Journal
FUNGAL ECOLOGY
Volume 13, Issue -, Pages 23-32Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.funeco.2014.08.005
Keywords
Australia; Glacial refugia; Myrtle beech; Phylogeography
Funding
- Jim Ross PhD Scholarship from the Cybec foundation
- Holsworth Wildlife Research Endowment
- Albert Shimmins Writing-up Award
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The ectomycorrhizal fungus Laccaria sp. A is restricted to temperate rainforest of southeast Australia, associated with its host tree Nothofagus cunninghamii. Eight mitochondrial microsatellite markers were used to investigate the population genetic structure of L. sp. A across its distribution in Tasmania and Victoria. The highest allelic diversity was found in Tasmania, which appeared to contain a panmictic population, whereas the more fragmented Victorian populations were characterized by low allelic diversity and differentiation between east and west. There is evidence of glacial refugia in the west and the northeast of Tasmania, and in Victoria in the Otway Ranges and Central Highlands, with postglacial migration into the Strzelecki Ranges. Narrow host-specificity may have contributed to the presence of population structure in this fungus. Allelic diversity patterns in L. sp. A are largely congruent with diversity patterns already established in populations of its host, N. cunninghamii. (C) 2014 Elsevier Ltd and The British Mycological Society.
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