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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.17, no.3, 1999³â, pp.321-330
Åä¾ç°ú °ïÃæ »çü·ÎºÎÅÍ °ïÃæº´¿ø¼º ¼±ÃæÀÇ ºÐ¸® ¹× µ¿Á¤
( Isolation and Identifieation of Entomopathogenic Nematodes from Soil and Insect )
ÇÑ»ó¹Ì;ÇÑ¸í¼¼; °æºÏ´ëÇб³ ³ó°ú´ëÇÐ °ïÃæº´¸®¿¬±¸½Ç;°æºÏ´ëÇб³ ³ó°ú´ëÇÐ °ïÃæº´¸®¿¬±¸½Ç;
 
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¿ì¸®³ª¶óÀÇ ´Ù¾çÇÑ Áö¿ª¿¡¼­ 100°³ÀÇ Åä¾ç°ú °ïÃæ»çü¿¡¼­ ´©¿¡ trapÀ» ÀÌ¿ëÇÏ¿© °ïÃæº´¿ø¼º ¼±ÃæÀ» ºÐ¸®ÇÏ¿´À¸¸ç, À§»ýÇØÃæÀÎ ÅаËÁ¤ÆÄ¸®À¯Ãæ(Calliphora vomitoria)°ú ³ó¾÷ÇØÃæÀÎ ¸ê°­³ª¹æÀ¯Ãæ(Pseufaletia separata), ºÏ¹æÇ®³ë¸°Àç (Palomena angulosa) ±×¸®°í ¿Õdzµ­ÀÌÀ¯Ãæ(Melolontha incana) ¿¡ ´ëÇÏ¿© 20¡­80%ÀÇ »ìÃæ·ÂÀ» ³ªÅ¸³»¸ç, ´©¿¡(Bombyx mori mori)À¯Ãæ°ú ¹øµ¥±â¿¡ ´ëÇÑ »ìÃæ·ÂÀº 100%ÀÎ ¼±Ãæ 30°èÅëÀ» ¼±¹ßÇÏ¿´´Ù. ¼±¹ßÇÑ ¼±Ãæ 30°èÅëÀº ÇüÅÂÀû Ư¡¿¡ µû¶ó Rhabditidae, Heteror-habditidae, Diplogasteridae, Steinernematidae, TylenchidaeÀÇ 5°³ ºÐ·ù±ºÀ¸·Î ³ª´µ¾îÁ³´Ù. ¼±ÃæÀÇ µ¿Á¤¹ý °³¼± ¹× ºÐÀÚ»ý¹°ÇÐÀû ºÐ·ù±âÁØÀÇ °ËÅ並 À§ÇÏ¿© random primer 130°³ Áß¿¡¼­ 20°³ÀÇ primer¸¦ ¼±¹ßÇϰí, genomic DNAÀÇ RAPD-RCRÀ» ¼öÇàÇÑ °á°ú À¯»çµµ 0.853¿¡¼­ ÇüÅÂÀû ºÐ·ù±âÁذú ÀÏÄ¡ÇÏ¿´´Ù. À¯»çµµ°è¼ö¸¦ ÀÌ¿ëÇÑ 5°³ ºÐ·ù±º¿¡ ¼ÓÇÏ´Â ¼±Ãæ °èÅë°£ÀÇ À¯ÀüÀû ±Ù¿¬°ü°è´Â Rhabditida¿¡¼­ Steiner-nematidae´Â °æ¿ì µ¿ÀÏ ¸ñÀÇ Heterorhabditidae¹× Rhabditidae¿Í´Â À¯»çµµ 0.819·Î¼­ °Å¸®°¡ ¸Ö°í, ´Ù¸¥ ¸ñÀÎ Tylenchidae¿Í´Â 0.827·Î¼­ º¸´Ù ´õ ±Ù¿¬À̾ú´Ù. ¶ÇÇÑ RhabditidaeºÐ·ù±ºÀº À¯»çµµ 0.863¿¡¼­ ´Ù½Ã 2°³ÀÇ ºÐ·ù±ºÀ¸·Î ³ª´©¾îÁ³À¸³ª ÇüÅÂÀû Â÷ÀÌ´Â ¸íÈ®ÇÏÁö ¾Ê¾Ò´Ù. ÇüÅÂÀû ºÐ·ù¸¦ ÂüÁ¶ÇÑ genomic DNAÀÇ RAPD°á°ú À¯»çµµÀÇ ÀûÀýÇÑ ÀÀ¿ëÀº »ý¹°Àû ¹æÁ¦¸¦ À§ÇÑ °ïÃæº´¿ø¼º ¼±ÃæÀÇ ¼±¹ß ¹× µ¿Á¤¿¡ À־ ÇüÅÂÀû ´Ü¼ø¼º¿¡ ±âÀÎÇÏ´Â ÀÚ¿¬ºÐ·ùÀÇ ÇѰ踦 º¸¿Ï ¶Ç´Â ±Øº¹ÇÒ ¼ö ÀÖ´Â ºÐÀÚ»ý¹°ÇÐÀû µ¿Á¤¹ýÀ¸·Î¼­ À¯¿ëÇÒ °ÍÀÌ´Ù. ¶ÇÇÑ RAPD¿¡ ÀÇÇÑ µ¿Á¤Àº »ýÅÂȯ°æ¿¡¼­ ´Ù¼öÀÇ °³Ã¼¸¦ È®º¸Çϱ⠽¬¿î dauer larvae ¶Ç´Â infective juvenile µî À¯Ãæ±âÀÇ ¼±ÃæÀ» ÀÌ¿ëÇÒ ¼ö ÀÖ´Ù. ±×·¯¹Ç·Î ³ë·ÂÀÌ ¼Ò¿äµÇ´Â ¼ºÃæÀÇ Ã¤Áý°ú Ç¥º»Á¦ÀÛ µîÀÌ »ý·«µÇ¹Ç·Î ¼±ÃæÀÇ µ¿Á¤¿¡ ¸Å¿ì ¾ÈÁ¤ÀûÀ̸ç È¿À²ÀûÀÎ ¹æ¹ýÀ¸·Î ÆÇ´ÜµÇ¾ú´Ù.
