Výsledky vyhledávání - "Nolwen Le Duff"

Consuming fresh macroalgae induces specific catabolic pathways, stress reactions and Type IX secretion in marine flavobacterial pioneer degraders

Autor: Maéva Brunet, Nolwen Le Duff, Tristan Barbeyron, François Thomas

Publikováno v: The ISME Journal. 16:2027-2039

Macroalgae represent huge amounts of biomass worldwide, largely recycled by marine heterotrophic bacteria. We investigated the strategies of bacteria within the flavobacterial genus Zobellia to initiate the degradation of whole algal tissues, which h

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11dad5c2cfb29d17dfa670963404c3da
https://doi.org/10.1038/s41396-022-01251-6

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Seasonal dynamics of a glycan-degrading flavobacterial genus in a tidally-mixed coastal temperate habitat

Autor: Maéva Brunet, Nolwen Le Duff, Fabienne Rigaut-Jalabert, Sarah Romac, Tristan Barbeyron, François Thomas

Coastal marine habitats constitute hotspots of primary productivity. In temperate regions, this is due both to massive phytoplankton blooms and dense colonization by macroalgae that mostly store carbon as glycans, contributing substantially to local

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b32d93ebb3e767b21ccfa4e6088b7669
https://doi.org/10.1101/2023.03.30.534869

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Accumulation of detached kelp biomass in a subtidal temperate coastal ecosystem induces succession of epiphytic and sediment bacterial communities

Autor: Dominique Davoult, Maéva Brunet, Catherine Leblanc, Nolwen Le Duff, Gwenn Tanguy, Angélique Gobet, Florian de Bettignies, François Thomas

Publikováno v: Environmental Microbiology
Environmental Microbiology (1462-2912) (Wiley), 2021-03, Vol. 23, N. 3, P. 1638-1655
Environmental Microbiology, 2021, ⟨10.1111/1462-2920.15389⟩
Environmental Microbiology, Society for Applied Microbiology and Wiley-Blackwell, 2021, ⟨10.1111/1462-2920.15389⟩

International audience; Kelps are dominant primary producers in temperate coastal ecosystems. Large amounts of kelp biomass can be exported to the seafloor during the algal growth cycle or following storms, creating new ecological niches for the asso

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d5988add9d586450b0f86e332ba7ff5
https://doi.org/10.1111/1462-2920.15389

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Structure–function analysis of a new PL17 oligoalginate lyase from the marine bacterium Zobellia galactanivorans DsijT

Autor: Mirjam Czjzek, Robert Larocque, Thomas Roret, Finn Lillelund Aachmann, Nolwen Le Duff, Agathe Jaffrennou, Alexandra Jeudy, Ghislain Duval, François Thomas, Diane Jouanneau, Leesa J. Klau

Publikováno v: Glycobiology
Glycobiology, Oxford University Press (OUP), 2021, 23 (3), pp.1638-1655. ⟨10.1093/glycob/cwab058⟩
'Glycobiology ', vol: 31, pages: 1364-1377 (2021)

Alginate is a major compound of brown macroalgae and as such an important carbon and energy source for heterotrophic marine bacteria. Despite the rather simple composition of alginate only comprising mannuronate and guluronate units, these bacteria f

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Zobellia roscoffensis sp. nov. and Zobellia nedashkovskayae sp. nov., two flavobacteria from the epiphytic microbiota of the brown alga Ascophyllum nodosum, and emended description of the genus Zobellia

Autor: François Thomas, Manon Thiébaud, Micheline Vandenbol, Gwenn Tanguy, Nolwen Le Duff, Erwan Corre, Tristan Barbeyron, Marjolaine Martin

Publikováno v: International Journal of Systematic and Evolutionary Microbiology
International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, 2021, 71 (8), pp.004913. ⟨10.1099/ijsem.0.004913⟩

Four marine bacterial strains were isolated from a thallus of the brown alga Ascophyllum nodosum collected in Roscoff, France. Cells were Gram-stain-negative, strictly aerobic, non-flagellated, gliding, rod-shaped and grew optimally at 25–30 °C, a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7d596c846b3558462bd184edc4efaf9
https://hal.archives-ouvertes.fr/hal-03357314

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Isotopic tracing reveals single-cell assimilation of a macroalgal polysaccharide by a few marine Flavobacteria and Gammaproteobacteria

Autor: Stéphane Uroz, Nolwen Le Duff, Pascal Riera, Ting-Di Wu, Gwenn Tanguy, Cédric Leroux, Aurélie Cébron, Erwan Legeay, François Thomas, Jean-Luc Guerquin-Kern

Publikováno v: ISME Journal
ISME Journal, Nature Publishing Group, 2021, ⟨10.1038/s41396-021-00987-x⟩
The ISME Journal

Algal polysaccharides constitute a diverse and abundant reservoir of organic matter for marine heterotrophic bacteria, central to the oceanic carbon cycle. We investigated the uptake of alginate, a major brown macroalgal polysaccharide, by microbial

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac3b9b1d69c7b25e7ead4eaae3f1df44
http://hdl.handle.net/20.500.12278/29161

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Specific detection and quantification of the marine flavobacterial genus Zobellia on macroalgae using novel qPCR and CARD-FISH assays

Autor: Maéva Brunet, Rudolf Amann, François Thomas, Bernhard M. Fuchs, Nolwen Le Duff, Tristan Barbeyron

Publikováno v: Systematic and Applied Microbiology
Systematic and Applied Microbiology, Elsevier, 2021, 44 (6), pp.126269. ⟨10.1016/j.syapm.2021.126269⟩
SYSTEMATIC AND APPLIED MICROBIOLOGY

The flavobacterial genus Zobellia is considered as a model to study macroalgal polysaccharide degradation. The lack of data regarding its prevalence and abundance in coastal habitats constitutes a bottleneck to assess its ecological strategies. To ov

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea5093098ffcf8bcd554d56429855b6d
https://hal.sorbonne-universite.fr/hal-03417302/file/qPCR-FISH_SAM_revised.pdf

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Isotopic labelling of cultured macroalgae and isolation of 13 C-labelled cell wall polysaccharides for trophic investigations

Autor: François Thomas, Nolwen Le Duff, Laurence Dartevelle, Cédric Leroux, Pascal Riera

Publikováno v: Advances in Botanical Research
Advances in Botanical Research, 2020, ⟨10.1016/bs.abr.2019.11.005⟩

International audience; Macroalgae are considered as major primary producers in coastal environments, acting as a global carbon sink. This abundant biomass contains up to 50% of storage or cell wall polysaccharides, which therefore represent a reserv

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bcb835526d898f0f0bfc5cc2e86172be
https://hal.archives-ouvertes.fr/hal-03035113/document

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Evaluation of a new primer combination to minimize plastid contamination in 16S rDNA metabarcoding analyses of alga-associated bacterial communities

Autor: Catherine Leblanc, Simon M. Dittami, Angélique Gobet, Gwenn Tanguy, François Thomas, Maéva Brunet, Nolwen Le Duff

Publikováno v: Environmental Microbiology Reports
Environmental Microbiology Reports, Wiley, 2019, 12 (1), pp.30-37. ⟨10.1111/1758-2229.12806⟩

Plant- and alga-associated bacterial communities are generally described via 16S rDNA metabarcoding using universal primers. As plastid genomes encode 16S rDNA related to cyanobacteria, these data sets frequently contain >90% plastidial sequences, an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6fdbdf47a2d7216592f71e0c5d1d7556
https://pubmed.ncbi.nlm.nih.gov/31692275

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