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What does population structure analysis reveal about the Pterostylis longifolia complex (Orchidaceae)?
Citation
Janes, JK and Steane, DA and Vaillancourt, RE, What does population structure analysis reveal about the Pterostylis longifolia complex (Orchidaceae)?, Ecology and Evolution, 2, (11) pp. 2631-2644. ISSN 2045-7758 (2012) [Refereed Article]
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Copyright Statement
Licenced under Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0) http://creativecommons.org/licenses/by-nc/3.0/
DOI: doi:10.1002/ece3.376
Abstract
Morphologically similar groups of species are common and pose significant
challenges for taxonomists. Differences in approaches to classifying unique species
can result in some species being overlooked, whereas others are wrongly
conserved. The genetic diversity and population structure of the Pterostylis longifolia
complex (Orchidaceae) in Tasmania was investigated to determine if four
species, and potential hybrids, could be distinguished through genomic AFLP
and chloroplast restriction-fragment-length polymorphism (RFLP) markers.
Analysis of molecular variance (AMOVA) results indicated that little genetic
variation was present among taxa, whereas PCoA analyses revealed genetic
variation at a regional scale irrespective of taxa. Population genetic structure
analyses identified three clusters that correspond to regional genetic and single
taxon-specific phenotypic variation. The results from this study suggest that
"longifolia" species have persisted throughout the last glacial maximum in Tasmania
and that the complex may be best treated as a single taxon with several
morphotypes. These results could have serious evolutionary and conservation
implications as taxonomic changes could result in the instatement of a single,
widespread taxon in which rarer morphotypes are not protected.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | orchid, rare, endangered |
| Research Division: | Biological Sciences |
| Research Group: | Genetics |
| Research Field: | Population, Ecological and Evolutionary Genetics |
| Objective Division: | Environment |
| Objective Group: | Flora, Fauna and Biodiversity |
| Objective Field: | Flora, Fauna and Biodiversity at Regional or Larger Scales |
| UTAS Author: | Janes, JK (Ms Jasmine Janes) |
| UTAS Author: | Steane, DA (Dr Dorothy Steane) |
| UTAS Author: | Vaillancourt, RE (Professor Rene Vaillancourt) |
| ID Code: | 80176 |
| Year Published: | 2012 |
| Funding Support: | Australian Research Council (DP0557260) |
| Web of Science® Times Cited: | 6 |
| Deposited By: | Plant Science |
| Deposited On: | 2012-10-24 |
| Last Modified: | 2017-11-03 |
| Downloads: | 303 View Download Statistics |
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