絞り込み

16645

広告

Specific Detection of the Wheat Blast Pathogen (Magnaporthe oryzae Triticum) by Loop-Mediated Isothermal Amplification.

著者 Yasuhara-Bell J , Pedley KF , Farman M , Valent B , Stack JP
Plant Dis.2018 Oct 15 ; ():PDIS03180512RE.
この記事をPubMed上で見るPubMedで表示
この記事をGoogle翻訳上で見る Google翻訳で開く

スターを付ける スターを付ける     (5view , 0users)

Full Text Sources

Wheat blast, caused by the Magnaporthe oryzae Triticum pathotype, is an economically important fungal disease of wheat. Wheat blast symptoms are similar to Fusarium head scab and can cause confusion in the field. Currently, no in-field diagnostic exists for M. oryzae Triticum. Loop-mediated isothermal amplification (LAMP) primers were designed to target the PoT2 and MoT3 loci, previously shown to be specific for M. oryzae and M. oryzae Triticum, respectively. Specificity was determined using 158 M. oryzae strains collected from infected wheat and other grasses and representing geographic and temporal variation. Negative controls included 50 Fusarium spp. isolates. Sensitivity was assessed using 10-fold serial dilutions of M. oryzae Triticum gDNA. PoT2- and MoT3-based assays showed high specificity for M. oryzae and M. oryzae Triticum, respectively, and sensitivity to approximately 5 pg of DNA per reaction. PoT2 and MoT3 assays were tested on M. oryzae Triticum-infected wheat seed and spikes and identified M. oryzae and M. oryzae Triticum, respectively, using a field DNA extraction kit and the portable Genie II system. The mitochondrial NADH-dehydrogenase (nad5) gene, an internal control for plant DNA, was multiplexed with PoT2 and MoT3 and showed results comparable with individual assays. These results show applicability for M. oryzae Triticum field surveillance, as well as identifying nonwheat species that may serve as a reservoir or source of inoculum for nearby wheat fields.
PMID: 30320534 [PubMed - as supplied by publisher]
印刷用ページを開く Endnote用テキストダウンロード