Exogenous Application of Proline and Salicylic Acid can Mitigate the Injurious Impacts of Drought Stress on Barley Plants Associated with Physiological and Histological Characters

Khaled A. A. Abdelaal, Kotb A. Attia, Salman F. Alamery, Mohamed M. El-Afry, Abdelhalim I. Ghazy, Dalia S. Tantawy, Abdullah A. Al-Doss, El-Sayed E. El-Shawy, Abdelghafar M. Abu-Elsaoud and Yaser M. Hafez
Additional contact information
Khaled A. A. Abdelaal: EPCRS Excellence Center, Plant Pathology and Biotechnology Laboratory, Agricultural Botany Department, Faculty of Agriculture, Kafrelsheikh University, 33516 Kafr El-Sheikh, Egypt
Kotb A. Attia: Center of Excellence in Biotechnology Research, King Saud University, POX 2455-11451 Riyadh, Saudi Arabia
Salman F. Alamery: Center of Excellence in Biotechnology Research, King Saud University, POX 2455-11451 Riyadh, Saudi Arabia
Mohamed M. El-Afry: Agricultural Botany Department, Faculty of Agriculture, Kafrelsheikh University, 33516 Kafr El-Sheikh, Egypt
Abdelhalim I. Ghazy: Plant production Department, Food Science and Agricultural College, King Saud University, POX 2455-11451, Riyadh, Saudi Arabia
Dalia S. Tantawy: Agricultural Botany Department, Faculty of Agriculture, Kafrelsheikh University, 33516 Kafr El-Sheikh, Egypt
Abdullah A. Al-Doss: Plant production Department, Food Science and Agricultural College, King Saud University, POX 2455-11451, Riyadh, Saudi Arabia
El-Sayed E. El-Shawy: Barley Research Department, Field Crop Research Institute, Agriculture Research Centre, Giza 12619, Egypt
Abdelghafar M. Abu-Elsaoud: Department of Botany, Faculty of Science, Suez Canal University, 41522 Ismailia, Egypt
Yaser M. Hafez: EPCRS Excellence Center, Plant Pathology and Biotechnology Laboratory, Agricultural Botany Department, Faculty of Agriculture, Kafrelsheikh University, 33516 Kafr El-Sheikh, Egypt

Sustainability, 2020, vol. 12, issue 5, 1-15

Abstract: Barley is a very important crop worldwide and has good impact in preserving food security. The impacts of 10 mM proline and 0.5 mM salicylic acid were evaluated on water stressed barley plants ( Hordeum vulgare L. Giza126). Salicylic acid and proline treatments led to increased stem length, plant dry weights, chlorophyll concentration, relative water content, activity of antioxidant enzymes, and grain yield under drought stress. Nevertheless, lipid peroxidation, electrolyte leakage (EL), superoxide (O 2 ·− ), and hydrogen peroxide (H 2 O 2 ) significantly decreased in treated barley plants with proline and salicylic acid in both growing seasons as compared with drought treatment only, which caused significant decrease in stem length, plant dry weights, chlorophyll concentration, activity of antioxidant enzymes, as well as biological and grain yield. These results demonstrated the importance of salicylic acid and proline as tolerance inducers of drought stress in barley plants.

Keywords: Barley; drought; enzymes activity; electrolyte leakage; scanning electron microscope (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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