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Bacterial rot diseases of cultivted mushrooms in Japan

Research Project

Project/Area Number 60560057
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 植物保護
Research InstitutionTokyo University of Agriculture

Principal Investigator

SUYAMA Kazuo  Fuculty of Agriculture, TUA. Lecturer, 農学部, 講師 (10078181)

Project Period (FY) 1985 – 1986
Project Status Completed (Fiscal Year 1986)
Budget Amount *help
¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1986: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1985: ¥800,000 (Direct Cost: ¥800,000)
KeywordsBacterial rot / Pseudomonas tolaasii / Identification / White line / Lentinus edodes / Pleurotus ostreatus / Flammulina uelutipes
Research Abstract

Scince 1980, bacterial rot diseases of oyster mushroom (Pleurotus ostreatus) have been found in cultivated field and markets causing severe damage in Japan.
Affected mushrooms useally showed brown spot, browning and blotch symptoms resembling to brown blotch disease of Agaricus bisporus reported in Europe. Now, these diseases were commonly observed and distributed widly on cultivated oyster mushrooms or other edible mushrooms.
Causal organisms were isolated from Pleurotus ostreatus, Lentinus edodes, Flammulina uelutipes and Agaricus bisporus, and were identified as Pseudomonas tolaasii according to their bacterial characteristics. Non-pathogenic fluorescent pseudomonads were isolated from diseased and healthy mushrooms together with P. tolaasii. White line was produced between P. tolaasii and non-pathogenic pseudomonads colonies when two bacteria were inoculated side to side on pseudomonas agar F. This white line was produced only between P. tolaasii and non-pathogenic pseudomonad combination, but not among the same bacterial isolates or other plant pathogenic bacteria except some isolates of P. marginalis. This reaction was specfic, and it could be used for the simple identification and detection of P. tolaasii as described by Wong and Preece (1979).
By appling white line methods, P. tolaasii was detected from coated drops on cap tissue of oyster mushrooms, shelves and various materials in cultivatin room of oyster mushrooms. After hiting shelves or others, these drops turned into aerosols and were floating in the air for a long time. Aerosols containing P. tolaasii were continuously discharged under moist condition, and they are considered to be an important source of second infection for bacterial rot diseases of edible mushrooms.

Report

(1 results)
  • 1986 Final Research Report Summary
  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] 陶山一雄: 日本植物病理学会報(講要). 53. (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 陶山一雄: 日本植物病理学会報(講要). 53. (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Kazuo SUYAMA: "Detection of Pseudomonas tolaasii from cutivated mushrooms used white line methods." Annals of the Phytopathological Society of Japan. 53. (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Kazuo SUYAMA: "Detection of Pseudomonas tolaasii from floating aerosols in cultivation room of oyster mushroom." Annals of the Phytopathological Society of Japan. 53. (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary

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Published: 1987-03-31   Modified: 2016-04-21  

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