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Streptomyces felleus YJ1: Potential Biocontrol Agents Against the Sclerotinia Stem Rot (Sclerotinia sclerotiorum) of Oilseed Rape

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  • Guanglong Cheng
  • Yun Huang
  • Hui Yang
  • Fan Liu

Abstract

In order to explore the biocontrol potential of Streptomyces felleus YJ1 to sclerotinia stem rot of oilseed rape, we evaluated the effects of YJ1 as antagonistic strain on Sclerotinia sclerotiorum, including germination and formation of sclerotia, ascospore germination, mycelial growth and YJ1 colonization ability. We found the fermentation filtrate of YJ1 could inhibit sclerotia and ascospore germination and mycelial growth. In dual culture the inhibition zone diameter of YJ1 against S. sclerotiorum was 11.0 mm, and the inhibition rate reached to 80.26%. The ascospores germination was also significantly inhibited by YJ1 fermentation filtrate. In addition, YJ1 could colonize stably in rhizosphere and roots of rape. Otherwise, in the greenhouse we found the lesion would become smaller and slighter if the inoculated leaves were pretreated with YJ1 fermentation liquid. Therefore, our results strongly suggested that YJ1 was a promising biocontrol agent for control of oilseed rape sclerotinia stem rot.

Suggested Citation

  • Guanglong Cheng & Yun Huang & Hui Yang & Fan Liu, 2014. "Streptomyces felleus YJ1: Potential Biocontrol Agents Against the Sclerotinia Stem Rot (Sclerotinia sclerotiorum) of Oilseed Rape," Journal of Agricultural Science, Canadian Center of Science and Education, vol. 6(4), pages 1-91, March.
    • Handle: RePEc:ibn:jasjnl:v:6:y:2014:i:4:p:91
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    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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