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Phylogenetic relationships in Orchis and some related genera: an approach using chloroplast DNA
Author(s) -
Cozzolino Salvatore,
Aceto Serena,
Caputo Paolo,
Gaudio Luciano,
Nazzaro Roberto
Publication year - 1998
Publication title -
nordic journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.333
H-Index - 33
eISSN - 1756-1051
pISSN - 0107-055X
DOI - 10.1111/j.1756-1051.1998.tb01102.x
Subject(s) - biology , paraphyly , botany , chloroplast dna , clade , genus , orchidaceae , sister group , phylogenetic tree , zoology , genetics , gene
A chloroplast DNA restriction fragment length polymorphism analysis has been carried out on representatives species of Orchis (Orchidaceae) and of the allied genera Aceras, Dactylorhiza , and Anacamptis . One species of Cephalanthera and one of Serapias were used as outgroups. The consensus tree from a cladistic analysis showed that Orchis , as presently defined, is paraphyletic, as it contains also Aceras anthropophorum and Dactylorhiza saccifera . The genus Orchis is divided in two clades: one including O. laxiflora, O. papilionacea, O. coriophora , and O. morio in a ladderized sequence, the other showing D. saccifera at the base, followed by a clade in which a collapse of O. mascula, O. pauciflora, O. quadripunctata is sister group to a clade composed by O. italica, O. simia , and A. anthropophorum . These results, which agree to a great extent with literature evidence on chromosomes and isozymes, have been compared with various traditional systematic hypotheses for the genus.