Library Open Repository
The major Australian cool temperate rainforest tree Nothofagus cunninghamii withstood Pleistocene glacial aridity within multiple regions: evidence from the chloroplast
Worth, JRP and Jordan, GJ and McKinnon, GE and Vaillancourt, RE (2009) The major Australian cool temperate rainforest tree Nothofagus cunninghamii withstood Pleistocene glacial aridity within multiple regions: evidence from the chloroplast. New Phytologist, 182 (2). pp. 519-532. ISSN 0028-646X
Worth_et_al_New...pdf | Request a copy
Full text restricted
Available under University of Tasmania Standard License.
Glacial aridity of the Pleistocene was inhospitable for the cool temperate rainforest tree Nothofagus cunninghamii over most of its current range in southeastern Australia, particularly in eastern Tasmania. A chloroplast DNA phylogeographic study was undertaken to investigate whether this species was likely to have survived in situ or conforms to a dispersal model of postglacial recovery.
Twenty-three chloroplast haplotypes were identified by PCR-RFLP and direct sequencing of 2164 base pairs from 213 N. cunninghamii individuals collected in a range-wide survey. Fine-scale haplotype distribution was investigated using PCR-RFLP in eastern Tasmania.
Deep chloroplast divergence occurred in N. cunninghamii. The single haplotype of the sister species, N. moorei, was nested among N. cunninghamii haplotypes. The distribution of N. cunninghamii haplotypes supports: multiple glacial refugia in coastal and inland western Tasmania, the centre of haplotype diversity; glacial survival in the central highlands of Victoria, corroborating pollen data; and the long-term occupation of eastern Tasmania because of the presence of a unique deeply diverged chloroplast lineage.
N. cunninghamii withstood glacial aridity within multiple regions in apparently non-equable climates. This finding contributes to a growing understanding of how the resilience of temperate species during glacial periods has shaped modern biota.
|Keywords:||cryptic glacial refugia, cool temperate rainforest, deep phylogeography, fine-scale structure, N. moorei, northeast Tasmania, Pleistocene, Victorian central highlands|
|Journal or Publication Title:||New Phytologist|
|Page Range:||pp. 519-532|
|Identification Number - DOI:||10.1111/j.1469-8137.2008.02761.x|
The original publication is available at
|Date Deposited:||06 May 2009 05:27|
|Last Modified:||18 Nov 2014 03:58|
|Item Statistics:||View statistics for this item|
Actions (login required)
|Item Control Page|