Phylogeny of New World Paspalum (Paniceae, Panicoideae, Poaceae) based on chloroplast and nuclear markers

1.SCATAGLINI M.A., F. O. ZULOAGA, L. M. GIUSSANI, S.S. DENHAM, & O. MORRONE.

PLANT SYSTEMATICS AND EVOLUTION

SPRINGER WIEN

Lugar: Viena; Año: 2014 vol. 300 p. 1051 - 1070

0378-2697

Phylogenetic analyses of 131 terminals of Paspalum and related genera, based on both plastid and nuclearmarkers, were performed under maximum parsimony and Bayesian methods. The total evidence analysesgenerated a hypothesis showing that Paspalum would be monophyletic if Spheneria, Thrasyopsis andReimarochloa are included within the genus. Paspalum inaequivalve and P. microstachyum, two species ofthe Inaequivalvia group were related to genus Anthaenantiopsis, excluded from Paspalum, or nested withinit by plastid and nuclear markers, respectively. Subgenera Anachyris and Harpostachys were partiallyrecovered as monophyletic assemblages, while subg. Ceresia and Paspalum resolved as polyphyletic. Withinsubgenus Paspalum, some informal groups were recovered as monophyletic, while others were resolved asparaphyletic or polyphyletic. Phylogenetic relationships among species of Paspalum were partially recoveredpossibly due to reticulation events among species, autopolyploidization and apomixis; all these processesbeing common in Paspalum, thus obscuring the infrageneric classification.