Uptake of Inorganic and Organic Nitrogen Sources by Dinophysis acuminata and D. acuta.

ABSTRACT: Dinoflagellate species of Dinophysis are obligate mixotrophs that require light, nutrients, and prey for sustained growth. Information about their nitrogenous nutrient preferences and their uptake kinetics are scarce. This study aimed to determine the preferred nitrogen sources in cultures of D. acuminata and D. acuta strains from the Galician Rías Baixas (NW Spain) and to compare their uptake kinetics. Well-fed versus starved cultures of D. acuminata and D. acuta were supplied with N¹⁵ labeled inorganic (nitrate, ammonium) and organic (urea) nutrients. Both species showed a preference for ammonium and urea whereas uptake of nitrate was negligible. Uptake rates by well-fed cells of D. acuminata and D

SUBMITTER: Garcia-Portela M 

PROVIDER: S-EPMC7074736 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature