Vitaceae-Molecular evolution with a focus on the Australian Radiation

Rossetto, Maurizio, Jackes, Betsy, and Crayn, Darren (2006) Vitaceae-Molecular evolution with a focus on the Australian Radiation. In: Sharma, A.K., and Sharma, Archana, (eds.) Plant Genome: biodiversity and evolution: Phanerogams (Angiosperm-Dicotyledons). Plant Genome, 1 (Part C). Science Publishers, pp. 269-292.

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Abstract

An updated analysis of relationships within Vitaceae (including Leea) is presented, based on sequence data from the plastid trnL (UAA) intron region and the ITSI region of nrDNA. Several key taxa are included that had been missing earlier. The results of Bayesian and parsimony analyses of these data confirm the polyphyletic nature of Australian Cissus. Cissus opaca and Clematicissus form a strongly supported clade distinct from Rhoicissus and Ci. tweediana (with which they share some morphological similarities). The sister relationship between the Australian Cissus clade and Vitis is confirmed, and Nothocissus is shown to be embedded within Cissus. A preliminary divergence time analysis was performed using a single fossil-based estimate of the age of the most recent common ancestor of the Cissus/Vitis clade to calibrate molecular evolutionary rates. Two Australian endemic clades were shown to have arisen after the separation of Australia from Antarctica. A complete phylogenetic reclassification of Vltaceae will require the placement of several key taxa and further sampling within Vitis and Cissus.

Item ID: 18034
Item Type: Book Chapter (Research - B1)
Keywords: Cissus, cpDNA, nrDNA, molecular dating, phylogeny
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ISSN: 978-1-57808-419-7
Funders: ABRS
Date Deposited: 09 Nov 2012 02:56
FoR Codes: 06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060310 Plant Systematics and Taxonomy @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 100%
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