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Jasmonic acid priming augments antioxidant defense and photosynthesis in soybean to alleviate combined heat and drought stress effects.

Authors
  • Rahman, Md Mezanur1
  • Mostofa, Mohammad Golam2
  • Keya, Sanjida Sultana1
  • Ghosh, Protik Kumar3
  • Abdelrahman, Mostafa1
  • Anik, Touhidur Rahman1
  • Gupta, Aarti4
  • Tran, Lam-Son Phan5
  • 1 Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock, TX, 79409, USA.
  • 2 Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, MI, 48824, USA. Electronic address: [email protected].
  • 3 Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh. , (Bangladesh)
  • 4 Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock, TX, 79409, USA. Electronic address: [email protected].
  • 5 Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock, TX, 79409, USA. Electronic address: [email protected].
Type
Published Article
Journal
Plant physiology and biochemistry : PPB
Publication Date
Jan 01, 2024
Volume
206
Pages
108193–108193
Identifiers
DOI: 10.1016/j.plaphy.2023.108193
PMID: 38029615
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

In the aftermaths of global warming, plants are more frequently exposed to the combination of heat stress and drought in natural conditions. Jasmonic acid (JA) has been known to modulate numerous plant adaptive responses to diverse environmental stresses. However, the function of JA in regulating plant responses to the combined effects of heat and drought remains underexplored. In this study, we elucidated the functions of JA in enhancing the combined heat and drought tolerance of soybean (Glycine max). Our results showed that priming with JA improved plant biomass, photosynthetic efficiency and leaf relative water content, which all together contributed to the improved performance of soybean plants under single and combined heat and drought conditions. Exposure to single and combined heat and drought conditions caused oxidative damage in soybean leaves. Priming soybean plants, which were exposed to single and combined heat and drought conditions, with JA, on the other hand, substantially quenched the reactive oxygen species-induced oxidative burden possibly by bolstering their antioxidant defense system. Together, our findings provide direct evidence of the JA-mediated protective mechanisms in maintaining the optimal photosynthetic rate and plant performance under combined heat and drought conditions. Copyright © 2023 Elsevier Masson SAS. All rights reserved.

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