Apples were exposed to various concentrations of roseotoxins - metabolites of Trichothecium roseum and kinetic fluorescence imaging was used to detect the area influenced by the phytotoxin. Contrast was quantified within these images between the areas exposed to roseotoxins and the untreated areas. It was proved that roseotoxin B is able to penetrate apple peel and produce chlorotic lesions. Activity of roseotoxin B is similar as the activity of destruxins, host specific phytotoxins of Alternaria brassicae parasitic on canola.

• MeSH
• Depsipeptides metabolism   toxicity   MeSH
• Fluorometry MeSH
• Malus * MeSH
• Mitosporic Fungi metabolism   MeSH
• Plant Diseases microbiology   MeSH
• Publication type
• Journal Article MeSH
• Research Support, Non-U.S. Gov't MeSH
• Names of Substances
• Depsipeptides MeSH
• roseotoxin B MeSH Browser

A total of 307 new compounds, natural, semisynthetic or synthetic, were isolated at the Institute of microbiology during the last twelve years. Due to the development of separation (chromatographic) methods and of analytical methods used to determine the chemical structure of these compounds, i.e. NMR, MS and X-ray diffraction, many new metabolites could be described.

• MeSH
• Biological Factors chemistry   isolation & purification   MeSH
• Peptides, Cyclic chemistry   isolation & purification   MeSH
• Enzymes chemistry   isolation & purification   MeSH
• Molecular Sequence Data MeSH
• Ergot Alkaloids chemistry   isolation & purification   MeSH
• Carbohydrate Sequence MeSH
• Carbohydrates chemistry   isolation & purification   MeSH
• Amino Acid Sequence MeSH
• Publication type
• Journal Article MeSH
• Research Support, Non-U.S. Gov't MeSH
• Review MeSH
• Names of Substances
• Biological Factors MeSH
• Peptides, Cyclic MeSH
• Enzymes MeSH
• Ergot Alkaloids MeSH
• Carbohydrates MeSH