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Rhodobacteraceae dominate the core microbiome of the sea star Odontaster validus (Koehler, 1906) in two opposite geographical sectors of the Antarctic Ocean

Microbiota plays essential roles in the health, physiology, and in adaptation of marine multi-cellular organisms to their environment. In Antarctica, marine organisms have a wide range of unique physiological functions and adaptive strategies, useful for coping with extremely cold conditions. Howeve...

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Autores principales: Buschi, Emanuela, Dell’Anno, Antonio, Tangherlini, Michael, Stefanni, Sergio, Lo Martire, Marco, Núñez-Pons, Laura, Avila, Conxita, Corinaldesi, Cinzia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10548270/
https://www.ncbi.nlm.nih.gov/pubmed/37799611
http://dx.doi.org/10.3389/fmicb.2023.1234725
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author Buschi, Emanuela
Dell’Anno, Antonio
Tangherlini, Michael
Stefanni, Sergio
Lo Martire, Marco
Núñez-Pons, Laura
Avila, Conxita
Corinaldesi, Cinzia
author_facet Buschi, Emanuela
Dell’Anno, Antonio
Tangherlini, Michael
Stefanni, Sergio
Lo Martire, Marco
Núñez-Pons, Laura
Avila, Conxita
Corinaldesi, Cinzia
author_sort Buschi, Emanuela
collection PubMed
description Microbiota plays essential roles in the health, physiology, and in adaptation of marine multi-cellular organisms to their environment. In Antarctica, marine organisms have a wide range of unique physiological functions and adaptive strategies, useful for coping with extremely cold conditions. However, the role of microbiota associated with Antarctic organisms in such adaptive strategies is underexplored. In the present study, we investigated the diversity and putative functions of the microbiome of the sea star Odontaster validus, one of the main keystone species of the Antarctic benthic ecosystems. We compared the whole-body bacterial microbiome of sea stars from different sites of the Antarctic Peninsula and Ross Sea, two areas located in two opposite geographical sectors of the Antarctic continent. The taxonomic composition of O. validus microbiomes changed both between and within the two Antarctic sectors, suggesting that environmental and biological factors acting both at large and local scales may influence microbiome diversity. Despite this, one bacterial family (Rhodobacteraceae) was shared among all sea star individuals from the two geographical sectors, representing up to 95% of the microbial core, and suggesting a key functional role of this taxon in holobiont metabolism and well-being. In addition, the genus Roseobacter belonging to this family was also present in the surrounding sediment, implying a potential horizontal acquisition of dominant bacterial core taxa via host-selection processes from the environment.
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spelling pubmed-105482702023-10-05 Rhodobacteraceae dominate the core microbiome of the sea star Odontaster validus (Koehler, 1906) in two opposite geographical sectors of the Antarctic Ocean Buschi, Emanuela Dell’Anno, Antonio Tangherlini, Michael Stefanni, Sergio Lo Martire, Marco Núñez-Pons, Laura Avila, Conxita Corinaldesi, Cinzia Front Microbiol Microbiology Microbiota plays essential roles in the health, physiology, and in adaptation of marine multi-cellular organisms to their environment. In Antarctica, marine organisms have a wide range of unique physiological functions and adaptive strategies, useful for coping with extremely cold conditions. However, the role of microbiota associated with Antarctic organisms in such adaptive strategies is underexplored. In the present study, we investigated the diversity and putative functions of the microbiome of the sea star Odontaster validus, one of the main keystone species of the Antarctic benthic ecosystems. We compared the whole-body bacterial microbiome of sea stars from different sites of the Antarctic Peninsula and Ross Sea, two areas located in two opposite geographical sectors of the Antarctic continent. The taxonomic composition of O. validus microbiomes changed both between and within the two Antarctic sectors, suggesting that environmental and biological factors acting both at large and local scales may influence microbiome diversity. Despite this, one bacterial family (Rhodobacteraceae) was shared among all sea star individuals from the two geographical sectors, representing up to 95% of the microbial core, and suggesting a key functional role of this taxon in holobiont metabolism and well-being. In addition, the genus Roseobacter belonging to this family was also present in the surrounding sediment, implying a potential horizontal acquisition of dominant bacterial core taxa via host-selection processes from the environment. Frontiers Media S.A. 2023-09-20 /pmc/articles/PMC10548270/ /pubmed/37799611 http://dx.doi.org/10.3389/fmicb.2023.1234725 Text en Copyright © 2023 Buschi, Dell’Anno, Tangherlini, Stefanni, Lo Martire, Núñez-Pons, Avila and Corinaldesi. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Microbiology
Buschi, Emanuela
Dell’Anno, Antonio
Tangherlini, Michael
Stefanni, Sergio
Lo Martire, Marco
Núñez-Pons, Laura
Avila, Conxita
Corinaldesi, Cinzia
Rhodobacteraceae dominate the core microbiome of the sea star Odontaster validus (Koehler, 1906) in two opposite geographical sectors of the Antarctic Ocean
title Rhodobacteraceae dominate the core microbiome of the sea star Odontaster validus (Koehler, 1906) in two opposite geographical sectors of the Antarctic Ocean
title_full Rhodobacteraceae dominate the core microbiome of the sea star Odontaster validus (Koehler, 1906) in two opposite geographical sectors of the Antarctic Ocean
title_fullStr Rhodobacteraceae dominate the core microbiome of the sea star Odontaster validus (Koehler, 1906) in two opposite geographical sectors of the Antarctic Ocean
title_full_unstemmed Rhodobacteraceae dominate the core microbiome of the sea star Odontaster validus (Koehler, 1906) in two opposite geographical sectors of the Antarctic Ocean
title_short Rhodobacteraceae dominate the core microbiome of the sea star Odontaster validus (Koehler, 1906) in two opposite geographical sectors of the Antarctic Ocean
title_sort rhodobacteraceae dominate the core microbiome of the sea star odontaster validus (koehler, 1906) in two opposite geographical sectors of the antarctic ocean
topic Microbiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10548270/
https://www.ncbi.nlm.nih.gov/pubmed/37799611
http://dx.doi.org/10.3389/fmicb.2023.1234725
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