Nematicidal endophytic bacteria obtained from plants

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• 作者：Lijun Zheng (1) (2)
  Guohong Li (1) (2)
  Xingbiao Wang (1) (2)
  Wenzheng Pan (1) (2)
  Lei Li (1) (2)
  Lv Hua (1) (2)
  Fangfang Liu (1) (2)
  Lizhi Dang (1) (2)
  Minghe Mo (1) (2)
  Keqin Zhang (1) (2)
  
• 关键词：Brevundimonas diminuta ; endophytic bacteria ; nematicidal ; (R) ; (? ; 2 ; ethylhexan ; 1 ; ol
• 刊名：Annals of Microbiology
• 出版年：2008
• 出版时间：December 2008
• 年：2008
• 卷：58
• 期：4
• 页码：569-572
• 全文大小：74KB
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• 作者单位：Lijun Zheng (1) (2)
  Guohong Li (1) (2)
  Xingbiao Wang (1) (2)
  Wenzheng Pan (1) (2)
  Lei Li (1) (2)
  Lv Hua (1) (2)
  Fangfang Liu (1) (2)
  Lizhi Dang (1) (2)
  Minghe Mo (1) (2)
  Keqin Zhang (1) (2)
  
  1. Key Laboratory for Conservation and Utilization of Bio-resource, Yunnan University, Kunming, 650091, Yunnan, China
  2. Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan University, Kunming, 650091, Yunnan, China
  
• ISSN：1869-2044

文摘

Two hundred and six bacterial isolates were obtained from leaf, flower and stem of three healthy plants,Euphorbia pulcherrima Willd,Pyrethrum cinerariifolium Trev. andHeracleum candicans Wall. The nematicidal activity experiment showed that a total of 92 isolates displayed activity againstCaenorhabditis elegans (Maupas) Dougherty, and 70 isolates resulted active againstBursaphelenchus xylophilus (Steiner & Buhrer) Nickle. Strain LCB-3 exhibited the strongest nematicidal activity against both two nematodes. According to the 16S rDNA, the strain LCB-3 was identified asBrevundimonas diminuta. Based on bioassay-guided fractionation, a nematicidal metabolite (R)-(?-2-ethylhexan-1-ol was obtained from LCB-3. The median lethal concentrations (LC50) of the compound were 542.0 mg l? againstC. elegans and 168.1 mg l? againstB. xylophilus 48 h after treatment.