PARTE UTILIZADA= Used part: Corteza.

ACCIÓN FARMACOLÓGICA= Pharmacological action: Astringente, antidiarreico.

COMPOSICIÓN QUÍMICA= Chemical composition: Taninos, en la corteza en un porcentaje cercano al 10-20% (en forma de ácido quercitánico la mayor parte). En cambio en las agallas son mucho más abundantes, llegando a casi un 60-70%. Otros: Ácidos gálico (2-4%) y elágico (presentes en la corteza y agallas), quercitrina (principio amargo presente en corteza y hojas). Quercetol, pectina, floroglucina, tetra, penta y oligo-galoil-glucosa (presentes en las agallas), proantocianidoles, catecoles, etc.

ZONA GEOGRÁFICA= Geografical zone: Uruguay.

DIVERSIDAD GENÉTICA Y MEJORAMIENTO DE PLANTAS MEDICINALES= Medicinal plants and improvement of medicinal herbs:

The nuclear genetic variation within and between four sessile (Q. petraea) and six pedunculate (Q. robur) autochthonous Flemish oak populations was investigated with AFLP markers.  One sessile and one pedunculate oak population were addnl. screened for detailed leaf characteristics using an image anal. system.  Principal coordinate anal. on the AFLP data classified the oaks in two main groups, according to their taxonomic status.  No species-specific AFLP markers were found using four primer combinations, but marker frequency differences up to 71 % were recorded between both species.  Anal. of the genetic structure showed that the divergence between species, as obsd. by ordination, was significant.  Both species revealed similar diversity levels.  A smaller though significant differentiation was also revealed for both species among populations within species.  Mol. and morphol. based approaches showed a high degree of consistency.  Screening of 60 AFLP primer combinations using a bulking strategy did not allow identifying species-specific markers, which supports the conclusions reached in previous studies.  The distribution of genetic variability at the species and at the population level is discussed.  

1) GONZALEZ, Matías ; LOMBARDO, Atilio ; VALLARINO, Aida.-- Plantas de la medicina vulgar del Uruguay.-- Montevideo : Talleres Gráficos, 1937, pp. 109-110.

2) ALONSO, Jorge R. Tratado de fitomedicina : bases clínicas y farmacológicas. Buenos Aires : ISIS, 1998, p. 844.

3) COART, E.; Lamote, V., et al. AFLP markers demonstrate local genetic differentiation between two indigenous  oak  species [ Quercus   robur  L. and  Quercus  petraea (Matt.) Liebl.] in Flemish populations. Theoretical and Applied Genetics. 2002, vol.105, nº2-3, p.431-439.