γ蛋白杆菌
Β-变形菌
微生物种群生物学
α蛋白细菌
细胞吞噬
污染
微生物
黄杆菌
生物
群落结构
古细菌
相对物种丰度
生态学
环境化学
环境科学
细菌
丰度(生态学)
放线菌门
化学
假单胞菌
遗传学
16S核糖体RNA
作者
Hana Mlejnková,Kateřina Sovová
摘要
We studied the differences in a microbial community structure with respect to the water pollution level and seasonal changes. The determination of phylogenetic groups of Bacteria and Archaea was done using fluorescent in situ hybridization (FISH). The total number of microorganisms was determined by direct counting of DAPI (4′,6-diamidino-2-phenylindole) stained samples using a fluorescence microscope. Our results showed that the microbial community structure was significantly dependent on the level of water pollution, both in absolute microbial counts and in relative abundance of phylogenetic groups. For surface water with anthropogenic pollution, the microbial community with significant proportion of Betaproteobacteria and Cytophaga-Flavobacterium was characteristic. Gammaproteobacteria were significant in municipal waste water. In microbial communities with low numbers of microorganisms (e.g. non-polluted water and some industrial waste water) represented the significant component groups Alphaproteobacteria and Archaea. The impact of seasonal changes on the microbial distribution was not significant.
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