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Review
. 2020 Dec;27(12):3634-3640.
doi: 10.1016/j.sjbs.2020.08.004. Epub 2020 Aug 8.

Azotobacter: A potential bio-fertilizer for soil and plant health management

Aisha Sumbul  1 , Rizwan Ali Ansari  1 , Rose Rizvi  1 , Irshad Mahmood  1
Affiliations
Review

Azotobacter: A potential bio-fertilizer for soil and plant health management

Aisha Sumbul et al. Saudi J Biol Sci. 2020 Dec.

Abstract

Stressor (biotic as well as abiotic) generally hijack the plant growth and yield characters in hostile environment leading to poor germination of the plants and yield. Among the plant growth promoting rhizobacteria, Azotobacter spp. (Gram-negative prokaryote) are considered to improve the plant health. Various mechanisms are implicated behind improved plant health in Azotobacter spp. inoculated plants. For example, acceleration of phytohormone like Indole-3-Acetic Acid production, obviation of various stressors, nitrogen fixation, pesticides and oil globules degradation, heavy metals metabolization, etc. are the key characteristics of Azotobacter spp. action. In addition, application of this bacteria has also become helpful in the reclamation of soil suggesting to be a putative agent which can be used in the transformation of virgin land to fertile one. Application of pesticides of chemical origin are being put on suspension mode as the related awareness program is still on. As far as the limitations of this microbe is concerned, commercial level formulations availability is still a great menace. Present review has been aimed to appraise the researchers pertaining to utility of Azotobacter spp. in the amelioration of plant health in sustainable agroecosystem. The article has been written with the target to gather maximum information into single pot so that it could reach to the dedicated researchers.

Keywords: Agroecosystem; PGPR and phytohormone; Siderophores; Stressor.

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Conflict of interest statement

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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