Proceedings of the Korean Society of Plant Pathology Conference (한국식물병리학회:학술대회논문집)
- 2003.10a
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- Pages.105.1-105
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- 2003
Growth of Phaseolus mungo under chromium stress - influence of chromate reducing bacteria
- M. Rajkumar (Faculty of Bioresources Science, Chonbuk National university) ;
- Na, R.gendran (Centre for Environmental Studies, Anna University) ;
- Lee, Kui-Jae (Faculty of Bioresources Science, Chonbuk National university) ;
- Lee, Wang-Hyu (Faculty of Bioresources Science, Chonbuk National university)
- Published : 2003.10.01
Abstract
The Plant growth Promoting rhizobacteria (PGPR), Pseudomonas sp. (A3) and Bacillus sp. (AT33) were isolated from the rhizosphere of Amaranthus blitum collected from soil contaminated with chromium. Both bacterial strains quantitatively reduced hexavalent chromium to trivalent chromium. Pseudomonas sp. broughter greater conversion of Cr6+ in the medium (100％) as compared to Bacillus sp.(62％). Phaseolus mungo seeds inoculated with Pseudomonas sp. or Bacillus sp. were grown under different concentration of chromium. The monitored parameters included elongation of shoot and root, fresh weight, dry weight and concentration of chromium in the shoot and root systems. As compared to non inoculated seedlings those inoculated with A3 and AT33 exhibited better growth.
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