Mycobiology

The Korean Society of Mycology (한국균학회)
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Inhibition Effects of Silver Nanoparticles against Powdery Mildews on Cucumber and Pumpkin

  • Lamsal, Kabir (Division of Bio-Resources Technology, Kangwon National University) ;
  • Kim, Sang-Woo (Division of Bio-Resources Technology, Kangwon National University) ;
  • Jung, Jin-Hee (Division of Bio-Resources Technology, Kangwon National University) ;
  • Kim, Yun-Seok (Division of Bio-Resources Technology, Kangwon National University) ;
  • Kim, Kyoung-Su (Department of Agricultural Biotechnology, Center for Fungal Genetic Resources and Center for Fungal Pathogenesis, Seoul National University) ;
  • Lee, Youn-Su (Division of Bio-Resources Technology, Kangwon National University)
  • Received : 2010.10.21
  • Accepted : 2011.02.16
  • Published : 2011.03.31
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Abstract

Powdery mildew is one of the most devastating diseases in cucurbits. Crop yield can decline as the disease severity increases. In this study, we evaluated the effect of silver nanoparticles against powdery mildew under different cultivation conditions in vitro and in vivo. Silver nanoparticles (WA-CV-WA13B) at various concentrations were applied before and after disease outbreak in plants to determine antifungal activities. In the field tests, the application of 100 ppm silver nanoparticles showed the highest inhibition rate for both before and after the outbreak of disease on cucumbers and pumpkins. Also, the application of 100 ppm silver nanoparticles showed maximum inhibition for the growth of fungal hyphae and conidial germination in in vivo tests. Scanning electron microscope results indicated that the silver nanoparticles caused detrimental effects on both mycelial growth and conidial germination.

Keywords

References

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