Version 1
: Received: 4 March 2024 / Approved: 6 March 2024 / Online: 6 March 2024 (10:20:24 CET)
How to cite:
Gonçalves, F.C.D.M.; Mantoan, L.P.B.; Corrêa, C.V.; Parreiras, N.D.S.; De Almeida, L.F.R.; Ono, E.O.; Rodrigues, J.D.; Prado, R.D.M.; Boaro, C.S.F. Unraveling the Mechanisms of Salicylic Acid and Rehydration and the Physiological Benefits in Pepper Plants Grown under Water Deficit. Preprints2024, 2024030328. https://doi.org/10.20944/preprints202403.0328.v1
Gonçalves, F.C.D.M.; Mantoan, L.P.B.; Corrêa, C.V.; Parreiras, N.D.S.; De Almeida, L.F.R.; Ono, E.O.; Rodrigues, J.D.; Prado, R.D.M.; Boaro, C.S.F. Unraveling the Mechanisms of Salicylic Acid and Rehydration and the Physiological Benefits in Pepper Plants Grown under Water Deficit. Preprints 2024, 2024030328. https://doi.org/10.20944/preprints202403.0328.v1
Gonçalves, F.C.D.M.; Mantoan, L.P.B.; Corrêa, C.V.; Parreiras, N.D.S.; De Almeida, L.F.R.; Ono, E.O.; Rodrigues, J.D.; Prado, R.D.M.; Boaro, C.S.F. Unraveling the Mechanisms of Salicylic Acid and Rehydration and the Physiological Benefits in Pepper Plants Grown under Water Deficit. Preprints2024, 2024030328. https://doi.org/10.20944/preprints202403.0328.v1
APA Style
Gonçalves, F.C.D.M., Mantoan, L.P.B., Corrêa, C.V., Parreiras, N.D.S., De Almeida, L.F.R., Ono, E.O., Rodrigues, J.D., Prado, R.D.M., & Boaro, C.S.F. (2024). Unraveling the Mechanisms of Salicylic Acid and Rehydration and the Physiological Benefits in Pepper Plants Grown under Water Deficit. Preprints. https://doi.org/10.20944/preprints202403.0328.v1
Chicago/Turabian Style
Gonçalves, F.C.D.M., Renato de Mello Prado and Carmen Sílvia Fernandes Boaro. 2024 "Unraveling the Mechanisms of Salicylic Acid and Rehydration and the Physiological Benefits in Pepper Plants Grown under Water Deficit" Preprints. https://doi.org/10.20944/preprints202403.0328.v1
Abstract
The present study aims to unravel the mechanisms of salicylic acid and rehydration and the physiological benefits in pepper plants grown under water deficit. 3x4 factorial scheme adopted, with three water regimes (irrigated, dry and rehydration) and four SA concentrations, namely: 0 (control), 0.5, 1 and 1.5 mM. Evaluated leaf moisture percentage, leaf water potential, chlorophylls (a and b), carotenoids, stomatal conductance, chlorophyll a fluorescence and H2O2 concentration at different times throughout the day and water conditions (irrigated, dry and rehydration) and SA applications (without the addition of the regulator (0) and with SA addition at concentrations equal to 0.5, 1 and 1.5 mM). Exogenous SA application favored stomatal conductance responses(gs) and modified fluorescence parameters (Fm, Fo, Fm', Fo', Fv/Fm, qP, ETR and NPQ) of sweet pepper plants subjected to drought followed by rehydration. SA concentration of 0.5 mM allowed a more expressive recovery of gs indices, effective quantum yield of photosystem II, with emphasis on excess energy (E) and maximum quantum yield (FV/FM) over time in plants subjected to drought and rehydration. We discovered that the use of SA, especially in association with rehydration, by modulating the variables gs and chlorophyll a fluorescence, prevents damage to membranes and consequently mitigates water deficit in pepper plants.
Keywords
vegetal regulator; water deficit; photosynthetic pigments; stomatal conductance; chlorophyll a fluorescence; hydrogen peroxide
Subject
Biology and Life Sciences, Plant Sciences
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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