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Volume 5 (2005), Pages 501-509
Research Article

Characterization of Pseudomonas Species Isolated from the Rhizosphere of Plants Grown in Serozem Soil, Semi-Arid Region of Uzbekistan

Center of Agroecology, University of Agriculture, Tashkent 700128, Uzbekistan

Received 2 February 2005; Revised 5 June 2005; Accepted 12 June 2005

Copyright © 2005 Dilfuza Egamberdiyeva.


Collections of native Pseudomonas spp. are kept at the NCAM of Uzbekistan. Some of those organisms were isolated from the rhizosphere of cotton, wheat, corn, melon, alfalfa, and tomato grown in field locations within a semi-arid region of Uzbekistan. Strains used for this study were Pseudomonas alcaligenes, P. aurantiaca, P. aureofaciens, P. denitrificans, P. mendocina, P. rathonis, and P. stutzeri. Some of the pseudomonads have been characterized in this report. These strains produced enzymes, phytohormone auxin (IAA), and were antagonist against plant pathogenic fungi in in vitro experiments. Most of the strains were salt tolerant and temperature resistant. Some of the Pseudomonas spp. isolated in this study have been found to increase the growth of wheat, corn, and tomato in pot experiments.