Production of the phytohormone Indole Acetic acid by some rhizospheric bacteria associated with the Egyptian flora
Dawwam, G., Fathy, M., Emam, T., AbdelMonem, M., Khalil, R., Nagah, A. (2023). Production of the phytohormone Indole Acetic acid by some rhizospheric bacteria associated with the Egyptian flora. EKB Journal Management System, 10(4), 130-137. doi: 10.21608/jbes.2023.372265
Ghada E. Dawwam; Manar H. Fathy; Tamer M. Emam; Mohamed O. AbdelMonem; Radwan Khalil; Aziza Nagah. "Production of the phytohormone Indole Acetic acid by some rhizospheric bacteria associated with the Egyptian flora". EKB Journal Management System, 10, 4, 2023, 130-137. doi: 10.21608/jbes.2023.372265
Dawwam, G., Fathy, M., Emam, T., AbdelMonem, M., Khalil, R., Nagah, A. (2023). 'Production of the phytohormone Indole Acetic acid by some rhizospheric bacteria associated with the Egyptian flora', EKB Journal Management System, 10(4), pp. 130-137. doi: 10.21608/jbes.2023.372265
Dawwam, G., Fathy, M., Emam, T., AbdelMonem, M., Khalil, R., Nagah, A. Production of the phytohormone Indole Acetic acid by some rhizospheric bacteria associated with the Egyptian flora. EKB Journal Management System, 2023; 10(4): 130-137. doi: 10.21608/jbes.2023.372265

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, Page 130-137  XML PDF (213.5 K)
Document Type: Original Article
DOI: 10.21608/jbes.2023.372265
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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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