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- Title
Rhizosphere Competent Pseudomonas aeruginosa GRC<sub>1 </sub>Produces Characteristic Siderophore and Enhances Growth of Indian Mustard ( Brassica campestris).
- Authors
Pandey, Piyush; Kang, Sun C.; Gupta, Chandra P.; Maheshwari, Dinesh K.
- Abstract
Pseudomonas aeruginosa GRC1, an isolate of potato rhizosphere, was known to have several plant growth–promoting activities, including production of phytohormone and antibiotic substance. The isolate was found to have prolific production ability of hydroxamate siderophore in iron-deficient conditions. The siderophore of GRC1 was purified and characterized. The purified siderophore appeared to be of pyoverdin type with typical amino acid composition. In field trials, P. aeruginosa GRC1 enhanced the growth of Brassica campestris var Pusa Gold (Indian mustard). Significant increase in root and shoot weight, length, grain yield per plant, and total grain yield was recorded. Root colonization was studied with Tn5-induced streptomycin-resistant transconjugants of spontaneous rifampicin-resistant GRC1 (designated GRC) after different durations. The strain was significantly rhizopheric competent and stabilized in the rhizosphere, without disturbing the normal indigenous bacterial population.
- Subjects
PSEUDOMONAS aeruginosa; PSEUDOMONAS; PLANT growth; PLANT hormones; ANTIBIOTICS; AMINO acids; ORGANIC acids
- Publication
Current Microbiology, 2005, Vol 51, Issue 5, p303
- ISSN
0343-8651
- Publication type
Article
- DOI
10.1007/s00284-005-0014-1