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Variable inter and intraspecies alkaline phosphatase activity within single cells of revived dinoflagellates ArchiMer
Girault, Mathias; Siano, Raffaele; Labry, Claire; Latimier, Marie; Jauzein, Cecile; Beneyton, Thomas; Buisson, Lionel; Del Amo, Yolanda; Baret, Jean-christophe.
Adaptation of cell populations to environmental changes is mediated by phenotypic variability at the single-cell level. Enzyme activity is a key factor in cell phenotype and the expression of the alkaline phosphatase activity (APA) is a fundamental phytoplankton strategy for maintaining growth under phosphate-limited conditions. Our aim was to compare the APA among cells and species revived from sediments of the Bay of Brest (Brittany, France), corresponding to a pre-eutrophication period (1940’s) and a beginning of a post-eutrophication period (1990’s) during which phosphate concentrations have undergone substantial variations. Both toxic marine dinoflagellate Alexandrium minutum and the non-toxic dinoflagellate Scrippsiella acuminata were revived from...
Tipo: Text Palavras-chave: Climate-change ecology; Microbial ecology.
Ano: 2021 URL: https://archimer.ifremer.fr/doc/00679/79097/81568.pdf
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