• 제목/요약/키워드: spodoptera litura

검색결과 133건 처리시간 0.027초

거세미나방속 해충에 독성을 가지는 Bacillus thuringiensis 군주의 분리 및 특성 (Isolation and Characterization of Bacillus thuringiensis Toxic to Spodoptera Species in Kora)

  • 장진희;노종열
    • 한국잠사곤충학회지
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    • 제38권2호
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    • pp.154-159
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    • 1996
  • 전국 토양, 앙장 농가, 저곡 창고, 시설 원예 단지, 과수원, 산, 밭 등에서 분리한 토양과 먼지 등의 시료로부터 거세미나방속 해충에 강한 독성을 보이는 7개 균주를 분류하였다. 이들을 각각 STB-1에서 STB-7까지 명명하였으며 모두 약 130kDA의 내독소 단백질을 형성하였다. 편모항원성 검정 결과 STB-1, STB-2는 B. thuringiensis subsp. kurstaki와 STB-3, STB-4, STB-5는 subsp. kenyae와 반응하였으며 STB-6, STB-7은 기존의 편모항체와 반응하지 않았다. PCR로 유전자형을 분석한 결과 STB-1은 B. thuringiensis subsp. kurastaki에서는 보고되지 않은 cryIE 유전자를 가지고 있으며 STB-5는 subsp. kenyae와는 다른 유전자형을 보였다. 기존의 편모항체와 반응을 보이지 않은 STB-6와 STB-7은 cryIA(a), cryIA(b), cryIC, cryII를 가지고 있었다.

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Purification and Characterization of Antibacterial Peptides, Spodopsin Ia and Ib Induced in the Larval Haemolymph of the Common Cutworm, Spodoptera Iitura

  • 최정식;여성문;김웅석;채권석
    • Animal cells and systems
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    • 제1권3호
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    • pp.457-462
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    • 1997
  • Antibacterial activity was induced in the haemolymph of the common cutworm, Spodoptera litura by the artificial injection of E, coli Ek132. Antibacterial peptides were purified from the immunized haemolymph by heat treatment, ion-exchange chromatography, gel filtration chromatography, and reverse phase FPLC, and their physicochemical characteristics were investigated. These purified antibacterial peptides designated as spodopsin la and Ib were named after Spodoptera litura. Spodopsin la and Ib had the apparent molecular masses of 3, 823 Da and 3, 886 Da, respectively, and about 20% of the sequences had basic amino acids, such as lysine and arginine but no cysteine. Also, spodopsin l was confirmed to be a new member of cecropin family having a similar amino acid sequence to cecropin of lepidopteran insects, such as Bombyx mori and Hyalophora cecropia. The purified spodopsin was active against gram-positive as well as gram-negative bacteria.

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Effects of olfactory self- and cross-adaptation on perceiving odor in a moth

  • Qian, Kai;Chen, Haibin;Wan, Xinlong
    • International Journal of Industrial Entomology and Biomaterials
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    • 제32권2호
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    • pp.60-68
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    • 2016
  • Pheromone orientation in moths is an exemplar of olfactory sensitivity. To avoid cross mating, the responses of males to pheromone blends must be high specificity and temporal resolution. We tested the effects of olfactory self- and cross-adaptation of pheromone compounds and mixtures in Spodoptera litura moths by electroantennogram (EAG) recordings. The challenge of S. litura antennae to a pulse train of its own pheromone blends of Z9,E11-14:OAc and Z9,E12-14:OAc with 200 ms on/off and 1 s on/off indicated that the repetitive stimulation by 200 ms on/off with high dosages resulted in greater adaptation than that by 1 s on/off with low dosages and the adaptation index of Z9,E11-14:OAc in all treatments is significantly larger than that of Z9,E12-14:OAc, suggesting that high dosages with more frequent stimulation prefer to induce sensory adaptations and a different odor coding exist between the two components in the antennal periphery in this moth. The cross-adaptation EAG test among the two pheromone compounds and Z7-12:OAc and Z9-14:OH from congeneric species of S. litura showed that each of these compounds adapted the antenna more to that specific compound. The significantly higher adaptation to Z7-12:OAc and Z9-14:OH than to the pheromone components of S. litura induced by themselves suggested that both of them are coded by specific odor receptor neurons which are different from those tuned to the pheromone components of S. litura . Thus, we proposed that Z7-12:OAc and Z9-14:OH may play an important role in avoidance of heterospecific mating between S. litura and its sympatric moth species.

