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- Title
The phylogeny of Mallolus s.str. (Euphorbiaceae) inferred from DNA sequence and morphological data.
- Authors
Sierra, Soraya E. C.; Kuiju, Kristo K. M.; Fišer, Živa; Aparicio, Marcela; Van Welzen, Peter C.
- Abstract
Mallotus s.str. isa monophyletic, large, palaeotropical genus in the family Euphorbiaceae. We investigated the phylogeny of the genus in order to (I) determine the evolutionary relationships within the Ma/lotus s.str. dade; (2) assess whether the six sections as circumscribed in the traditional classification reflect clades and evaluate the characters used in the classification; and (3) determine what are additional new clades and their supporting morphological characters. For this purpose we assembled different datasets: plastid (malK) and nuclear (gpd) DNA sequences, macromorphological features and leaf anatomical data. We found that Ma/lotus sect. Ma/lotus, sect. Polyadenii and sect. Stylanthus are monophyletic, M. sect. Axe nfeldia and sect. Rottleropsis are polyphyletic, and M. sect. Philippinenses is paraphyletic. Six additional clades with morphological synapomorphics were also identified. An analysis of quantitative morphological data, in combination with qualitative morphological and molecular datasets resulted in almost completely resolved phylogenies and increased support values. However, the higher-level relationships between the clades are not supported in our analyses and the position of many taxa is still ambiguous.
- Subjects
EUPHORBIACEAE; PLANT phylogeny; PLANT evolution; DNA; PLANT morphology
- Publication
Taxon, 2010, Vol 59, Issue 1, p101
- ISSN
0040-0262
- Publication type
Article
- DOI
10.1002/tax.591011