Open AccessPolyphyly of Limoniastrum (Plumbaginaceae): evidence from DNA sequences of plastid rbc L , trn L intron and trn L‐F intergene spacer
Author(s) -
LLEDÓ MARIA DOLORES,
CRESPO MANUEL B.,
COX ANTHONY V.,
FAY MICHAEL F.,
CHASE MARK W.
Publication year - 2000
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.1095-8339.2000.tb01213.x
Subject(s) - polyphyly , biology , clade , botany , sister group , genus , subfamily , intron , synapomorphy , maximum parsimony , phylogenetic tree , internal transcribed spacer , evolutionary biology , zoology , gene , genetics
Phylogenetic relationships of Limoniastrum and other genera of subfamily Staticoideae (Plumb‐aginaceae) were studied using parsimony analysis of the plastid gene rbc L, the intron of trn L and the intergene spacer of trnL‐trn F. Our analysis showed that Limoniastrum was polyphyletic. Limoniastrum ifniense , in both rbc L and combined data analyses, is sister to Armeria and Psylliostachys , whereas in the trn L‐F (intron and spacer combined) analysis it is sister to a clade composed of Acantholimon, Dictyolimon and the remaining species of Limoniastrum . In all analyses, the five remaining species of Limoniastrum (excluding Limoniatrum ifniense ) formed a clade with two groups of species: L. monopetalum+L. guyonianum and those sometimes considered as the segregate genus Bubania ( L.feei, L. weygandiorum and L. rechingeri ). Levels of sequence divergence among these three groups of Limoniatrum were greater than for other well supported genera in the family and, in combination with morphological differences and paucity of synapomorphies, led us to conclude that separate generic status for each of the three clades is warranted.