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Profiling of Phenolic Compounds of Somatic and Reproductive Tissues of Agave Durangensis Gentry (Agavaceae)

2009; Science Publications; Volume: 6; Issue: 6 Linguagem: Inglês

10.3844/ajassp.2009.1076.1085

1554-3641

Norma Almaraz-Ab, Elí Amanda Delgado-Alvarado, Vicente Espinosa-Hernández, Margarita Ortega-Cha, Gildardo Orea-Lara, Armando Cifuentes-Di de Leon, Jose Antonio Avila-Reye, Raul Muniz-Mart,

Phytochemistry and Biological Activities

Problem statement: In Durango, Mexico, mescal is elaborated from wild plants of Agave durangensis . This species shows a high morphological variabili ty within and among populations, what makes its taxonomic delimitation a hard task. Approach: In this study the pollen and foliar phenolic compositions of Agave durangensis were analyzed by HPLC/DAD with the aim of determining the significance of phenol profiles to delimit this tax on. Results: The foliar phenol compositions were evaluated within and among two populations and between juvenile and adult plants. Agave asperrima Jacobi, Dasylirion sp. and juvenile samples of A. shrevei Gentry subsp. shrevei , A. shrevei Gentry subsp. matapensis Gentry and A. wocomahi Gentry, were also analyzed to stand comparisons wi th. The results from this study indicated that pollen and f oliar tissues of Agave durangneisis were rich in kaempferol glycoside derivatives (13 and 23 differe nt compounds can be present, respectively). Principal coordinates analysis (PCO), based on foli ar profiles of adults, indicated the presence of several chemotypes within the Type locality of Agave durangensis and revealed chemical differences between the both analyzed populations. Conclusion/Recommendations: Chemical and morphological differences and biogeographical evidence suggest th e recognition of two different taxonomic entities i n this morphological variable group.