Correctum : Effects of olfactory self- and cross-adaptation on perceiving odor in a moth

  • Qian, Kai;Chen, Haibin;Wan, Xinlong
    • International Journal of Industrial Entomology and Biomaterials
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    • 제33권2호
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    • pp.149-149
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    • 2016
  • Pheromone orientation in moths is an exemplar of olfactory sensitivity. To avoid cross mating, the responses of males to pheromone blends must be high specificity and temporal resolution. We tested the effects of olfactory self-and cross-adaptation of pheromone compounds and mixtures in Spodoptera litura moths by electroantennogram (EAG) recordings. The challenge of S. litura antennae to a pulse train of its own pheromone blends of Z9,E11-14:OAc and Z9,E12-14:OAc with 200 ms on/off and 1 s on/off indicated that the repetitive stimulation by 200 ms on/off with high dosages resulted in greater adaptation than that by 1 s on/off with low dosages and the adaptation index of Z9,E11-14:OAc in all treatments is significantly larger than that of Z9,E12-14:OAc, suggesting that high dosages with more frequent stimulation prefer to induce sensory adaptations and a different odor coding exist between the two components in the antennal periphery in this moth. The cross-adaptation EAG test among the two pheromone compounds and Z7-12:OAc and Z9-14:OH from congeneric species of S. litura showed that each of these compounds adapted the antenna more to that specific compound. The significantly higher adaptation to Z7-12:OAc and Z9-14:OH than to the pheromone components of S. litura induced by themselves suggested that both of them are coded by specific odor receptor neurons which are different from those tuned to the pheromone components of S. litura. Thus, we proposed that Z7-12:OAc and Z9-14:OH may play an important role in avoidance of heterospecific mating between S. litura and its sympatric moth species.

담배거세미나방(Spodoptera litura) 성충의 예찰을 위한 최적 성유인제 조성 (Optimal Composition of Sex Attractant for Monitoring Adults of Spodoptera litura (Lepidoptera: Noctuidae) in Korea)

  • 정충렬;부경생;배순도;한경식
    • 한국응용곤충학회지
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    • 제61권1호
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    • pp.77-83
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    • 2022
  • 본 연구는 담배거세미나방 국내 개체군의 예찰에 필요한 성유인제의 최적 조성을 찾기 위해 수행하였다. 담배거세미나방 암컷 성충에서 알려진 두 성페로몬 성분인 (Z,E)-9,11-tetradecadienyl acetate, (Z,E)-9,12-tetradecadienyl acetate를 5.5 ~ 10.0 및 9:1 ~ 99.1, 9:1 ~ 39:1 비율 사이에 여러 조성으로 만들어 고무격막 방출제에 담아 펀넬트랩을 이용하여 콩과 땅콩포장에서 수컷 성충에 대한 유인력을 비교한 결과, 두 성분의 19:1 비율이 가장 적절한 유인 조성으로 결정하였다. 그러나 Z9E11-14:Ac 단독 성분 미끼에는 수컷 성충이 거의 유인되지 않았다. 이 결과는 담배거세미나방 성충 예찰용의 성유인제 구성에는 두 성페로몬 화합물이 반드시 필요한 성분임을 나타낸다. 미끼에 담긴 성페로몬은 0.1 ~10 mg 사이에서 함량이 증가할수록 유인된 수가 많았다. 적절한 트랩 설치 높이는 1.5 m로 결정하였다.

Test of Larvicidal Effect of Some Commercial Natural Products on Lepidoptran Plutella xylostella and Spodoptera litura Larvae

  • Jeong, Hyung-Uk;Im, Hyun-Hwak;Chang, Sung-Kwon;Paik, Chae-Hoon;Han, Tae-Ho;Kim, In-Seon;Kim, Ik-Soo
    • International Journal of Industrial Entomology and Biomaterials
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    • 제15권1호
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    • pp.87-91
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    • 2007
  • A diverse kind of environment-friendly agricultural materials(EFAM) for the control of insect pests is on the market. These EFAMs are a part of essential sources for the accomplishment of successful, sustainable, and environment-friendly agriculture. Thus, accurate information of these EFAMs is one that required for the success of environment-friendly agriculture, but, in reality, still appropriate information is absolutely in shortage. In this study, we, therefore, tested the efficacy of commercial EFAMs against two lepidopteran insect larvae, the diamondback moth Plutella xylostella(Lepidoptera: plutellidae) and the tobacco cutworm Spodoptera litura(Lepidoptera: Noctuidae). After the two insect pests were successfully stabilized in indoor environment the larvicidal activity was tested at $24{\pm}1^{\circ}C$, relative humidity(RH) of $60{\pm}5%$, and a photoperiod of 16L:8D, and mortality was determined 48 hrs after EFAMs are treated. The EFAMs that showed more than 90% of larvicidal activity were each six among 16 against both P. xylostella and S. litura and only three of them showed consistent larvicidal activity against both species, signifying species specificity of EFAMs and importance of selection of proper EFAMs depending on target insect pest.

