The exportation of cultured olive flounder (Paralichthys olivaceus) in Korea has been recently decreasing due to the infections with a myxozoan parasite Kudoa septempunctata, and there is a strong demand for strict food safety management because the food poisoning associated with consumption of raw olive flounder harbouring K. septempunctata has been frequently reported in Japan. The life cycle...

Both biotic and abiotic environmental filters drive the occurrence, distribution, persistence of plant species. Amongst drivers that influence distribution plants in harsh environments, seed predation temperature are particularly important habitats prone to fire. In this study, we highlight combined effects high simulating fire understand its on germination percentage speed species Copaifera ob...

Neste estudo investigou-se o papel de uma doença fúngica (Puccinia mikaniae H. S. Jacks. & Holw) na produção e acumulação cumarina em Mikania glomerata Spreng. (Asteraceae). Conhecida como “guaco”, esta planta é nativa do Brasil suas folhas são utilizadas no tratamento desordens respiratórias, sendo a seu marcador químico. Avaliou-se teor deste amostras obtidas diferentes M. saudáveis ou es...

The 'guaco' lianous herb Mikania laevigata, which is widespread in Southern Brazil, is traditionally used to treat bronchitis, asthma and cough. This work investigates the influence of the extraction method, solvent:drug ratio, ethanol proportion, harvest season (summer or winter) and solvent heating on the physicochemical profile of the extracts (dry weight, density, pH) and the coumarin (1,2-...

A phytochemical study of the methanol-soluble fraction of an aqueous extract of a sample of Psittacanthus calyculatus collected from the host plant Prosopsis laevigata (Smooth Mesquite) using several techniques, including co-chromatography coupled with UV detection, chromatographic purifications and IR, NMR and MS studies, resulted in the identification of gallic acid, two flavonol-3-biosides a...

The syntheses of three diacetylenic isobutylamides of Echinacea angustifolia have been achieved by direct synthetic routes by way of a common intermediate. The key step is the alkylation of the anion of the silylated diacetylene. We report the presence of all three diacetylenic isobutylamides in six of the nine Echinacea species: E. angustifolia, E. sanguinea, E. simulata, E. tennesseensis, E. ...