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Chromium-resistant bacteria and cyanobacteria: impact on Cr(VI) reduction potential and plant growth.
- Source :
-
Journal of Industrial Microbiology & Biotechnology . Nov2005, Vol. 32 Issue 11/12, p615-621. 7p. 1 Black and White Photograph, 3 Charts, 1 Graph. - Publication Year :
- 2005
-
Abstract
- Two chromium-resistant bacterial strains, Bacillus cereus S-6 and Ochrobactrum intermedium CrT-1, and two cyanobacterial strains, Oscillatoria sp. and Synechocystis sp., were used in this study. At initial chromate concentrations of 300 and 600 μg K2CrO4 mL−1, and an inoculum size of 9.6×107 cells mL−1, B. cereus S-6 completely reduced Cr(VI), while O. intermedium CrT-1 reduced Cr(VI) by 98% and 70%, respectively after 96 h. At 100 μg K2CrO4 mL−1, Synechocystis sp. MK(S) and Oscillatoria sp. BJ2 reduced 62.1% and 39.9% of Cr(VI), respectively, at 30°C and pH 8. Application of hexavalent chromate salts adversely affected wheat seedling growth and anatomical characters. However, bacterial inoculation alleviated the toxic effects, as reflected by significant improvements in growth as well as anatomical parameters. Cyanobacterial strains also led to some enhancement of various growth parameters in wheat seedlings. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13675435
- Volume :
- 32
- Issue :
- 11/12
- Database :
- Academic Search Index
- Journal :
- Journal of Industrial Microbiology & Biotechnology
- Publication Type :
- Academic Journal
- Accession number :
- 19029058
- Full Text :
- https://doi.org/10.1007/s10295-005-0241-2