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Studies on the Genus Mesodinium I: Ultrastructure and Description of Mesodinium chamaeleon n. sp., a Benthic Marine Species with Green or Red Chloroplasts.
MedLine Citation:
PMID:  22221919     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
We provide here the description of a new marine species that harbors green or red chloroplasts. In contrast to certain other species of the genus, Mesodinium chamaeleon n. sp. can be maintained in culture for short periods only. It captures and ingests flagellates including cryptomonads. The prey is ingested very rapidly into a food vacuole without the cryptomonad flagella being shed and the trichocysts being discharged. The individual food vacuoles subsequently serve as photosynthetic units, each containing the cryptomonad chloroplast, a nucleus, and some mitochondria. The ingested cells are eventually digested. This type of symbiosis differs from other plastid-bearing Mesodinium spp. in retaining ingested cryptomonad cells almost intact. The food strategy of the new species appears to be intermediate between heterotrophic species, such as Mesodinium pulex and Mesodinium pupula, and species with red cryptomonad endosymbionts, such as Mesodinium rubrum.
Authors:
Ojvind Moestrup; Lydia Garcia-Cuetos; Per Juel Hansen; Tom Fenchel
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of eukaryotic microbiology     Volume:  59     ISSN:  1550-7408     ISO Abbreviation:  J. Eukaryot. Microbiol.     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2012-01-06     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9306405     Medline TA:  J Eukaryot Microbiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  20-39     Citation Subset:  IM    
Copyright Information:
© 2011 The Author(s) Journal of Eukaryotic Microbiology © 2011 International Society of Protistologists.
Affiliation:
Phycology Laboratory, Department of Biology, University of Copenhagen, Øster Farimagsgade 2D, DK-1353, Copenhagen, Denmark.
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