Plant hormones and neurotransmitter interactions mediate antioxidant defenses under induced oxidative stress in plants

Due to global climate change, abiotic stresses are affecting plant growth, productivity, and the quality of cultivated crops. Stressful conditions disrupt physiological activities and suppress defensive mechanisms, resulting in stress-sensitive plants. Consequently, plants implement various endogeno...

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Published in:Frontiers in plant science Vol. 13; p. 961872
Main Authors: Raza, Ali, Salehi, Hajar, Rahman, Md Atikur, Zahid, Zainab, Madadkar Haghjou, Maryam, Najafi-Kakavand, Shiva, Charagh, Sidra, Osman, Hany S., Albaqami, Mohammed, Zhuang, Yuhui, Siddique, Kadambot H. M., Zhuang, Weijian
Format: Journal Article
Language:English
Published: Lausanne Frontiers Media SA 09.09.2022
Frontiers Media S.A
Subjects:
Abiotic stress
Abscisic acid
Acetic acid
Agricultural production
Antioxidants
Biosynthesis
Brassinosteroids
Climate change
CRISPR
Cytokinins
Defense mechanisms
Dopamine
Drought
drought stress
Food security
GABA
genetic engineering
Genome editing
Gibberellic acid
Global climate
Glutathione
Hormones
Indoleacetic acid
Jasmonic acid
melatonin
Metabolism
Neurotransmitters
Oxidative stress
Physiology
Phytohormones
Plant growth
Plant hormones
Plant Science
Plant stress
Plant tolerance
Productivity
Proteins
Reactive oxygen species
Salicylic acid
Salinity
Serotonin
Signal transduction
Solutes
Stress response
Transgenic plants
γ-Aminobutyric acid
ISSN:1664-462X, 1664-462X
Online Access:Get full text
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Summary:Due to global climate change, abiotic stresses are affecting plant growth, productivity, and the quality of cultivated crops. Stressful conditions disrupt physiological activities and suppress defensive mechanisms, resulting in stress-sensitive plants. Consequently, plants implement various endogenous strategies, including plant hormone biosynthesis (e.g., abscisic acid, jasmonic acid, salicylic acid, brassinosteroids, indole-3-acetic acid, cytokinins, ethylene, gibberellic acid, and strigolactones) to withstand stress conditions. Combined or single abiotic stress disrupts the normal transportation of solutes, causes electron leakage, and triggers reactive oxygen species (ROS) production, creating oxidative stress in plants. Several enzymatic and non-enzymatic defense systems marshal a plant’s antioxidant defenses. While stress responses and the protective role of the antioxidant defense system have been well-documented in recent investigations, the interrelationships among plant hormones, plant neurotransmitters (NTs, such as serotonin, melatonin, dopamine, acetylcholine, and γ-aminobutyric acid), and antioxidant defenses are not well explained. Thus, this review discusses recent advances in plant hormones, transgenic and metabolic developments, and the potential interaction of plant hormones with NTs in plant stress response and tolerance mechanisms. Furthermore, we discuss current challenges and future directions (transgenic breeding and genome editing) for metabolic improvement in plants using modern molecular tools. The interaction of plant hormones and NTs involved in regulating antioxidant defense systems, molecular hormone networks, and abiotic-induced oxidative stress tolerance in plants are also discussed.
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Edited by: Iftikhar Ali, Institute of Genetics and Developmental Biology (CAS), China
Reviewed by: Rajesh Singhal, Indian Grassland and Fodder Research Institute (ICAR), India; Abdullah Shalmani, Huazhong Agricultural University, China; Muhammad Jawad Umer, Quaid-i-Azam University, Pakistan
ORCID: Ali Raza, orcid.org/0000-0002-5120-2791; Hajar Salehi, orcid.org/0000-0001-8578-9423; Maryam Madadkar Haghjou, orcid.org/0000-0002-8007-5111; Shiva Najafi-Kakavand, orcid.org/0000-0002-4994-0533; Sidra Charagh, orcid.org/0000-0002-8077-7324; Hany S. Osman, orcid.org/0000-0002-7132-9511; Kadambot H. M. Siddique, orcid.org/0000-0001-6097-4235
This article was submitted to Plant Abiotic Stress, a section of the journal Frontiers in Plant Science
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2022.961872