TY - JOUR
T1 - A molecular phylogeny and classification of the cteniinae, farragininae, gouiniinae, gymnopogoninae, perotidinae, and trichoneurinae (poaceae: Chloridoideae: Cynodonteae)
AU - Peterson, Paul M.
AU - Romaschenko, Konstantin
AU - Arrieta, Yolanda Herrera
PY - 2014/4/28
Y1 - 2014/4/28
N2 - The classification of twenty Cynodonteae genera (Bewsia, Craspedorhachis, Ctenium, Dignathia, Farrago, Gouinia, Gymnopogon, Latipes, Leptocarydion, Leptothrium, Lophacme, Lopholepis, Mosdenia, Perotis, Schenckochloa, Toliara, Trichoneura, Trigonochloa, Triplasis, Vaseyochloa) has been poorly understood. The goals of this study were to reconstruct the evolutionary history of the tribe Cynodonteae, emphasizing these twenty genera using molecular data with increased species sampling. A phylogenetic analysis was conducted on 159 samples, of which 94 species (140 individuals) were in the Cynodonteae, using four plastid (rpl32-trnL spacer, ndhA intron, rps16-trnK spacer, rps16 intron) and nuclear ITS 1&2 (ribosomal internal transcribed spacer regions) sequences to infer evolutionary relationships and revise the classification. Strong support was found for six lineages. Craspedorhachis, Ctenium, Dignathia, Gymnopogon, Trichoneura, and Triplasis appear monophyletic; Leptothrium is paraphyletic with Latipes inermis embedded within; Perotis is paraphyletic with Lopholepis and Toliara embedded within; and Gouinia is monophyletic with the resurrection of Schenckochloa. The molecular results support the recognition of six subtribes; five (Cteniinae, Farragininae, Gymnopogoninae, Perotidinae, Trichoneurinae) are newly escribed. A new genus, Tridentopsis, is described; five new combinations, Leptothrium inerme, Perotis arenacea, Perotis ornithocephala, Tridentopsis eragrostoides, and Tridentopsis mutica are made; and Holboellia ornithocephala is lectotypified.
AB - The classification of twenty Cynodonteae genera (Bewsia, Craspedorhachis, Ctenium, Dignathia, Farrago, Gouinia, Gymnopogon, Latipes, Leptocarydion, Leptothrium, Lophacme, Lopholepis, Mosdenia, Perotis, Schenckochloa, Toliara, Trichoneura, Trigonochloa, Triplasis, Vaseyochloa) has been poorly understood. The goals of this study were to reconstruct the evolutionary history of the tribe Cynodonteae, emphasizing these twenty genera using molecular data with increased species sampling. A phylogenetic analysis was conducted on 159 samples, of which 94 species (140 individuals) were in the Cynodonteae, using four plastid (rpl32-trnL spacer, ndhA intron, rps16-trnK spacer, rps16 intron) and nuclear ITS 1&2 (ribosomal internal transcribed spacer regions) sequences to infer evolutionary relationships and revise the classification. Strong support was found for six lineages. Craspedorhachis, Ctenium, Dignathia, Gymnopogon, Trichoneura, and Triplasis appear monophyletic; Leptothrium is paraphyletic with Latipes inermis embedded within; Perotis is paraphyletic with Lopholepis and Toliara embedded within; and Gouinia is monophyletic with the resurrection of Schenckochloa. The molecular results support the recognition of six subtribes; five (Cteniinae, Farragininae, Gymnopogoninae, Perotidinae, Trichoneurinae) are newly escribed. A new genus, Tridentopsis, is described; five new combinations, Leptothrium inerme, Perotis arenacea, Perotis ornithocephala, Tridentopsis eragrostoides, and Tridentopsis mutica are made; and Holboellia ornithocephala is lectotypified.
KW - Classification
KW - Its
KW - Phylogeny
KW - Plastid DNA sequences
KW - Tridentopsis
UR - http://www.scopus.com/inward/record.url?scp=84900031563&partnerID=8YFLogxK
U2 - 10.12705/632.35
DO - 10.12705/632.35
M3 - Artículo
SN - 0040-0262
VL - 63
SP - 275
EP - 286
JO - Taxon
JF - Taxon
IS - 2
ER -