Nematodes were isolated using silkwom trap through the investigation of 100 soil samples from various biotopes in Korea. The 30 nematode strains from soil and dead insects by the pathogenicity aganinst silkworms (Bombyx mori mori) and insect pests of Calliphora vomitoria, Pseufazetia separata, Palomena angulosa, and Melolontha incana. Mortailty of the silkworm larvae and pupae were as high as 100% by nematode infection, those of insect of pests were varied from 20 to 100%. The 30 strains of entemopathogenic nematodes were classified into five groups of Rhabditidae, Diplogatroidae, Heterorhabitidae, Steinernematidae, and Tylenchida by morphological criteria. The genetic relationships among the 30 nematode strains were analyzed by various RAPD bands with twenty primers. The 30 nematode strains were classified into six major subgroups on the basis of the genetic similarity coefficient of 0.853. The grouping by RAPD was agree with those of morphological taxa in discrimination of the higher group, however, was not completely agree in the subgroup. The family Steinernematidae belong to Rhabditida was clarified as closer to the Tylenchida, rather than the other Rhabditida of Heterorhabitidae, Rhabditidae, and Diplogatroidae in genetic distance valule. From the result of the morphological classification and RAPD of the genomic DNA showed that genetic relationship analysis furnish infurmation on phylogenetic classification and relationships of entomopathogenic nematodes. The application of genetic similarity will overcome the limitation of taxonomy and classification of morphologically simple nematode. Several primers were confirmed those utility of identification for individual nematode strains, the methods of molecular genetics secured the simplicity, rapidity and accuracy on the selection of entomopathogenic nematodes.
 
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Nematode;Entomopathogenic;Biological control;RAPD;
 
ȯ°æ»ý¹° / v.17, no.3, 1999³â, pp.321-330
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911921494859)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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