Spatial patterns of microbial diversity in Fe-Mn deposits and associated sediments in the Atlantic and Pacific oceans

Bergo, Natascha Menezes; Torres-Ballesteros, Adriana; Signori, Camila Negrão; Benites, Mariana; Jovane, Luigi; Murton, Bramley J.; Rocha, Ulisses Nunes da; Pellizari, Vivian H.

doi:10.1016/j.scitotenv.2022.155792

Cited by 6 publications

(5 citation statements)

References 56 publications

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“…The presence of reinforcing rods within the concrete has a much greater effect than rugosity [40]. The last cited authors found that bacterial groups with increased adherence to reinforced concrete included members of the family Magnetospiraceae and the genera Portibacter, Rubripirellula, and Rhodopirellula; these are not associated with a particular requirement for iron, although Magnetospiraceae have been found in Fe-Mn deposits [56] and Portibacter have been found in iron slags in marine situations [57]. It is likely that metal ions from within the corroding concrete can reach the surface and become available to bacteria in the surrounding seawater.…”

Section: Microbial Adhesion and Biofilm Developmentmentioning

confidence: 99%

Biodeterioration and Chemical Corrosion of Concrete in the Marine Environment: Too Complex for Prediction

Gaylarde,

Ortega-Morales

2023

Microorganisms

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Concrete is the most utilized construction material worldwide. In the marine environment, it is subject to chemical degradation through reactions with chloride (the most important ion), and sulfate and magnesium ions in seawater, and to biodeterioration resulting from biological (initially microbiological) activities, principally acid production. These two types of corrosions are reviewed and the failure of attempts to predict the degree of deterioration resulting from each is noted. Chemical (abiotic) corrosion is greatest in the splash zone of coastal constructions, while phenomenological evidence suggests that biodeterioration is greatest in tidal zones. There have been no comparative experiments to determine the rates and types of microbial biofilm formation in these zones. Both chemical and microbiological concrete deteriorations are complex and have not been successfully modeled. The interaction between abiotic corrosion and biofilm formation is considered. EPS can maintain surface hydration, potentially reducing abiotic corrosion. The early marine biofilm contains relatively specific bacterial colonizers, including cyanobacteria and proteobacteria; these change over time, producing a generic concrete biofilm, but the adhesion of microorganisms to concrete in the oceans has been little investigated. The colonization of artificial reefs is briefly discussed. Concrete appears to be a relatively prescriptive substrate, with modifications necessary to increase colonization for the required goal of increasing biological diversity.

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Section: Microbial Adhesion and Biofilm Developmentmentioning

confidence: 99%

Biodeterioration and Chemical Corrosion of Concrete in the Marine Environment: Too Complex for Prediction

Gaylarde,

Ortega-Morales

2023

Microorganisms

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“…Traditional survey methods, such as morphological identification and trawling, are labor-intensive, time-consuming, invasive, and taxa-specific, thus hindering largescale surveys of deep-sea ecosystems (Beng and Corlett, 2020). Meanwhile, environmental DNA (eDNA) metabarcoding approaches are increasingly used to characterize deep-sea biodiversity across various seafloor habitats (Cowart et al, 2020;Klunder et al, 2020;Laroche et al, 2020b;Bergo et al, 2022;Ferreira et al, 2022;Diao et al, 2023). This method offers several advantages, including cost-effectiveness, environmental nondestructiveness, the ability to detect a wide range of taxa, and efficiency in surveying large and hard-to-access ecosystems with high sensitivity and statistically meaningful sample sizes (Brandt et al, 2020;Le et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Biodiversity and community structures across the Magellan seamounts and abyssal plains in the western Pacific Ocean revealed by environmental DNA metabarcoding analysis

Kim,

Ju,

Suh

2024

Front. Mar. Sci.

