期刊
MICROBIAL ECOLOGY
卷 78, 期 2, 页码 313-323出版社
SPRINGER
DOI: 10.1007/s00248-019-01322-w
关键词
River; Bacteria; Model community; Growth rate; Interactions
资金
- Fonds National de la Recherche Scientifique FRS-FNRS [T.1037.14]
The dynamic of a community of 20 bacterial strains isolated from river water was followed in R2 broth and in autoclaved river water medium for 27days in batch experiments. At an early stage of incubation, a fast-growing specialist strain, Acinetobater sp., dominated the community in both media. Later on, the community composition in both media diverged but was highly reproducible across replicates. In R2, several strains previously reported to degrade multiple simple carbon sources prevailed. In autoclaved river water, the community was more even and became dominated by several strains growing faster or exclusively in that medium. Those strains have been reported in the literature to degrade complex compounds. Their growth rate in the community was 1.5- to 7-fold greater than that observed in monoculture. Furthermore, those strains developed simultaneously in the community. Together, our results suggest the existence of cooperative interactions within the community incubated in autoclaved river water.
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