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Lipopeptide를 생산하는 슈도모나스 균을 이용한 복숭아혹진딧물과 진딧물 매개 식물 바이러스병 동시 방제
임다정 ( Da Jung Lim ),이정은 ( Jeong Eun Lee ),김여희 ( Yeo Hee Kim ),김인선 ( In Seon Kim ) 한국환경농학회 2018 한국환경농학회 학술대회집 Vol.2018 No.-
Green peach aphid (Myzus persicae) and Cucumber mosaic virus (CMV) are one of the most harmful insect and plant disease affecting agricultural productivity worldwide. In the present study, we isolated microorganisms exhibiting dual control activity against M. persicae and CMV. Among 103 bacterial isolates, an isolate bacteria showed significant insecticidal and antiviral activity. The isolate was named as a Pseudomonas sp. DJ15 (DJ15) based on 16S rRNA sequence analysis. The cell-free supernatant of DJ15 showed 100% of aphid mortality. The cell-free supernatant reduced the symptom severity in pepper plants infected with CMV. These results suggest that DJ15 is potential to control M. persicae and CMV for their potential to contribute toward management of viral plant diseases.
이정은 ( Jeong Eun Lee ),임다정 ( Da Jung Lim ),김여희 ( Yeo Hee Kim ),김인선 ( In Seon Kim ) 한국환경농학회 2018 한국환경농학회 학술대회집 Vol.2018 No.-
In 2003, the invasive hornet, Vespa velutina, arrived in southern Korea and spread rapidly. V. velutina has been a serious threat to honeybee colonies. Many studies have conducted to limit the impact and proliferation of V. velutina based on nest destruction, trapping, population genetics and biological control. This study investigated the attractive effects of volatile organic compounds (VOCs) produced by microorganism. Microorganisms were isolated from agricultural fermented broth, and an isolate was identified as Bacillus jeotgali BV-1 based on 16S rRNA sequence analysis. The VOCs were extracted using a Solid Phase Microextraction (SPME) technique and determined by Gas Chromatography-Mass Spectrometry (GC/MS). The total number of VOCs identified from B. jeotgali BV-1 culture were 9 and 12 at 30% and 50% sugar medium, respectively. The most abundant is 3-methyl butanol. Based on the data, B. jeotgali BV-1 was suggested as a potential agent for attracting V. velutina.
복숭아혹진딧물 방제용 식물추출물 탐색 및 살충성분 구명
양시영 ( Si Young Yang ),임다정 ( Da Jung Lim ),김여희 ( Yeo Hee Kim ),김인선 ( In Seon Kim ) 한국환경농학회 2018 한국환경농학회지 Vol.37 No.2
BACKGROUND: Green peach aphid (Myzus persicae) is an insect pest that significantly affects crop production. A number of pesticides have been used for aphid control, but their concerns on insect resistance and food safety have required alternative methods for pest management. In an effort to find for an alternative approach to aphid control, we screened plants extracts and examined their potentiality as insecticidal bio-resources. METHODS AND RESULTS: Two hundred and ninety eight plant extracts were examined for insecticidal activity against the aphid, and the best candidate among them was chosen for further study. The extracts from Cinnamomum camphora was determined to be the best candidate exhibiting insecticidal activity more than 60% at a level of 1,000 ㎍/mL. GC/MS analyses detected camphor, borneol, 4-terpineol, α-terpineol and caryophyllene oxide as major compositions from the extracts obtained by hydrodistillation. Caryophyllene oxide exhibited the highest insecticidal activity with a LC<sub>50</sub> value of 237 ㎍/mL. Camphor lowered significantly the LC<sub>50</sub> value of caryophyllene oxide and increased largely its concentration in aphid, suggesting that camphor played a role in enhancing the insecticidal activity of caryophyllene oxide. CONCLUSION: This study suggested that camphor and caryophyllene oxide may be used as an insecticidal bio-resource for insect control against green peach aphid.
장태호,홍정길,김여희 대한마취과학회 1982 Korean Journal of Anesthesiology Vol.15 No.1
Blood transfusion is indicated the surgical patient to maintain circulating blood volume, provide adequate oxygenation, and maintain clotting factor levels. Anethesiologists should known the time and volume of blood transfusion in order to carry out transfusion effectively. We measured the amount of transfused blood and plasma expander used during general or spinal anesthesia surgery for four years (from Jan. 1977 to Dec. 1980) and obtained the following results. The total amound of transfused blood were 6563 pints and those of plasma expander were 1769 bottles. The compensated amounts to blood loss were average 1044 ml in each case. The amounts of tranfused blood used in each surgical dept. were different. The thoracic surgery department used the most averaging 4.76 pints and least in urologic dept. at 1.48 pints. The number of operations increased year after year but the average amount of transfused blood showed a decreasing tendency and that of plasma expander showed increasing tendency. The average compensated amount for blood loss among the following operations were 831 ml in a gastrectomy, 895 ml in a hysterectomy, 1089 ml in a nephrectomy, 2244 ml in a lobectomy, 1165 ml in a craniotomy and 1313 ml in a intramedullary nailing.