| Autor: |
Dawood MFA; Botany and Microbiology Department, Faculty of Science, Assiut University, Assiut 71516, Egypt., Sohag AAM; Department of Biochemistry and Molecular Biology, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh., Tahjib-Ul-Arif M; Department of Biochemistry and Molecular Biology, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh., Abdel Latef AAH; Department of Biology, Turabah University College, Turabah Branch, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia. Electronic address: a.moawd@tu.edu.sa. |
| Jazyk: |
angličtina |
| Zdroj: |
Plant physiology and biochemistry : PPB [Plant Physiol Biochem] 2021 Feb; Vol. 159, pp. 347-362. Date of Electronic Publication: 2021 Jan 04. |
| DOI: |
10.1016/j.plaphy.2020.12.034 |
| Abstrakt: |
Regulatory roles of hydrogen sulfide (H 2 S) under saline-alkaline and/or aniline stress have not been studied yet. In this study, we investigated the insights into saline-alkaline and/or aniline stresses-induced toxicity in artichoke plants and its alleviation by H 2 S priming. Individual saline-alkaline or aniline stress and their combination reduced plant growth and photosynthetic pigments. Principal component analysis (PCA) revealed that these detrimental impacts were caused by the higher oxidative damage and disruption of osmolyte homeostasis. Interestingly, only aniline stress (25 mg L -1 ) caused neither oxidative nor osmotic stress thus almost slight growth retarding effects had ensued. On the other hand, the presence of aniline in saline-alkaline conditions exacerbated stress-induced deleterious effects on plants, as evidenced by PCA and heatmap. However, H 2 S priming markedly eased the stress-induced deleteriousness as evident by enhanced chlorophyll, soluble proteins, soluble carbohydrates and up-regulated water relation in H 2 S-primmed plants compared with only stressed plants resulting in improved plant phenotypic features. Furthermore, H 2 S priming enhanced endogenous H 2 S content, phenylalanine ammonia-lyase, non-enzymatic antioxidants (ascorbic acid, flavonoids, glutathione, α-tocopherol, and anthocyanins) and enzymatic antioxidants (superoxide dismutase, catalase, and ascorbate peroxidase), whereas reduced oxidative stress markers (superoxide, hydrogen peroxide, hydroxyl radical, malondialdehyde, and methylglyoxal) compared with only stressed plants, indicating a protective function of H 2 S against oxidative damage. The PCA also clarified that H 2 S-mediated saline-alkaline and/or aniline stress tolerance strongly connected with the improved antioxidant system. Overall, our finding proposed that H 2 S priming could be an effective technique to mitigate saline-alkaline and/or aniline stress in artichoke, and perhaps in other crop plants.
(Copyright © 2021 Elsevier Masson SAS. All rights reserved.) |
| Databáze: |
MEDLINE |
| Externí odkaz: |
|
Full Text from ScienceDirect