Phylogenetic relationships in Sarraceniaceae based on rbcL and ITS sequences

• Published in: Systematic botany 1996-04, Vol.21 (2), p.121-134
• Main Authors: Bayer, R.J. (University of Alberta, Edmonton, Alberta, Canada.), Hufford, L, Soltis, D.E
• Format: Article
• Language: English
• Subjects: ADN; Biological taxonomies; Botanical gardens; CHLOROPLASTE; CLOROPLASTO; FILOGENIA; GENE; Genera; GENES; GENETICA; GENETIQUE; Internal transcribed spacers; NOYAU CELLULAIRE; NUCLEO; Parsimony; Phylogenetics; PHYLOGENIE; Phylogeny; Plants; RIBOSOMAS; RIBOSOME; SARRACENIACEAE; SECUENCIA NUCLEOTIDICA; SEQUENCE NUCLEOTIDIQUE; Taxa; TAXONOMIA; TAXONOMIE; We they distinction
• ISSN: 0363-6445; 1548-2324
• DOI: 10.2307/2419743

Sarraceniaceae, a New World family of carnivorous plants, consist of Sarracenia, Heliamphora, and the monotypic Darlingtonia. Despite extensive interest in these plants, few explicit phylogenetic hypotheses are available for the family. We investigate phylogenetic relationships in the family using sequences of the internal transcribed spacer regions of nuclear ribosomal DNA (ITS) and of the chloroplast gene rbcL. One representative of each genus was sequenced for rbcL, whereas representatives of all species in the family, except for H. heterodoxa and H. ionasii, were sequenced for ITS. Both the ITS- and rbcL-based phylogenies demonstrate that Sarracenia and Heliamphora form a monophyletic group that is the sister group of Darlingtonia. Sarracenia and Heliamphora are each well supported monophyletic genera. In our restricted sampling of Heliamphora, H. nutans is the sister of H. minor and H. tatei. Our results provide little resolution of relationships among species of Sarracenia, but identify one clade that consists of all species except S. alata. Within this clade are two smaller clades comprising:--1) S. purpurea and S. leucophylla,--and--2) S. flava, S. minor, and S. psittacina