Oberprieler, Christoph and Dietz, Lena and Harlander, Christine and Heilmann, Joerg (2013) Molecular and phytochemical evidence for the taxonomic integrity of Salix alba, S-fragilis, and their hybrid S. x rubens (Salicaceae) in mixed stands in SE Germany. PLANT SYSTEMATICS AND EVOLUTION, 299 (6). pp. 1107-1118. ISSN 0378-2697,
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AFLP fingerprinting, nrDNA sequencing, and HPLC of phenolic compounds from bark samples was used to assess the intensity of hybridisation in two mixed stands of Salix alba, S. fragilis, and their hybrid S. x rubens (Salicaceae) along the Danube in the vicinity of Regensburg (SE Germany). AFLP analyses of 130 individuals from two mixed and two pure strands of the parental species resulted in a matrix of 337 polymorphic loci that was analysed with Bayesian cluster algorithms implemented in the software programmes Structure and NewHybrids. The results, together with sequence polymorphisms of the nrDNA ITS1 + 5.8S region, indicate that the three taxa are distinctly separated and that only a few F2-hybrids and no backcrosses to the parental species are present in the surveyed mixed stands. These findings were corroborated by HPLC studies of the phenolic compounds from bark samples that were carried out for the same individuals. A multivariate statistical analysis of relative peak areas of chromatograms (PCA, principal component analysis) indicates the clear separation of parental and the intermediate position of S. x rubens individuals.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MULTILOCUS GENOTYPE DATA; AFLP; HYBRIDIZATION; POPULATION; RHODODENDRON; COMPOSITAE; INFERENCE; MARKERS; POLLINATION; EVOLUTION; AFLP fingerprinting; Chemical defence; Hybridisation; nrDNA ITS; Phenolic compounds; Salicaceae; Salix; Willow |
| Subjects: | 500 Science > 580 Botanical sciences 600 Technology > 615 Pharmacy |
| Divisions: | Biology, Preclinical Medicine > Institut für Pflanzenwissenschaften > Group Plant Systematics and Evolution (Prof. Dr. Christoph Oberprieler) Chemistry and Pharmacy > Institute of Pharmacy > Pharmaceutical Biology (Prof. Heilmann) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 08 Apr 2020 09:17 |
| Last Modified: | 08 Apr 2020 09:17 |
| URI: | https://pred.uni-regensburg.de/id/eprint/16597 |
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