배추좀나방과 담배거세미나방 유충에 대한 한방식물체 추출물의 살충 및 섭식저해활성 (Larvicidal and Antifeeding Activities of Oriental Medicinal Plant Extracts against Plutella xylostella and Spodoptera litura)

  • 권형욱;안용준;권정현;이상길;변병호
    • Applied Biological Chemistry
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    • 제37권6호
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    • pp.503-508
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    • 1994
  • 17종과 45종 한방 식물체 메탄올 추출물의 배추좀나방과 담배거세미나방 유충에 대한 살충활성 및 섭식저해활성을 잎침지법으로 조사하였다. 살충활성은 8,000 ppm에서 조사하였는바, 현호색 추출물만이 담배거세미나방 유충에 대해 강한 살충활성을 보였다. 섭식저해활성은 5,000 ppm에서 조사한 결과, 누리장나무, 거문누리장나무, 목향, 우방자, 인진, 전호, 백지 및 현호색 추출물이 강한 섭식저해활성을 나타내었다.

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곤충 핵다각체병바이러스를 이용한 담배거세미나방의 생물적 방제. III. 담배거세미나방 핵다각체병바이러스 살충제 살포효과 (Microbial Control of the Tobacco Cutworm, Spodoptera litura (Fab.), Using S. litura Nuclear Polyhedrosis Virus. III. Field Evaluation of the Viral Insecticides)

  • 임대준;진병래;최귀문;강석권
    • 한국응용곤충학회지
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    • 제29권4호
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    • pp.252-256
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    • 1990
  • 담배거세미나방 핵다각체병바이러스를 white carbon 제제, molasses 제제 및 White carbon-molasses 혼합제등 3종의 바이러스살충제로 만들어 제제의 살포방법, 살포효과 및 잔류효과를 폿트 및 콩포장에서 살충효과를 비교하였다. 바이러스 살충채 살포는 콩잎 표면 살포시 약 5일, 이변 살포시 약 12일까지 60% 이상의 살충효과가 지속되었다. 폿트식재 콩잎을 이용한 바이러스살충제의 살포효과는 molasses 제제와 with carbon 제제에서 모두 97% 이상의 살충효과가 있었으나 molasses성분을 포함한 제제는 햇빛에 의해 일부 콩잎에 약해를 보였다. 바이러스살충제 살포 1 시간 후 빗물 처리에 의한 영향은 빗물 무처리와 큰 차이가 없이 90% 이상의 살충효과가 있었다. 야외 콩 포장에서 바이러스살충제의 살포효과는 3종의 제제 모두 90%이상의 살충율이었 며, 유기합성농약보다 7일 늦게 효과가 나타난 반면 2주 이상 효과가 지속되었다.

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수종 나비목 해다각체병 바이러스의 다각체 단백질 특성과 그에 대한 Alkaline Proteaes의 영향 (Influence of Alkaline Protease on Polyhedral Proteins of Nuclear Polyhedrosis Viruses Isolated from Three Lepidopterous Insects)

  • 박범석;김현욱;진병래;임대중;김석권
    • 한국응용곤충학회지
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    • 제27권4호
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    • pp.211-218
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    • 1988
  • 담배거세미나방(Spodoptera litura: SI), 누에(Bombyx mori: Bm) 및 흰불나방(Hyphantria cunea : Hc)으로부터 분리된 핵다각체병 바이러스(nuclear polyhedrosis virus : NPV)의 다각체의 단백질의 특성과 그에 대한 alkaline protease의 영향을 SDS-PAGE 및 혈정학적 방법으로 분석했다. Alkaline protease를 부활화시킨 후 다가체 단백질을 SDS-PAGE한 결과, BmNPV의 경우 30kD, SINPV와 HcNPV는 31kD의 단일 major band 및 이것들의 종합체(polymer)인 57kD와 66kD의 minor band들이 관찰되었다. Alkaline protease의 부활화를 성략한 SI NPV 다각체를 알칼리 용액으로 시간 차이를 두고 처리한 후 SDS-PAGE한 결고, 알칼리 처리시간이 경과함에 따라서 alkaline protease활성에 의해 다각체 단백질이 일정한 pattern으로 저분자화됨이 뚜렷하였다. SINPV 와 BmNPV 다각체 단백질의 항체를 제조하여 SINPV, BmNPV및 HcNPV 다각체 단백질간의 혈정학적 상동성을 이중형역광산법과 Western blot으로 비교한 결과는 3종 모두에서 공통 antigenic determinants의 존재가 인정되었으며 major 다각체 단백질의 종합체 형성과 alkaline protease에 의한 분해를 확인했다.

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