We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Revisiting the wax plants (Hoya, Marsdenieae, Apocynaceae): Phylogenetic tree using the matK gene and psbA-trnH intergenic spacer.
- Authors
Wanntorp, Livia; Gotthardt, Katherina; Muellner, Alexandra N.
- Abstract
The genus Hoya includes over 200 species with a geographic distribution covering all eight currently recognised biodiversity hotspots in the lndomalesian-Australasian region. Despite the great horticultural interest inHoya, which includes some of the most commonly cultivated ornamental plants, very little is known about their evolution and a phylogenetic clas- sification for the genus is lacking. Here we explore the phylogeny of 81 species of Hoya and close relatives by adding DNA sequences of the chloroplast matK gene and the psbA-trnH intergenic spacer to an existing molecular dataset consisting of nuclear ITS sequences and chloroplast sequences ofthe trnL region and the atpB-rbcL spacer. The topology obtained confirms previously identified clades in Hoya and resolves the phylogenetic relationships among a greater number of species. The phy- logenetic position of Eriostemma, a section that is well defined by morphological characters, remains unresolved. However, Clemensie/la mariae is here shown for the first time to be part of Hoya and sister to sect. Eriostemma, pointing to the urgent need of intrageneric revisions in the tribe Marsdenieae. At least two additional sections, Hoya and Otostemma, do not reflect phylogenetic relationships and should not be retained in taxonomic revisions of the genus.
- Subjects
NUCLEOTIDE sequence; ORNAMENTAL plants; WAX plants; PLANT phylogeny; HOYA; BIODIVERSITY; CHLOROPLASTS
- Publication
Taxon, 2011, Vol 60, Issue 1, p4
- ISSN
0040-0262
- Publication type
Article