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dc.contributor.authorComer, Jason Ray
dc.date.accessioned2016-04-01T04:30:18Z
dc.date.available2016-04-01T04:30:18Z
dc.date.issued2015-12
dc.identifier.othercomer_jason_r_201512_phd
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/comer_jason_r_201512_phd
dc.identifier.urihttp://hdl.handle.net/10724/34995
dc.description.abstract• Premise of the study: Several studies have incorporated molecular and morphological data to study the phylogeny of the palms (Arecaceae), but some relationships within the family remain ambiguous—particularly those within Arecoideae, the most diverse subfamily including coconut and oil palm. Here, two next-generation, targeted plastid-enrichment methods were compared and used to elucidate Arecoideae phylogeny. • Methods: Next-generation sequencing techniques were used to generate a plastid genome data set. Long range PCR and hybrid gene capture were used to enrich for chloroplast targets. Ten taxa were enriched using both methods for comparison. Chloroplast sequence data were generated for 31 representatives of the 14 Arecoideae tribes and fi ve outgroup taxa. The phylogeny was reconstructed using maximum likelihood, maximum parsimony, and Bayesian analyses. • Key results: Long range PCR and hybrid gene capture both enriched the plastid genome and provided similar sequencing coverage. Subfamily Arecoideae was resolved as monophyletic with tribe Chamaedoreeae as the earliest-diverging lineage, implying that the development of fl owers in triads defi nes a synapomorphy for the Arecoideae clade excluding Chamaedoreeae. Three major clades within this group were recovered: Roystoneeae/Reinhardtieae/Cocoseae (RRC), Areceae/Euterpeae/Geonomateae/Leopoldinieae/Manicarieae/Pelagodoxeae (core arecoids), and Podococceae/Oranieae/Sclerospermeae (POS). An Areceae + Euterpeae clade was resolved within the core arecoids. The POS clade was sister to a RRC + core arecoids clade, implying a shared ancestral area in South America for these three clades. • Conclusions: The plastome phylogeny recovered here provides robust resolution of previously ambiguous studies and new insights into palm evolution.
dc.languageeng
dc.publisheruga
dc.rightspublic
dc.subjectArecaceae
dc.subjectArecoideae
dc.subjectgene capture
dc.subjectnext-generation sequencing
dc.subjectoil palm
dc.subjectphylogenetics
dc.titleSystematics of the palm subfamily Arecoideae (Arecaceae) based on chloroplast and nuclear sequence data
dc.typeDissertation
dc.description.degreePhD
dc.description.departmentPlant Biology
dc.description.majorPlant Biology
dc.description.advisorJames Leebens-Mack
dc.description.advisorWendy Zomlefer
dc.description.committeeJames Leebens-Mack
dc.description.committeeWendy Zomlefer
dc.description.committeeDavid Giannasi
dc.description.committeeShu-Mei Chang


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