Connectivity and divergence of symbiotic bacteria of deep-sea hydrothermal vent mussels in relation to the structure and dynamics of mid-ocean ridges
The population divergence process of deep-sea vent invertebrates is driven by both biotic (e.g., dispersal during the larval stage) and abiotic factors such as deep-ocean currents, depth, and the geological setting of vents. However, little is known regarding the divergence of hydrothermal vent micr...
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ftdoajarticles:oai:doaj.org/article:3525d3de58c24c048779a85e4412577a 2023-05-15T13:56:58+02:00 Connectivity and divergence of symbiotic bacteria of deep-sea hydrothermal vent mussels in relation to the structure and dynamics of mid-ocean ridges Sook-Jin Jang Yujin Chung Siyeong Jun Yong-Jin Won 2022-10-01T00:00:00Z https://doi.org/10.3389/fmars.2022.845965 https://doaj.org/article/3525d3de58c24c048779a85e4412577a EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fmars.2022.845965/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2022.845965 https://doaj.org/article/3525d3de58c24c048779a85e4412577a Frontiers in Marine Science, Vol 9 (2022) symbiotic bacteria Bathymodioline mussel population divergence seafloor spreading rate Central Indian Ridge Eastern Pacific Ocean Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2022 ftdoajarticles https://doi.org/10.3389/fmars.2022.845965 2022-12-30T21:32:25Z The population divergence process of deep-sea vent invertebrates is driven by both biotic (e.g., dispersal during the larval stage) and abiotic factors such as deep-ocean currents, depth, and the geological setting of vents. However, little is known regarding the divergence of hydrothermal vent microorganisms. Therefore, our study sought to investigate the influence of geological and geographic factors on the divergence of symbiotic bacteria of Bathymodiolus vent mussels. The genetic differentiation patterns of symbionts were examined using next-generation sequencing DNA data in two ocean basins with distinct geological features: the slow-spreading Central Indian Ridge (CIR) and the fast- or superfast-spreading eastern Pacific Ridges. Our findings showed that the degree of differentiation of symbiont populations was geographically hierarchical: the highest between ocean basins, followed by inter-ridge sites between the East Pacific Rise and the Pacific Antarctic Ridge. The Easter Microplate intervening these two ridges acted as a biogeographic physical barrier for both symbionts and their host mussels. On a scale of intra-ridge, symbionts showed isolation by distance in the CIR but not in the eastern Pacific ridges. These contrasting genetic patterns relate to different ridge spreading rates determining most of the geological characteristics of mid-ocean ridges that affect the connectivity of vent habitats in space and time. At the intra-ridge geographic scale of the CIR, population divergence processes of both symbionts and hosts from separate three ridge segments were analyzed in detail using a genetic model of isolation with migration (IM). The phylogenetic topology of symbiont populations was congruent with the host populations, indicating the influence of common historical and physical constraints for habitats and dispersal between vents in the Central Indian Ridge. Collectively, our findings provide key insights into the dynamics of microbial population divergence in deep-sea vents. Article in Journal/Newspaper Antarc* Antarctic Directory of Open Access Journals: DOAJ Articles Antarctic Pacific Indian Frontiers in Marine Science 9 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
symbiotic bacteria Bathymodioline mussel population divergence seafloor spreading rate Central Indian Ridge Eastern Pacific Ocean Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
symbiotic bacteria Bathymodioline mussel population divergence seafloor spreading rate Central Indian Ridge Eastern Pacific Ocean Science Q General. Including nature conservation geographical distribution QH1-199.5 Sook-Jin Jang Yujin Chung Siyeong Jun Yong-Jin Won Connectivity and divergence of symbiotic bacteria of deep-sea hydrothermal vent mussels in relation to the structure and dynamics of mid-ocean ridges |
topic_facet |
symbiotic bacteria Bathymodioline mussel population divergence seafloor spreading rate Central Indian Ridge Eastern Pacific Ocean Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
The population divergence process of deep-sea vent invertebrates is driven by both biotic (e.g., dispersal during the larval stage) and abiotic factors such as deep-ocean currents, depth, and the geological setting of vents. However, little is known regarding the divergence of hydrothermal vent microorganisms. Therefore, our study sought to investigate the influence of geological and geographic factors on the divergence of symbiotic bacteria of Bathymodiolus vent mussels. The genetic differentiation patterns of symbionts were examined using next-generation sequencing DNA data in two ocean basins with distinct geological features: the slow-spreading Central Indian Ridge (CIR) and the fast- or superfast-spreading eastern Pacific Ridges. Our findings showed that the degree of differentiation of symbiont populations was geographically hierarchical: the highest between ocean basins, followed by inter-ridge sites between the East Pacific Rise and the Pacific Antarctic Ridge. The Easter Microplate intervening these two ridges acted as a biogeographic physical barrier for both symbionts and their host mussels. On a scale of intra-ridge, symbionts showed isolation by distance in the CIR but not in the eastern Pacific ridges. These contrasting genetic patterns relate to different ridge spreading rates determining most of the geological characteristics of mid-ocean ridges that affect the connectivity of vent habitats in space and time. At the intra-ridge geographic scale of the CIR, population divergence processes of both symbionts and hosts from separate three ridge segments were analyzed in detail using a genetic model of isolation with migration (IM). The phylogenetic topology of symbiont populations was congruent with the host populations, indicating the influence of common historical and physical constraints for habitats and dispersal between vents in the Central Indian Ridge. Collectively, our findings provide key insights into the dynamics of microbial population divergence in deep-sea vents. |
format |
Article in Journal/Newspaper |
author |
Sook-Jin Jang Yujin Chung Siyeong Jun Yong-Jin Won |
author_facet |
Sook-Jin Jang Yujin Chung Siyeong Jun Yong-Jin Won |
author_sort |
Sook-Jin Jang |
title |
Connectivity and divergence of symbiotic bacteria of deep-sea hydrothermal vent mussels in relation to the structure and dynamics of mid-ocean ridges |
title_short |
Connectivity and divergence of symbiotic bacteria of deep-sea hydrothermal vent mussels in relation to the structure and dynamics of mid-ocean ridges |
title_full |
Connectivity and divergence of symbiotic bacteria of deep-sea hydrothermal vent mussels in relation to the structure and dynamics of mid-ocean ridges |
title_fullStr |
Connectivity and divergence of symbiotic bacteria of deep-sea hydrothermal vent mussels in relation to the structure and dynamics of mid-ocean ridges |
title_full_unstemmed |
Connectivity and divergence of symbiotic bacteria of deep-sea hydrothermal vent mussels in relation to the structure and dynamics of mid-ocean ridges |
title_sort |
connectivity and divergence of symbiotic bacteria of deep-sea hydrothermal vent mussels in relation to the structure and dynamics of mid-ocean ridges |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
https://doi.org/10.3389/fmars.2022.845965 https://doaj.org/article/3525d3de58c24c048779a85e4412577a |
geographic |
Antarctic Pacific Indian |
geographic_facet |
Antarctic Pacific Indian |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Frontiers in Marine Science, Vol 9 (2022) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmars.2022.845965/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2022.845965 https://doaj.org/article/3525d3de58c24c048779a85e4412577a |
op_doi |
https://doi.org/10.3389/fmars.2022.845965 |
container_title |
Frontiers in Marine Science |
container_volume |
9 |
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1766264573550133248 |