Glutathione-mediated changes in productivity, photosynthetic efficiency, osmolytes, and antioxidant capacity of common beans ( Phaseolus vulgaris ) grown under water deficit.

Autor: Abd El Mageed TA; Soil and Water Department, Faculty of Agriculture, Fayoum University, Fayoum, Egypt., Semida W; Horticulture Department, Faculty of Agriculture, Fayoum University, Fayoum, Egypt., Hemida KA; Botany Department, Faculty of Science, Fayoum University, Fayoum, Egypt., Gyushi MAH; Horticulture Department, Faculty of Agriculture, Fayoum University, Fayoum, Egypt., Rady MM; Botany Department, Faculty of Agriculture, Fayoum University, Fayoum, Egypt., Abdelkhalik A; Horticulture Department, Faculty of Agriculture, Fayoum University, Fayoum, Egypt., Merah O; Laboratoire de Chimie Agro-industrielle, Université de Toulouse, Toulouse, Toulouse, France.; IUT A, Département Génie Biologique, Université Paul Sabatier-Toulouse III, Auch, France., Brestic M; Plant Physiology, Slovak University of Agriculture, Nitra, Nitra, Slovakia.; Institute of Plant and Environmental Sciences, Slovak University of Agriculture in Nitra, A. Hlinku 2, Nitra, Slovakia., Mohamed HI; Biological and Geological Sciences Department, Faculty of Education, Ain Shams University, Cairo, Egypt., El Sabagh A; Department of Agronomy, Faculty of Agriculture, Kafrelsheikh University, Kafr Al-Sheik, Egypt.; Botany Department, National Research Centre, Cairo, Egypt., Abdelhamid MT; Botany Department, National Research Centre, Cairo, Egypt.; Department of Soil and Crop Sciences, Texas A&M University, College Station, TX, United States of America.
Jazyk: angličtina
Zdroj: PeerJ [PeerJ] 2023 Jun 22; Vol. 11, pp. e15343. Date of Electronic Publication: 2023 Jun 22 (Print Publication: 2023).
DOI: 10.7717/peerj.15343
Abstrakt: Globally, salinity and drought are severe abiotic stresses that presently threaten vegetable production. This study investigates the potential exogenously-applied glutathione (GSH) to relieve water deficits on Phaseolus vulgaris plants cultivated in saline soil conditions (6.22 dS m -1 ) by evaluating agronomic, stability index of membrane, water satatus, osmolytes, and antioxidant capacity responses. During two open field growing seasons (2017 and 2018), foliar spraying of glutathione (GSH) at 0.5 (GSH 1 ) or 1.0 (GSH 1 ) mM and three irrigation rates (I 100 = 100%, I 80 = 80% and I 60 = 60% of the crop evapotranspiration) were applied to common bean plants. Water deficits significantly decreased common bean growth, green pods yield, integrity of the membranes, plant water status, SPAD chlorophyll index, and photosynthetic capacity (F v /F m , PI), while not improving the irrigation use efficiency (IUE) compared to full irrigation. Foliar-applied GSH markedly lessened drought-induced damages to bean plants, by enhancing the above variables. The integrative I 80 + GSH 1 or GSH 2 and I 60 + GSH 1 or GSH 2 elevated the IUE and exceeded the full irrigation without GSH application (I 100 ) treatment by 38% and 37%, and 33% and 28%, respectively. Drought stress increased proline and total soluble sugars content while decreased the total free amino acids content. However, GSH-supplemented drought-stressed plants mediated further increases in all analyzed osmolytes contents. Exogenous GSH enhanced the common bean antioxidative machinery, being promoted the glutathione and ascorbic acid content as well as up-regulated the activity of superoxide dismutase, catalase, ascorbate peroxidase, and glutathione peroxidase. These findings demonstrate the efficacy of exogenous GSH in alleviating water deficit in bean plants cultivated in salty soil.
Competing Interests: Magdi Abdelhamid & Othmane Merah are Academic Editors for PeerJ.
(©2023 Abd El Mageed et al.)
Databáze: MEDLINE
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