Chapter

Bacterial Metabolites in Sustainable Agroecosystem

Volume 12 of the series Sustainable Development and Biodiversity pp 283-296

Date:

Microbial Phytohormones Have a Key Role in Mitigating the Salt-Induced Damages in Plants

  • Dilfuza EgamberdievaAffiliated withInstitute for Landscape Biogeochemistry, Leibniz Centre for Agricultural Landscape Research (ZALF) Email author 
  • , Abeer HashemAffiliated withDepartment of Botany and Microbiology, College of Science, King Saud University
  • , Abdulaziz A. AlqarawiAffiliated withDepartment of Plant Production, College of Food and Agricultural Sciences, King Saud University

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Abstract

Salinity is among the most challenging and devastating environmental problems which cause drastic decline in normal growth and developmental processes in crop plants. Plants have evolved several tolerance strategies to avert the damaging effects of high salinity. During the past few years most of the research is focused on increasing the salt tolerance of major food crops through the application of phytohormone producing beneficial microorganisms. During stress microbial phytohormones are having critical roles in modulating the physiology and biochemistry of plants so as to elicit a tolerance response to avoid stress. Induced plant growth and development of various plants by inoculation with PGPR having phytohormone, such as indole-3-acetic acid (IAA), cytokinins (CK), gibberelic acid (GA), salicylic acid (SA) and abscisic acid (ABA) producing ability, has been repeatedly documented. Present review discusses the role of phytohormones in ameliorating the salt stress-induced changes in plants and provides valuable insight into microbes evolved interactions with plant under hostile environmental conditions.

Keywords

Salt stress Phytohormones Plant growth promoting rhizobacteria