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- W1976543228 abstract "Tan spot, caused by Pyrenophora tritici-repentis , is an important foliar disease of wheat. In the present study, a gene named glucanase gene ( GLU1 ) encoding a putative exo-1,3-β-glucanase was cloned from a race five isolate of P. tritici-repentis . Transcription profile analysis of the GLU1 gene showed a carbon source control of the accumulation of transcript, which is strongly induced in minimal medium but depressed in rich medium. A time-course study of the infection process of the wild-type isolate on a susceptible wheat genotype revealed that the transcript level of GLU1 increased more than 8000-fold 8 h after inoculation. To study its potential function in pathogenicity, GLU1 was silenced via a sense and antisense mediated silencing mechanism. One transformant named C1 showed significantly reduced growth and sporulation relative to the wild-type. Cytological analysis of the infection revealed that C1 produced significantly lower numbers of germ tubes and appressoria than the wild-type strain on susceptible wheat leaves. This strain, as well as another two transformants, caused significantly less disease symptoms relative to the wild-type after inoculation onto a susceptible wheat genotype. These results indicate that GLU1 contributes to the development and virulence of P. tritici-repentis . • A glucanase gene ( GLU1 ) was cloned from Pyrenophora tritici-repentis . • GLU1 expression is induced during pathogenesis but depressed by rich medium. • Knockdown of GLU1 affected colony growth, sporulation, and germ tube development. • The knockdown strains showed reduced virulence." @default.
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- W1976543228 date "2013-10-01" @default.
- W1976543228 modified "2023-09-29" @default.
- W1976543228 title "An exo-1,3-β-glucanase GLU1 contributes to the virulence of the wheat tan spot pathogen Pyrenophora tritici-repentis" @default.
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- W1976543228 doi "https://doi.org/10.1016/j.funbio.2013.07.003" @default.
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