus L.) primarily by disrupting its physiological and biochemical functions. This study evaluated the role of Ascophyllum nodosum extract (ANE) in improving the drought tolerance of okra. Drought stress (3 days (control), 6 days (mild stress), and 9 days (severe stress)) and 4 doses of ANE (0, 0.1%, 0.2%, and 0.3%) were imposed after 30 days of cultivation. The results indicate that drought stress decreases the chlorophyll content (total chlorophyll, chlorophyll a, chlorophyll b, and carotenoid) but increases the activity of anthocyanin, proline, and antioxidant enzymes such as ascorbate peroxidase (APX), peroxidase (POD), and catalase (CAT). Physiological and biochemical plant disturbances and visible growth reduction in okra under drought stress were significantly decreased by the application of ANE foliar spray. ANE spray (0.3%) significantly increased the chlorophyll abundance and activity of anthocyanin, proline, and antioxidants (APX, POD, and CAT). ANE regulated and improved biochemical and physiological functions in okra under both drought and control conditions. The results of the current study show that ANE foliar spray may improve the growth performance of okra and result in the development of drought tolerance in okra.

【 授权许可】

Unknown