Applications of Beneficial Microbe in Arid and Semiarid Agroecosystem: IAA-Producing Bacteria

  • Mohammad Javad ZareaEmail author


Plant harbors large population of various microorganisms due to release of root substance that favors bacterium proliferation. Volume of the soil that is influenced by the roots of plants is known as rhizosphere. Rhizosphere is occupied by distinct bacterial population that interrelate with each other and plant roots. There are several bacterial communities which influence the development and growth of plants through several mechanisms, including phytohormone production and nutrients mobilization. Interest in the application of bacteria of the plant growth encouraging rhizobia groups has been increased. Many authors have reviewed the important roles of PGPR in augmenting the yield and the growth of crops. Therefore, beneficial or application of plant growth enhancing rhizobacteria (PGER) in crop production is not the aim of this chapter. Arid and semiarid agricultural lands are characterized by drought stress; therefore, in such lands, plant does not grow well. Application of beneficial microbes in such lands helps in mitigation of drought as well as other unwanted abiotic and biotic stresses. The main goal of this chapter is to focus on the role of IAA-producing bacteria and their role in plant growth promotion as well as drought tolerance of crops.


Microbes Arid Semiarid Agroecosystem Phytohormone 


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© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Department of Agronomy and Plant breeding, Faculty of AgricultureIlam UniversityIlamIran

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