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Allelochemicals of Alexandrium minutum: Kinetics of membrane disruption and photosynthesis inhibition in a co-occurring diatom ArchiMer
Long, Marc; Peltekis, Alexandra; González-fernández, Carmen; Hégaret, Helene; Bailleul, Benjamin.
Allelopathy is an efficient strategy by which some microalgae can outcompete other species. Allelochemicals from the toxic dinoflagellate Alexandrium minutum have deleterious effects on diatoms, inhibiting metabolism and photosynthesis and therefore give a competitive advantage to the dinoflagellate. The precise mechanisms of allelochemical interactions and the molecular target of allelochemicals remain however unknown. To understand the mechanisms, the short-term effects of A. minutum allelochemicals on the physiology of the diatom Chaetoceros muelleri were investigated. The effects of a culture filtrate were measured on the diatom cytoplasmic membrane integrity (polarity and permeability) using flow-cytometry and on the photosynthetic performance using...
Tipo: Text Palavras-chave: Allelochemicals; Allelopathy; Alexandrium minutum; Chaetoceros muelleri; Photosynthesis; Membrane.
Ano: 2021 URL: https://archimer.ifremer.fr/doc/00680/79191/81688.pdf
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