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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Laticifer distribution in fig inflorescence and its potential role in the fig-fig wasp mutualism

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Autor(es):
Marinho, Cristina Ribeiro [1] ; Santinelo Pereira, Rodrigo Augusto [2] ; Peng, Yan-Qiong [3] ; Teixeira, Simone Padua [1]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Fac Ciencias Farmaceut Ribeirao Preto, Av Cafe S-N, BR-14040903 Ribeirao Preto, SP - Brazil
[2] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Biol, Av Bandeirantes 3900, BR-14040901 Ribeirao Preto, SP - Brazil
[3] Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan - Peoples R China
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY; v. 90, n. SI, p. 160-167, JUL 2018.
Citações Web of Science: 5
Resumo

Although in Moraceae the presence of laticifers is considered to be a synapomorphy, little is known about the distribution and morphology of this type of secretory structure in the reproductive organs of its species. Ficus, the largest genus of Moraceae, is characterized by an inflorescence known as syconium and by an obligate mutualistic interaction with pollinating wasps. The objectives of the present study were to evaluate the distribution and morphology of laticifers in syconia of 36 species belonging to different Ficus sections and to survey traits of taxonomic and adaptive value for the group. Syconia containing flowers in a receptive state were collected, fixed and processed for anatomical analysis. All species studied have branched laticifers distributed in the syconium receptacle, in the ostiolar bracts and in the pedicel of staminate flowers. Almost all species show laticifers in the pedicel of shorter-styled flowers. Laticifers also occur in the pedicel of longer-styled flowers in most Ficus sections, except F. curtipes (Conosycea section) and more than 75% of the studied species of the Americanae section. Laticifers are observed in the sepals of 25 of the 36 species studied and occasionally in the pistil. The presence of laticifers in the pedicel of shorter-style flowers and its absence in the pistil suggest that the distribution of this secretory structure in the fig flower was selected by pressures imposed by the fig-fig wasp mutualism. The laticifers in the pedicel of shorter-styled flowers may confer protection to the developing wasp larvae against natural enemies. However, the absence of laticifers in the pistil of most Ficus species studied was probably selected by the mutualistic relationship with the agaonid pollinating wasps since the latex could interfere with oviposition through the style, with the larval development of the pollinating fig wasps, and the emergence of pollinator offspring from their galls. (AU)

Processo FAPESP: 14/07453-3 - Desenvolvimento floral de espécies do clado urticoide
Beneficiário:Simone de Pádua Teixeira
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 13/21794-5 - Morfologia e evolução de laticíferos em Moraceae
Beneficiário:Cristina Ribeiro Marinho
Linha de fomento: Bolsas no Brasil - Pós-Doutorado