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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Evolution of species diversity in the genus Chamaecostus (Costaceae): molecular phylogenetics and morphometric approaches

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Author(s):
Andre, Thiago [1, 2] ; Specht, Chelsea [3] ; Salzman, Shayla [4] ; Palma-Silva, Clarisse [5] ; Wendt, Tania [1]
Total Authors: 5
Affiliation:
[1] Univ Fed Rio de Janeiro, Rio De Janeiro, RJ - Brazil
[2] Univ Fed Oeste Para, HSTM, Santarem, PA - Brazil
[3] Univ Calif Berkeley, Berkeley, CA 94720 - USA
[4] Harvard Univ, Cambridge, MA 02138 - USA
[5] Univ Estadual Paulista, Rio Claro, SP - Brazil
Total Affiliations: 5
Document type: Journal article
Source: PHYTOTAXA; v. 204, n. 4, p. 265-276, APR 8 2015.
Web of Science Citations: 3
Abstract

While most species within the genus Chamaecostus (Costaceae) are well defined, the broad geographic range and long list of synonyms associated with Chamaecostus subsessilis led us to believe there may be some cryptic species within the complex. We thus investigate the phylogenetic relationships of species in the Chamaecostus lineage and specifically test the monophyly and diversity of the Chamaecostus subsessilis species complex from a population perspective by analyzing molecular sequence data and leaf morphometrics. We interpret evolutionary trends across the entire genus based on a molecular character-based phylogenetic hypothesis that includes all currently described species of Chamaecostus. Our results show that while Chamaecostus is strongly monophyletic, C. cuspidatus is found to be sister to a clade of some but not all samples of C. subsessilis, making it necessary to acknowledge more than one species in the C. subsessilis complex. Herbarium specimens of the C. subsessilis complex could be assigned based on geographic proximity to one of the major three clades recovered in the phylogenetic analysis. Leaf morphometric measurements were performed on each of these lineages and traits were tested to detect differences among phylogenetic lineages. We conclude by proposing the recognition of a new combination, Chamaecostus acaulis, which we describe. (AU)

FAPESP's process: 09/52725-3 - Speciation, reproductive isolation, and population genetics in species of Bromeliaceae family: implications for taxonomy, evolution and conservation
Grantee:Clarisse Palma da Silva
Support Opportunities: BIOTA-FAPESP Program - Young Investigators Grants