TY - JOUR
T1 - A phylogenetic analysis of palm subtribe Archontophoenicinae (Arecaceae) based on 14 DNA regions
AU - Domenech, Boris
AU - Asmussen-Lange, Conny Bruun
AU - Baker, William J.
AU - Alapetite, Elodie
AU - Pintaud, Jean-Christophe
AU - Nadot, Sophie
PY - 2014/8
Y1 - 2014/8
N2 - Subtribe Archontophoenicinae belongs to Areceae, the largest of all palm tribes. It includes 15 species distributed in five genera, all found in the south-western Pacific Region. Archontophoenicinae are rather homogeneous in morphology, making phylogenetic relationships problematic to reconstruct using morphological characters. In this study we investigated phylogenetic relationships in Archontophoenicinae based on all 15 species of the subtribe, using a combination of nine plastid and five nuclear DNA sequence markers. The plastid regions used were the coding rbcL, matK, ndhF and rpoC1 (exon 2) and the non-coding rps16 intron, atpF-atpH, psbK-psbI, trnL-trnF and trnQ-rps16. The nuclear regions used were AG1, BRSC, ITS2, PRK and RPB2, which have all proved useful in palm systematics. We compared the phylogenetic hypotheses resulting from the plastid versus nuclear datasets, and combined both datasets to retrieve as much phylogenetic information as possible. Our results strongly support a clade composed of all species of Archontophoenix, Actinokentia, Chambeyronia and Kentiopsis, but raise the question of whether Actinorhytis, the fifth genus, should remain in Archontophoenicinae. Interspecific relationships in 'core Archontophoenicinae' still remain incompletely resolved, despite the gene and taxon sampling being substantially greater than in previous studies, and question the monophyly of the New Caledonian genera Chambeyronia and Kentiopsis.
AB - Subtribe Archontophoenicinae belongs to Areceae, the largest of all palm tribes. It includes 15 species distributed in five genera, all found in the south-western Pacific Region. Archontophoenicinae are rather homogeneous in morphology, making phylogenetic relationships problematic to reconstruct using morphological characters. In this study we investigated phylogenetic relationships in Archontophoenicinae based on all 15 species of the subtribe, using a combination of nine plastid and five nuclear DNA sequence markers. The plastid regions used were the coding rbcL, matK, ndhF and rpoC1 (exon 2) and the non-coding rps16 intron, atpF-atpH, psbK-psbI, trnL-trnF and trnQ-rps16. The nuclear regions used were AG1, BRSC, ITS2, PRK and RPB2, which have all proved useful in palm systematics. We compared the phylogenetic hypotheses resulting from the plastid versus nuclear datasets, and combined both datasets to retrieve as much phylogenetic information as possible. Our results strongly support a clade composed of all species of Archontophoenix, Actinokentia, Chambeyronia and Kentiopsis, but raise the question of whether Actinorhytis, the fifth genus, should remain in Archontophoenicinae. Interspecific relationships in 'core Archontophoenicinae' still remain incompletely resolved, despite the gene and taxon sampling being substantially greater than in previous studies, and question the monophyly of the New Caledonian genera Chambeyronia and Kentiopsis.
U2 - 10.1111/boj.12179
DO - 10.1111/boj.12179
M3 - Journal article
SN - 0024-4074
VL - 175
SP - 469
EP - 481
JO - Botanical Journal of the Linnean Society
JF - Botanical Journal of the Linnean Society
IS - 4
ER -