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Chloroplast DNA phylogeography of Eucalyptus globulus

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posted on 2023-05-16, 13:16 authored by Jules FreemanJules Freeman, Jackson, HD, Dorothy SteaneDorothy Steane, McKinnon, GE, Greg DutkowskiGreg Dutkowski, Bradley PottsBradley Potts, Rene VaillancourtRene Vaillancourt
The pattern of variability in chloroplast DNA (cpDNA) of Eucalyptus globulus Labill. (Myrtaceae) was studied using 270 samples from southern Australia. Forty variable sequence characters were found, defining 105 haplotypes. Haplotypes were assigned to three major cpDNA clades based on their phylogeny. The pattern of cpDNA variation did not conform to subspecies boundaries; however, there was a strong geographic structure to the distribution of clades and haplotypes. One clade (JC) was geographically central and widespread and was found in 163 samples from Tasmania and continental Australia. Less-common clades occurred in more localised regions - southern (Js, 77 samples) and eastern (Jet, 12 samples). The distribution of the Jet and Js clades coincides with hypothesised glacial refugia in Tasmania, suggesting limited seed-mediated dispersal since deglaciation.

History

Publication title

Australian Journal of Botany

Volume

49

Issue

5

Pagination

585-596

ISSN

0067-1924

Department/School

School of Natural Sciences

Publisher

CSIRO

Place of publication

Collingwood Australia

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the environmental sciences

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