<i>Ustilaginoidea virens</i> Infection of Rice in Arkansas: Toxicity of False Smut Galls, Their Extracts and the Ustiloxin Fraction
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the stady and analysis of rice agroclimatology in lenjan
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15 صفحه اولUstiloxin G, a New Cyclopeptide Mycotoxin from Rice False Smut Balls
Ustiloxins were cyclopeptide mycotoxins from rice false smut balls (FSBs) that formed in rice spikelets infected by the fungal pathogen Ustilaginoidea virens. To investigate the chemical diversity of these metabolites and their bioactivities, one new cyclopeptide, ustiloxin G (1), together with four known congeners-ustiloxins A (2), B (3), D (4), and F (5)-were isolated from water extract of ri...
متن کاملMain Ustilaginoidins and Their Distribution in Rice False Smut Balls
Rice false smut has become an increasingly serious fungal disease in rice (Oryza sativa L.) production worldwide. Ustilaginoidins are bis-naphtho-γ-pyrone mycotoxins previously isolated from the rice false smut balls (FSBs) infected by the pathogen Villosiclava virens in rice spikelets on panicles. To investigate the main ustilaginoidins and their distribution in rice FSBs, five main bis-naphth...
متن کاملPEST MANAGEMENT: DISEASES Infection of Plants of Selected Rice Cultivars by the False Smut Fungus, Ustilaginoidea virens, in Arkansas
False smut, caused by Ustilaginoidea virens, has recently been found in Arkansas. Plants infected by the fungus remain symptom-free until heading and it is difficult to see spores on contaminated seeds. Field tests were conducted in 2006 to determine the effect of false-smut inoculation of rice seeds on the yields of selected rice cultivars. Seeds were inoculated by vacuum infiltration in suspe...
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ژورنال
عنوان ژورنال: American Journal of Plant Sciences
سال: 2014
ISSN: 2158-2742,2158-2750
DOI: 10.4236/ajps.2014.521333