The use of vegetal extracts requires toxicological and genotoxic evaluations to establish and verify safety before being added to human cosmetic, pharmaceutical medicine, or alimentary products. Persea americana seeds have been used in traditional medicine as treatment for several diseases. In this work, the ethanolic seed extract of Persea americana was evaluated with respect to its genotoxic ...

After feeding of 24-ep/-castasterone to the cockroach Periplaneta americana an organspecific epimerization of the brassinosteroid to 2,24-d/ep/-castasterone could be detected in female insects. The metabolite being observed only in the ovaries and not in the testes of the insect was identified by GC/MS in comparison with a synthesized authentic sample. Con­ trary, 24-ep/-brassinolide is not met...

1. The application of metabolic inhibitors to nerve-muscle synapses on 'white' and 'red' fibres in the retractor unguis muscles of P. americana and B. giganteus resulted in a dramatic increase in the spontaneous miniature potential discharge and was accompanied by a summation of the miniature potentials to form 'composite' potentials. 2. Axon terminals associated with 'white' muscle fibres resp...

Dactylonectria macrodidyma is part of the Nectriaceae, a family containing important plant pathogens. This species possesses the ability to induce disease on grapevine, avocado, and olive. Here, we report the first draft genome of D. macrodidyma isolate JAC15-245. The assembled genome was 58 Mbp and contained an estimated 16,454 genes.

Lesions in four captive pronghorn antelope (Antilocapra americana) naturally infected with Parelaphostrongylus tenuis in eastern Nebraska (USA) are described in this report. Animals were bright and alert with hind limb ataxia that progressed to sternal or lateral recumbency between July 28 and October 17, 1998. Animals were euthanized due to disease progression despite therapy. Multifocal decub...

El objetivo del estudio fue analizar la relación entre altura ydiámetro árbol de Erythrina americana con el rendimiento follaje a unaedad rebrote 90 días. Se emplearon 47 árboles 1.6 m ± 0.2 , diámetros 0.20 y 1.3 suelo, 0.085 0.021 0.065± 0.018 m, respectivamente. La asociación delárbol materia seca (RMS) árbol-1, se determinó concorrelación. variación en RMS árbol?1 través regresiónmúltiple. ...