A review of the effects of drought stress on plants and some effective strategies in crop management

Subject Areas : Tension

Amin Fathi ¹ , Abbas Maleki ² , Rahim Naseri ³

1 - Ph.D. of Agronomy, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
2 - Assist. Prof., Dept. of Agronomy and Plant Breeding, Islamic Azad University Branch of Ilam, Ilam
3 - 1. Department of Plant Production Technology, Dehloran Faculty of Agriculture and Engineering, Ilam University, Ilam, Iran.

Received: 2021-11-05 Accepted : 2022-02-02 Published : 2024-07-19

Keywords: Yield, carbon dioxide, Salicylic acid, Photosynthesis, growth-promoting bacteria,

Abstract :

The world is facing major challenges such as climate change, floods, population growth and a variety of environmental stress. All of this can directly or indirectly affect agriculture. Drought is one of the most important abiotic stresses and a limiting factor in the successful production of plant products around the world and has adverse effects on the morphological and physiological activities of plants. Adaptation to the effects of drought stress is the result of changes in growth, physiological and biochemical mechanisms that cause changes in growth rate, stomatal conductance, photosynthetic process and enzymatic activities of plants. Drought stress disrupts photosynthesis in plants and gradually reduces carbon dioxide uptake due to closed pores. In addition, drought stress affects the stability of cell membranes and disrupts plant water relationships by reducing water use efficiency. Plants adopt different mechanisms to deal with these conditions. Proper management is very important to prevent the adverse effects of drought stress. Today, researchers are trying to reduce the effects of drought stress by spraying with hormones or hormone-like, growth-promoting bacteria, mycorrhizae, and resistant cultivars. In this paper, we investigate the effects of drought stress on some morphological, physiological and biochemical characteristics of plants. Also, some crop management methods have been proposed to overcome the destructive effects of drought stress.