Bioproduction of indoleacetic acid by a Rhizobium sp. from the root nodules of Desmodium gangeticum DC.
The Rhizobium sp. isolated from the root nodules of Desmodium gangeticum DC. produced a high amount of indole acetic acid (IAA) from tryptophan in culture. For maximum IAA production, the bacteria preferred L-isomer over DL- or D-isomer of tryptophan. The production of IAA could be increased up to 37% over yeast extract ribose medium by supplementing the medium with ZnSO4 (0.1 microgram/ml), asparagine (0.1%) and nicotinic acid (0.1 microgram/ml). The possible relationship between the rhizobial IAA production and legume-rhizobia symbiosis is discussed.
Bhattacharyya
R N
RN
Department of Botany, University of Burdwan, Golapbag, India.
Basu
P S
PS
D007887:Fabaceae / Q000382:microbiology*; D007210:Indoleacetic Acids / Q000378:metabolism*; D010946:Plants, Medicinal; D012231:Rhizobium / Q000254:growth & development / Q000378:metabolism*
D007210:Indoleacetic Acids; C030737:indoleacetic acid