PARTE UTILIZADA= Used part: Hojas, corteza. 

ACCION FARMACOLOGICA= Pharmacological action: Astringente, en las diarreas y como sedante del aparato genital.  

POSOLOGÍA= Posology: Yema : aplicación tópica de preparaciones semisiolidas equivalentes a un 20-30 de la droga. Hojas, corteza : para el tratamiento de afecciones reumatológicas : 130 mg de la combinación aprobada (hoja, corteza de álamo, vara de oro y corteza de sauce), 3-4 veces al día. Para el tratamiento de la hipertrofia de próstata : 60 mg, 2 a 4 veces al día de algunas de las combinaciuones aprobadas (hojas y corteza de álamo, frutos de sabal  y raíz de ortiga/ hojas y corteza de alamo , y raíz de ortiga/hoja de álamo, harina y globulinas de semillas de calabaza, vara de oro). Carbon vegetal : uno o dos conmprimidos o una o dos cucharaditas de café, una a tres veces al día.

COMPOSICIÓN QUÍMICA= Chemical composition: Trazas de aceite esencial, con cariofileno; flavonoides: crisol, tectocrisol, galangósido, quercetósido, ramnósido; salipopulósido (saliciltremuloína, salicina); taninos.

ZONA GEOGRAFICA= Geografical zone: Uruguay.

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

Black poplar (Populus nigra L.) is an economically and ecologically important tree species and an ideal organism for studies of genetic variation. In the present work, we use a candidate gene approach to infer the patterns of DNA variation in natural populations of this species. A total of 312 single nucleotide polymorphisms (SNPs) are found among 8,056 bp sequenced from nine drought-adaptation and photosynthesis-related gene loci. The median SNP frequency is one site per 26 bp. The average nucleotide diversity is calculated to be ΘW = 0.01074 and πT = 0.00702, higher values than those observed in P. tremula, P. trichocarpa and most conifer species. Tests of neutrality for each gene reveal a general excess of low-frequency mutations, a greater number of haplotypes than expected and an excess of high-frequency derived variants in P. nigra, which is consistent with previous findings that genetic hitchhiking has occurred in this species. Linkage disequilibrium is low, decaying rapidly from 0.45 to 0.20 or less within a distance of 300 bp, although the declines of r2 are variable among different loci. This is similar to the rate of decay reported in most other tree species. Our dataset is expected to enhance understanding of how evolutionary forces shape genetic variation, and it will contribute to molecular breeding in black poplar. © Springer Science+Business Media B.V. 2009.

1) GONZALEZ, Matías ; LOMBARDO, Atilio ; VALLARINO, Aida. Plantas de la medicina vulgar del Uruguay. Montevideo : Talleres Gráficos, 1937, p.13. 

2) CHU, Y., et al. Patterns of DNA sequence variation at candidate gene loci in black poplar (Populus nigra L.) as revealed by single nucleotide polymorphisms. Genetica. 2009, vol.137, nº2, p141-150.   

3) Fitoterapia : vademecum de prescripción. 4ª  ed. Barcelona : Masson, 2003,p.103