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Identifying variation in red raspberry MLO genes thought to provide resistance to powdery mildew
- Zurn Jason Daniel, Meiers Ruth C., Ward Judd, Finn Chad E., Dossett Michael, Bassil Nahla V.
- Acta horticulturae 2020 v. no.1277 pp. 25-32
- Agricultural Research Service, DNA, Rubus idaeus, disease resistance, genes, germplasm, nucleotide sequences, plant pathogenic fungi, powdery mildew
- MLO genes have been shown to provide resistance to powdery mildew pathogens in many plant speces. Powdery mildew has not been well studied in red raspberries and is becoming more of a problem. MLO genes were sequenced in 95 red raspberry varieties from the USDA-ARS National Clonal Germplasm Repository. Two candidate genes thought to provide resistance were identified. In these genes, 22 DNA sequence variations were observed that could indicate the presence of resisistance. Additional work is needed to determine if any of the genes provide resistance.