Abstract:
:Zooxanthellae are unicellular algae that occur as endosymbionts in many hundreds of common marine invertebrates. The issue of zooxanthella diversity has been difficult to address. Most zooxanthellae have been placed in the dinoflagellate genus Symbiodinium as one or several species that are not easily distinguished. We compared Symbiodinium and nonsymbiotic dinoflagellates using small ribosomal subunit RNA sequences. Surprisingly, small ribosomal subunit RNA diversity within the genus Symbiodinium is comparable to that observed among different orders of nonsymbiotic dinoflagellates. These data reinforce the conclusion that Symbiodinium-like zooxanthellae represent a collection of distinct species and provide a precedent for a molecular genetic taxonomy of the genus Symbiodinium.
journal_name
Proc Natl Acad Sci U S Aauthors
Rowan R,Powers DAdoi
10.1073/pnas.89.8.3639keywords:
subject
Has Abstractpub_date
1992-04-15 00:00:00pages
3639-43issue
8eissn
0027-8424issn
1091-6490journal_volume
89pub_type
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