Journal
MOLECULES
Volume 16, Issue 2, Pages 1409-1417Publisher
MDPI AG
DOI: 10.3390/molecules16021409
Keywords
sulfur transformation; PCR-DGGE; copper availability; rice rhizosphere
Funding
- Natural Science Foundation of China [40601086]
- Fundamental Research Funds for the Central Universities
- Zhejiang Provincial Office of Education [G20060323]
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The role of sulfur on the availability of Cu and the bacterial community in rice rhizospheres was investigated by pot experiments. With sulfur addition, pH in rhizosphere soil decreased and Mg(NO3)(2) extractable Cu increased significantly. The bacterial community composition also changed with sulfur addition. Some specific clones having high similarity to Thiobacillus, which indicated that sulfur oxidation in the rice rhizosphere could increase the availability of Cu. These results suggested that sulfur source which could provide substrate to sulfur oxidizing bacteria and enhance the availability of Cu was not a suitable sulfur fertilizer for Cu polluted soil.
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