16S rRNA Amplicon Sequencing of Sediment Bacterial Communities in an Oyster Farm in Rhode Island

Stevens, Joshua T. E.; Fulweiler, Robinson W.; Chowdhury, Priyanka

doi:10.1128/mra.01074-19

Cited by 7 publications

(2 citation statements)

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“…Diversity of the benthic microbial community in Shenzhen Bay significantly increases when oysters are present, as has been reported previously [17,47], and Proteobacteria has been identified as a dominant phylum [48]. In our study, Chloroflexi was also among the most abundant phyla, after Proteobacteria.…”

Section: Discussionsupporting

confidence: 87%

“…Previously, Chloroflexi have been reported as keystone species in aquatic systems and sediments [55]. Proteobacteria were dominant in the sediment of an oyster farming area due to their abilities to regenerate nutrients [48]. Among Proteobacteria, Deltaproteobacteria (Desulfobacterales, especially) and Gammaproteobacteria were reported to be in abundance in polluted coastal areas and play an important role in network functions, according to a study focusing on an urbanized coastal estuary [56].…”

Section: Discussionmentioning

confidence: 99%

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Assembly of a Benthic Microbial Community in a Eutrophic Bay with a Long History of Oyster Culturing

Song

et al. 2021

Microorganisms

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The introduction of oysters to a waterbody is an efficient method for decreasing levels of eutrophication. Oysters affect sedimental environments and benthic microbes via their roles in nutrient cycling. However, little is known about how long-term oyster culturing affects benthic microbial community assembly. In the present study, top and bottom sediments from an oyster-culture area and non-culture area, in a eutrophic bay with a long history of oyster culturing, were obtained for environmental parameter measurement and microbe identification. Deterministic and stochastic processes in microbial community assembly were assessed. In particular, keystone species identification through network analysis was combined with measured environmental parameters to determine the factors related to community assembly processes. Our results suggest that oyster culturing relates to greater variation in both biological and non-biological sediment profiles. In benthic communities, Proteobacteria and Chloroflexi were the most abundant phyla, and community compositions were significantly different between sample groups. We also found that community assembly was more affected by deterministic factors than stochastic ones, when oysters were present. Moisture, or water content, and pH were identified as affecting deterministic and stochastic processes, respectively, but only water content was a driver associated with oyster culturing. Additionally, although keystone species presented a similar pattern of composition to peripheral species, they responded to their environments differently. Furthermore, model selection, fitting keystone species to community assembly processes, indicates their role in shaping microbial communities.

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Section: Discussionsupporting

confidence: 87%