Resumen

SOTO HERNANDEZ, Marcos; RICO-ARCE, María de Lourdes  y  KITE, Geoffrey. Nonproteic aminoacids in some species of the subfamily Mimosoideae with emphasis in the genus Acacia sensu lato. Bot. sci [online]. 2016, vol.94, n.3, pp.585-592. ISSN 2007-4476.  https://doi.org/10.17129/botsci.443.

Non protein amino acids of some species of the legume genera in the tribes Acaciae, Ingeae, and Mimoseae were surveyed by Liquid chromatography-mass spectrometry using crude extracts of seeds and leaves. This has revealed compounds characteristic of subgenera Acacia and Aculeiferum and the genus Acaciella. Seeds and leaves of Acacia subgenus were characterized by the accumulation of t-4-hydroxy-pipecolic acid, pipecolic acid, albizzine, and three unknown compounds, whereas compounds characteristic of seeds and leaves of subgenus Aculeiferum included 2-amino-3acetyl-propionic acid, 2-amino-4-acetyl amino butyric acid, t-4-hydroxy pipecolic acid, pipecolic acid and albizzine. None of the studied species of the Acacia coulteri group presented willardine. Characteristic compounds in the genus Acaciella were 2-amino-3-acetyl propionic acid, pipecolic acid and albizzine. The study was completed comparing with some species of the tribe Ingeae in which 2-amino-3-acetyl propionic acid and 2-amino-4-acetyl amino butyric acid were the more common compounds. Some species of the tribe Mimoseae were included and compared and their main compounds were t-4-hydroxy-pipecolic acid and pipecolic acid. The results are discussed with studies of other types of characters and recent molecular phylogenies and a scheme for the biochemical origin of a marker amino acid is proposed, and a possible divergence of species is shown.

Palabras llave : Acacia; liquid chromatography-mass spectrometry non protein aminoacids.

        · resumen en Español     · texto en Español     · Español ( pdf )