Journal
MOLECULAR PHYLOGENETICS AND EVOLUTION
Volume 90, Issue -, Pages 1-19Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ympev.2015.04.016
Keywords
Leguminosae; Papilionoideae; Phaseoleae; Phylogeny; Diocleinae
Funding
- Programa de Pesquisa em Biodiversidade do Semi-arido (PPBIO)
- Sistema Nacional de Pesquisa em Biodiversidade [SISBIOTA CNPq 563084/2010-3/FAPESB PES0053/2011]
- PRONEX [FAPESB PNX0014/2009]
- REFLORA [CNPq 563546/2010-7/FAPESB PES0054/2011]
- CNPq Edital Universal [Process 473526/2011-5]
- FAPESB [Process PET0039/2012]
- Pq/CNPq
- PDJ/CNPq
- Direct For Biological Sciences
- Division Of Environmental Biology [1352217] Funding Source: National Science Foundation
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Deciphering the phylogenetic relationships within the species-rich Millettioid clade has persisted as one of the major challenges in the systematics and evolutionary history of papilionoid legumes (Leguminosae, Papilionoideae). Historically, the predominantly neotropical lianas of subtribe Diocleinae in the Millettioid legumes have been taxonomically tangled together with the largely heterogeneous tribe Phaseoleae. This work presents a comprehensive molecular phylogenetic analysis based on nuclear and chloroplast markers and includes all genera ever referred to Diocleae except for the monospecific Philippine Luzonia, resolving several key generic relationships within the Millettioid legumes. The first of two separate analyses includes 310 matK accessions and strongly supports the reestablishment of tribe Diocleae as a branch of the Millettioid clade. This work sheds greater light on the higher-level phylogeny of Diocleae and allows the recognition of three major lineages: the Canavalia, Dioclea, and Galactia clades. The second set of phylogenetic analyses utilized nuclear (ITS/5.8S and ETS) and plastid (matK and tmT-Y) DNA sequences to reveal (i) the monophyly of Canavalia and Cleobulia; (ii) the monophyly of Bionia with the exclusion of Bionia belle; (iii) the paraphyly of Dioclea with respect to Cleobulia, Cymbosema, and Macropsychanthus; (iv) the paraphyly of Cratylia with respect to the broadly polyphyletic Camptosema; and (v) the polyphyly of Galactia with species scattered widely across the tree. (C) 2015 Elsevier Inc. All rights reserved.
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