유용세균(Beneficial Bacterial Agents)을 이용한 배추 무름병의 생물적 방제 Biological Control of Soft Rot on Chinese Cabbage Using Beneficial Bacterial Agents in Greenhouse and Field원문보기
세 종류의 유용세균, Lactobacillus KLF01, Lactococcus KLC02 그리고 Paenibacillus KPB3는 무름병원세균 Pectobacterium carotovorum subsp. carotovorum (Pcc)에 대한 기내 길항효과를 나타내었으며, 온실 내 포트에서 배추 무름병에 대한 생물적 방제 효과를 병원균 접종 4, 8, 12일 후 각각 조사한 결과 KLC02 균주는 64%, 50%, 56%, KPB3 균주는 66%, 57%, 58%로 나타났다. 반면, KLF01 균주는 KLC02 및 KPB3 균주에 비해 그 효과가 다소 낮았으나 유의성이 인정될 수 있는 방제효과로 조사되었다. 또한 재배포장에서 배추 무름병에 대한 생물적 방제효과는 KLF01, KLC02 및 KPB3 모두 각각 55%, 60% 그리고 62%로 매우 효과적임을 알 수 있었다. 따라서 세 종류의 유용세균 Lactobacillus KLF01, Lactococcus KLC02 그리고 Paenibacillus KPB3 균주를 이용하여 배추 무름병을 억제하기 위한 생물적 방제제로 활용할 수 있음을 보고한다.
세 종류의 유용세균, Lactobacillus KLF01, Lactococcus KLC02 그리고 Paenibacillus KPB3는 무름병원세균 Pectobacterium carotovorum subsp. carotovorum (Pcc)에 대한 기내 길항효과를 나타내었으며, 온실 내 포트에서 배추 무름병에 대한 생물적 방제 효과를 병원균 접종 4, 8, 12일 후 각각 조사한 결과 KLC02 균주는 64%, 50%, 56%, KPB3 균주는 66%, 57%, 58%로 나타났다. 반면, KLF01 균주는 KLC02 및 KPB3 균주에 비해 그 효과가 다소 낮았으나 유의성이 인정될 수 있는 방제효과로 조사되었다. 또한 재배포장에서 배추 무름병에 대한 생물적 방제효과는 KLF01, KLC02 및 KPB3 모두 각각 55%, 60% 그리고 62%로 매우 효과적임을 알 수 있었다. 따라서 세 종류의 유용세균 Lactobacillus KLF01, Lactococcus KLC02 그리고 Paenibacillus KPB3 균주를 이용하여 배추 무름병을 억제하기 위한 생물적 방제제로 활용할 수 있음을 보고한다.
Three beneficial bacterial agents, Lactobacillus strain KLF01, Lactococcus strain KLC02 and Paenibacillus strain KPB3 were showed clear zone against plated Pectobacterium carotovorum subsp. carotovorum (Pcc) soft rot pathogen. In greenhouse test, bio-control efficacy was more significantly effective...
Three beneficial bacterial agents, Lactobacillus strain KLF01, Lactococcus strain KLC02 and Paenibacillus strain KPB3 were showed clear zone against plated Pectobacterium carotovorum subsp. carotovorum (Pcc) soft rot pathogen. In greenhouse test, bio-control efficacy was more significantly effective in the treatments by KLC02 and KPB3 as 64%, 50%, 56% and 66%, 57%, 58% according to date of evaluation, respectively. In case of KLF01 control effect was relatively lower than treatments of KLC02 and KPB3 but its efficacy was still significantly observed when compared to control (only water treatment). Furthermore, KLF01, KLC02 and KPB3 showed 55%, 60% and 62% bio-control efficacy, respectively in field test from early March to late July of 2009. Thus, we suggest that these strains can be useful as bio-control agents against soft rot caused by Pcc.
Three beneficial bacterial agents, Lactobacillus strain KLF01, Lactococcus strain KLC02 and Paenibacillus strain KPB3 were showed clear zone against plated Pectobacterium carotovorum subsp. carotovorum (Pcc) soft rot pathogen. In greenhouse test, bio-control efficacy was more significantly effective in the treatments by KLC02 and KPB3 as 64%, 50%, 56% and 66%, 57%, 58% according to date of evaluation, respectively. In case of KLF01 control effect was relatively lower than treatments of KLC02 and KPB3 but its efficacy was still significantly observed when compared to control (only water treatment). Furthermore, KLF01, KLC02 and KPB3 showed 55%, 60% and 62% bio-control efficacy, respectively in field test from early March to late July of 2009. Thus, we suggest that these strains can be useful as bio-control agents against soft rot caused by Pcc.
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제안 방법
The tested plants were maintained in the greenhouse with a normal conditions at 28-32℃. Disease assessment was performed every 4th, 8th and 12th days after pathogen inoculation. Disease severity was assessed as described by Champosieau et al.
Experiments were carried out in greenhouse to evaluate the suppressive effect of tested strains and its integrated treatments on soft rot. The seedling of Chinese cabbage was grown under greenhouse conditions.
Standard deviation is shown in bars. Treatment includes control (water), streptomycin, KLF01, KLC02, KPB3, integrated treatments KLF01+KPB3, and KLC02+KPB3.
대상 데이터
Experiments were conducted on experimental farm of the Kangwon National University during the season of 2009. Seeds were sown in plastic boxes (50 × 40 × 10 cm) containing the soil in mid of February and transplanted into a plastic pot (8 cm diameter) containing the same soil, one plant per pot in early of March.
성능/효과
Under greenhouse conditions, plant inoculated with the antagonistic strains reduced disease severity. Analysis of the data from three replicates of each experiment with Chinese cabbage indicated that diseased plants were significantly reduced in compared to the control after post-inoculation of tested strains. However, the integrated treatment was unable to show significant effect against the pathogen.
days after inoculation. Bio-control efficacy was more significantly effective in the treatments by KLC02 and KPB3 as 64%, 50%, 56% and 66%, 57%, 58% according to date of evaluation (Fig. 2b). In case of KLF01, control effect was relatively lower than treatments of KLC02 and KPB3, but its efficacy was still significantly observed when compared to control (only water treatment).
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