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Systematic implications of chloroplast DNA VARIATION IN J altomata and selected physaloid genera (Solanaceae)
Author(s) -
Mione Thomas,
Olmstead Richard C.,
Jansen Robert K.,
Anderson Gregory J.
Publication year - 1994
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1994.tb15572.x
Subject(s) - biology , physalis , polyphyly , cladogram , monophyly , botany , genus , clade , chloroplast dna , zoology , phylogenetics , genetics , gene
Chloroplast DNA restriction site data were used to assess relationships among the solanaceous genera Jaltomata, Hebecladus. Old and New World Physalis, Chamaesaracha, Leucophysalis, Margaranthus, Nicandra , and Saracha , and to assess interspecific relationships within Jaltomata. Cladograms rooted with Nicotiana tabacum were constructed with Wagner and Dollo parsimony. Strict consensus trees indicate that Hebecladus originated from within Jaltomata ; together these genera are monophyletic and constitute the recently circumscribed genus Jaltomata. There are two primary clades in Jaltomata: one a morphologically diverse group confined to western (largely Andean) South America, the Greater Antilles, and the Galapagos Islands; and the other a morphologically homogeneous group widely distributed from the southwestern United States to Bolivia. The controversial Leucophysalis viscosa , formerly treated as Jaltomata viscosa , is related to Leucophysalis, Physalis, Chamaesaracha , and Margaranthus ; it does not group with any of the sampled species of Jaltomata. Physalis appears to be polyphyletic since P. alkekengi of the Old World branches off prior to a clade including Chamaesaracha, Margaranthus , and the two New World Physalis species sampled.