Polychaete Bioturbation Alters the Taxonomic Structure, Co-occurrence Network, and Functional Groups of Bacterial Communities in the Intertidal Flat

Fang, Jinghui; Jiang, Wenwen; Meng, Shan; He, Wei; Wang, Guodong; Guo, Enmian; Yan, Yisu

doi:10.1007/s00248-022-02036-2

Cited by 9 publications

(6 citation statements)

References 54 publications

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“…versatile degraders of macromolecules, especially carbohydrates (Gavriilidou et al, 2020;Chen et al, 2021). Similar key taxa appear to be associated with bioturbation in other habitats, such as the intertidal flats (Fang et al, 2023). These findings lead to the hypothesis that unique metabolic handoffs take place within the burrows, altering carbon, nitrogen and sulfur cycling.…”

mentioning

confidence: 79%

“…Our results suggest the presence of productive burrow communities, that cycle carbon, sulfur and nitrogen, potentially 465 through the turnover of hydrogen or other fermentation products. Examples of similar communities, comprising Bacteroidota degraders of macromolecules, sulfate reducers (Desulfobacterota and others), and chemotrophs (mainly Campylobacteria and Gammaproteobacteria) are common among a wide range of biomes, including burrowed sediments (Fang et al, 2023), epibionts of invertebrates in chemosynthetic habitats (Xu et al, 2022;Bai et al, 2021) and endosymbiotic communities in Idas mussels (Zvi-Kedem et al, 2023). The interactions between these organisms are not 470 limited to the exchange of key metabolites (Zoccarato et al, 2022).…”

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confidence: 99%

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Animal burrowing at cold seep ecotones boosts productivity by linking macromolecule turnover with chemosynthesis and nutrient cycling

Rubin-Blum,

Rahav,

Sisma-Ventura

et al. 2024

Preprint

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Abstract. Hydrocarbon seepage at the deep seafloor fuels flourishing chemosynthetic communities. These seeps impact the functionality of the benthic ecosystem beyond hotspots of gas emission, altering the abundance, diversity and activity of microbiota and fauna, and affecting geochemical processes. Yet, these chemosynthetic ecotones (chemotones) are far less explored than the foci of seepage. To better understand the functionality of chemotones, we: i) mapped seabed morphology at the periphery of gas seeps in the deep Eastern Mediterranean Sea, using video analyses and synthetic aperture sonar; ii) sampled chemotone sediments and described burrowing using computerized tomography; iii) explored nutrient concentrations; iv) quantified microbial abundance, activity and N2 fixation rates in selected samples and v) extracted DNA and explored microbial diversity and function using amplicon sequencing and metagenomics. Our results indicate that the gas seepage yields gradients of burrowing intensity at the seep ecotones, especially by the ghost shrimp Calliax lobata. This burrowing alters nitrogen and sulfur cycling through the activity of diverse microbes. Burrow walls form a unique habitat, where macromolecules are degraded by Bacterioida, and their fermentation products fuel sulfate reduction by Desulfobacterota and Nitrospirota. These in turn support chemosynthetic Campylobacterota and giant sulfur bacteria Thiomargarita, which can aid C. lobata nutrition. These interactions may support enhanced productivity at seep ecotones.

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confidence: 79%

mentioning

confidence: 99%

Animal burrowing at cold seep ecotones boosts productivity by linking macromolecule turnover with chemosynthesis and nutrient cycling

Rubin-Blum,

Rahav,

Sisma-Ventura

et al. 2024

Preprint

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“…The LDA scores were used to estimate the differently abundant taxa between groups. An analysis of the indicator species was performed in R (package “ggplot2”) and was conducted from the genus to phylum levels ( 73 , 74 ). The sequencing data of the epiphytic bacteria on S. thunbergii under different water loss conditions were functionally annotated using the FAPROTAX database, which is a tool that maps prokaryotic clades to establish metabolic or other ecologically relevant functions based on the current literature on cultured strains ( 75 , 76 ).…”

Section: Methodsmentioning

confidence: 99%

Effects of Water Loss Stress under Tidal Effects on the Epiphytic Bacterial Community of Sargassum thunbergii in the Intertidal Zone

Sun

Yang

et al. 2022

mSphere

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Periodic water loss caused by the tide is an important environmental factor that is faced by intertidal macroalgae, but the impact of periodic water loss on the epiphytic bacterial communities associated with macroalgae is still unknown. Through this study, we found that the diversity, the relative abundance of dominant taxa, the indicator species, and the abundance of the predicted functional genes in the epiphytic bacteria on S. thunbergii changed with the time of water loss.

