Cyanobacterial symbionts diverged in the late Cretaceous towards lineage-specific nitrogen fixation factories in single-celled phytoplankton
The unicellular cyanobacterium UCYN-A, one of the major contributors to nitrogen fixation in the open ocean, lives in symbiosis with single-celled phytoplankton. UCYN-A includes several closely related lineages whose partner fidelity, genome-wide expression and time of evolutionary divergence remain...
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Online Access: | http://hdl.handle.net/2078.1/231557 https://doi.org/10.1038/ncomms11071 |
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ftunivlouvain:oai:dial.uclouvain.be:boreal:231557 2024-05-12T08:11:05+00:00 Cyanobacterial symbionts diverged in the late Cretaceous towards lineage-specific nitrogen fixation factories in single-celled phytoplankton Cornejo-Castillo, Francisco M. Cabello, Ana M. Salazar, Guillem Sánchez-Baracaldo, Patricia Lima Mendez, Gipsi Hingamp, Pascal Alberti, Adriana Sunagawa, Shinichi Bork, Peer de Vargas, Colomban Raes, Jeroen Bowler, Chris Wincker, Patrick Zehr, Jonathan P. Gasol, Josep M. Massana, Ramon Acinas, Silvia G. UCL - SST/LIBST - Louvain Institute of Biomolecular Science and Technology 2016 http://hdl.handle.net/2078.1/231557 https://doi.org/10.1038/ncomms11071 eng eng Springer Science and Business Media LLC boreal:231557 http://hdl.handle.net/2078.1/231557 doi:10.1038/ncomms11071 urn:ISSN:2041-1723 urn:EISSN:2041-1723 info:eu-repo/semantics/openAccess Nature Communications, Vol. 7, no.1, p. 1 (2016) info:eu-repo/semantics/article 2016 ftunivlouvain https://doi.org/10.1038/ncomms11071 2024-04-17T16:43:53Z The unicellular cyanobacterium UCYN-A, one of the major contributors to nitrogen fixation in the open ocean, lives in symbiosis with single-celled phytoplankton. UCYN-A includes several closely related lineages whose partner fidelity, genome-wide expression and time of evolutionary divergence remain to be resolved. Here we detect and distinguish UCYN-A1 and UCYN-A2 lineages in symbiosis with two distinct prymnesiophyte partners in the South Atlantic Ocean. Both symbiotic systems are lineage specific and differ in the number of UCYN-A cells involved. Our analyses infer a streamlined genome expression towards nitrogen fixation in both UCYN-A lineages. Comparative genomics reveal a strong purifying selection in UCYN-A1 and UCYN-A2 with a diversification process B91 Myr ago, in the late Cretaceous, after the low-nutrient regime period occurred during the Jurassic. These findings suggest that UCYN-A diversified in a co-evolutionary process, wherein their prymnesiophyte partners acted as a barrier driving an allopatric speciation of extant UCYN-A lineages. Article in Journal/Newspaper South Atlantic Ocean DIAL@UCLouvain (Université catholique de Louvain) Nature Communications 7 1 |
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DIAL@UCLouvain (Université catholique de Louvain) |
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ftunivlouvain |
language |
English |
description |
The unicellular cyanobacterium UCYN-A, one of the major contributors to nitrogen fixation in the open ocean, lives in symbiosis with single-celled phytoplankton. UCYN-A includes several closely related lineages whose partner fidelity, genome-wide expression and time of evolutionary divergence remain to be resolved. Here we detect and distinguish UCYN-A1 and UCYN-A2 lineages in symbiosis with two distinct prymnesiophyte partners in the South Atlantic Ocean. Both symbiotic systems are lineage specific and differ in the number of UCYN-A cells involved. Our analyses infer a streamlined genome expression towards nitrogen fixation in both UCYN-A lineages. Comparative genomics reveal a strong purifying selection in UCYN-A1 and UCYN-A2 with a diversification process B91 Myr ago, in the late Cretaceous, after the low-nutrient regime period occurred during the Jurassic. These findings suggest that UCYN-A diversified in a co-evolutionary process, wherein their prymnesiophyte partners acted as a barrier driving an allopatric speciation of extant UCYN-A lineages. |
author2 |
UCL - SST/LIBST - Louvain Institute of Biomolecular Science and Technology |
format |
Article in Journal/Newspaper |
author |
Cornejo-Castillo, Francisco M. Cabello, Ana M. Salazar, Guillem Sánchez-Baracaldo, Patricia Lima Mendez, Gipsi Hingamp, Pascal Alberti, Adriana Sunagawa, Shinichi Bork, Peer de Vargas, Colomban Raes, Jeroen Bowler, Chris Wincker, Patrick Zehr, Jonathan P. Gasol, Josep M. Massana, Ramon Acinas, Silvia G. |
spellingShingle |
Cornejo-Castillo, Francisco M. Cabello, Ana M. Salazar, Guillem Sánchez-Baracaldo, Patricia Lima Mendez, Gipsi Hingamp, Pascal Alberti, Adriana Sunagawa, Shinichi Bork, Peer de Vargas, Colomban Raes, Jeroen Bowler, Chris Wincker, Patrick Zehr, Jonathan P. Gasol, Josep M. Massana, Ramon Acinas, Silvia G. Cyanobacterial symbionts diverged in the late Cretaceous towards lineage-specific nitrogen fixation factories in single-celled phytoplankton |
author_facet |
Cornejo-Castillo, Francisco M. Cabello, Ana M. Salazar, Guillem Sánchez-Baracaldo, Patricia Lima Mendez, Gipsi Hingamp, Pascal Alberti, Adriana Sunagawa, Shinichi Bork, Peer de Vargas, Colomban Raes, Jeroen Bowler, Chris Wincker, Patrick Zehr, Jonathan P. Gasol, Josep M. Massana, Ramon Acinas, Silvia G. |
author_sort |
Cornejo-Castillo, Francisco M. |
title |
Cyanobacterial symbionts diverged in the late Cretaceous towards lineage-specific nitrogen fixation factories in single-celled phytoplankton |
title_short |
Cyanobacterial symbionts diverged in the late Cretaceous towards lineage-specific nitrogen fixation factories in single-celled phytoplankton |
title_full |
Cyanobacterial symbionts diverged in the late Cretaceous towards lineage-specific nitrogen fixation factories in single-celled phytoplankton |
title_fullStr |
Cyanobacterial symbionts diverged in the late Cretaceous towards lineage-specific nitrogen fixation factories in single-celled phytoplankton |
title_full_unstemmed |
Cyanobacterial symbionts diverged in the late Cretaceous towards lineage-specific nitrogen fixation factories in single-celled phytoplankton |
title_sort |
cyanobacterial symbionts diverged in the late cretaceous towards lineage-specific nitrogen fixation factories in single-celled phytoplankton |
publisher |
Springer Science and Business Media LLC |
publishDate |
2016 |
url |
http://hdl.handle.net/2078.1/231557 https://doi.org/10.1038/ncomms11071 |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
Nature Communications, Vol. 7, no.1, p. 1 (2016) |
op_relation |
boreal:231557 http://hdl.handle.net/2078.1/231557 doi:10.1038/ncomms11071 urn:ISSN:2041-1723 urn:EISSN:2041-1723 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/ncomms11071 |
container_title |
Nature Communications |
container_volume |
7 |
container_issue |
1 |
_version_ |
1798854685792141312 |