나비목 해충에 대한 곤충병원성곰팡이, Beauveria bassiana와 Metarhizium anisopliae의 병원성

윤재수,김형환,김도완,이상명,김동수,이동운,Yun Jae-Su,Kim Hyeong-Hwan,Kim Do-Wan,Lee Sang Myeong,Kim Dong-Soo,Lee Dong-Woon 한국잔디학회 2004 한국잔디학회지 Vol.18 No.4

경북지방에서 분리한 곤충병원성곰팡이 Beauveria bassiana와 Metarhizium anisopliae를 이용하여 나비목 해충인 거세미나방 (Agrotis segetum), 배추흰나비 (Artogeia rapae), 도둑나방 (Mamestra brassicae), 배추좀나방(Plutella xylostella), 파밤나방 (Spodoptera exigua), 담배거세미나방 (S. litura)의 생물적 방제 가능성을 알아보기 위하여 실험한 결과, 거세미나방 2$\cdot$3령충에 대하여 B. bassiana와 M. anisopliae의 반수치사농도 ($LC_50$)는 접종7일 후에 각각 $4.3\times10^6\;conidia/m\ell$와 $2.4\times10^5\;conidia/m\ell$였다. 배추흰나비 2$\cdot$3령충에 대한 B. bassiana와 M. anisopliae의 $LC_50$는 접종 7일 후에 각각 $1.2\times10^7\;conidia/m\ell$와 $5.2\times10^6\;conidia/m\ell$였다. 도둑나방 2$\cdot$3령충에 대한 B. bassiana와 M. anisopliae의 $LC_50$는 접종 7일 후에 각각 $1.5\times10^6\;conidia/m\ell$와 $9.7\times10^5\;conidia/m\ell$였고, 배추좀나방 2$\cdot$3령충에 대한 B. bassiana와 M. anisopliae의 $LC_50$는 각각 $3.0\times10^6\;conidia/m\ell$와 $1.4\times10^6\;conidia/m\ell$였다. 파밤나방 2$\cdot$3령충에 대한 B. bassiana와 M. anisopliae의 $LC_50$는 접종 7일 후에 각각 $6.3\times10^6\;conidia/m\ell$와 $2.6\times10^6\;conidia/m\ell$였고, 담배거세미나방 2$\cdot$3령충에 대한 B. bassiana와 M. anisopliae의 $LC_50$는 각각 $1.6\times10^7\;conidia/m\ell$와 $3.4\times10^6\;conidia/m\ell$였다. Biological control of lepidopterous insect pests, Agrotis segetum, Artogeia rapae, Mamestra brassicae, Plutella xylostella, Spodoptera exigua, and S. litura with entomopathogenic fungi, Beauveria bassiana and Metarhizium anisopliae isolated from Gyeongbuk province were investigated. Mean lethal concentration ($LC_50$) values of B. bassiana and M. anisopliae against $2\cdot3rd$ instar of A. segetum larvae were $1.2\times10^7\;conidia/m\ell$ and $5.2\times10^6\;conidia/m\ell$, respectively. $LC_50$ values of B. bassiana and M. anisopliae against $2\cdot3rd$ instar of A, rapae larvae were $1.2\times10^7\;conidia/m\ell$ and $5.2\times10^6\;conidia/m\ell$, respectively. $LC_50$ values of B. bassiana and M. anisopliae against $2\cdot3rd$ instar of M. brassicae and P. xylostella, larvae were $1.5\times10^6\;conidia/m\ell$, $9.7\times10^5\;conidia/m\ell$, $3.0\times10^6\;conidia/m\ell$ and $1.4\times10^6\;conidia/m\ell$, respectively. $LC_50$ values of B. bassiana and M. anisopliae against $2\cdot3rd$ instar of S. exigua, and S. litura larvae were $6.3\times10^6 \;conidia/m\ell$, $2.6\times10^6\;conidia/m\ell$, $1.6\times10^7\;conidia/m\ell$ and $3.4\times10^6\;conidia/m\ell$ respectively.

