Diversification of Bromelioideae (Bromeliaceae) in the Brazilian Atlantic rainforest: A case study in Aechmea subgenus Ortgiesia

Autor(es)

Goetze, Marcia ^[1] ; Schulte, Katharina ^{[2, 3]} ; Palma-Silva, Clarisse ^[4] ; Zanella, Camila M. ^[1] ; Buttow, Miriam V. ^[1] ; Capra, Fernanda ^[1] ; Bered, Fernanda ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Rio Grande do Sul, Inst Biociencias, Dept Genet, Ave Bento Goncalves 9500, POB 15053, BR-91501970 Porto Alegre, RS - Brazil

^[2] James Cook Univ, Australian Trop Herbarium, POB 6811, Cairns, Qld 4878 - Australia

^[3] James Cook Univ, Ctr Trop Biodivers & Climate Change, Discovery Dr, Townsville, Qld 4814 - Australia

^[4] Univ Estadual Paulista, Inst Biociencias, Dept Ecol, Ave 24A 1515, BR-13506900 Rio Claro, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Molecular Phylogenetics and Evolution; v. 98, p. 346-357, MAY 2016.
• Citações Web of Science: 4

Resumo

Aechmea subgenus Ortgiesia comprises ca. 20 species distributed in Brazil, Argentina, Paraguay, and Uruguay, with a center of diversity in the Brazilian Atlantic rainforest. We examined interspecific relationships of Ortgiesia based on Amplified Fragment Length Polymorphisms (AFLP). Ninety-six accessions belonging to 14 species of Ortgiesia were sampled, and genotyped with 11 AFLP primer combinations. The neighbor joining (NJ) tree depicted two main genetic groups within Aechmea subgenus Ortgiesia, and four subgroups. The NJ tree showed short internal branches, indicating an overall shallow genetic divergence among Ortgiesia species as expected for the recently radiated subfamily Bromelioideae. Our results suggest that hybridization and/or incomplete lineage sorting may have hampered the reconstruction of interspecific relationships in Aechmea subgenus Ortgiesia. The mapping of petal color (yellow, blue, pink, or white), inflorescence type (simple or compound), and inflorescence shape (ellipsoid, subcylindric, cylindric, or pyramidal) against the NJ tree indicated that these characters are of limited taxonomic use in Aechmea subgenus Ortgiesia due to homoplasy. An analysis of the current distribution of Ortgiesia identified the southern region of the Brazilian Atlantic rainforest, between latitudes of 26 degrees and 27 degrees S, as the center of diversity for the subgenus. (C) 2016 Elsevier Inc. All rights reserved. (AU)

• Processo FAPESP: 09/52725-3 - Especiação, isolamento reprodutivo e genética de populações na família Bromeliaceae: implicações taxonômicas, evolutivas e conservacionistas
• Beneficiário: Clarisse Palma da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Jovens Pesquisadores