Open AccessPhylogenetic and biogeographical inferences for P ancratium ( A maryllidaceae), with an emphasis on the M editerranean species based on plastid sequence data
Author(s) -
De Castro Olga,
Brullo Salvatore,
Colombo Paolo,
Jury Stephen,
De Luca Paolo,
Di Maio Antonietta
Publication year - 2012
Publication title -
botanical journal of the linnean society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.872
H-Index - 68
eISSN - 1095-8339
pISSN - 0024-4074
DOI - 10.1111/j.1095-8339.2012.01268.x
Subject(s) - biology , ndhf , genus , phylogenetic tree , vicariance , evolutionary biology , clade , intergenic region , phylogenetics , maximum parsimony , plastid , biological dispersal , botany , genome , genetics , gene , chloroplast , population , demography , sociology
The phylogenetics and biogeography of Pancratium ( A maryllidaceae) were investigated, with a focus on the Mediterranean 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 ndh F and rbc L genes, the trn L (UAA) – trn F (GAA) intergenic spacer and the trn L (UAA) intron, analysing them using parsimony, likelihood and B ayesian 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 of plastid 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. © 2012 The Linnean Society of L ondon, Botanical Journal of the Linnean Society , 2012, 170 , 12–28.