Artículo
Evolutionary relationships in Panicoid grasses based on plastome phylogenomics (Panicoideae; Poaceae)
Burke, Sean V.; Wysocki, William P.; Zuloaga, Fernando Omar
; Craine, Joseph M.; Pires, J. Chris; Edger, Patrick P.; Mayfield Jones, Dustin; Clark, Lynn G.; Kelchner, Scot A.; Duvall, Melvin R.
Fecha de publicación:
06/2016
Editorial:
BioMed Central
Revista:
BMC Plant Biology
ISSN:
1471-2229
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Background: Panicoideae are the second largest subfamily in Poaceae (grass family), with 212 genera and approximately 3316 species. Previous studies have begun to reveal relationships within the subfamily, but largely lack resolution and/or robust support for certain tribal and subtribal groups. This study aims to resolve these relationships, as well as characterize a putative mitochondrial insert in one linage. Results: 35 newly sequenced Panicoideae plastomes were combined in a phylogenomic study with 37 other species: 15 Panicoideae and 22 from outgroups. A robust Panicoideae topology largely congruent with previous studies was obtained, but with some incongruences with previously reported subtribal relationships. A mitochondrial DNA (mtDNA) to plastid DNA (ptDNA) transfer was discovered in the Paspalum lineage. Conclusions: The phylogenomic analysis returned a topology that largely supports previous studies. Five previously recognized subtribes appear on the topology to be non-monophyletic. Additionally, evidence for mtDNA to ptDNA transfer was identified in both Paspalum fimbriatum and P. dilatatum, and suggests a single rare event that took place in a common progenitor. Finally, the framework from this study can guide larger whole plastome sampling to discern the relationships in Cyperochloeae, Steyermarkochloeae, Gynerieae, and other incertae sedis taxa that are weakly supported or unresolved.
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Articulos(IBODA)
Articulos de INST.DE BOTANICA DARWINION (I)
Articulos de INST.DE BOTANICA DARWINION (I)
Citación
Burke, Sean V.; Wysocki, William P.; Zuloaga, Fernando Omar; Craine, Joseph M.; Pires, J. Chris; et al.; Evolutionary relationships in Panicoid grasses based on plastome phylogenomics (Panicoideae; Poaceae); BioMed Central; BMC Plant Biology; 16; 6-2016; 1-11; 140
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