Marinobacter Dominates the Bacterial Community of the Ostreococcus tauri Phycosphere in Culture

Autor: Marc Krasovec, Sophie Sanchez-Ferandin, Raphaël Lami, Gwenael Piganeau, Hervé Moreau, Nigel Grimsley, Josselin Lupette
Přispěvatelé: Biologie intégrative des organismes marins (BIOM), Observatoire océanologique de Banyuls (OOB), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Physiologie cellulaire et végétale (LPCV), Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire de Biodiversité et Biotechnologies Microbiennes (LBBM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-PIERRE FABRE-EDF (EDF)-Centre National de la Recherche Scientifique (CNRS), Sorbonne Universites, SATS-SU [ANR-11-IDEX-0004-02], PHYTNESS project [ANR-I3-JSV6-0005], Michael Thomas-Poulsen, Tony Gutierrez, Garret Suen, Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Sanchez-Ferandin, Sophie
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Frontiers in Microbiology
Frontiers in Microbiology, Frontiers Media, 2016, 7, pp.1414. ⟨10.3389/fmicb.2016.01414⟩
Frontiers in microbiology
Frontiers in microbiology, Frontiers Research Foundation, 2016, 7, pp.1414. ⟨10.3389/fmicb.2016.01414⟩
Frontiers in Microbiology, 2016, 7, pp.1414. ⟨10.3389/fmicb.2016.01414⟩
Frontiers in Microbiology, Vol 7 (2016)
Frontiers in Microbiology (7), 1-14. (2016)
ISSN: 1664-302X
Popis: International audience; Microalgal–bacterial interactions are commonly found in marine environments and are well known in diatom cultures maintained in laboratory. These interactions also exert strong effects on bacterial and algal diversity in the oceans. Small green eukaryote algae of the class Mamiellophyceae (Chlorophyta) are ubiquitous and some species, such as Ostreococcus spp., are particularly important in Mediterranean coastal lagoons, and are observed as dominant species during phytoplankton blooms in open sea. Despite this, little is known about the diversity of bacteria that might facilitate or hinder O. tauri growth. We show, using rDNA 16S sequences, that the bacterial community found in O. tauri RCC4221 laboratory cultures is dominated by γ-proteobacteria from the Marinobacter genus, regardless of the growth phase of O. tauri RCC4221, the photoperiod used, or the nutrient conditions (limited in nitrogen or phosphorous) tested. Several strains of Marinobacter algicola were detected, all closely related to strains found in association with taxonomically distinct organisms, particularly with dinoflagellates and coccolithophorids. These sequences were more distantly related to M. adhaerens, M. aquaeoli and bacteria usually associated to euglenoids. This is the first time, to our knowledge, that distinct Marinobacter strains have been found to be associated with a green alga in culture.
Databáze: OpenAIRE
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