가잠(家蠶)에서 분리(分離)된 새로운 미포자충(微胞子蟲) K79의 병리학적(病理學的) 연구(硏究) -미포자충(微胞子蟲) 포자(胞子)의 정제(精製) 및 식별(識別)-

윤재수 ( Jae Su Yun ),임종성 ( Jong Sung Lim ) 한국잠사학회 1984 한국잠사곤충학회지 Vol.26 No.2

미포자충 포자의 정제법을 개발하고 포자표면의 혈청학적 반응을 구명하기 위하여 수행한 시험결과를 요약하면 다음과 같다. 1. 미포자충 포자의 분리정제는 예비원심-percoll 평형밀도원심-세척의 3단계 법이 우수하였고, 분리 정제된 포자는 극사추출에 나쁜 영향도 받지 않았다. 2. 포자의 형태는 K79 포자가 장타원형(장단경비 2.76)이고 N. bombycis는 단타원형(장단경비 2.07)으로 양포자가 상이하였다. 3. 형광항체 간접법에 의하여 항 N. bombycis 포자혈청에 대하여는 N. bombycis 포자만이 강한 형광을 발현하였으나 항 K79 포자의 혈청에 대하여는 10배희석구에서는 양포자 모두 강하게, 20배 이상 희석구에서는 약하게 형광을 발현하였고 K79포자의 특이항체가 포자외각에 인정되었다. The present study was made to establish the purification method of mature microsporidian spores by iso-density equilibrium technique using percoll and the serological discrimination by an indirect fluorescent antibody technique. The purification of new microsporidian spores took effect in the three steps purification method (precentrifugation-percoll iso-density equilibrium centrifugation-rising). There were clear differences in the size of spores between the new microsporidia and N. bombycis. The spores of N. bombycis is short elliptical of 2.07 in a ratio of length to width in diameter while that of new microsporidia is characterized with long elliptical shape which shows a ratio of 2.76 in length to width in diameter. The specific antigens of new microsporidia K79 spores was showed in the spores wall by the indirect fluorescent antibody reaction, and it was affected by the antibody against N. bombycis which antiserum was diluted in 1:20. It means that the new microsporidia K79 is serologically not identical to N. bombycis.

나비목 해충에 대한 곤충병원성곰팡이, Beauveria bassiana와 Metarhizium anisopliae의 병원성

윤재수(Jae-Su Yun),김형환(Hyeong-Hwan Kim),김도완(Do-Wan Kim),이상명(Sang Myeong Lee),김동수(Dong-Soo Kim),이동운(Dong-Woon Lee) 한국잡초학회·한국잔디학회 2004 Weed & Turfgrass Science Vol.18 No.4

Biological control of lepidopterous insect pests, Agrotis segetum, Artogeia rapae, Mamestra brassicae, Plutella xylostella, Spodoptera exigua, and S. litura with entomopathogenic fungi, Beauveria bassiana and Metarhizium anisopliae isolated from Gyeongbuk province were investigated. Mean lethal concentration (LC_50) values of B. bassiana and M. anisopliae against 2ㆍ3rd instar of A. segetum larvae were 1.2×10^7 conidia/㎖ and 5.2×10^6 conidia/㎖, respectively. LC_50 values of B. bassiana and M. anisopliae against 2ㆍ3rd instar of A. rapae larvae were 1.2×10^7 conidia/㎖ and 5.2×10^6 conidia/㎖, respectively. LC_50 values of B. bassiana and M. anisopliae against 2ㆍ3rd instar of M. brassicae and P. xylostella, larvae were 1.5×10^6 conidia/㎖, 9.7×10^5 conidia/㎖, 3.0×10^6 conidia/㎖ and 1.4×10^6 conidia/㎖, respectively. LC_50 values of B. bassiana and M. anisopliae against 2ㆍ3rd instar of S. exigua, and S. litura larvae were 6.3×10^6 conidia/㎖, 2.6×10^6 conidia/㎖, 1.6×10^7 conidia/㎖ and 3.4×10^6 conidia/㎖ respectively.

눈꽃 동충하초균의 누에감염에 관한 연구

윤재수(Yun Jae-Su) 한국농약과학회 2000 농약과학회지 Vol.4 No.4

동충하초 감염 누에의 병리형태학적 특성

윤재수(Yun Jae-Su) 한국농약과학회 2009 농약과학회지 Vol.13 No.3

골프장에서 지렁이의 발생과 식물체 추출물이 지렁이에 미치는 영향

이동운,홍용,정영학,최성환,추호렬,윤재수,Lee, Dong-Woon,Hong, Yong,Jung, Young-Hack,Choi, Sung-Hwan,Choo, Ho-Yul,Yun, Jae-Su 한국잔디학회 2010 한국잔디학회지 Vol.24 No.1

