TY - JOUR
T1 - Phylogenetic and biogeographical inferences forPancratium (Amaryllidaceae), with an emphasis on theMediterranean species based on plastid sequence data
AU - Colombo, Paolo
AU - Di Maio, Antonietta
AU - De Castro, Olga
AU - Brullo, Salvatore
AU - Jury, Stephen
AU - De Luca, Paolo
PY - 2012
Y1 - 2012
N2 - The phylogenetics and biogeography of Pancratium (Amaryllidaceae) were investigated, with a focus on theMediterranean and adjacent areas, with the aim of contributing new information towards a better understanding of the evolutionary history of the genus and the taxonomic placement of P. linosae and P. hirtum. To address these questions, we sequenced four plastid DNA markers: the ndhF and rbcL genes, the trnL(UAA)–trnF(GAA) intergenic spacer and the trnL(UAA) intron, analysing them using parsimony, likelihood and Bayesian approaches. The results show that the relationships among the majority of the species are resolved; however, the relationships of one of the major clades of the genus are unresolved compared with the others. The phylogenetic and the dispersal–vicariance analyses show that Pancratium appears as a well-structured group with interesting patterns of speciation. Notably, P. arabicum and P. linosae fall within the P. maritimum complex. In addition, P. hirtum is identical, in terms ofplastid DNA sequences, to the P. trianthum accessions. The results provide new insights and help to formulate new working hypotheses for evolutionary biology of the genus.
AB - The phylogenetics and biogeography of Pancratium (Amaryllidaceae) were investigated, with a focus on theMediterranean and adjacent areas, with the aim of contributing new information towards a better understanding of the evolutionary history of the genus and the taxonomic placement of P. linosae and P. hirtum. To address these questions, we sequenced four plastid DNA markers: the ndhF and rbcL genes, the trnL(UAA)–trnF(GAA) intergenic spacer and the trnL(UAA) intron, analysing them using parsimony, likelihood and Bayesian approaches. The results show that the relationships among the majority of the species are resolved; however, the relationships of one of the major clades of the genus are unresolved compared with the others. The phylogenetic and the dispersal–vicariance analyses show that Pancratium appears as a well-structured group with interesting patterns of speciation. Notably, P. arabicum and P. linosae fall within the P. maritimum complex. In addition, P. hirtum is identical, in terms ofplastid DNA sequences, to the P. trianthum accessions. The results provide new insights and help to formulate new working hypotheses for evolutionary biology of the genus.
KW - biogeography – chloroplast DNA – dispersal-vicariance analysis – Pancratium
– phylogeny.
KW - biogeography – chloroplast DNA – dispersal-vicariance analysis – Pancratium
– phylogeny.
UR - http://hdl.handle.net/10447/66431
M3 - Article
VL - 170
SP - 12
EP - 28
JO - Botanical Journal of the Linnean Society
JF - Botanical Journal of the Linnean Society
SN - 0024-4074
ER -