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Diversity and characterization of bacterial communities of five co‐occurring species at a hydrothermal vent on the Tonga Arc

Host–symbiont relationships in hydrothermal vent ecosystems, supported by chemoautotrophic bacteria as primary producers, have been extensively studied. However, the process by which densely populated co‐occurring invertebrate hosts form symbiotic relationships with bacterial symbionts remains uncle...

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Autores principales: Lee, Won‐Kyung, Juniper, S. Kim, Perez, Maëva, Ju, Se‐Jong, Kim, Se‐Joo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8093707/
https://www.ncbi.nlm.nih.gov/pubmed/33976824
http://dx.doi.org/10.1002/ece3.7343
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author Lee, Won‐Kyung
Juniper, S. Kim
Perez, Maëva
Ju, Se‐Jong
Kim, Se‐Joo
author_facet Lee, Won‐Kyung
Juniper, S. Kim
Perez, Maëva
Ju, Se‐Jong
Kim, Se‐Joo
author_sort Lee, Won‐Kyung
collection PubMed
description Host–symbiont relationships in hydrothermal vent ecosystems, supported by chemoautotrophic bacteria as primary producers, have been extensively studied. However, the process by which densely populated co‐occurring invertebrate hosts form symbiotic relationships with bacterial symbionts remains unclear. Here, we analyzed gill‐associated symbiotic bacteria (gill symbionts) of five co‐occurring hosts, three mollusks (“Bathymodiolus” manusensis, B. brevior, and Alviniconcha strummeri) and two crustaceans (Rimicaris variabilis and Austinograea alayseae), collected together at a single vent site in the Tonga Arc. We observed both different compositions of gill symbionts and the presence of unshared operational taxonomic units (OTUs). In addition, the total number of OTUs was greater for crustacean hosts than for mollusks. The phylogenetic relationship trees of gill symbionts suggest that γ‐proteobacterial gill symbionts have coevolved with their hosts toward reinforcement of host specificity, while campylobacterial Sulfurovum species found across various hosts and habitats are opportunistic associates. Our results confirm that gill symbiont communities differ among co‐occurring vent invertebrates and indicate that hosts are closely related with their gill symbiont communities. Considering the given resources available at a single site, differentiation of gill symbionts seems to be a useful strategy for obtaining nutrition and energy while avoiding competition among both hosts and gill symbionts.
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spelling pubmed-80937072021-05-10 Diversity and characterization of bacterial communities of five co‐occurring species at a hydrothermal vent on the Tonga Arc Lee, Won‐Kyung Juniper, S. Kim Perez, Maëva Ju, Se‐Jong Kim, Se‐Joo Ecol Evol Original Research Host–symbiont relationships in hydrothermal vent ecosystems, supported by chemoautotrophic bacteria as primary producers, have been extensively studied. However, the process by which densely populated co‐occurring invertebrate hosts form symbiotic relationships with bacterial symbionts remains unclear. Here, we analyzed gill‐associated symbiotic bacteria (gill symbionts) of five co‐occurring hosts, three mollusks (“Bathymodiolus” manusensis, B. brevior, and Alviniconcha strummeri) and two crustaceans (Rimicaris variabilis and Austinograea alayseae), collected together at a single vent site in the Tonga Arc. We observed both different compositions of gill symbionts and the presence of unshared operational taxonomic units (OTUs). In addition, the total number of OTUs was greater for crustacean hosts than for mollusks. The phylogenetic relationship trees of gill symbionts suggest that γ‐proteobacterial gill symbionts have coevolved with their hosts toward reinforcement of host specificity, while campylobacterial Sulfurovum species found across various hosts and habitats are opportunistic associates. Our results confirm that gill symbiont communities differ among co‐occurring vent invertebrates and indicate that hosts are closely related with their gill symbiont communities. Considering the given resources available at a single site, differentiation of gill symbionts seems to be a useful strategy for obtaining nutrition and energy while avoiding competition among both hosts and gill symbionts. John Wiley and Sons Inc. 2021-03-10 /pmc/articles/PMC8093707/ /pubmed/33976824 http://dx.doi.org/10.1002/ece3.7343 Text en © 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Research
Lee, Won‐Kyung
Juniper, S. Kim
Perez, Maëva
Ju, Se‐Jong
Kim, Se‐Joo
Diversity and characterization of bacterial communities of five co‐occurring species at a hydrothermal vent on the Tonga Arc
title Diversity and characterization of bacterial communities of five co‐occurring species at a hydrothermal vent on the Tonga Arc
title_full Diversity and characterization of bacterial communities of five co‐occurring species at a hydrothermal vent on the Tonga Arc
title_fullStr Diversity and characterization of bacterial communities of five co‐occurring species at a hydrothermal vent on the Tonga Arc
title_full_unstemmed Diversity and characterization of bacterial communities of five co‐occurring species at a hydrothermal vent on the Tonga Arc
title_short Diversity and characterization of bacterial communities of five co‐occurring species at a hydrothermal vent on the Tonga Arc
title_sort diversity and characterization of bacterial communities of five co‐occurring species at a hydrothermal vent on the tonga arc
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8093707/
https://www.ncbi.nlm.nih.gov/pubmed/33976824
http://dx.doi.org/10.1002/ece3.7343
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