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NTIS 바로가기한국응용곤충학회지 = Korean journal of applied entomology, v.58 no.2, 2019년, pp.101 - 109
김효일 (안동대학교 생명과학대학 식물의학과) , 김용균 (안동대학교 생명과학대학 식물의학과)
An entomopathogenic bacterium, Xenorhabdus ehlersii KSY, is symbiotic to a nematode, Steinernema longicaudum, and exhibits high entomopathogenic virulence against lepidopteran insects. This study showed that the bacterial pathogenicity is induced by its inhibitory activity against eicosanoid biosynt...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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Xenorhabdus ehlersii KSY 세균의 병원력은 어떤 문제를 야기하는가? | 곤충병원선충인 Steinernema longicaudum에 공생하는 Xenorhabdus ehlersii KSY 세균은 나방류에 대한 높은 병원력을 발휘한다. 본 연구에서 이 세균의 병원력이 아이코사노이드 생합성을 억제하여 기주 곤충의 면역 저하를 유발한다는 것을 확인하였다. 그러나 이 세균의 병원력은 혈강 주입에 의해 야기된다. | |
아이코사노이드란 무엇인가? | 아이코사노이드는 탄소수 20개의 불포화지방산인 아라키 도닉산(arachidonic acid, AA)이 산화되어 형성된 물질류의 총칭이다(Corey, 1980). 즉, 인지질을 기질로 sn-2 위치에 붙은 지방산을 가수분해하는 효소인 phospholipase A 2 (PLA 2 )의 작용 으로 AA가 유리되면 cyclooxygenase의 작용으로 프로스타글 란딘(prostaglandin)류의 아이코사노이드가 만들어지거나 또는 lipoxygenase의 산화작용으로 류코트리엔(leukotriene)류의 아이코사노이드를 형성하게 된다(Stanley, 2000). | |
Steinernema에 속한 선충의 특징은? | bacterio.net/xenorhabdus) 이들이 공생하는 Steinernema 속한 선충은 100종 이상이 알려져 있어 하나의 세균 종은 한 종 이상의 선충을 숙주로 가질 수 있다(Yooyangket et al., 2018). |
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