Journal of Basic and Environmental Sciences

Vol.10 No.4

Production of the phytohormone Indole Acetic acid by some rhizospheric bacteria associated with the Egyptian flora

Ghada E. DawwamManar H. Fathy, Tamer M. Emam, Mohamed O. Abdel-Monem, Radwan Khalil, Aziza Naga

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

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Journal of Basic and Environmental Sciences

J. Bas. Environ.Sci.

Abstract: