Osmophore structure and phylogeny of Cirrhaea (Orchidaceae, Stanhopeinae)

Autor(es)

Pansarin, Ludmila M. ^[1] ; Pansarin, Emerson R. ^[2] ; Sazima, Marlies ^[3]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Biociencias, Dept Ecol, BR-05508900 Sao Paulo, SP - Brazil

^[2] Univ Sao Paulo, Dept Biol, Fac Filosofia Ciencias & Letras, BR-14040901 Ribeirao Preto, SP - Brazil

^[3] Univ Estadual Campinas, Inst Biol, Dept Biol Vegetal, BR-13083970 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Botanical Journal of the Linnean Society; v. 176, n. 3, p. 369-383, NOV 2014.
• Citações Web of Science: 5

Resumo

Phylogenetic relationships and osmophore evolution of six Cirrhaea spp. were studied. Floral morphology was analysed using fresh flowers, and osmophore anatomy was determined on the basis of fixed flowers. Phylogenetic relationships of Cirrhaea were inferred on the basis of internal transcribed spacer (ITS), matK and trnL-F regions using maximum parsimony and Bayesian analyses. Floral morphology and osmophore structure vary among species. All Cirrhaea osmophores have a secretory epidermis without papillae. Cirrhaea is monophyletic and includes three subclades: (1) C.dependens/C.nasuta, with a secretory cylindrical protuberance at the base of the labellar midlobe; (2) C.fuscolutea/C.longiracemosa, with a secretory tissue at the base of the shell-shaped midlobe; and (3) C.loddigesii/C.seidelii with secretory tissue on the inner surface of the lateral lobes. The features of the flowers and osmophores in Cirrhaea spp. extend our knowledge of the diversity of secretory structures in Stanhopeinae, and demonstrate that floral morphology reflects phylogenetic relationships in Cirrhaea.(c) 2014 The Linnean Society of London, Botanical Journal of the Linnean Society, 2014, 176, 369-383. (AU)

• Processo FAPESP: 07/55591-2 - Biologia floral e reprodutiva do gênero Cirrhaea Lindl. (Orchidaceae) e evolução dos sistemas de polinização em stanhopeinae
• Beneficiário: Marlies Sazima
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 03/12595-7 - Composição florística, estrutura e funcionamento da Floresta Ombrófila Densa dos Núcleos Picinguaba e Santa Virgínia do Parque Estadual da Serra do Mar, estado de São Paulo, Brasil
• Beneficiário: Carlos Alfredo Joly
• Linha de fomento: Auxílio à Pesquisa - Programa BIOTA - Temático