Differential levels of genetic diversity and divergence among populations of an ancient Australian rainforest conifer, Araucaria cunninghamii

Pye, Matthew G., Henwood, Murray J., and Gadek, Paul A. (2009) Differential levels of genetic diversity and divergence among populations of an ancient Australian rainforest conifer, Araucaria cunninghamii. Plant Systematics and Evolution, 277 (3-4). pp. 173-185.

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Abstract

Historical fragmentation and subsequent isolation has affected the levels of genetic diversity in many lineages of ancient plant taxa. This study investigated the effects of historical processes on Araucaria cunninghamii (Hoop Pine), Araucariaceae, using both RAPD and ISSR markers. While most populations maintain moderate levels of diversity, there is some evidence for reduced genetic variation. Most sampled populations are significantly differentiated from each other, thereby emphasizing the high degree of population structuring in A. cunninghamii. Increased divergence among the northern Queensland populations relative to southern Queensland populations suggests historical pressures have impacted differently on extant population distribution. More research is specifically required into the biology and population demographics of Australian Araucariaceae.

Item ID: 10489
Item Type: Article (Refereed Research - C1)
Keywords: Araucaria cunninghamii; hoop pine; Araucariaceae; RAPDs; ISSRs; conifers; Southern Hemisphere; population genetics; tropical biology
ISSN: 1615-6110
Date Deposited: 20 Apr 2010 05:37
FoR Codes: 06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060310 Plant Systematics and Taxonomy @ 80%
06 BIOLOGICAL SCIENCES > 0604 Genetics > 060409 Molecular Evolution @ 20%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960806 Forest and Woodlands Flora, Fauna and Biodiversity @ 100%
Citation Count from Web of Science Web of Science 3
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