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Marine and giant viruses as indicators of a marine microbial community in a riverine system

机译：海洋和巨型病毒可作为河流系统中海洋微生物群落的指标

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Abstract Viral communities are important for ecosystem function as they are involved in critical biogeochemical cycles and controlling host abundance. This study investigates riverine viral communities around a small rural town that influences local water inputs. Myoviridae, Siphoviridae, Phycodnaviridae, Mimiviridae, Herpesviridae, and Podoviridae were the most abundant families. Viral species upstream and downstream of the town were similar, with Synechoccocus phage , salinus , Prochlorococcus phage , Mimivirus A, and Human herpes 6A virus most abundant, contributing to 4.9?￠????38.2% of average abundance within the metagenomic profiles, with Synechococcus and Prochlorococcus present in metagenomes as the expected hosts for the phage. Overall, the majority of abundant viral species were or were most similar to those of marine origin. At over 60 km to the river mouth, the presence of marine communities provides some support for the Baas-Becking hypothesis ?￠???? everything is everywhere , but, the environment selects .?￠???? We conclude marine microbial species may occur more frequently in freshwater systems than previously assumed, and hence may play important roles in some freshwater ecosystems within tens to a hundred kilometers from the sea.
机译：摘要病毒群落参与关键的生物地球化学循环和控制宿主丰度，因此对于生态系统功能至关重要。这项研究调查了一个农村小镇周围影响当地水输入的河流病毒群落。肌病毒科，硅病毒科，藻科，拟病毒科，疱疹病毒科和足病毒科是最丰富的科。该镇上游和下游的病毒种类相似，其中Synechoccocus噬菌体，盐，Prochlorococcus噬菌体，Mimivirus A和Human Herpes 6A病毒最为丰富，在宏基因组学分析中占平均平均丰度的4.9％，占38.2％，在基因组中存在Synechococcus和Prochlorococcus，它们是噬菌体的预期宿主。总体而言，大多数丰富的病毒种类与海洋来源的病毒种类非常相似。在距河口60多公里处，海洋社区的存在为Baas-Becking假说提供了一定的支持。到处都是，但是，环境选择了。我们得出的结论是，海洋微生物物种在淡水系统中的发生可能比以前设想的要频繁，因此可能在距大海数十到一百公里的某些淡水生态系统中发挥重要作用。

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