Clarification of basal relationships in Rubus (Rosaceae) and the origin of Rubus chamaemorus
Determination of phylogenetic relationships among ancestral species of Rubus has been elusive. Most Rubus species (including blackberries and raspberries), representing nine of the 12 subgenera, occur in a large, well supported clade named 'A' for reference). The remaining nine species are...
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ftwesternkent:oai:digitalcommons.wku.edu:theses-1253 2023-05-15T18:07:47+02:00 Clarification of basal relationships in Rubus (Rosaceae) and the origin of Rubus chamaemorus Michael, Karen 2006-12-01T08:00:00Z application/pdf https://digitalcommons.wku.edu/theses/250 https://digitalcommons.wku.edu/cgi/viewcontent.cgi?article=1253&context=theses unknown TopSCHOLAR® https://digitalcommons.wku.edu/theses/250 https://digitalcommons.wku.edu/cgi/viewcontent.cgi?article=1253&context=theses Masters Theses & Specialist Projects Fruit Science Medical Sciences text 2006 ftwesternkent 2022-12-11T11:56:49Z Determination of phylogenetic relationships among ancestral species of Rubus has been elusive. Most Rubus species (including blackberries and raspberries), representing nine of the 12 subgenera, occur in a large, well supported clade named 'A' for reference). The remaining nine species are excluded from this group and represent three subgenera: subg. Anoplobatus (R. bartonianus, R. deliciosus, R. neomexicanus, R. odoratus, R. parviflorus, R. trilobus), subg. Chamaemorus (R. chamaemorus), and subg. Dalibarda (R. lasiococcus, R.pedatus). In addition, Rubus dalibarda L. is often treated in its own monotypic genus as Dalibarda repens L. Phylogenetic analyses of DNA sequence data from chloroplast regions and the nuclear ribosomal DNA internal transcribed spacer ITS 1 - 5.8S - ITS 2; ITS) region have not resolved basal relationships in Rubus and the position of Dalibarda repens has varied from being the sister group to Rubus to nested within it. However, monophyly of American subg. Anoplobatus species is supported by both genomic regions. Our goal was to clarify ancestral relationships, investigate the position of Dalibarda repens relative to Rubus, and examine the origin of the circumboreal, octoploid species R. chamaemorus using sequence data from one additional chloroplast DNA region, trnS-trnG, and the singlecopy nuclear gene Granule-Bound Starch Synthase (GBSSI-1). Parsimony analyses of trnS-trnG sequences indicate a basal trichotomy, while R.chamaemorus is strongly supported as sister to R. pedatus. A combined cpDNA (trnS-trnG and three other regions) parsimony analysis indicates that subg. Anoplobatus is sister to clade A, and strongly supports Dalibarda repens as sister to R. lasiococcus. This suggests that Dalibarda repens be classified as R. dalibarda consistent with Linnaeus (1762) and Focke (1910). Parsimony analyses of GBSSI-1 sequences result in a large polytomy and do not recover clade A. The presence of three (GBSSI-la, GBSSI-1 (3 and GBSSI-ly) putative forms of the gene is observed. However, separate ... Text Rubus chamaemorus Western Kentucky University (WKU): TopScholar |
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ftwesternkent |
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Fruit Science Medical Sciences |
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Fruit Science Medical Sciences Michael, Karen Clarification of basal relationships in Rubus (Rosaceae) and the origin of Rubus chamaemorus |
topic_facet |
Fruit Science Medical Sciences |
description |
Determination of phylogenetic relationships among ancestral species of Rubus has been elusive. Most Rubus species (including blackberries and raspberries), representing nine of the 12 subgenera, occur in a large, well supported clade named 'A' for reference). The remaining nine species are excluded from this group and represent three subgenera: subg. Anoplobatus (R. bartonianus, R. deliciosus, R. neomexicanus, R. odoratus, R. parviflorus, R. trilobus), subg. Chamaemorus (R. chamaemorus), and subg. Dalibarda (R. lasiococcus, R.pedatus). In addition, Rubus dalibarda L. is often treated in its own monotypic genus as Dalibarda repens L. Phylogenetic analyses of DNA sequence data from chloroplast regions and the nuclear ribosomal DNA internal transcribed spacer ITS 1 - 5.8S - ITS 2; ITS) region have not resolved basal relationships in Rubus and the position of Dalibarda repens has varied from being the sister group to Rubus to nested within it. However, monophyly of American subg. Anoplobatus species is supported by both genomic regions. Our goal was to clarify ancestral relationships, investigate the position of Dalibarda repens relative to Rubus, and examine the origin of the circumboreal, octoploid species R. chamaemorus using sequence data from one additional chloroplast DNA region, trnS-trnG, and the singlecopy nuclear gene Granule-Bound Starch Synthase (GBSSI-1). Parsimony analyses of trnS-trnG sequences indicate a basal trichotomy, while R.chamaemorus is strongly supported as sister to R. pedatus. A combined cpDNA (trnS-trnG and three other regions) parsimony analysis indicates that subg. Anoplobatus is sister to clade A, and strongly supports Dalibarda repens as sister to R. lasiococcus. This suggests that Dalibarda repens be classified as R. dalibarda consistent with Linnaeus (1762) and Focke (1910). Parsimony analyses of GBSSI-1 sequences result in a large polytomy and do not recover clade A. The presence of three (GBSSI-la, GBSSI-1 (3 and GBSSI-ly) putative forms of the gene is observed. However, separate ... |
format |
Text |
author |
Michael, Karen |
author_facet |
Michael, Karen |
author_sort |
Michael, Karen |
title |
Clarification of basal relationships in Rubus (Rosaceae) and the origin of Rubus chamaemorus |
title_short |
Clarification of basal relationships in Rubus (Rosaceae) and the origin of Rubus chamaemorus |
title_full |
Clarification of basal relationships in Rubus (Rosaceae) and the origin of Rubus chamaemorus |
title_fullStr |
Clarification of basal relationships in Rubus (Rosaceae) and the origin of Rubus chamaemorus |
title_full_unstemmed |
Clarification of basal relationships in Rubus (Rosaceae) and the origin of Rubus chamaemorus |
title_sort |
clarification of basal relationships in rubus (rosaceae) and the origin of rubus chamaemorus |
publisher |
TopSCHOLAR® |
publishDate |
2006 |
url |
https://digitalcommons.wku.edu/theses/250 https://digitalcommons.wku.edu/cgi/viewcontent.cgi?article=1253&context=theses |
genre |
Rubus chamaemorus |
genre_facet |
Rubus chamaemorus |
op_source |
Masters Theses & Specialist Projects |
op_relation |
https://digitalcommons.wku.edu/theses/250 https://digitalcommons.wku.edu/cgi/viewcontent.cgi?article=1253&context=theses |
_version_ |
1766180023204577280 |