Related Experiment Video
Updated: Feb 27, 2026
On-Site Molecular Detection of Soil-Borne Phytopathogens Using a Portable Real-Time PCR System
Published on: February 23, 2018
Novel loop-mediated isothermal amplification (LAMP) assay with a universal QProbe can detect SNPs determining races
Yu Ayukawa1,2, Saeri Hanyuda2, Naoko Fujita2
1United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology (TUAT), Fuchu, Tokyo, 183-8509, Japan.
Abstract:
Tomato wilt pathogen Fusarium oxysporum f. sp. lycopersici (Fol) is grouped into three races based on their pathogenicity to different host cultivars. Rapid detection and discrimination of Fol races in field soils is important to prevent tomato wilt disease. Although five types of point mutations in secreted in xylem 3 (SIX3) gene, which are characteristic of race 3, have been reported as a molecular marker for the race, detection of these point mutations is laborious. The aim of this study is to develop a rapid and accurate method for the detection of point mutations in SIX3 of Fol. Loop-mediated isothermal amplification (LAMP) of SIX3 gene with the universal QProbe as well as two joint DNAs followed by annealing curve analysis allowed us to specifically detect Fol and discriminate race 3 among other races in about one hour. Our developed method is applicable for detection of races of other plant pathogenic fungi as well as their pesticide-resistant mutants that arise through point mutations in a particular gene.
