Nested allele-specific PCR primers distinguish genetic groups of Uncinula necator.

Abstract excerpt

Isolates of the obligately biotrophic fungus Uncinula necator cluster in three distinct genetic groups (groups I, II, and III). We designed PCR primers specific for these groups in order to monitor field populations of U. necator. We used the nucleotide sequences of the gene that encodes eburicol 14alpha-demethylase (CYP51) and of the ribosomal DNA internal transcribed spacer 1 (ITS1), ITS2, and 5. 8S regions. We...

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