골프장에서 지렁이의 발생생태와 식물체 유래 물질이 지렁이의 발생에 미치는 영향을 경기도 가평베네스트골프장과 안성베네스트골프장, 부산의 동래베네스트골프장에서 알아보았다. 지렁이의 밀도를 월별로 조사한 결과, 안성베네스트골프장에서만 차이를 보여 2006년 7월에 가장 밀도가 높았다. 1971년에 개장한 동래베네스트골프장에서는 페어웨이와 러프 지역 간에 지렁이의 밀도는 차이가 없었으나 1999년 이후에 개장한 가평베네스트골프장과 안성베네스트골프장에서는 페어웨이에 비하여 러프의 지렁이 밀도가 높았다. 동일 골프장에서는 코스의 조성 년도가 오래된 곳일수록 지렁이의 밀도가 높았다. 식물 정유인 mustard oil(Brassica spp.)과 wintergreen oil(Gaultheria procumbens) 및 한약재 추출물(사군자: Quisqualis indica, 원화: Daphne genkwa, 흑축: Pharbitis nil, 건강: Zingiber officinale, 창이자: Xanthium strumarium), 차나무(Camellia sinensis) saponin을 이용하여 지렁이에 대한 독성을 조사한 결과, mustard oil과 wintergreen oil 및 tea saponin의 독성이 높았다. Pot 실험결과 12.4% 유효성분량 tea saponin 분말 500배 살포 시에 대조약제인 ethoprophos와 동일한 100%의 치사율을 보였다. Occurrence of earthworms for turfgrass growing seasons and effect of earthworms by some plant extracts and plant oils in golf courses were investigated at the three locations golf courses in Korea 2005 to 2006. There were no differences in monthly occurrence of earthworm except Anseong Benest Golf Club, namely, Anseong Benest Golf Club was highly occurred in July in 2006. Density of earthworm was not different between fairway and rough in Dongrae Benest Golf Club (opened in 1971) while density was higher in rough than fairway in Anseong Benest Golf Club (opened in 1999) and Gapyeong Benest Golf Club (opened in 2000). In case of Gapyeong Benest Golf Club, earthworm density was higher in old courses than recently opened courses. Effect of plant extracts such as mustard oil, wintergreen oil, Quisqualis indica, Daphne genkwa, Pharbitis nil, Zingiber officinale, Xanthium strumarium, and Camellia sinensis on earthworm, mustard oil, wintergreen oil and tea saponin were highly toxic to earthworm, Eisenia andrei. In the pot experiment, 100% of Eisenia andrei was dead at the treatment of 500-fold of aquatic solution of tea saponin (12.4% a.i.).

家蠶에서 分離된 새로운 微胞子蟲 K79의 病理學籍 硏究 : Ⅱ .微胞子蟲의 病原成 및 發育經過 Ⅱ.Pathogenicity and Developmental Progress of the Microsporidia

尹在洙,林種聲 한국잠사학회 1985 한국잠사곤충학회지 Vol.27 No.1

In order to clarify the taxanomic position of a new microsporidia K79 which was isolated from the silkworm larvae, Bombyx mori L. in Korea in 1979, the following several experiments such as estimation of pathogenicity in diferent instar, histopathological examination under light and electronic microscope and examination of fine structures of the spores were carried out and their results obtained are as follows. In the test of pathogenicity by oral inoculation, the new microsporidia K79 was lower than Nosema bombycis and the susceptibility of the new microsporidia to silkworm was getting lower as the silkworm larvae grew. The lesion of Silkworms' tissue which was infected with the new microsporidia K79 was found in the epithelial cells of trachea, fat body and silk gland cells. The developmental process of the new microsporidia K79 in vivo could be divided into the following five stages: sporoplasm, schizont, sporont, sporoblast, and spore. This process was just the same as that of N. bombycis, but its development was slower than that of N. bombycis. Several differences in the fine structure of the spore under electron microscope, which could be important keys for the classification of microsporidia, were obtained. Anchoring disk and polaroplast lamella of the new microsporidian spore were disclosed to be different from those of N. bombycis. An average number of polar filament coils of the new microsporidian spore was 16 at an angle of 75°. On the basis of various keys for the classification of microsporidia, the results obtained from various experiments proved that the newly isolated microsporidia should be classified into the Genus, "Nosema", but its further classification for species should be conducted in the future. Therefore, it may be reasonable that the new microsporidia is temperally classified as Nosema sp. K79 considering the fact that it was discovered in Korea in 1979.