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First Report on Purpureocillium lilacinum Infection of Indoor-Cultivated Morel Primordia

Author

Listed:
  • Segula Masaphy

    (Applied Mycology and Microbiology Department, MIGAL-Galilee Research Institute, Kiryat Shmona 11016, Israel
    Department of Food Sciences, Tel Hai College, Upper Galilee 12210, Israel)

Abstract

The cultivation of morel mushrooms ( Morchella spp.) outdoors or in controlled indoor systems is a relatively new practice, and infections are beginning to be observed. Infection of indoor-cultivated Morchella rufobrunnea initials (primordia) occurred at our research facilities in Israel. The mushroom initials turned brown, were covered with a dense white mycelium of a foreign fungus and were disintegrated soon after. The isolation of a fungal contaminant from the infected mushroom revealed small colonies with a pinkish spore zone on potato dextrose agar medium. Molecular identification using partial large subunit 28S ribosomal DNA and rRNA internal transcribed spacer sequences identified the fungus as Purpureocillium lilacinum . Inoculation of Morchella colony on agar plat with the isolated fungus caused browning and inhibition of mycelial growth. Inoculation of a healthy primordium with P. lilacinum spores resulted in its browning and deterioration. This is the first report of an infection of indoor-cultivated mushroom and the first showing P. lilacinum as a pathogen of morels.

Suggested Citation

  • Segula Masaphy, 2022. "First Report on Purpureocillium lilacinum Infection of Indoor-Cultivated Morel Primordia," Agriculture, MDPI, vol. 12(5), pages 1-7, May.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:5:p:695-:d:815624
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