Simultaneous application of salicylic acid and silicon in aerial parts of Scrophularia striata L. in response to drought stress.

Autor: Shohani F; Department of Biology, Faculty of Sciences, Urmia University, Urmia, Iran. Electronic address: f.shohani@urmia.ac.ir., Hosseinin Sarghein S; Department of Biology, Faculty of Sciences, Urmia University, Urmia, 165, Urmia, Iran. Electronic address: S.hosseini@urmia.ac.ir., Fazeli A; Department of Agronomy and Plant Breeding, Faculty of Agriculture, Ilam University, Ilam, 6939177111, Iran. Electronic address: a.fazeli@ilam.ac.ir.
Jazyk: angličtina
Zdroj: Plant physiology and biochemistry : PPB [Plant Physiol Biochem] 2023 Sep; Vol. 202, pp. 107936. Date of Electronic Publication: 2023 Aug 10.
DOI: 10.1016/j.plaphy.2023.107936
Abstrakt: Plants respond to water shortage by regulating biochemical pathways which result in the biosynthesis of osmotic compounds. Active metabolites and compatible osmolytes control the inhibition of oxygen free radicals and dehydration. The physiological response of scrophularia striata to drought stress, a factorial completely randomized design (FCRD) experiment was conducted in three replication. Drought stress was induced at two levels (100% and 50% field capacity), and salicylic acid (SA) and silicon (Si) and Ecotype were also used at two levels of (0 and 100 PPM), (0 and 1 g/L) and (Ilam and Abdanan) respectively. Data analysis results indicated that the H 2 O 2 content, Malondialdehyde (MDA), glycine betaine (GB) and the activity of the enzyme glutathione reductase (GR; EC 1.6.4.2) of aerial parts increased during the entire stress exposure period. Although the SA + Si + stress + ecotype interaction increased the content of soluble carbohydrate s and the GR activity in aerial parts of Ilam and Abdanan ecotypes, this interaction led to a decrease in MDA, H 2 O 2 in Ilam ecotypes. The interaction between the stress + SA + Si + ecotype led to an increase in the phenylalanine ammonialyase (PAL; EC 4.3.1.5) activity in the Abdanan ecotype, but no important difference was observed. As compared to the control treatment, the content of Polyphenol increased, The interaction between ecotype + stress + Si caused to increased the of proline content in the Abadanan ecotype. The results showed that the increase in antioxidant defense and compatible osmolytes due to the use of SA and Si can improve the drought tolerance in S.striata.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023. Published by Elsevier Masson SAS.)
Databáze: MEDLINE
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