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- Title
PHYLOGENETIC AFFINITIES OF THE SARCINOCHRYSIDALES AND CHRYSOMERIDALES (HETEROKONTA)BASED ON ANALYSES OF MOLECULAR AND COMBINED DATA.
- Authors
Saunders, Gary W.; Potter, Daniel; Andersen, Robert A.
- Abstract
Small-subunit ribosomal RNA nucleotide sequences were inferred for Giraudyopsis stellifera Dangeard (Chrysomeridales), as well as for Pulvinaria sp. And Sarcinochrysis marina Geitler (Sarcinochrysidales). Phylogenetic analyses of the molecular data indicate that he former is weakly related to the Phaeophyceae/Xanthophyceae clade, whereas the latter two have affinities to the Pelagophyceae, and the Sarcinochrysidales sensu stricto is transferred to this class. A recent study proposed that the Pelagophyceae belongs to a larger assemblage of chromophytic species characterized by reduced flagellar apparatuses.Although the flagellar apparatus characterizing the Sarcinochrysidales is reduced relative to the Chrysomeridales and some other chromophytes, it is the most complicated to be associated with "the reduced flagellar apparatus" lineage. Cladistic analyses of the flagellar apparatus) and a combined traditional/molecular data set were used to assess the evolutionary trends of reduction in the flagellar apparatus within the heterokont chromophytes.
- Subjects
RNA; NUCLEOTIDE sequence; XANTHOPHYCEAE; CHROMOPHYTA; TRENDS
- Publication
Journal of Phycology, 1997, Vol 33, Issue 2, p310
- ISSN
0022-3646
- Publication type
Article
- DOI
10.1111/j.0022-3646.1997.00310.x