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Type: Artigo de periódico
Title: The chemistry of flower rewards - Oncidium (Orchidaceae)
Author: Reis, MG
de Faria, AD
Bittrich, V
Amaral, MDE
Marsaioli, AJ
Abstract: Most of the flower-pollinator interactions are based on rewards as pollen and nectar. Our group however, has been focusing on the chemical composition of unusual rewards like floral resins and floral oils. We are now reporting the chemistry of the floraloils of Oncidium pubes which are composed of diacylglycerols and triacylglycerols possessing one or two acetyl residues and one long chain fatty acid. The substitution pattern of some of the diacylglycerols was inferred to be 1, 3 based on spectroscopic analyses and comparison with 3 different synthetic compounds obtained from D-mannitol, oleic acid and acetic acid. The fatty acid residues possess double bond and/or acetoxy group as functional groups. Finally our results provided chemical evidences that pollination of Oncidium pubes is not based upon an attraction-deception system but on floral lipids and this is the first time this has ever been mentioned in the literature.
Subject: Orchidaceae
Oncidium pubes
floral lipids
(beta-acetoxy-octadecanoyl)-acetyl-glycerol and (beta-acetoxy-eicosenoyl)-acetyl-glycerol
Country: Brasil
Editor: Soc Brasileira Quimica
Rights: aberto
Identifier DOI: 10.1590/S0103-50532000000600008
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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