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Molecular phylogeny and systematics of the highly polymorphic Rumex bucephalophorus complex (Polygonaceae).
- Source :
-
Molecular phylogenetics and evolution [Mol Phylogenet Evol] 2011 Dec; Vol. 61 (3), pp. 659-70. Date of Electronic Publication: 2011 Aug 16. - Publication Year :
- 2011
-
Abstract
- Rumex bucephalophorus is a very polymorphic species that has been subjected to various taxonomic studies in which diverse infraspecific taxa have been recognised on the basis of diaspore traits. In this study we used molecular markers (ITS and AFLP) to explore this remarkable diversity, to test previous hypotheses of classification, and attempt to explain biogeographic patterns. Results show that R. bucephalophorus forms a monophyletic group in which diversification began around 4.2 Mya, at the end of Messinian Salinity Crisis. The two molecular markers clearly show a deep divergence separating subsp. bucephalophorus from all other subspecific taxa, among which subsp. canariensis also constitutes a separate and well distinguishable unit. In contrast, subspecies hispanicus and subsp. gallicus constitute a monophyletic group in which three subgroups can be recognised: subsp. hispanicus, subsp. gallicus var. gallicus and subsp. gallicus var. subaegeus. However, these three subgroups are not clearly distinguished genetically or morphologically, so that in formal classification it would be preferable to treat them at the varietal level.<br /> (Copyright © 2011 Elsevier Inc. All rights reserved.)
- Subjects :
- Amplified Fragment Length Polymorphism Analysis
Bayes Theorem
Cell Nucleus genetics
Cluster Analysis
DNA, Intergenic genetics
DNA, Plant genetics
Genetics, Population
Geography
Molecular Sequence Data
Morocco
Principal Component Analysis
Seed Dispersal genetics
Spain
Classification
Phylogeny
Polymorphism, Genetic
Rumex classification
Rumex genetics
Subjects
Details
- Language :
- English
- ISSN :
- 1095-9513
- Volume :
- 61
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Molecular phylogenetics and evolution
- Publication Type :
- Academic Journal
- Accession number :
- 21864695
- Full Text :
- https://doi.org/10.1016/j.ympev.2011.08.005