No evidence of phago-mixotropy in Micromonas polaris , the dominant picophytoplankton species in the Arctic
ABSTRACT In the Arctic Ocean, the small green alga Micromonas polaris dominates pico-phytoplankton during the summer months. It has been previously hypothesized to be phago-mixotrophic (capable of bacteria ingestion) based on laboratory and field experiments. Prey uptake was analysed in several M. p...
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ftccsdartic:oai:HAL:hal-03972015v1 2024-02-27T08:37:03+00:00 No evidence of phago-mixotropy in Micromonas polaris , the dominant picophytoplankton species in the Arctic Jimenez, Valeria Burns, John Le Gall, Florence Not, Fabrice Vaulot, Daniel Adaptation et diversité en milieu marin (ADMM) Institut national des sciences de l'Univers (INSU - CNRS)-Station biologique de Roscoff = Roscoff Marine Station (SBR) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2023-02-03 https://hal.science/hal-03972015 https://doi.org/10.1101/2020.05.26.117895 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.1101/2020.05.26.117895 hal-03972015 https://hal.science/hal-03972015 BIORXIV: 2020.05.26.117895 doi:10.1101/2020.05.26.117895 https://hal.science/hal-03972015 2023 [SDE]Environmental Sciences info:eu-repo/semantics/preprint Preprints, Working Papers, . 2023 ftccsdartic https://doi.org/10.1101/2020.05.26.117895 2024-01-28T00:56:57Z ABSTRACT In the Arctic Ocean, the small green alga Micromonas polaris dominates pico-phytoplankton during the summer months. It has been previously hypothesized to be phago-mixotrophic (capable of bacteria ingestion) based on laboratory and field experiments. Prey uptake was analysed in several M. polaris strains isolated from different regions and depths of the Arctic Ocean. Using both fluorescent beads and fluorescently labelled bacteria as prey, we found no evidence of phago-mixotrophy in any M. polaris strain by flow cytometric measurement of prey ingestion. In addition, in silico predictions reveal that members of the genus Micromonas lack a genetic signature of phagocytotic capacity. Report Arctic Arctic Ocean Phytoplankton Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Arctic Ocean |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Jimenez, Valeria Burns, John Le Gall, Florence Not, Fabrice Vaulot, Daniel No evidence of phago-mixotropy in Micromonas polaris , the dominant picophytoplankton species in the Arctic |
topic_facet |
[SDE]Environmental Sciences |
description |
ABSTRACT In the Arctic Ocean, the small green alga Micromonas polaris dominates pico-phytoplankton during the summer months. It has been previously hypothesized to be phago-mixotrophic (capable of bacteria ingestion) based on laboratory and field experiments. Prey uptake was analysed in several M. polaris strains isolated from different regions and depths of the Arctic Ocean. Using both fluorescent beads and fluorescently labelled bacteria as prey, we found no evidence of phago-mixotrophy in any M. polaris strain by flow cytometric measurement of prey ingestion. In addition, in silico predictions reveal that members of the genus Micromonas lack a genetic signature of phagocytotic capacity. |
author2 |
Adaptation et diversité en milieu marin (ADMM) Institut national des sciences de l'Univers (INSU - CNRS)-Station biologique de Roscoff = Roscoff Marine Station (SBR) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Report |
author |
Jimenez, Valeria Burns, John Le Gall, Florence Not, Fabrice Vaulot, Daniel |
author_facet |
Jimenez, Valeria Burns, John Le Gall, Florence Not, Fabrice Vaulot, Daniel |
author_sort |
Jimenez, Valeria |
title |
No evidence of phago-mixotropy in Micromonas polaris , the dominant picophytoplankton species in the Arctic |
title_short |
No evidence of phago-mixotropy in Micromonas polaris , the dominant picophytoplankton species in the Arctic |
title_full |
No evidence of phago-mixotropy in Micromonas polaris , the dominant picophytoplankton species in the Arctic |
title_fullStr |
No evidence of phago-mixotropy in Micromonas polaris , the dominant picophytoplankton species in the Arctic |
title_full_unstemmed |
No evidence of phago-mixotropy in Micromonas polaris , the dominant picophytoplankton species in the Arctic |
title_sort |
no evidence of phago-mixotropy in micromonas polaris , the dominant picophytoplankton species in the arctic |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-03972015 https://doi.org/10.1101/2020.05.26.117895 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Phytoplankton |
genre_facet |
Arctic Arctic Ocean Phytoplankton |
op_source |
https://hal.science/hal-03972015 2023 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1101/2020.05.26.117895 hal-03972015 https://hal.science/hal-03972015 BIORXIV: 2020.05.26.117895 doi:10.1101/2020.05.26.117895 |
op_doi |
https://doi.org/10.1101/2020.05.26.117895 |
_version_ |
1792044027619573760 |