Herbicidal Characteristics of Soil Bacteria Actinomycetes G-0299 to Southern Crabgrass

토양 방선균 Actinomycetes G-0299의 바랭이에 대한 선택적 살초특성

  • Choi, Jung-Sup (Eco-friendly and New Materials Research Center, Korea Research Institute of Chemical Technology) ;
  • Kim, Young Sook (Eco-friendly and New Materials Research Center, Korea Research Institute of Chemical Technology) ;
  • Kim, Jae Deok (Eco-friendly and New Materials Research Center, Korea Research Institute of Chemical Technology) ;
  • Kim, Hye Jin (Eco-friendly and New Materials Research Center, Korea Research Institute of Chemical Technology) ;
  • Ko, Young-Kwan (Eco-friendly and New Materials Research Center, Korea Research Institute of Chemical Technology) ;
  • Park, Kee Woong (Department of Crop Science, Chungnam National University) ;
  • Moon, Surk-Sik (Department of Chemistry, Kongju National University)
  • Received : 2017.09.08
  • Accepted : 2017.09.26
  • Published : 2017.09.30


An actinomycetes isolate G-0299 obtained from a forest soil showed strong phytotoxic activity to Digitaria ciliaris. For the foliar application study, the culture filtrate of the isolate G-0299 showed strong herbicidal activity only to D. ciliaris among the 12 monocot and 5 dicot weed species. And herbicidal activity at a concentration of 500, 250, 125 and $62.5{\mu}gmL^{-1}$ of culture filtrate was 100%, 98%, 70% and 40%, respectively. Phytotoxic symptoms of the culture filtrate by foliar application were desiccation and burn-down or bleaching of leaves and finally plant death. And then the herbicidal activity was exhibited only under the light condition. Also, chlorophyll loss of D. ciliaris leaf tissues in the light condition was much higher than in the dark condition and then chlorophyll content decreased 82%, 5%, respectively. In conclusion, our results suggest that soil bacteria, isolate G-0299 could be a good candidate for new bio-herbicide and provide a new lead molecule for a more unique herbicide.


Actinomycetes isolate G-0299;Digitaria ciliaris;Herbicidal efficacy;Light dependent;Secondary metabolite(s)


Grant : Development of crop protection agents leading the future market



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