Indole acetic acid production by a Rhizobium species from root nodules of a leguminous shrub, Cajanus cajan.
A Rhizobium sp. isolated from the root nodules of a leguminous pulse-yielding shrub, Cajanus cajan, was found to produce high amounts (99.7 microg/ml) of indole acetic acid (IAA) during growth in basal medium supplemented with L-tryptophan. The Rhizobium sp. was a fast growing species which reached its stationary phase at 28 h. The IAA production could be increased upto 653.3% over control by supplementing the carbon-free incubation medium with glucose (5 g/l), NiCl2 (10 microg/ml) and glutamic acid (0.5 g/l). The possible role of rhizobial IAA on the rhizobia-legume symbiosis is discussed.
Datta
C
C
Department of Botany, Burdwan University, West Bengal, India.
Basu
P S
PS
D007887:Fabaceae / Q000382:microbiology*; D007210:Indoleacetic Acids / Q000378:metabolism*; D010937:Plant Growth Regulators / Q000378:metabolism*; D018517:Plant Roots / Q000378:metabolism / Q000382:microbiology; D010946:Plants, Medicinal; D012231:Rhizobium / Q000254:growth & development / Q000378:metabolism*; D013559:Symbiosis
D007210:Indoleacetic Acids; D010937:Plant Growth Regulators; C030737:indoleacetic acid