Organic amendments improve salinity-induced osmotic and oxidative stress tolerance in Okra (Abelmoschus esculentus (L.)Moench)

BMC Plant Biology

Research

Khadiga Alharbi¹  Alia Naseem²  Sumera Iqbal²  Khajista Jabeen²  Aisha Umar³  Iftikhar Ali⁴  Mohammed Antar⁵  Katarzyna Grądecka-Jakubowska⁶  Marek Gancarz⁷ 

[1] Department of Biology, College of science, Princess Nourah bint Abdulrahman University, P.O.Box 84428, 11671, Riyadh, Saudi Arabia;Department of Botany, Lahore College for Women University, Lahore, Pakistan;Department of Botany, Lahore College for Women University, Lahore, Pakistan;Institute of Botany, University of the Punjab, Lahore, Pakistan;Department of Genetics and Development, Columbia University Irving Medical Center, 10032, New York, NY, USA;School of Life Sciences & Center of Novel Biomaterials, The Chinese University of Hong Kong, Shatin, Hong Kong;Department of Plant Science, McGill University, Sainte-Anne-de-Bellevue, H9X 3V9, Quebec, Canada;Faculty of Production and Power Engineering, University of Agriculture in Krakow, Balicka 116B, 30-149, Krakow, Poland;Faculty of Production and Power Engineering, University of Agriculture in Krakow, Balicka 116B, 30-149, Krakow, Poland;Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290, Lublin, Poland;

关键词: Okra;    Organic amendments;    Salinity stress;    Compost;    Farmyard manure;    Press mud;   

DOI  :  10.1186/s12870-023-04527-x

 received in 2023-08-18, accepted in 2023-10-16,  发布年份 2023

来源: Springer

【 摘 要 】

AimsSalinity adversely affects okra [Abelmoschus esculentus (L.) Moench] plants by inducing osmotic and oxidative stresses. This study was designed to enhance salinity-induced osmotic and oxidative stress tolerance in okra plants by applying organic amendments.MethodsThe effects of different organic amendments (municipal solid waste compost, farmyard manure (FYM) and press mud) on osmotic potential, water use efficiency, activities of antioxidant enzymes, total soluble sugar, total soluble proline, total soluble protein and malondialdehyde (MDA) contents of okra plants grown under saline conditions (50 mM sodium chloride) were evaluated in a pot experiment. The organic amendments were applied each at the rate of 5% and 10% per pot or in various combinations (compost + FYM, FYM + press mud and compost + press mud each at the rate of 2.5% and 5% per pot).ResultsAs compared to control, high total soluble sugar (60.41), total soluble proline (33.88%) and MDA (51%) contents and increased activities of antioxidant enzymes [superoxide dismutase (83.54%), catalase (78.61%), peroxidase (53.57%] in salinity-stressed okra plants, were indicative of oxidative stress. Salinity significantly reduced the osmotic potential (41.78%) and water use efficiency (4.75%) of okra plants compared to control. Under saline conditions, 5% (farmyard manure + press mud) was the most effective treatment, which significantly improved osmotic potential (27.05%), total soluble sugar (4.20%), total soluble protein (73.62%) and total soluble proline (23.20%) contents and superoxide dismutase activity (32.41%), compared to saline soil. Application of 2.5% (FYM + press mud), 5% press mud, and 10% compost significantly reduced MDA content (27%) and improved activities of catalase (38.64%) and peroxidase (48.29%), respectively, compared to saline soil, thus facilitated to alleviate oxidative stress in okra plants.ConclusionsUsing organic amendments (municipal solid waste compost, farmyard manure and press mud) was a cost-effective approach to improve salinity-induced osmotic and oxidative stress tolerance in okra plants.

【 授权许可】

CC BY   
© The Author(s) 2023

【 图 表 】

12951_2016_225_Article_IEq3.gif

12951_2017_252_Article_IEq1.gif

Fig. 4

Fig. 6

Fig. 5

12951_2017_255_Article_IEq53.gif

12888_2023_5292_Article_IEq1.gif

12951_2017_255_Article_IEq52.gif

Fig. 6

42004_2023_1031_Figa_HTML.png

Fig. 2

12951_2015_155_Article_IEq72.gif