Production of the phytohormone Indole Acetic acid by some rhizospheric bacteria associated with the Egyptian flora | ||
| Journal of Basic and Environmental Sciences | ||
| Volume 10, Issue 4, October 2023, Pages 130-137 PDF (213.5 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jbes.2023.372265 | ||
| Authors | ||
| Ghada E. Dawwam* 1; Manar H. Fathy1; Tamer M. Emam2; Mohamed O. AbdelMonem3; Radwan Khalil3; Aziza Nagah3 | ||
| 1Botany and Microbiology Department, Faculty of Science, Benha University, Benha, 13518, Egypt. | ||
| 2Soil Fertility and Microbiology Department, Water Resources and Desert Soils Division, Desert Research Center, El-Matariya, Cairo 4540031, Egypt. | ||
| 3Botany and Microbiology Department, Faculty of Science, Benha University, Benha, 13518, Egypt | ||
| Abstract | ||
| The phytohormone indole acetic acid (IAA) is synthesized both by plants and microorganisms. This phytohormone performs its activity on plant growth and development by regulating cell elongation, enlargement, and division. The production of IAA is one of the essential criteria that discriminate the plant growth-promoting microorganisms. The present work involves the isolation of bacteria from the rhizosphere of different localities of the Egyptian flora and screening these isolates for the production of Indole acetic acid. Thirty-three bacterial isolates were obtained from clay and sandy soils. 67% of bacterial isolates were obtained from clay soil while 33% were obtained from sandy soil. The isolated bacteria produced a high amount of IAA in the range of 6.36 and 62.59 μg /ml. Thus, these bacteria are recommended as sustainable biofertilizers for their high production of IAA. | ||
| Keywords | ||
| Rhizobacteria; Indole; 3; acetic acid; Salkowski assay; clay soil; sandy soil | ||
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