Analyses of the vertical and temporal distributions of sulfate-reducing bacteria in sediments of Lake Erhai, southwest China

作者：Zhang W; Wang Z L^*; Wang M Y

来源：Research Journal of Chemistry and Environment, 2012, 16(3): 44-51.

• Sulfate-reducing bacteria Vertical and temporal distribution
• SRB groups and quantity
• PCR
• FISH

The distribution of sulfate-reducing bacteria (SRB) in the sediments of Lake Erhai was analyzed based on evaluation of the presence and quantity of six main groups of SRB in sediments collected during April and October. The results showed that four SRB groups (Desulfotomaculum, Desulfobulbus, Desulfoc-occus-Desulfonema-Desulfosarcina and Desulfovibrio - Desulfomicrobium) were present in October, while only three groups (Desulfotomaculum, Desulfobulbus and Desulfococcus-Desulfonema-Desulfosarcina) were detected in April. The distribution of each SRB group was wider in sediments collected in October than in April, they were mainly found in the upper sediments and they showed a greater overall presence and quantity in October than in April. These findings indicated that the environmental conditions in October were more suitable for SRBs. Furthermore the results of this study suggested that Desulfovibrio-Desulfomicrobium were inactive in the sediments in April.

• 出版日期2012-9
• 单位天津师范大学