Molecular phylogenetics and molecular clock dating of Sapindales based on plastid rbcL, atpB and trnL-trnF DNA sequences

• DOI: 10.12705/655.5
• Publication Date: 2016-10-13T05:39:38Z
• Authors: Alexandra N. Muel...; Andrea Weeks; Joshua W. Clayton; Sven Buerki; Lars Nauheimer; Yu-Chung Chiang; Sarah Cody; Susan K. Pell
• Keywords: Simaroubaceae; Burseraceae; Meliaceae

Abstract This study focuses on reconstructing the time‐calibrated phylogeny of nine families comprising order Sapindales, representing a diverse and economically important group eudicots including citrus, mahogany, tree‐of‐heaven, cashew, mango, pistachio, frankincense, myrrh, lychee, rambutan, maple, buckeye. We sampled three molecular markers, plastid genes rbcL atpB, trnL‐trnLF spacer region, covered one‐third generic diversity Sapindales. All markers produced congruent phylogenies using maximum likelihood Bayesian methods for set taxa that included outgroups, i.e., members closely related orders Brassicales Malvales, more distantly Crossosomatales, Ranunculales, Ceratophyllales. results confirmed current delimitation within monophyly order. Concerning inter‐familial relationships, Biebersteiniaceae Nitrariaceae formed basal grade (or sister clade) to rest Sapindales with moderate support. The relationship Kirkiaceae Anacardiaceae Burseraceae was strongly supported. clade combining as well Meliaceae, Simaroubaceae, Rutaceae each received strong between Meliaceae Simaroubaceae moderately position Sapindaceae could not be resolved confidence. separated from their clade, in Early Cretaceous at ca. 112 Ma, diversified into 105 Ma until 87 during Late times. have longest stem lineages observed possibly indicating extinction may had greater role shaping extant than elsewhere Divergence larger (Anacardiaceae, Burseraceae, Rutaceae, Sapindaceae, Simaroubaceae) started Cretaceous, extending Paleogene Neogene.