1. Ahmad F, Ahmad I, Khan MS (2005) Indole acetic acid production by the indigenous isolates of Azotobacter and fluorescent Pseudomonas in the presence and absence of Tryptophan. Turk J Biol 29:29–34
2. Arora S, Kaur K, Kaur S (2003) Indian medicinal plants as a reservoir of protective phytochemicals. J Environ Pathol Toxicol Oncol 1:295–300
3. Barea JM, Navorro E, Montoya E (1976) Production of plant growth regulators by rhizosphere phosphate solubilizing bacteria. J Appl Bacteriol 40:129–134
4. Beyeler M, Michaux P, Keel C, Haas D (1997) Effect of enhanced production of indole-3-acetic acid by the biological control agent Pseudomonas fluorescens CHAO on plant growth. In: Proceedings of the fourth international workshop on plant growth promoting rhizobacteria, Sapporo University, Sapporo, Japan, 18–22 October
5. Bric JM, Bostock RM, Silverstone SE (1991) Rapid in situ assay for indole acetic acid production by bacteria immobilized on nitrocellulose membrane. Appl Environ Microbiol 57:535–538