期刊
SCIENTIFIC REPORTS
卷 4, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/srep07094
关键词
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资金
- Special Fund for Agro-scientific Research in the Public Interest [201303023]
- Major State Basic Research Development Program of China (973 Program) [2012CB114000]
- National High-Tech Research and Development Program of China (863 Program) [2012AA101502]
- Science and Technology Support Project of Jiangsu Province, China [BE2013432]
- National Natural Science Foundation of China [31401764]
Resistance of Fusarium graminearum to carbendazim is caused by point mutations in the beta(2)-tubulin gene. The point mutation at codon 167 (TTT -> TAT, F167Y) occurs in more than 90% of field resistant isolates in China. To establish a suitable method for rapid detection of the F167Y mutation in F. graminearum, an efficient and simple method with high specificity was developed based on loop-mediated isothermal amplification (LAMP). A set of four primers was designed and optimized to specially distinguish the F167Y mutation genotype. The LAMP reaction was optimal at 63 degrees C for 60 min. When hydroxynaphthol blue dye (HNB) was added prior to amplification, samples with DNA of the F167Y mutation developed a characteristic sky blue color after the reaction but those without DNA or with different DNA did not. Results of HNB staining method were reconfirmed by gel electrophoresis. The developed LAMP had good specificity, stability and repeatability and was suitable for monitoring carbendazim-resistance populations of F. graminearum in agricultural production.
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