Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Occurrence of Plant-parasitic Nematodes in Major Potato Production Areas and PCR Identification of Root-knot Nematodes

감자 주산지 식물기생선충 분포와 뿌리혹선층의 PCR 동정

  • Published : 2006.04.01
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Abstract

This study was conducted to get basic information on the occurrence of plant-parasitic nematodes for the establishment of nematode management strategy in major potato production areas in Korea. Nationwide soil collection was done in 11 areas of Cheju, Yesan, Gimchun, Goryoung, Hong chun, Pyungchang, Gimjae, Milyang, Namwon, Gangnung, and Inje in 2004-2005. Root-hot nematode juveniles(J2) were detected in 30 samples among the 50 samples. The average density was 12-69 J2/100cc soil. Pratylenchus sp., Helicotylenchus sp., Ditylenchus sp., Tylenchus sp., and Tylenchorhynchus sp. were also detected in various locations, however, their densities were very low. Root-knot nematode females were collected from tomato roots inoculated with the potato field soils for PCR-RFLP identification. The females from Cheju, Milyang, and Goryung showed PCR products of 500 bp. And the Dra I restriction enzyme digestions showing 290 bp and 230 bp fragments confirmed their identity as Meloidogyne hapla.

국내 주요감자재배지의 식물기생선충 발생상을 밝히기 위해 2004년과 2005년에 제주, 예산, 김천, 고령, 홍천, 평창, 김제, 밀양, 남원, 강릉, 인제 등 11개 감자 주산지를 대상으로 선충속별 종류와 밀도를 조사하였다. 채집한 토양시료 50개 중 30개에서 뿌리혹선충 유충이 검출되었으며 밀도는 12-69마리/토양 100cc 정도로 비교적 낮았다. 식물기생선충류 중 Pratylenchus sp., Helicotylenchus sp, Ditylenchus sp., Tylenchus sp., and Tylenchorhynchus sp.가 지역별로 검출되었으나 대부분 밀도는 매우 낮게 나타났다. 채집한 토양을 토마토 뿌리에 접종 후 뿌리혹선충을 배양하여 PCR-RLFP에 의한 정밀동정 결과 제주, 밀양, 고령에서 채집한 뿌리혹선충 암컷에서 500 bp의 PCR 산물을 얻었으며 제한 효소 Dra I을 처리한 결과 290 및 230 bp의 밴드가 형성되어 당근뿌리혹선충(Meloidogyne hapla)으로 동정하였다.

Keywords

References

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