Detection and measurement of Plasmodiophora brassicae

Faggian, Robert and Strelkov, Stephen E. 2009, Detection and measurement of Plasmodiophora brassicae, Journal of plant growth regulation, vol. 28, no. 3, pp. 282-288, doi: 10.1007/s00344-009-9092-9.

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Title Detection and measurement of Plasmodiophora brassicae
Author(s) Faggian, RobertORCID iD for Faggian, Robert
Strelkov, Stephen E.
Journal name Journal of plant growth regulation
Volume number 28
Issue number 3
Start page 282
End page 288
Total pages 7
Publisher Springer
Place of publication Berlin, Germany
Publication date 2009-09
ISSN 0721-7595
Keyword(s) Clubroot
Plasmodiophora brassicae
Plant disease
Summary Clubroot, caused by Plasmodiophora brassicae, is one of the most important diseases of brassicas. Management of clubroot is difficult, and the best means of avoiding the disease include planting in areas where P. brassicae is not present and using plants and growing media free from pathogen inoculum. As P. brassicae is not culturable, its detection has traditionally relied on plant bioassays, which are time-consuming and require large amounts of glasshouse space. More recently, fluorescence microscopy, serology, and DNA-based methods have all been used to test soil, water, or plant samples for clubroot. The use of fluorescence microscopy to detect and count pathogen spores in the soil requires significant operator skill and is unlikely to serve as the basis for a routine diagnostic test. By contrast, serologic assays are inexpensive and amenable to high-throughput screening but need to be based on monoclonal antibodies because polyclonal antisera cannot be reproduced and are therefore of limited quantity. Several polymerase chain reaction (PCR)-based assays have also been developed; these are highly specific for P. brassicae and have been well-correlated with disease severity. As such, PCR-based diagnostic tests have been adopted to varying extents in Canada and Australia, but wide implementation has been restricted by sample processing costs. Efforts are underway to develop inexpensive serologic on-farm diagnostic kits and to improve quantification of pathogen inoculum levels through real-time PCR. Proper detection and quantification of P. brassicae will likely play an increasingly important role in the development of effective clubroot management strategies.
Language eng
DOI 10.1007/s00344-009-9092-9
Field of Research 049999 Earth Sciences not elsewhere classified
Socio Economic Objective 970104 Expanding Knowledge in the Earth Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
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Document type: Journal Article
Collection: Office of the Deputy Vice-Chancellor Research
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