Journal article
A brainstorm on the systematics of Turnera (Turneraceae, Malpighiales) caused by insights from molecular phylogenetics and morphological evolution.
- Rocha L Universidade Estadual de Feira de Santana, Departamento de Ciências Biológicas, Programa de Pós-graduação em Botânica, Av. Transnordestina s.n., Feira de Santana, 44036-900 Bahia, Brazil. Electronic address: lamarck_rocha@hotmail.com.
- Ribeiro PL Universidade Estadual de Feira de Santana, Departamento de Ciências Biológicas, Programa de Pós-graduação em Botânica, Av. Transnordestina s.n., Feira de Santana, 44036-900 Bahia, Brazil; Universidade Federal do Recôncavo da Bahia, Centro de Ciências Agrárias, Ambientais e Biológicas, Cruz das Almas, 44380-000 Bahia, Brazil. Electronic address: patyluzribeiro@yahoo.com.br.
- Endress PK University of Zurich, Department of Systematic and Evolutionary Botany, Zollikerstrasse 107, 8008 Zürich, Switzerland. Electronic address: pendress@systbot.uzh.ch.
- Rapini A Universidade Estadual de Feira de Santana, Departamento de Ciências Biológicas, Programa de Pós-graduação em Botânica, Av. Transnordestina s.n., Feira de Santana, 44036-900 Bahia, Brazil. Electronic address: rapinibot@yahoo.com.br.
- 2019-04-19
Published in:
- Molecular phylogenetics and evolution. - 2019
Character evolution
Diversification
Malpighiales
Neotropics
Oxossia
Bayes Theorem
Biodiversity
Classification
Consensus Sequence
Inflorescence
Phylogeny
Trichomes
Turnera
English
With 145 species, Turnera is the largest genus of Turneraceae (Malpighiales). Despite several morphotaxonomic and cytogenetic studies, our knowledge about the phylogenetic relationships in Turnera remains mainly based on morphological data. Here, we reconstruct the most comprehensive phylogeny of Turnera with molecular data to understand the morphological evolution within this group and to assess its circumscription and infrageneric classification. We analyzed two nuclear and six plastid markers and 112 taxa, including species and infraspecific taxa, 97 from Turnera, covering the 11 series of the genus. Bayesian inference, maximum parsimony and maximum likelihood analyses show that Turnera, as traditionally circumscribed, is not monophyletic. The genus is divided into two well-supported independent clades; one of them is sister to the genus Piriqueta and is here segregated as the new genus Oxossia. According to our reconstructions, Turnera probably evolved from an ancestor without extrafloral nectaries and with solitary, homostylous flowers with yellow petals. The emergences of extrafloral nectaries and distyly, both common in extant taxa, played an important role in the diversification of the genus. An updated infrageneric classification reflecting the relationships within Turnera is now possible based on morphological synapomorphies and is here designed for further studies.
- Language
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- English
- Open access status
- closed
- Identifiers
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- DOI 10.1016/j.ympev.2019.04.015
- PMID 30999036
- Persistent URL
- https://folia.unifr.ch/global/documents/128491
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