Data/hora: 10/06/2024 06:31:57

Provedor de dados: | 39
País: | Brazil
Título: | Cuticular n-alkane in leaves of seven Neotropical species of the family Lecythidaceae: a contribution to chemotaxonomy
Autores: | Silva,Rejane Maria da; Ribeiro,Rayane de Tasso Moreira; Souza,Renata Janaína Carvalho de; Oliveira,Antônio Fernando Morais de; Silva,Suzene Izídio da; Gallão,Maria Izabel.
Data: | 2017-03-01
Ano: | 2017
Palavras-chave: | Lecythidaceae; Neotropics; Taxonomy; Tropical rain forest; Wax.
Resumo: | ABSTRACT Biosynthesized from very long-chain fatty acid wax precursors, n-alkanes make a valuable contribution to the taxonomy of plants. The alkane components of foliar epicuticles of seven Neotropical species of Lecythidaceae were investigated: Bertholletia excelsa, Cariniana legalis, Couroupita guianensis, Eschweilera alvimii, Eschweilera ovata, Gustavia augusta and Lecythis pisonis. Specimens were collected in the metropolitan area of Recife, Pernambuco, and their n-alkane fractions were analyzed by gas chromatography. The chemical relationships among the species were then evaluated using cophenetic correlation and UPGMA. Among the seven species, a total of 15 n-alkanes, with 21-35 carbon atoms, were identified and formed a consistent group of B. excelsa, C. guianensis, E. ovata, G. augusta, and L. pisonis with n-C31. The greatest similarities were found between B. excelsa and L. pisonis, and between C. guianensis and G. augusta. Nevertheless, a phenetic analysis based on a larger number of species is needed to better understand the chemotaxonomic value of epicuticular n-alkanes within the Lecythidaceae.
Tipo: | Info:eu-repo/semantics/other
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100137
Editor: | Sociedade Botânica do Brasil
Relação: | 10.1590/0102-33062016abb0387
Formato: | text/html
Fonte: | Acta Botanica Brasilica  v.31 n.1 2017
Fonte: | info:eu-repo/semantics/openAccess