Systematics/Phytogeography / Taxonomie/ Section
Wen, Jun .
Phylogenetic relationships and biogeography of Vitaceae (the grape family).
Vitaceae (the grape family) consists of 14 genera and about 950 extant species and is widely distributed in temperate and tropical regions of both hemispheres. Several genera exhibit intercontinental disjunctions in the temperate (e.g., Ampelopsis, Parthenocissus, and Vitis) and tropical regions (Ampelocissus, Cayratia and Cissus). The family also has an excellent Tertiary fossil record. Phylogenetic analysis using nuclear GAI1 gene and chloroplast trnL-F, atpB-rbcL spacer and rpl16 intron of Vitaceae provides a fairly robust and largely congruent phylogeny of the family. Cayratia, Tetrastigma and Cyphostemma form a clade. Cyphostemma and Tetrastigma are each monophyletic, and Cayratia is paraphyletic. Ampelopsis is paraphyletic with the African Rhoicissus and the South American Cissus striata and its close relatives (e.g., C. simsiana) nested within it. The pinnately leaved Ampelopsis forms a subclade, and the simple and palmately leaved Ampelopsis constitutes another subclade. Species of Cissus from Asia, Africa and Central and South America (except the C. striata complex) are monophyletic. Pterisanthes of southeastern Asia forms a clade with the Asian Ampelocissus. Vitis is monophyletic and forms a larger clade with the tropical Ampelocissus, and Pterisanthes. Parthenocissus forms a clade with Yua with each genus supported to be monophyletic. Cissus from the Old World is paraphyletic with the neotropical core Cissus nested within it. The basal grade of Cissus consists of taxa from Africa. The African – Asian biogeographic relationships are dynamic with several intercontinental disjunctions. The northern hemisphere Ampelopsis is most closely related to the South American Cissus striata complex and the African Rhoicissus.
Log in to add this item to your schedule
1 - Smithsonian Institution, Department of Botany MRC 166, National Museum Of Natural History, Po Box 37012, Washington, DC, 20560-0166, USA
Presentation Type: Oral Paper:Papers for Sections
Location: Room 1/Woodward
Date: Monday, July 28th, 2008
Time: 8:00 AM