Tide driven microbial dynamics through virus-host interactions in the estuarine ecosystem

Chen, Xiaowei; Wei, Wei; Wang, Jianning; Li, Hongbo; Sun, Jia; Ma, Ruijie; Jiao, Nianzhi; Zhang, Rui

doi:10.1016/j.watres.2019.05.051

Cited by 50 publications

(39 citation statements)

References 85 publications

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“…Coastal ecosystems must cope with the interaction of both diurnal and tidal forcings, and the effects of these cycles are apparent on microbial scales. The tidal cycle influences virus-microbe interactions in estuaries (Chen et al 2019), bacterial abundances in salt marshes (Kirchman et al 1984), and even the presence of enterococci, fecal bacteria used as a metric for water quality, on beaches (Boehm & Weisberg 2005). Diurnal cycles, on the other hand, govern microbial nitrogen fixation on mangrove root systems (Toledo et al 1995), bacterial production rates in seagrass meadows (Moriarty & Pollard 1982), and coral reef microbial community changes (Kelly et al 2019, Weber & Apprill 2020.…”

Section: Introductionmentioning

confidence: 99%

“…The dynamics of microbial communities over short temporal scales (hours to days) are less studied. Studies from estuarine and coastal environments showed that tidal mixing and salinity are major drivers of microbial community structure (Lu et al 2015, Chen et al 2019, Neubauer et al 2019). In the case of open ocean environments with more stable physical and chemical features, observed changes in microbial communities may be due to biological interactions.…”

Section: Introductionmentioning

confidence: 99%

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Microbial and nutrient dynamics in mangrove, reef, and seagrass waters over tidal and diurnal time scales

Becker

Weber

Suca

et al. 2020

Aquat. Microb. Ecol.

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In coral reefs and adjacent seagrass meadow and mangrove environments, short temporal scales (i.e. tidal, diurnal) may have important influences on ecosystem processes and community structure, but these scales are rarely investigated. This study examines how tidal and diurnal forcings influence pelagic microorganisms and nutrient dynamics in 3 important and adjacent coastal biomes: mangroves, coral reefs, and seagrass meadows. We sampled for microbial (Bacteria and Archaea) community composition, cell abundances and environmental parameters at 9 coastal sites on St. John, US Virgin Islands that spanned 4 km in distance (4 coral reefs, 2 seagrass meadows and 3 mangrove locations within 2 larger bays). Eight samplings occurred over a 48 h period, capturing day and night microbial dynamics over 2 tidal cycles. The seagrass and reef biomes exhibited relatively consistent environmental conditions and microbial community structure but were dominated by shifts in picocyanobacterial abundances that were most likely attributed to diel dynamics. In contrast, mangrove ecosystems exhibited substantial daily shifts in environmental parameters, heterotrophic cell abundances and microbial community structure that were consistent with the tidal cycle. Differential abundance analysis of mangrove-associated microorganisms revealed enrichment of pelagic oligotrophic taxa during high tide and enrichment of putative sediment-associated microbes during low tide. Our study underpins the importance of tidal and diurnal time scales in structuring coastal microbial and nutrient dynamics, with diel and tidal cycles contributing to a highly dynamic microbial environment in mangroves, and time of day likely contributing to microbial dynamics in seagrass and reef biomes.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microbial and nutrient dynamics in mangrove, reef, and seagrass waters over tidal and diurnal time scales

Becker

Weber

Suca

et al. 2020

Aquat. Microb. Ecol.

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show abstract

“…Virus-host interaction dynamics revealed by epicPCR shed light on the individual interactions that contribute to viral production and bacterial mortality over time and with changing conditions. Previous studies revealed differences in viral productivity and bacterial mortality associated with spring and neap tides 8 . While our study did not quantify viral productivity or bacterial mortality, we did find that interactions between Rhodoluna and Clade II and Clade III phages were associated with salinity changes.…”

Section: Discussionmentioning

confidence: 98%

“…Bulk measurements implicate viruses as major contributors to daily bacterial mortality (20-40% in surface waters 4 ), carbon export 5 , and biogeochemical cycling 6 . In the Chesapeake Bay, the largest estuary in the United States, high viral production rates (~8 x 10 6 viruses ml -1 h -1 ) suggest up to 20% of the bacterial community can be lysed by viruses per hour, 7 although environmental factors, such as tidal mixing of fresh and marine water, could modulate viral production and viral-mediated mortality, as observed in other ecosystems 8 . These community-level impacts are the aggregate of a myriad of individual virus-host infections that result in an estimated 10 23 infections per second in the oceans worldwide 9 .…”

Section: Introductionmentioning

confidence: 98%

Capturingin situVirus-Host Range and Interaction Dynamics through Gene Fusion with epicPCR

Sakowski

Arora‐Williams

Tian

et al. 2020

Preprint

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Viruses impact microbial diversity, phenotype, and gene flow through virus-host interactions that in turn alter ecology and biogeochemistry. Though metagenomics surveys are rapidly cataloging viral diversity, capturing specific virus-host interactions in situ would identify hosts for novel viruses and reveal influential ecological or environmental factors. We leveraged metagenomics and a high-throughput, cultivation-independent gene fusion technique (epicPCR) to investigate viral diversity and virus-host interactions over time in a critical estuarine environment, the Chesapeake Bay. EpicPCR captured in situ virus-host interactions for viral clades with no closely related database representatives. Abundant freshwater Actinobacteria lineages were the most common hosts for these poorly characterized viruses, and observed viral interactions with one abundant Actinobacterial population (Rhodoluna) were correlated with environmental factors. Tracking virus-host interaction dynamics also revealed ecological differences between multi-host (generalist) and single-host (specialist) viruses. Generalist viruses had significantly longer periods with observed virus-host interactions but specialist viruses were observed interacting with hosts at lower minimum abundances, suggesting more efficient interactions. Together, these observations reveal ecological differences between generalist and specialist viruses that provide insight into evolutionary trade-offs. Capturing in situ interactions with epicPCR revealed environmental and ecological factors that shape virus-host interactions, highlighting epicPCR as a scalable new tool in viral ecology.

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“…Notably, the Hong Kong oyster (Crassostrea hongkongensis) is an edible bivalve species endemic to estuarine and coastal regions of the South China Sea, with an aquacultural history of more than 700 years (28). As a sessile bivalve species, C. hongkongensis lives by filtering seawater and is prone to pathogenic infections due to prevalence of microbes in the estuarine regions (29). Therefore, the oyster has evolved an efficient host defense system with high phagocytic activities to safeguard its survival within ecologically dynamic environments (30).…”

Section: Introductionmentioning

confidence: 99%

Phagocyte Transcriptomic Analysis Reveals Focal Adhesion Kinase (FAK) and Heparan Sulfate Proteoglycans (HSPGs) as Major Regulators in Anti-bacterial Defense of Crassostrea hongkongensis

et al. 2020

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Tide driven microbial dynamics through virus-host interactions in the estuarine ecosystem

Cited by 50 publications

References 85 publications

Microbial and nutrient dynamics in mangrove, reef, and seagrass waters over tidal and diurnal time scales

Microbial and nutrient dynamics in mangrove, reef, and seagrass waters over tidal and diurnal time scales

Capturingin situVirus-Host Range and Interaction Dynamics through Gene Fusion with epicPCR

Phagocyte Transcriptomic Analysis Reveals Focal Adhesion Kinase (FAK) and Heparan Sulfate Proteoglycans (HSPGs) as Major Regulators in Anti-bacterial Defense of Crassostrea hongkongensis

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