Floral glands in asclepiads: structure, diversity and evolution

Autor(es)

Diego Demarco ^[1]

Afiliação do(s) autor(es)

^[1] Universidade de São Paulo. Instituto de Biociências. Departamento de Botânica - Brasil

• Tipo de documento: Artigo Científico
• Fonte: Acta Botanica Brasilica; v. 31, n. 3, p. 477-502, 2017-09-00.

Resumo

ABSTRACT Species of Apocynaceae stand out among angiosperms in having very complex flowers, especially those of asclepiads, which belong to the most derived subfamily (Asclepiadoideae). These flowers are known to represent the highest degree of floral synorganization of the eudicots, and are comparable only to orchids. This morphological complexity may also be understood by observing their glands. Asclepiads have several protective and nuptial secretory structures. Their highly specific and specialized pollination systems are associated with the great diversity of glands found in their flowers. This review gathers data regarding all types of floral glands described for asclepiads and adds three new types (glandular trichome, secretory idioblast and obturator), for a total of 13 types of glands. Some of the species reported here may have dozens of glands of up to 11 types on a single flower, corresponding to the largest diversity of glands recorded to date for a single structure. (AU)

• Processo FAPESP: 04/09729-4 - Glândulas de órgãos vegetativos aéreos e florais de espécies de Asclepiadoideae R. Br. ex Burnett (Apocynaceae s.l.) de Mata de Restinga do estado de São Paulo
• Beneficiário: Diego Demarco
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• 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
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático
• Processo FAPESP: 02/11881-3 - Estruturas secretoras florais e coleteres foliares de Aspidosperma Mart & Zucc. e Blepharodon Decne. (Apocynaceae s.l.) de Cerrado
• Beneficiário: Diego Demarco
• Modalidade de apoio: Bolsas no Brasil - Mestrado