Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/85255
Type: Artigo de periódico
Title: A Phylogenetic Analysis Of Lychnophorinae (asteraceae: Vernonieae) Based On Molecular And Morphological Data
Author: Loeuille B.
Semir J.
Lohmann L.G.
Pirani J.R.
Abstract: The subtribe Lychnophorinae (Asteraceae: Vernonieae) comprises approximately 100 species and 18 genera distributed mostly in the Cerrado Domain of the Brazilian Central Plateau. Phylogenetic analyses of Lychnophorinae based on four molecular regions (ETS, ITS, ndhF, rpl32-TrnL) and a morphological dataset were performed, aiming to delimit monophyletic genera, to confirm or refute the generic assignment of several species, to achieve a better understanding of the relationships between the genera, and to identify morphological characters and synapomorphies for major clades within the subtribe. Our analyses recovered several clades that represent currently recognized genera or genera that have been recognized in the past. All clades recovered are characterized by a combination of morphological characters. However, Lychnophora (35 species), the richest genus of the subtribe, emerged as polyphyletic. Albertinia, Blanchetia and Gorceixia were the first lineages to diversify, whereas Eremanthus plus Lychnophora sensu stricto emerged as the most derived clade. Relationships among other clades remained partially unresolved. Some incongruence in the placement of species of Eremanthus, Paralychnophora, and Piptolepis in the nuclear and chloroplast phytogenies provided additional evidence for the occurrence of two putative intergeneric hybrids in the wild. Biogeographic reconstruction suggests that the diversification and expansion range of most Lychnophorinae clades in the campos rupestres, from an ancestor in tropical seasonl forests, occurred previously to the conquest of the cerrado S. S. areas performed by only a few clades.
Editor: American Society of Plant Taxonomists Inc.
Rights: fechado
Identifier DOI: 10.1600/036364415X686585
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-84923348422&partnerID=40&md5=4f6ff9be98feb1d58fe7962c10fa8057
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File Description SizeFormat 
2-s2.0-84923348422.pdf1.42 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.