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Resolving relationships within Valerianaceae (Dipsacales): New insights and hypotheses from Low-Copy Nuclear Regions

Title data

Bell, Charles D. ; Calderon, Gloria ; Gonzales, Lauren ; Scholz, Andrea ; Liede-Schumann, Sigrid:
Resolving relationships within Valerianaceae (Dipsacales): New insights and hypotheses from Low-Copy Nuclear Regions.
In: Systematic Botany. Vol. 40 (2015) Issue 1 . - pp. 327-335.
ISSN 1548-2324
DOI: https://doi.org/10.1600/036364415x686611

Abstract in another language

Primers from a recently published study that identified a set of low-copy nuclear genes (LCNG) in multiple angiosperms were used to obtain sequence data from three LCNG (Chlp,Agt1,and Hmgs) for phylogenetic inference at the species level. The phylogenetic utility of each of these markers was compared to ITS and seven chloroplast loci (trnL, trnG-S, ycf5, accD, rpoC1, trnK intron, psbM-trnD intergenic spacer) widely used in phylogenetic analyses. Here we use Valerianaceae as an example for two reasons: 1) the group has a well-supported “backbone” phylogeny based on numerous molecular markers; and 2) there are several species groups (e.g. the South American taxa) that have been particularly difficult to resolve, potentially due to a rapid or recent radiation. Although these new markers added nucleotide characters, they did not provide significant phylogenetic information to resolve relationships among closely related species of Valerianaceae. Likewise, relationships among some of the major clades of Valerianaceae are still not resolved with much certainty. This study indicates that several of these nuclear markers provide a significant increase in phylogenetic signal compared to traditional chloroplast markers, but information content within these regions is most useful at broader-scale phylogenetic levels. Advances in “next-generation” sequencing technologies may ultimately make their utility obsolete.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER127663
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Systematics
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Systematics > Chair Plant Systematics - Univ.-Prof. Dr. Sigrid Liede-Schumann
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 06 Jul 2015 10:24
Last Modified: 06 Jul 2015 10:24
URI: https://eref.uni-bayreuth.de/id/eprint/15793