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- Title
Analysis of the genus Petagnaea Caruel (Apiaceae), using new molecular and literature data.
- Authors
de Castro, Olga; Cennamo, Paola; de Luca, Paolo
- Abstract
In Southern Italy, an endemic monotypic genus belonging to family Apiaceae occurs: Petagnaea ( P. gussonei), relict of Tertiary flora, belonging to subfamily Saniculoideae. At present, P. gussonei is an endangered species and is included in various lists of species deserving special protection. The genus belongs to scapose hemicryptophytes and shares a sciaphilous habitat (hygrophilous woodland). This study is aimed at doing a complete contribution about the evolutionary history of Petagnaea, using molecular markers as plastidial DNA (cpDNA), nuclear ribosomal DNA (rDNA) and data present in literature. We used nucleotide sequences from four regions of the chloroplast genome ( rps16 intron, trnL(UAA) intron, atpB- rbcL intergenic spacer, and partial matK gene) to investigate possible haplotypes in Petagnaea populations. To have an idea of the molecular relationships of all populations of P. gussonei, the internal transcribed spacer (ITS) sequences, already employed in recent studies, were obtained for 18 populations. These sequences in combination with other Saniculoideae ITS sequences available from GenBank have been used for a further phylogenetic analysis. The results agree with the current classification of Saniculoideae in placing P. gussonei in tribe Saniculeae, since P. gussonei is in basal position to Sanicula. According to intraspecific chloroplast DNA diversity, no different haplotypes were detected. In addition to molecular data, morphology, cytology, phytochemistry and conservation status have been considered in the discussion.
- Subjects
UMBELLIFERAE; ENDEMIC plants; MEDITERRANEAN-type plants; RECOMBINANT DNA; PLANT phylogeny; CHLOROPLAST DNA; DIFFERENCES
- Publication
Plant Systematics & Evolution, 2009, Vol 278, Issue 3/4, p239
- ISSN
0378-2697
- Publication type
Article
- DOI
10.1007/s00606-008-0133-9