Accès ouvert
2026
preprint
OpenAlex
Louison Dufour, Emile Faure, Frédéric Partensky, F. Mattei et autres
ABSTRACT Competition for light has driven extensive pigment diversification among phytoplankton species, yet how this diversity shapes their spatiotemporal distribution in the field has been little studied so far. The cyanobacterium Synechococcus is an ideal model for addressing this issue, since this …
fr, by, gb, is, au, us
(code pays fourni par la source)
Accès ouvert
2026
article
OpenAlex
Flavien Petit, Julia Uitz, Louison Dufour, Collin Roesler et autres
Phytoplankton community composition is a key determinant of ocean biogeochemical cycles, yet its observation from autonomous platforms remains challenging. In this study, we assessed the potential of in situ multispectral excitation fluorescence (MXF) to predict phytoplankton community structure indices in the Northwestern …
fr, gb, Maroc, by, us, au
(code pays fourni par la source)
Accès ouvert
2025
preprint
OpenAlex
Margaux Crédeville, Roy El Hourany, Swan L. S. Sow, Julie Poulain et autres
Abstract Marine plankton are key drivers of ocean productivity and global carbon cycling, yet their quantitative biogeography remains poorly characterized. Environmental genomic datasets are inherently compositional, restricting analyses to relative abundances and limiting their integration into ecological and biogeochemical models. Here we …
fr, ae, gb, us
(code pays fourni par la source)
Accès ouvert
2025
article
OpenAlex
Louison Dufour, Laurence Garczarek, F. Mattei, Bastian Gouriou et autres
ABSTRACT Competition between phytoplankton species for light has triggered extensive diversification of photosynthetic pigments. In Synechococcus cyanobacteria, three major pigment types occur in the ocean: blue light (BL) specialists that have a high ratio of the BL-absorbing chromophore phycourobilin (PUB) to the …
fr, us, de, nl
(code pays fourni par la source)
Accès ouvert
2025
article
OpenAlex
F. Mattei, Anna E. Hickman, Julia Uitz, Louison Dufour et autres
Marine photoautotrophs have evolved to exploit the ocean’s variable light conditions, with chromatic acclimators being able to adjust their pigment content to better match the ambient light color. The impact of chromatic acclimation on phytoplankton distribution and competition is not well understood …
fr, gb, by, us
(code pays fourni par la source)
Accès ouvert
2025
preprint
OpenAlex
Louison Dufour, Laurence Garczarek, F. Mattei, Bastian Gouriou et autres
ABSTRACT Competition between phytoplankton species for light has triggered an extensive diversification of photosynthetic pigments. In Synechococcus cyanobacteria, three major pigment types occur in the ocean: blue light (BL) specialists that have a high ratio of the BL-absorbing chromophore phycourobilin (PUB) to …
fr, by, us, de, nl
(code pays fourni par la source)
Accès ouvert
2025
other
OpenAlex
N. HENRY, Fabienne Rigaut‐Jalabert, Sarah Romac, Marion Ballenghien et autres
In the frame of the French coastal environment observation network SOMLIT (physicochemical parameters), a plankton monitoring is performed at the SOMLIT-Astan site (western English Channel, 2.5 nautical miles off Roscoff, Brittany, France, 60 m depth - 48°46′18′′ N–3°58′6′′ W). Plankton samples were …
fr
(code pays fourni par la source)
Accès ouvert
2024
article
OpenAlex
Louison Dufour, Laurence Garczarek, Bastian Gouriou, Julia Clairet et autres
Synechococcus, the second most abundant marine phytoplanktonic organism, displays the widest variety of pigment content of all marine oxyphototrophs, explaining its ability to colonize all spectral niches occurring in the upper lit layer of oceans. Seven Synechococcus pigment types (PTs) have been …
fr
(code pays fourni par la source)
Accès ouvert
2023
preprint
OpenAlex
Louison Dufour, Bastian Gouriou, Julia Clairet, Morgane Ratin et autres
ABSTRACT Synechococcus is one of two most abundant phytoplanktonic organisms of the Ocean and also displays the widest variety of pigmentation of all marine oxyphotrophs, which makes it ideally suited to colonize the variety of spectral niches occurring in the upper-lit layer …
fr
(code pays fourni par la source)
Accès ouvert
2023
article
OpenAlex
Laura Alonso‐Sáez, Antonio S. Palacio, Ana María Cabello, Semidán Robaina‐Estévez et autres
growth rate under cold conditions was paralleled by a transcriptional suppression of the photosynthetic machinery during daytime and a loss in the organism's regulatory capacity to maintain circadian expression patterns. Notably, warm temperature induced a marked shrinkage of the organism's cellular transcript …
es, fr
(code pays fourni par la source)
Accès ouvert
2023
article
OpenAlex
Denise Rui Ying Ong, Andres Gutiérrez‐Rodríguez, Laurence Garczarek, Dominique Marie et autres
The petB gene has been proposed as a high-resolution marker gene to access the diversity of marine Synechococcus populations. A systematic metabarcoding approach based on the petB gene would improve the characterization/assessment of the Synechococcus community structure in marine planktonic ecosystems.
sg, nz, fr
(code pays fourni par la source)
Accès ouvert
2023
article
OpenAlex
Hugo Doré, Ulysse Guyet, Jade Leconte, Gregory K. Farrant et autres
The ever-increasing number of available microbial genomes and metagenomes provides new opportunities to investigate the links between niche partitioning and genome evolution in the ocean, especially for the abundant and ubiquitous marine picocyanobacteria Prochlorococcus and Synechococcus. Here, by combining metagenome analyses of …
fr, au, gb, us
(code pays fourni par la source)