IMARENABIO, Universidad de León, León 24071, Spain.
J Water Health. 2010 Mar;8(1):147-57. doi: 10.2166/wh.2009.123.
This work provides information about bacterial community structure in natural wastewater treatment systems treating different types of wastewater. The diversity and composition of bacterial communities associated with the rhizosphere of Typha latifolia and Salix atrocinerea were studied and compared among two different natural wastewater treatment systems, using the direct sequencing of the 16S ribosomal RNA codifying genes. Phylogenetic affiliations of the bacteria detected allowed us to define the main groups present in these particular ecosystems. Moreover, bacterial community structure was studied through two diversity indices. Ten identified and five non-identified phyla were found in the samples; the phylum Proteobacteria was the predominant group in the four ecosystems. The results showed a bacterial community dominated by beta-proteobacteria and a lower diversity value in the swine wastewater treatment system. The municipal wastewater treatment system presented a high diverse community in both macrophytes (Typha latifolia and Salix atrocinerea), with gamma-proteobacteria and alpha-proteobacteria, respectively, as the most abundant groups.
本研究提供了有关处理不同类型废水的天然废水处理系统中细菌群落结构的信息。通过对 16S 核糖体 RNA 编码基因的直接测序，研究并比较了两种不同天然废水处理系统中与香蒲和黑柳根际相关的细菌群落的多样性和组成。检测到的细菌的系统发育关系使我们能够确定这些特定生态系统中存在的主要菌群。此外，还通过两种多样性指数研究了细菌群落结构。在样本中发现了 10 个已鉴定和 5 个未鉴定的门；四个生态系统中优势菌群为变形菌门。结果表明，在猪场废水处理系统中，β-变形菌门占主导地位，且多样性值较低。在城市废水处理系统中，两种大型植物（香蒲和黑柳）的细菌群落具有很高的多样性，其中γ-变形菌门和α-变形菌门分别为最丰富的菌群。