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“…Proteobacteria have been detected in high abundance in estuarine intertidal sediments (37.5%) (Yi et al, 2020), coral reef sediments (65%) (Alvarez-Yela et al, 2019), mangrove surface sediments (>40%) (Huergo et al, 2018;Fiard et al, 2022), polar surface sediments (44-68%) (Thomas et al, 2020;Chaudhary et al, 2022), and marine sediments exposed to oil transport activities (45-77%) (Oyetibo et al, 2021). Campilobacterota has been observed at higher abundances (>5%) in thermogenic hydrocarbon seep sediments (Li et al, 2023) and is involved in mediating oxidation of sulfur, sulfide or sulphate in intertidal sediments (7.90-22.15%) (Carrier et al, 2020;Fang et al, 2022). The genus Arcobacter has been found to increase in abundance in anoxic surface sediments, and in addition, is highly responsive to oxygenation events (Broman et al, 2017;Mori et al, 2021).…”

Section: Relationship Between Intertidal Sediment Biofilms By Station...mentioning

confidence: 99%

Spatio-temporal variation of bacterial community structure in two intertidal sediment types of Jiaozhou Bay

Chen¹,

Zhang²,

Huang³

et al. 2023

Preprint

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The intertidal sediment environment is dynamic and the biofilm bacterial community within it must constantly adjust, but an understanding of the differences in the biofilm bacterial community within sediments of different types is still relatively limited. In this study, the structure of the bacterial community in Jiaozhou Bay sediment biofilms are described using high-throughput 16S rRNA gene sequencing and the effects of temporal change and different sediment environment types are discussed. The Shannon index was significantly higher in sandy samples than in muddy samples. The co-occurrence network was tighter and more species were involved in community building in sandy samples. The principal coordinates analysis identified a significant separation between different sediment types and between stations (LiCun estuary, LC and ZhanQiao Pier, ZQ). Proteobacteria, which had a relative abundance of approximately 50% at all phylum levels, was significantly more abundant at ZQ, while Campilobacterota and Firmicutes were significantly more abundant at LC. The relative abundances of Bacteroidetes, Campilobacterota, Firmicutes, and Chloroflexi were significantly higher in the muddy samples, while Actinobacteria and Proteobacteria were higher in the sandy samples. There were different phylum-level biomarkers between sediment types at different stations. There were also different patterns of functional enrichment in biogeochemical cycles between sediment types and stations with the former having more gene families that differed significantly, highlighting their greater role in determining bacterial function. The RDA results, where each month’s samples were concentrated individually, showed reduced variation between months when the amplicon sequence variant was replaced by KEGG orthologs, presumably the temporal change had an impact on shaping the intertidal sediment bacterial community, although this was less clear at the gene family level. Random forest prediction yielded a combination of 43 family-level features that responded well to temporal change, reflecting the influence of temporal change on sediment biofilm bacteria.HighlightsSandy sediments have more bacterial species involved in community building.Different substrates from different stations have their own phylum biomarkers.Substrates have a greater influence on shaping bacterial function.Temporal changes have a greater shaping power on bacteria than on gene families.Graphic abstract

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Polychaete Bioturbation Alters the Taxonomic Structure, Co-occurrence Network, and Functional Groups of Bacterial Communities in the Intertidal Flat

Cited by 9 publications

References 54 publications

Animal burrowing at cold seep ecotones boosts productivity by linking macromolecule turnover with chemosynthesis and nutrient cycling

Animal burrowing at cold seep ecotones boosts productivity by linking macromolecule turnover with chemosynthesis and nutrient cycling

Effects of Water Loss Stress under Tidal Effects on the Epiphytic Bacterial Community of Sargassum thunbergii in the Intertidal Zone

Spatio-temporal variation of bacterial community structure in two intertidal sediment types of Jiaozhou Bay

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