Nematicidal Activity of Oxalic and Citric Acids Isolated from a Nematicidal Fungus, Aspergillus nige

• 作 者: LiuTing;DongDan;ZhangTaotao;WuHuiling;LiuDewen;LuCaige;ZhangDianpeng;QiuJiyan;LiuWeicheng;
• 机 构: Institute of Plant and Enviromental Protection, Beijing Academy of Agricultural and Forestry Science
• 出 处: 中国植物病理学会2014年学术年会
• 发表日期: 2014年期

　　Aspergillus niger, a genus of filamentous fungus found in soil, was investigated for production of nematicidal compounds.To this end, A.niger isolate y-61 was grown in Czapek-Dox medium,and culture broth filtrate was tested for activity against the nematodes Meloidogyne incognita (root-knot nematode).Oxalic and citric acids, were isolated based on bioassay-guided fractionation of culture filtrates against M.incognita.The median lethal concentrations (LC50) at 24h were 74.2mg/L and 9024.3mg/L against M.incognita, respectively.