The Effect of Pathogenicity on Trehalose Concentration in Entomopathogenic Nematodes

The effect of pathogenicity on trehalose accumulation was studied using six species of entomopathogenic nematodes adapted to either cold or warm temperature conditions. Also, trehalose accumulation was studied by treating nematodes with glycerol or oil at trehalose concentration and mortality of cold temperature $condition(5^{\circ}C)$, S. longicaudum Gl was increased 50% than control. And at trehalose concent and mortality of warm temperature $condition(30^{\circ}C)$, S. glaseri Agr B3 was increased 45%. Intracellular trehalose accumulation was increased with treatment with 20% glycerol or oil. As the final results, the pathogenic duration of nematodes was increased as intracellular trehalose accumulation was increased

본 실험에서는 분리된 곤충병원성 선충 6종의 온도에 따른 trehalose의 농도와 병원성의 상관관계를 조사하였으며 온도 적응, oil, glycerol을 이용하여 trehaolse 생성량 조절에 대하여 조사하였다. 저온에서는 S. longicaudum G1 종이 $81.92{\mu}g/mg$로 가장 높게 나타났으며, 고온에서는 S. glaseri Agr B3 $71.22{\mu}g/mg$로 가장 높게 나타났다. 또한 S. longicaudum G1을 저온에서 적응 시켰을 경우 병원성과 trehaolserk 향상되었으며 S. glaseri Agr B3 종일 경우 고온에 적응 시켰을 경우 역시 향상되었다. glycerol 20%과 oil 전 농도에서 처리하였을 경우 도 종 모두 다소 향상되는 것으로 나타났다.