منابع مشابه
Relation of Polyphenol Oxidases to Fungitoxicity.
Stemphylium sarcinaeforme (Cav.) Wilt. (formerly Macrosporium sarcinaeforme Cav.) and Monilinia fructicola (Wint.) Honey (formerly Sclerotinia fructicola (Wint.) Rehm.) are two fungi which have been widely used as test organisms for screening fungicides in the laboratory. S. sarcinaeforme is resistant to the toxicity of phenolic and quinonoid compounds (herein referred to as phenols and quinone...
متن کاملFungitoxicity against Botrytis cinerea of a Flavonoid Isolated from Pseudognaphalium robustum
The fungotoxicity against Botrytis cinerea of a flavonoid isolated from Pseudognaphalium robustum was analyzed. Two absorption column chromatographies and one semipreparative thin layer chromatography were used to purify the active flavonoid. It was determined, by H-NMR spectroscopy and co-elution with standards in HPLC, that this compound was 5,7-dihydroxy-3,8-dimethoxyflavone (gnaphaliin A). ...
متن کاملNovel fungitoxicity assays for inhibition of germination-associated adhesion of Botrytis cinerea and Puccinia recondita spores.
Botrytis cinerea and Puccinia recondita spores adhere strongly to polystyrene microtiter plates coincident with germination. We developed assays for inhibition of spore adhesion in 96-well microtiter plates by using sulforhodamine B staining to quantify the adherent spores. In both organisms, fungicides that inhibited germination strongly inhibited spore adhesion, with 50% effective concentrati...
متن کاملComparative and quantitative studies of fungitoxicity against fungal spores and mycelia.
In studies on the mode of action of antifuingal agents, it may be valuable to reveal the difference in drug sensitivity between fungal spores and mycelia. Various methods employed in the evaluation of antifungal substances do not necessarily apply to the solution of this problem. For the estimation of "sporostatic" activity of an agent, the inhibitory effect on the course of germination of spor...
متن کاملScreening of Essential Oils of Angiospermic Plants for Their Fungitoxicity against Aspergillus Flavus and Aspergillus Niger
Essential oils obtained from plants have recently gained a great scientific interest as a potent source of antimicrobials of natural origin. The present study highlights the antifungal activity of essential oils against Aspergillus flavus and Aspergillus niger. During screening of essential oils of six selected Angiospermic plants at 2000 ppm (mg/l) against the test fungus, Mentha arvensis and ...
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ژورنال
عنوان ژورنال: Nature
سال: 1972
ISSN: 0028-0836,1476-4687
DOI: 10.1038/237118a0