Microbial Capacity for Auxin Biosynthesis: A Comparative Exploration


  • Dr. Rajesh Sharma Department of Plant Biology, Indian Institute of Science, Bangalore, India
  • Prof. Fatima Hassan Department of Wildlife Management, University of Veterinary and Animal Sciences, Lahore, Pakistan
  • Dr. Ahmed Khan Institute of Animal Husbandry, Sindh Agriculture University, Tandojam, Pakistan


This study investigates the auxin biosynthesis potential of selected microbial species, namely Bacillus, Azotobacter, Pseudomonas, Azospirillum, and Rhizobium species. Qualitative assessments using the Salkowski reagent confirmed the capability of these strains to yield indole-3-acetic acid (IAA), a key plant growth regulator. Quantitative analysis revealed significant variations in auxin production, with Azotobacter demonstrating the highest IAA levels, followed by Bacillus, Rhizobium, Pseudomonas and Azospirillum exhibited intermediate IAA production. The findings underscore the strain-specific nature of auxin production within microbial genera, emphasizing the importance of precise strain selection for potential applications in sustainable agriculture. Azotobacter, with its superior auxin production, emerges as a promising candidate for bioinoculant development. These results contribute valuable knowledge to the understanding of plant-microbe interactions and lay the foundation for further research into tailored microbial applications for enhanced crop growth and productivity.




How to Cite

Dr. Rajesh Sharma, Prof. Fatima Hassan, & Dr. Ahmed Khan. (2023). Microbial Capacity for Auxin Biosynthesis: A Comparative Exploration. Indus Journal of Animal and Plant Sciences, 1(02), 34–37. Retrieved from https://induspublishers.com/IJAPS/article/view/70