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Seamounts within deep-sea ecosystems are recognized as biodiversity hotspots, yet they are increasingly threatened by anthropogenic activities such as overfishing, resource exploitation, and climate change. To establish environmental baseline data and assess the impacts of current or future anthropogenic activities, we conducted environmental DNA (eDNA) metabarcoding analyses to comprehensively characterize prokaryotic and eukaryotic diversity across various water depths of the Magellan seamounts and the adjacent abyssal plains. Metabarcoding analysis revealed higher richness and diversity in both prokaryotic and eukaryotic communities within the seamounts compared to the abyssal plains. Overall, the analysis identified 9,068 prokaryotic amplicon sequence variants (ASVs), representing 39 phyla and 47 classes. Similarly, 4,569 eukaryotic ASVs were identified, spanning 34 phyla and 93 classes. Furthermore, our results revealed distinct community structures between the seamounts and abyssal plains, with turnover across different water depths. These findings are crucial as they indicate the unique ecological roles and potential vulnerability of seamount communities, emphasizing the need for targeted conservation strategies. Our study underscores the importance of conducting comprehensive long-term environmental assessments of the impacts of anthropogenic activities on seamount ecosystems and highlights the potential of eDNA metabarcoding as a powerful tool for guiding conservation and management efforts in remote and challenging marine environments.

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“…The distinct physical, chemical, geological and geographical environmental conditions have created a wide variety of microbial groups with diverse metabolic types. Previous studies mainly focused on the composition and distribution of microbial communities in seamount ecosystems [16,17]. There is increasing interest in the unique microorganisms that can resist high concentrations of heavy metals or are closely related to the metal cycle.…”

Section: Introductionmentioning

confidence: 99%

Rheinheimera oceanensis sp. nov., a novel member of the genus Rheinheimera, isolated from the West Pacific Ocean

Ren,

Guo,

et al. 2023

International Journal of Systematic and Evolutionary Microbiology

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Two Gram-stain-negative, aerobic, non-motile and short-rod-shaped bacteria, designated as strains GL-53T and GL-15-2-5, were isolated from the seamount area of the West Pacific Ocean and identified using a polyphasic taxonomic approach. The growth of strains GL-53ᵀ and GL-15-2-5 occurred at pH 5.5–10.0, 4–40 °C (optimum at 28 °C) and 0–10.0 % NaCl concentrations (optimum at 0–5.0 %). On the basis of 16S rRNA gene sequence analysis, strains GL-53ᵀ and GL-15-2-5 exhibited the highest similarity to Rheinheimera lutimaris YQF-2T (98.4 %), followed by Rheinheimera pacifica KMM 1406T (98.1 %), Rheinheimera nanhaiensis E407-8T (97.4 %), Rheinheimera aestuarii H29T (97.4 %), Rheinheimera hassiensis E48T (97.2 %) and Rheinheimera aquimaris SW-353T (97.2 %). Phylogenetic analysis revealed that the isolates were affiliated with the genus Rheinheimera and represented an independent lineage. The major fatty acids were summed feature 3 (C16 : 1 ω7c and/or C16 : 1 ω6c), C16 : 0 and summed feature 8 (C18 : 1 ω7c and/or C18 : 1 ω6c). The sole isoprenoid quinone was ubiquinone 8. The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol, one unidentified aminophospholipid (and one unidentified glycolipid. The DNA G+C content was 48.5 mol%. The average nucleotide identity, average amino acid identity and in silico DNA–DNA hybridization values among the genomes of strain GL-53ᵀ and the related strains in the genus Rheinheimera were 75.5–90.1 %, 67.5–93.9 % and 21.4–41.4 %, respectively. Based on their phenotypic, chemotaxonomic and genotypic properties, the two strains were identified as representing a novel species of the genus Rheinheimera , for which the name Rheinheimera oceanensis sp. nov. is proposed. The type strain is GL-53T (=KCTC 82651T=MCCC M20598T).

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Spatial patterns of microbial diversity in Fe-Mn deposits and associated sediments in the Atlantic and Pacific oceans

Cited by 6 publications

References 56 publications

Biodeterioration and Chemical Corrosion of Concrete in the Marine Environment: Too Complex for Prediction

Biodeterioration and Chemical Corrosion of Concrete in the Marine Environment: Too Complex for Prediction

Biodiversity and community structures across the Magellan seamounts and abyssal plains in the western Pacific Ocean revealed by environmental DNA metabarcoding analysis

Rheinheimera oceanensis sp. nov., a novel member of the genus Rheinheimera, isolated from the West Pacific Ocean

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