A phylogenetic analysis of tribe Areceae (Arecaceae) using two low-copy nuclear genes
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A phylogenetic study of the largest tribe of palms, the Areceae, was conducted using sequences of two low-copy nuclear genes. Previous morphological and plastid DNA studies have not supported the monophyly of the tribe, but have placed its members in a large clade that includes the monophyletic tribes Geonomeae, Cocoeae, Podococceae, and Hyophorbeae. We analyzed this large clade to test the monophyly of tribe Areceae with nuclear data, to explore relationships among its subtribes, and to identify other monophyletic groups. For 54 palm species, including members of all 17 subtribes of tribe Areceae, we sequenced regions of the malate synthase (MS) and phosphoribulokinase (PRK) genes. Simultaneous analysis of these regions revealed 52 shortest trees, all of which resolved tribe Areceae as polyphyletic. Subtribes Iguanurinae, Dypsidinae, Oncospermatinae, and Arecinae were also resolved as polyphyletic. A clade of Indo-Pacific taxa was resolved with strong support, and would be a suitable target for more focused study.
- A phylogenetic analysis of tribe Areceae (Arecaceae) using two low-copy nuclear genes
Plant Systematics and Evolution
Volume 236, Issue 1-2 , pp 1-17
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- Key words: Palmae, Arecoideae, Phosphoribulo-kinase, PRK, Malate Synthase, MS, DNA sequencing, Molecular Phylogenetics.
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