A polymerase chain reaction (PCR) assay for the detection of inoculum of Sclerotinia sclerotiorum

被引:58
作者
Freeman, J [1 ]
Ward, E [1 ]
Calderon, C [1 ]
McCartney, A [1 ]
机构
[1] Rothamsted Res, Plant Pathogen Interact Div, Harpenden AL5 2JQ, Herts, England
基金
英国生物技术与生命科学研究理事会;
关键词
airborne inoculum; ascospores; Botrytis cinerea; Brassica napus; spore trapping;
D O I
10.1023/A:1021216720024
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
The development of a polymerase chain reaction (PCR) assay for the detection of inoculum of the plant pathogenic fungus Sclerotinia sclerotiorum is described. The PCR primers were designed using nuclear ribosomal DNA internal transcribed spacer sequences. Specific detection of DNA from S. sclerotiorum was possible even in the presence of a 40-fold excess of DNA from the closely related fungus Botrytis cinerea. PCR products were obtained from suspensions of untreated S. sclerotiorum ascospores alone, but DNA purification was required for detection in the presence of large numbers of B. cinerea conidiospores. Specific detection of inoculum of S. sclerotiorum was possible in field-based air-samples, using a Burkard spore trap, and from inoculated oilseed rape petals. The assay has potential for incorporation into a risk management system for S. sclerotiorum in oilseed rape crops.
引用
收藏
页码:877 / 886
页数:10
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