The Korean Journal of Pesticide Science (농약과학회지)

The Korean Society of Pesticide Science (한국농약과학회)
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Biocontrol of Leaf Mustard Powdery Mildew Caused by Erysiphe cruciferarm using Bacillus velezensis YP2

Bacillus velezensis YP2의 겨자채 흰가루병의 생물적 방제

  • Lee, Sang Yeob (Agricultural Microbiology Division, National Institute of Agricultural Sciences, RDA) ;
  • Weon, Hang Yeon (Agricultural Microbiology Division, National Institute of Agricultural Sciences, RDA) ;
  • Kim, Jeong Jun (Agricultural Microbiology Division, National Institute of Agricultural Sciences, RDA) ;
  • Han, Ji Hee (Agricultural Microbiology Division, National Institute of Agricultural Sciences, RDA)
  • 이상엽 (국립농업과학원 농업미생물과) ;
  • 원항연 (국립농업과학원 농업미생물과) ;
  • 김정준 (국립농업과학원 농업미생물과) ;
  • 한지희 (국립농업과학원 농업미생물과)
  • Received : 2016.10.30
  • Accepted : 2016.11.25
  • Published : 2016.12.31
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Abstract

Bacillus velezensis YP2 inhibited the mycelial growth of several plant pathogens including Cercespora spp., Septoria sp., Phoma sp., Botrytis cinerea and Sclerotinia scleotiorum occurring in leafy vegetables. Control efficacy for powdery mildew caused by Erysiphe cruciferarm on red leaf mustard and cheong mustard by treatment of spraying with 10-fold diluted Luria-Bertani (LB) broth of B. velezensis YP2 was 91.8% and 80.9%, respectively. When B. velezensis YP2 was treated four times with five-day interval, three times at seven-day interval and two times at ten day interval in the greenhouse test, the control effect of red leaf mustard powdery mildew was 70.6%, 65.0% and 40.9%, respectively. Also B. velezensis YP2 could promote the seed germination and plant growth of led leaf mustard. The results showed that the culture broth of B. velezensis YP2 was very effective to control the powdery mildew of leaf mustard.

Bacillus velezensis YP2 균주는 쌈채소에서 분리한 Cercospora sp. 1~3, Septoria sp., Colletotrichum sp., Sclerotinia sclerotiorum, Phoma sp., Botrytis cinerea에 대하여 균사생육을 억제하였다. B. velezensis YP2 균주의 LB배양액을 10배 희석액은 적겨자와 청겨자에 발생하는 Erysiphe cruciferarm에 의한 흰가루병을 91.8%와 80.9% 방제효과을 보였다. B. velezensis YP2 균주의 배양액을 10배 희석하여 5일 간격 4회 처리구가 적겨자 흰가루병을 70.6%, 7일 간격 3회 처리구는 65.0%, 10일 간격 2회 처리구는 49.5% 방제하였다. 또한 B. velezensis YP2 균주는 적겨자 종자 발아를 증가시켜고 생육을 촉진하였다. 이상의 결과에서 YP2 균주는 겨자채 흰가루병 방제에 매우 효과적이었다.

Keywords

References

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