Journal
PLANT SYSTEMATICS AND EVOLUTION
Volume 265, Issue 3-4, Pages 179-191Publisher
SPRINGER WIEN
DOI: 10.1007/s00606-007-0523-4
Keywords
oedogoniales; Oedogonium; Oedocladium; Bulboehaete; 18S rDNA; ITS-2; phylogeny; systematics
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The phylogeny of Oedogoniales was investigated by using nuclear 18S rDNA sequences. Results showed that the genus Oedocladium, as a separated clade, was clustered within the clade of Oedogonium; whereas the genus Bulbochaete was in a comparatively divergent position to the other two genera. The relationship among the species of Oedogonium was discussed, focusing on ITS-2 phylogeny analyzed combining with some morphological characteristics. Our results showed that all the dioecious nannandrous taxa involved in this study were resolved into one clade, while all the monocious taxa were clustered into another clade as a sister group to the former. The report also suggests that the dioecious macrandrous taxa form a paraphyly and could be more basally situated than the dioecious nannandrous and the monoecious taxa by means of molecular phylogeny and morphotype investigations.
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