It is demonstrated that diatom RNA virus infection reshapes host carbon and nitrogen metabolism, with cascading effects on elemental cycling, which identifies diatom RNA viruses as important drivers of marine biogeochemical processes, with implications for primary production and the fate of organic matter in the ocean.
Dinitrogen (N₂) fixation supplies reactive nitrogen to the ocean, and non-cyanobacterial diazotrophs (NCDs) are increasingly recognized as contributors. Marine particles have been theorized as hotspots where low oxygen and labile carbon favor N₂ fixation by NCDs, but empirical proof is lacking. Here, we show that p...
Arthur Coët, O. Grosso, N. Brouilly et al.· Communications Biology· 2 citations
ABSTRACT Viral lysis is a major driver of phytoplankton mortality and a key source of dissolved organic matter in the ocean, yet quantitative and taxon‐resolved measurements of this process remain limited for eukaryotic plankton. Here, we demonstrate that cell‐free ribosomal RNA (rRNA) dissolved in the extracellular me...
Saki Kikuya, Y. Tomaru, Keizo Nagasaki et al.· MicrobiologyOpen· 0 citations
Summary Diatoms are vital primary producers in marine ecosystems and play a key role in blue carbon sequestration. Although their circadian rhythms have been studied in isolation, how these rhythms are modulated by co-occurring bacteria remains unknown. Using a defined co-culture of the diatom Phaeodactylum tricornutum...
Jiwei Chen, Hang Diao, Ying-Dong Su et al.· iScience· 0 citations
Abstract Warmer waters are reshaping unseen interactions at the base of aquatic food webs, with potential consequences for microalgal bloom dynamics and carbon transfer to higher trophic levels. Two major groups of aquatic parasites—chytrids and oomycetes—infect the same algal host, and changes in temperature can alter...
Doris Ilicic, M. Vallet, Fatemeh Salimi et al.· ISME Communications· 0 citations
Diatoms are major contributors to marine primary production, yet current approaches for monitoring their abundance and function rely on coarse satellite chlorophyll estimates or sparse cell counts and bulk carbon fixation measurements. Molecular markers are a promising approach for high-resolution measurement of both a...
F. Verret, Katherine Hartle-Mougiou, Christos Chantzaras et al.· bioRxiv· 0 citations
Unicellular diazotrophic cyanobacteria contribute up to ~50% of marine N2 fixation, and Crocosphaera watsonii, characterized by high phycoerythrin (PE) content, is among one of the key species in tropical and subtropical oceans. Although recent observations have revealed heterogeneous N2 fixation activity within C. wat...
Takako Masuda, G. Konert, Dominik Pinkas et al.· Limnology and Oceanography L...· 0 citations
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