Tropane alkaloids and calystegines as chemotaxonomic markers in the Solanaceae

Anais da Academia Brasileira de Ciências

Aline G.s. Pigatto¹  Carolina C. Blanco¹  Lilian A. Mentz¹  Geraldo L.g. Soares¹ 

关键词: chemical diversity;    number of occurrence;    geographic distribution;    multivariate analysis;    Solanaceae;    Solanaceae;    diversidade química;    número de ocorrências;    análise multivariada;    distribuição geográfica;   

DOI  :  10.1590/0001-3765201520140231

来源: SciELO

【 摘 要 】

ABSTRACT This study assessed the occurrence and distribution of tropane alkaloids and calystegines in genera of the family Solanaceae to identify patterns of distribution and make evolutionary inferences. A database of tropane alkaloids and calystegines occurrences was constructed from the results of a search of scientific websites and a hand search of periodicals. The terms "Solanaceae", "tropane alkaloids", and "calystegines" were used as index terms for a full-text article search unrestricted by date of publications. The number of occurrence and chemical diversity indices were calculated and cluster analysis and principal components analysis were performed. Overall, 996 occurrences were reported, 879 of tropane alkaloids (88.3%) and 117 of calystegines (11.7%). The calystegines were significantly more relevant than tropane alkaloids for characterization of distinct groups of genera on both analyses performed here. This corroborates the trend toward a chemical dichotomy observed on database analysis and somewhat reinforces the correlation between geographic distribution and occurrence of secondary metabolites, as the presence of calystegines alone (without tropane alkaloids) was only reported in genera that have South America as their center of diversity.

【 授权许可】

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