Phytohormones as Growth Regulators During Abiotic Stress Tolerance in Plants

Phytohormones as Growth Regulators During Abiotic Stress Tolerance in Plants · SciRah

^aDepartment of Agronomy, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Shaikh, Egypt
^bDepartment of Field Crops, Faculty of Agriculture, Siirt University, Siirt, Turkey
^cDepartment of Agronomy, Hajee Mohammad Danesh and Technology University, Dinajpur, Bangladesh
^dDepartment of Agronomy, Bangladesh Wheat and Maize Research Institute, Dinajpur, Bangladesh
^eDepartment of Agronomy, Faculty of Agriculture, University of Poonch, Rawalakot, Pakistan
^fDepartment of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari, Pakistan
^gDepartamento de Ciencias Naturales, Facultad de Ciencias Exactas, Instituto de Investigaciones Agrobiotecnológicas, Consejo Nacional de Investigaciones Científicas y Técnicas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Argentina
^hDepartment of Animal Science, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY, United States
ⁱInternational Rice Research Institute, Bangladesh Office, Dhaka, Bangladesh
^jDepartment of Agronomy, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
^kDepartment of Agronomy, The University of Agriculture, Peshawar, Pakistan
^lInstitute of Pure and Applied Biology, Bahauddin Zakariya University, Multan, Pakistan
^mDepartment of Agricultural Biology, Faculty of Agriculture, University of Ruhuna, Matara, Sri Lanka
ⁿDepartment of Soil Science, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan, Pakistan
^oCollege of Agronomy, Sichuan Agricultural University, Chengdu, China
^pVIT School of Agricultural Innovations and Advanced Learning (VAIAL), Vellore Institute of Technology (VIT), Vellore, India
^qDivision of Germplasm Evaluation, ICAR-National Bureau of Plant Genetic Resources (NBPGR), Pusa Campus, New Delhi, India
^rDepartment of Botany and Plant Physiology, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czechia
^sDepartment of Plant Physiology, Slovak University of Agriculture, Nitra, Slovakia
^tPlant Production Department, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
^uDepartment of Agronomy, The University of Haripur, Khyber Pakhtunkhwa, Pakistan
^vDepartment of Agriculture, Guru Nanak Dev University, Amritsar, India
^wKey Laboratory of Plant Nutrition and Fertilizer in South Region, Ministry of Agriculture, Institute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences, Guangzhou, China
^xDepartment of Soil Science and Pedology, Mendel University in Brno, Brno, Czechia
^yBotany Department, National Research Centre, Dokki, Egypt
✉Corresponding author

Abstract

Phytohormones (PHs) play crucial role in regulation of various physiological and biochemical processes that govern plant growth and yield under optimal and stress conditions. The interaction of these PHs is crucial for plant survival under stressful environments as they trigger signaling pathways. Hormonal cross regulation initiate a cascade of reactions which finely tune the physiological processes in plant architecture that help plant to grow under suboptimal growth conditions. Recently, various studies have highlighted the role of PHs such as abscisic acid, salicylic acid, ethylene, and jasmonates in the plant responses toward environmental stresses. The involvement of cytokinins, gibberellins, auxin, and relatively novel PHs such as strigolactones and brassinosteroids in plant growth and development has been documented under normal and stress conditions. The recent identification of the first plant melatonin receptor opened the door to this regulatory molecule being considered a new plant hormone. However, polyamines, which are not considered PHs, have been included in this chapter. Various microbes produce and secrete hormones which helped the plants in nutrient uptake such as N, P, and Fe. Exogenous use of such microbes help plants in correcting nutrient deficiency under abiotic stresses. This chapter focused on the recent developments in the knowledge related to PHs and their involvement in abiotic stresses of anticipation, signaling, cross-talk, and activation of response mechanisms. In view of role of hormones and capability of microbes in producing hormones, we propose the use of hormones and microbes as potential strategy for crop stress management.

TL;DRThis chapter focused on the recent developments in the knowledge related to PHs and their involvement in abiotic stresses of anticipation, signaling, cross-talk, and activation of response mechanisms and proposed the use of hormones and microbes as potential strategy for crop stress management. (Semantic Scholar)

Phytohormones as Growth Regulators During Abiotic Stress Tolerance in Plants

Abstract

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