Salicylic acid mediated physiological and biochemical alterations to confer drought stress tolerance in Zinnia (Z. elegans)
| Autor: | Gulzar Akhtar, Fahim Nawaz, Muhammad Amin, Muhammad Asif Shehzad, Kashif Razzaq, Nazar Faried, Yasar Sajjad, Amjad Farooq, Ahsan Akram, Sami Ullah |
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| Jazyk: | English<br />Spanish; Castilian |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Botanical Sciences, Vol 100, Iss 4 (2022) |
| Druh dokumentu: | article |
| ISSN: | 2007-4298 2007-4476 |
| DOI: | 10.17129/botsci.2966 |
| Popis: | Background: Protective role of salicylic acid against drought has been widely reported, but its effects on Zinnia elegansremain unknown. Hypotheses: Foliar salicylic acid (SA) improves water status, pigments, and antioxidant systems of Zinnia plants under drought stress. Studied species: Z. elegans (cv. Dreamland) were purchased from Chanan Seeds Store Lahore, Pakistan. Study site and dates: MNS University of Agriculture, Multan, Punjab, Pakistan; March-May, 2018. Methods: After two weeks of transplanting, one set of seedlings was exposed to drought stress (60 % field capacity, FC) while other control set was maintained at 100 % FC. Foliar SA (100 mg L-1) was applied to plants at drought initiation. Results: Foliar SA treatment to water stressed plants (60 % FC) increased the leaf area (46.89 cm2), shoot and root lengths (25 cm and 26.67 cm, respectively), leaf relative water content (75.98 %); chlorophyll a (0.68 mg g-1), chlorophyll b (0.38 mg g-1) and carotenoid concentrations (1.10 mg g-1); and catalase (116.67 U min-1 mg-1 protein), guaiacol peroxide (72 U min-1 mg-1 protein) and superoxide dismutase (93 U min-1 mg-1 protein) activities. Conclusions: Foliar SA could be used to minimize impacts of water stress in Zinnia plants. |
| Databáze: | Directory of Open Access Journals |
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