http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
복합기능미생물 Bacillus velezensis GH1-13을 이용한 미생물제형 개발 및 생물학적 특성
박준경(Jun-Kyung Park),서선일(Sun-Il Seo),한귀환(Gui Hwan Han),김공민(Kong-Min Kim),김대혁(Dae-Hyuk Kim),송재경(JaeKyeong Song),김평일(Pyoung Il Kim) 한국생물공학회 2018 KSBB Journal Vol.33 No.4
Biological control of plant diseases including bacterial and fungal pathogens has been deliberated as a viable alternative method to harmful and expensive chemical control. Bacillus velezensis GH1-13 strain was reported as a multifunctional biological agent which inhibits the plant pathogens and utilized in sustainable agriculture for improving growth of the crops. The objective of this study is to evaluate the biological potential of Bacillus velezensis GH1-13 for effective use in agriculture and industrialization. The microbial formulations of GH1-13 strain were performed into liquid, powder, granule and pellet types. Total viable cells of four microbial formulations were verified more than 107 cfu/mL(g) during 8 weeks at 40℃, and the storage stability was considered under severe condition. Plant growth promoting of four formulation types were examined to pepper and tomato plants. The powder type showed the best effect such as stem length 25.6±0.72 cm, 10 petiole and stem length 35.3±0.46 cm, 11 petiole of pepper and tomato plant, respectively. Biocontrol effect of liquid and powder types was also tested against Colletotrichum gloeosporioides causing pepper anthracnose. The resulting, 100 fold diluted liquid type exhibited control effect of 65%, and side effect on pepper and tomato plants were not detected. From the results, we suggest that microbial formulations have significant effects as biological agents such as plant growth promoting and controlling the phytopathogenic fungi. In addition, we expect that microbial agent may be useful in agriculture, although further study is needed.
농업 토양으로부터 분리한 carbofuran 분해 세균 Bacillus amyloliquefaciens DYC2-1의 특성
임지환(Ji-hwan Lim),박해성(Haeseong Park),서선일(Sun il Seo),김주은(Ju-eun Kim),김정은(Jung-eun Kim),이철원(Chul-won Lee),김평일(Pyoung il Kim) 한국농약과학회 2021 농약과학회지 Vol.25 No.4
Carbofuran (2,3-dihydro-2,2-dimethyl-7-benzofuranyl N-methylcarbamate) is one of the most frequently used insecticides in agricultural fields worldwide. Although carbofuran has excellent pest control property, its excessive use causes soil and river pollution. To remove the pesticide from the environment, bioremediation is considered the most inexpensive and efficient method. In this study, carbofuran biodegradable strain was isolated from the agricultural land. Next, identification of the microorganism through 16S rRNA gene sequence analysis and optimization of culture condition were carried out. Finally, the carbofuran degradation capacity of the strain was investigated through individual cultivation. As the result of 16S rRNA gene sequence analysis, the strain was identified as Bacillus amyloliquefaciens with 99.86% homology and named B. amyloliquefaciens DYC2-1. Culture optimization of the DYC2-1 strain was operated using different types of medium and culture conditions. The DYC2-1 showed the highest cell growth when cultured in TSB medium at 30oC and 600 rpm. Based on these results, individual culture for carbofuran degradation was conducted. The DYC2-1 strain was found to degrade about 100 mg/L (97%) of carbofuran over 120 h. Considering B. amyloliquefaciens species commonly possess plant growth promoting ability, the DYC2-1 strain is expected to contribute both soil remediation and enhancement of crop growth in the agricultural field.