Elucidation of the canker and scab symptoms on pumpkin causes by Fusarium species

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dc.contributor.authorNagao, Hideyuki
dc.date.accessioned2017-07-03T07:42:10Z
dc.date.available2017-07-03T07:42:10Z
dc.date.issued2013
dc.description.abstractScabs or cankers on the surface of pumpkins are not recognized as "diseased" by ordinary consumers because these scabs or cankers are generally not softened and are seemed to be recovered after injuring. By the inoculation test, mechanical injury was the sole causal agent to induce scab and canker of pumpkin. Isolates from scabs were identified as Fusarium spp. Most of them were non-pathogenic to the known host plants. Several VCGs of F. solani were assigned and these result suggested that the isolated F. solani were belonged to independent VC groups. Molecular identification of Fusarium spp. also supported the results of morphological identification and the majority of F. solani were high homology with non-plant pathogenic strains. By the field survey, there were 2 causal agents, namely, 1. fortuitous agent by the pumpkin stem and 2. inevitable agent by stinkbugs. Mycotoxine production was examined for these fusarium isolates. Beauvericin was detected by HPLC from 2 strains of F. oxysporum and 2 strains of F.dimerum. However, it was not detected in 10 strains of F.solani and 1 strain of F.semitectum. Our result will contribute the improvement of agro-product quality from the contamination risk of mycotoxin-producing fungi.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/4078
dc.subjectBeauvericinen_US
dc.subjectFusariumen_US
dc.subjectHPLCen_US
dc.subjectmechanical injuryen_US
dc.subjectmycotoxineen_US
dc.subjectpumpkin fiuiten_US
dc.subjectscaben_US
dc.titleElucidation of the canker and scab symptoms on pumpkin causes by Fusarium speciesen_US
dc.typeTechnical Reporten_US
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