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Perspective of entomopathogenic fungi as biological control agents
Jae Su Kim,Se Jin Lee,Jong Chul Kim,Sihyeon Kim,Jeoung Seon Yu,Min Ho Song,Mi Long Lee,Yi-Ting Yang,Yu-Shin Nai,Jeoung Jun Kim,Yeon Ho Je 한국응용곤충학회 2015 한국응용곤충학회 학술대회논문집 Vol.2015 No.10
The present issue of insect resistance and environmental toxicity of pesticides is triggering deep discussion about the pest management tactics, in which pest monitoring and control activity are mainly involved. Novel control agents, hopefully overcoming the present issues and problems, should be researched and commercially applied to the farm fields. With the monitoring-based research, additionally we have to focus on the control-based, particularly control agent-based research and application. Entomo- pathogenic fungi can used as one of the possible novel control agents once considerations are given to the control of soil- or water-dwelling pests. In our research group, the entomopathogenic fungal library has been constructed using the mealworm-based isolation system, which showed a variety of opportunities of their use in pest control. Important key production technologies including granular formulation have been developed to increase their industrialization. Some entomopathogenic fungal isolates showed high biological performance in the control of rice weevils, western flower thrips and Japanese bettles in field stands. To elucidate the fungal mode of action, a fungal transformation system using AtMT and gene identification tools were established. Recently a more deep study about the relationship between insect and entomopathogenic fungi is be investigated using RNA seq. We suggest that to make the entomopathogenic fungal products be applied to agricultural farm field, R&D of down-stream process should be seriously considered as the key step.
Genetic Distribution of Carbapenem-Resistant Enterobacteriaceae in Seoul Korea, 2018~2020
Sang-Hun Park,So-Hyun Park,Jin-Seok Kim,Jin-Kyung Yu,Jin-Kyoung Kim,Hyo-Sun Suh,Eun Young Kwon,Kyoung Ae Park,Eui Kyung Cha,Jae Min Shin,Hyo-Won Jeoung,Su-Jin Jeon,Young-Ok Hwang,Jib-Ho Lee,Yong-Seoun 대한바이러스학회 2022 Journal of Bacteriology and Virology Vol.52 No.1
Jin, Minghui,Yu, Il-Jeoung,Jeon, Yubyeol The Korean Society of Embryo Transfer 2017 한국동물생명공학회지 Vol.32 No.4
Lysophosphatidic acid (LPA) is an important signaling molecule. Here, the effect and mechanism of LPA on the preimplantation development of porcine embryos during in vitro culture (IVC) was examined. Porcine embryos were cultured in porcine zygote medium (PZM-3) supplemented with $30{\mu}M$ LPA during different days. There was a significantly higher cleavage rate in Day 1-7 and significantly higher total cell number of blastocysts in Day 1-3 and Day 4-7. It was also found that messenger RNA (mRNA) expression level of PCNA, BCL2 and BAX in blastocysts obtained from D1-7 group were significantly higher and BCL2/BAX mRNA ratio in D1-3 group was significantly lower than control group but Day 4-7 and Day 1-7 groups were comparable with control group. Treatment with $20{\mu}M$ PLC inhibitor significantly decreased the embryo cleavage rate and blastocyst formation rate. Moreover, LPA as an activator of PLCs, enhanced the $30{\mu}M$ LPA + $20{\mu}M$ U73122 group embryo cleavage rate which similar with control group. In conclusion, the results suggest that treatment with LPA during IVC improves the porcine early embryo cleavage by activation of PLC signaling pathway and regulate the mRNA expression that contribute to total cell number of blastocysts during blastocyst formation.
붕소 과잉 처리가 2년생 인삼의 지상부 생리장해, 생육 및 무기성분 함량에 미치는 영향
Jin Yu,In Bae Jang,Su Jeoung Suh,Hong Woo Park,Ki Beom Kwon,Ki Hong Kim 한국약용작물학회 2016 한국약용작물학술대회 발표집 Vol.2016 No.05
Background : Boron (B) is an essential element required for the growth of plant. It has a narrow range of optimal concentration from minimum to maximum thresholds than other micro-elements. The study was carried out to investigate to the influence of B excess concentrations on physiological disorder of leaf, growth and mineral concentration of ginseng to obtain basic information for physiological disorder diagnose. Methods and Results : The ginseng cultivar ‘Gumpoong’ was cultivated by hydroponic system for 2 months. The toxicity symptoms which ginseng leaves were curved downwardly and induced to chlorosis after beginning to dry the edge appeared on leaves more than 30 ppm compared to the control(3 ppm). The growth of ginseng was more decreased with higher B concentration. Mn uptake was also decreased as B concentration increased. It was found that B excess hindered the growth of ginseng and was reversely related to Mn uptake. Conclusions : More than B 30 ppm can negatively affect growth and mineral uptake. Consequently, B excess can occur physiological disorder of ginseng.