Growing with growers since 1946
  • October 2006 Issue
  • DNA fingerprinting shows disease culprits

    Shedding light on which fungal species are causing bull’s-eye rot.

    New technology and DNA fingerprinting has enabled Dr. Bob Spotts to identify new species of fungi that appear to be responsible for some of the bull’s-eye rot infecting tree fruits in the Pacific Northwest. It has been known for some time that two species of Neofabraea—N. malicortis (the organism that causes anthracnose) and N. perennans (the organism that causes perennial canker)—also cause bull’s-eye rot. But Spotts’s research at Oregon State University’s Mid-Columbia Agricultural Research and Extension Center in Hood River, indicates that two other pathogens are involved. One is N. alba, and the other has yet to be named. Rots […]

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