Comparative ecophysiology and genomics of the toxic unicellular alga Fibrocapsa japonica

Summary *Ten axenic cultures, referred to as Fibrocapsa japonica, were studied for their morphology, pigment composition, toxicity and phylogeny. *Morphologically, all 10 accessions were similar and displayed equivalent pigment contents. We identified chlorophylls a and c, beta-carotene and fucoxant...

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Publié dans:The New phytologist. - 1979. - 185(2010), 2 vom: 01. Jan., Seite 446-58
Auteur principal: Guidi-Rontani, Chantal (Auteur)
Autres auteurs: Maheswari, Uma, Jabbari, Kamel, Bowler, Chris
Format: Article en ligne
Langue:English
Publié: 2010
Accès à la collection:The New phytologist
Sujets:Comparative Study Journal Article Research Support, Non-U.S. Gov't Xanthophylls fucoxanthin 06O0TC0VSM Chlorophyll 1406-65-1 Carotenoids 36-88-4
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520 |a Summary *Ten axenic cultures, referred to as Fibrocapsa japonica, were studied for their morphology, pigment composition, toxicity and phylogeny. *Morphologically, all 10 accessions were similar and displayed equivalent pigment contents. We identified chlorophylls a and c, beta-carotene and fucoxanthin as the dominant pigments, together with xanthophyll cycle carotenoids likely to be involved in photoprotection. *All 10 accessions caused brine shrimp, Artemia salina, mortality and displayed haemolytic and haemaglutination activities toward sheep erythrocytes. Our results indicate that haemaglutination activity is a key component of F. japonica toxicity. *Examination of a collection of F. japonica expressed sequence tags (ESTs) has led to the identification of candidate genes involved in F. japonica toxicity and/or growth control 
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