We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
The discovery and phylogenetic implications of a novel 41 bp plastid DNA deletion in wild potatoes.
- Authors
Ames, M.; Salas, A.; Spooner, D. M.
- Abstract
Insertions and deletions (indels) are common in intergenic spacer regions of plastid DNA and can provide important phylogenetic characters for closely related species. For example, a 241-bp plastid DNA deletion in the trnV-UAC/ndhC intergenic spacer region has been shown to have major phylogenetic importance in determining the origin of the cultivated potato. As part of a phylogenetic study of the wild potato Solanum series Piurana group we screened 199 accessions of 38 wild potato species in nine of the 19 tuber-bearing ( Solanum section Petota) series that have not been examined before for indels in the trnV-UAC/ ndhC intergenic spacer region. A novel 41 bp deletion (but no 241 bp deletion) was discovered for 30 accessions of three species: S. chiquidenum (5 of 10 accessions), S. chomatophilum (19 of 28), and S. jalcae (6 of 6). Accessions with and without this deletion are found throughout much of the north-south range of all three species in northern and central Peru, but not east of the Marañón River. Multivariate morphological analyses of these 44 accessions showed no morphological associations to the deletion. The results suggest extensive interspecific gene flow among these three species, or a common evolutionary history among species that have never been suggested to be interrelated.
- Subjects
PERU; PLANT phylogeny; PLASTIDS; POTATOES; SOLANUM; MULTIVARIATE analysis; PLANT morphology; PLANT evolution
- Publication
Plant Systematics & Evolution, 2007, Vol 268, Issue 1-4, p159
- ISSN
0378-2697
- Publication type
Article
- DOI
10.1007/s00606-007-0567-5