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Phylogeny of <I>Symplocos</I> Based on DNA Sequences of the Chloroplast <I>trnC–trnD</I> Intergenic Region

2006; American Society of Plant Taxonomists; Volume: 31; Issue: 1 Linguagem: Inglês

10.1600/036364406775971877

1548-2324

Peter W. Fritsch, Boni C. Cruz, Frank Almeda, Yuguo Wang, Suhua Shi,

Plant and Fungal Species Descriptions

Abstract Phylogenetic analysis of 74 species of Symplocos was conducted with DNA sequence data from the chloroplast trnC-trnD intergenic region. Maximum parsimony and Bayesian inference trees are consistent with those of a previous study based on combined data from the nuclear ribosomal ITS region and the chloroplast regions rpl16, matK, and trnL-trnF. The inclusion of 21 phylogenetically informative indel characters from trnC-trnD resulted in greater maximum parsimony resolution and clade support than with these characters excluded. A combined five-gene-region (trnC-trnD, ITS, rpl16, matK, and trnL-trnF) analysis based on a data set with complete sequence data is almost completely concordant with that of the combined four-gene data set, and displays higher resolution and overall clade support (in some cases 20 to > 30 bootstrap percentage points). The data indicate monophyly for only one subgenus (Epigenia) and four sections (Barberina, Cordyloblaste, Neosymplocos, and Urbaniocharis) of Symplocos; the ot...