Effect of Exogenous Salicylic Acid on Growth Parameters, Gas Exchange, and Photosynthetic Yields in Salt-Stressed Vicia faba L. Plants

This study aimed to evaluate the potential effect of salicylic acid (SA) on the photosynthetic performance of faba bean ( Vicia faba L.) plants under salt stress conditions. For this purpose, two salinity levels (0 and 120 mM) combined with two concentrations of SA (0 and 0.5 mM) were applied. Resul...

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Bibliographic Details
Published in:Russian journal of plant physiology 2022-12, Vol.69 (7), Article 149
Main Authors: Anaya, F., Fghire, R., Lamnai, K., Loutfi, K., Wahbi, S., Carvalho, I. S.
Format: Article
Language:English
Subjects:
Abiotic stress
Beans
Biomedical and Life Sciences
Broad beans
Chlorophyll
Dissipation
Electron transport
Fluorescence
Gas exchange
Life Sciences
Parameters
Photochemicals
Photosynthesis
Photosystem II
Plant Physiology
Plant Sciences
Research Papers
Salicylic acid
Salinity tolerance
Salts
Stress
Transport rate
Vicia faba
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Summary:This study aimed to evaluate the potential effect of salicylic acid (SA) on the photosynthetic performance of faba bean ( Vicia faba L.) plants under salt stress conditions. For this purpose, two salinity levels (0 and 120 mM) combined with two concentrations of SA (0 and 0.5 mM) were applied. Results showed that salt stress decreases the growth and gas exchange parameters ( P N , C i , g s , and T r ). Chlorophyll fluorescence imaging parameters showed a decrease in the effective photochemical quantum yield of PSII (YPII), photochemical quenching (qP), and electron transport rate (ETR), while the regulated (Y(NPQ) and unregulated dissipation energy Y(NO)) were increased under stress conditions. However, exogenous SA application under salt stress decreases the non-regulated dissipation and improves photosynthetic performance (Y(PSII), ETR, qP, and Y(NPQ)), growth, and gas exchange parameters. Consequently, SA application had a beneficial effect on the faba bean tolerance to salt stress and can be recommended for field application with low concentration.
ISSN:1021-4437
1608-3407
DOI:10.1134/S1021443722100685