Ribes (Grossulariaceae) phylogeny as indicated by restriction-site polymorphisms of PCR-amplified chloroplast DNA |
| |
Authors: | Wes Messinger Kim Hummer Aaron Liston |
| |
Institution: | (1) Department of Botany and Plant Pathology, Oregon State University, 97331-2902 Corvallis, OR, USA;(2) USDA-ARS National Clonal Germplasm Repository, 33447 Peoria Road, 97333-2521 Corvallis, OR, USA |
| |
Abstract: | We surveyed exemplars from all 12 infrageneric taxa ofRibes (Grossulariaceae) for restriction site variation in two cpDNA regions, fromrbcL toaccD and fromrpoC1 torpoC2, in order to develop an explicit phylogenetic hypothesis and to assess the validity of infrageneric classifications. Maximum parsimony analysis resolves sect.Ribes (red currants), sect.Berisia (European alpine currants), sect.Symphocalyx (golden currants), sect.Grossularia plus sect.Grossularioides (true gooseberries and spiny currants), andHesperia, Lobbia, and probably sect.Robsonia (west North American gooseberries) as well-supported monophyletic groups. The clade of sectionsGrossularioides andGrossularia is unexpected, and suggests that subgenusGrossularia is not monophyletic. Alternatively, sect.Grossularioides may have acquired its cpDNA via hybridization and introgression. SectionsCoreosma (black currants) andHeritiera (dwarf currants) are apparently non monophyletic. Relationships among the well-supported lineages and the other sampled taxa remain unresolved. Maximum likelihood analysis is consistent with the parsimony results. |
| |
Keywords: | Grossulariaceae Ribes Currants gooseberries molecular phylogeny chloroplast DNA restriction site polymorphisms polymerase chain reaction (PCR) |
本文献已被 SpringerLink 等数据库收录! |
|