Production and Metabolism of Indole Acetic Acid in Root Nodules and Symbiont (Rhizobium undicola) Isolated from Root Nodule of Aquatic Medicinal Legume Neptunia oleracea Lour.

Table 3

IAA production by different isolates obtained from the nodules of N. oleracea. Results presented are the mean of 3 individual experimental setups.

Isolated strain	Host plant	Growth OD; at 540 nm	Production of IAA (μg/mL)
Rhizobium undicola strain N30	Neptunia oleracea Lour.
Rhizobium undicola strain N32	Neptunia oleracea Lour.
Rhizobium undicola strain N34	Neptunia oleracea Lour.
Rhizobium undicola strain N35	Neptunia oleracea Lour.
Rhizobium undicola strain N37	Neptunia oleracea Lour.

The bacteria were grown in L-tryptophan (0.1%) supplemented yeast extract medium for 24 h at 30 ± 2°C. The control set was devoid of any carbon sources.