Preprint Article Version 2 Preserved in Portico This version is not peer-reviewed

Does Omeprazole and Melatonin Enhance Photosynthetic Efficiency in Bean Plants?

Carlos Abel Ramírez-Estrada
ORCID logo ,
Esteban Sánchez
* ,
María Antonia Flores-Córdova
ORCID logo ,
Sandra Pérez-Álvarez
,
Linda Citlalli Noperi-Mosqueda
,
Celia Chávez-Mendoza
ORCID logo
Version 1 : Received: 28 June 2023 / Approved: 30 June 2023 / Online: 30 June 2023 (09:47:23 CEST)
Version 2 : Received: 24 August 2023 / Approved: 28 August 2023 / Online: 28 August 2023 (03:54:41 CEST)

A peer-reviewed article of this Preprint also exists.

Ramírez-Estrada, C.A.; Sánchez, E.; Flores-Córdova, M.A.; Pérez-Álvarez, S.; Noperi-Mosqueda, L.C.; Chávez-Mendoza, C. Photosynthetic Efficiency in Green Bean Plants through the Application of Omeprazole and Melatonin at Low Doses. Int. J. Plant Biol. 2023, 14, 864-878. Ramírez-Estrada, C.A.; Sánchez, E.; Flores-Córdova, M.A.; Pérez-Álvarez, S.; Noperi-Mosqueda, L.C.; Chávez-Mendoza, C. Photosynthetic Efficiency in Green Bean Plants through the Application of Omeprazole and Melatonin at Low Doses. Int. J. Plant Biol. 2023, 14, 864-878.

Abstract

Current environmental conditions have prompted agri-food systems to explore new strategies for improving the production of crops in a sustainable manner. The use of omeprazole (OMP) and melatonin (MEL) have been proposed as innovative strategy for crop improvement when applied as biostimulants. However, although their role in the growth of several species has been studied, the results in photosynthetic efficiency parameters are still scarce. Therefore, the objec-tive of the present study was to evaluate the effect of foliar application of OMP and MEL on bi-omass, yield, SPAD values, leaf chlorophyll fluorescence (Fv/Fm), photochemical quenching (qP), Non-photochemical quenching (NPQ), quantum yield of photosystem II (PhiPSII) and elec-tron transport rate (ETR) in bean plants. Treatments were applied separately at doses of 1, 10, and 100 µM, plus a control without application. The results obtained indicate that OMP and MEL were able to increase biomass, yield, SPAD values, as well as photochemical quenching, fluores-cence, and PhiPSII coefficients. Finally, it is concluded that foliar application of OMP and MEL at a dose of 1 and 10 µM can increase photosynthetic efficiency and decrease photoinhibition, which is reflected in higher biomass accumulation and yield in green bean plants cv. Strike.

Keywords

Phaseolus vulgaris L.; photochemical quenching; benzimidazole; photosystem II; CO2

Subject

Biology and Life Sciences, Agricultural Science and Agronomy

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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