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A Pathotype of Pepper mild mottle virus Causing Necrotic Spot Symptoms in Paprika Fruit

파프리카 과실에 괴사반점을 일으키는 Pepper mild mottle virus의 병원형

  • Choi, Gug-Seoun (Horticulture and Herbal Environmental Division, National Institute of Horticultural and Herbal Science, Rural Development Administration) ;
  • Choi, Sung-Kook (Horticulture and Herbal Environmental Division, National Institute of Horticultural and Herbal Science, Rural Development Administration) ;
  • Cho, Jeom-Deog (Horticulture and Herbal Environmental Division, National Institute of Horticultural and Herbal Science, Rural Development Administration) ;
  • Cho, In-Sook (Horticulture and Herbal Environmental Division, National Institute of Horticultural and Herbal Science, Rural Development Administration)
  • 최국선 (국립원예특작과학원 원예특작환경과) ;
  • 최승국 (국립원예특작과학원 원예특작환경과) ;
  • 조점덕 (국립원예특작과학원 원예특작환경과) ;
  • 조인숙 (국립원예특작과학원 원예특작환경과)
  • Received : 2013.02.19
  • Accepted : 2013.06.09
  • Published : 2013.06.30

Abstract

Black necrotic spots were observed from the fruits of paprika that were cultivating in a vinylhouse. The casual agents of the symptom were identified as several isolates of Pepper mild mottle virus (PMMoV) by responses of indicator plants, electron microscopy, and RT-PCR analysis. Symptoms of the viral disease were mild mottle in the young leaves, necrotic spots on the fruits and the fruit apex of paprika, but the symptoms were not shown on the mature leaves. All of the PMMoV isolates were determined as $P_{1.2.3}$ pathotypes from the biological responses on the chilli pepper lines used for discrimination of tobamovirus pathotypes. Pathogenicity of the PMMoV isolates was also confirmed using mechanical inoculation method to paprika seedlings. The coat protein (CP) genes of the PMMoV isolates were compared at the nucleotide and amino acid levels with the previously published PMMoV isolate. The isolates share 96 to 99% CP nucleotide identity among the isolates. The CP of $P_{1.2}$-pathotype PMMoV-P2 presented Met at position 139, But the CPs of $P_{1.2.3}$-pathotype PMMoVs from paprika showed Met to Asn substitution at the same position. This is the first report of identification of $P_{1.2.3}$-pathotype PMMoV isolates from paprika in Korea.

시설재배단지에서 파프리카의 열매에 검은 괴저 반점 증상이 발생하였다. 이 증상주를 전자현미경, 지표식물 검정 및 RT-PCR 분석 결과, 원인 바이러스로 PMMoV로 동정되었다. 신엽에서 병징은 약한 모틀 증상, 과경과 과일에 검은 반점이 보였지만, 성숙한 잎에서는 증상이 나타나지 않았다. PMMoV의 분리주들에 대한 Tobamovirus pathotype(P)의 판별 고추계통에 접종한 결과, 모두 $P_{1.2.3}$으로 확인되었다. 분리한 PMMoV를 건전 파프리카 유묘에 기계적 접종을 통하여 이 바이러스의 병원성을 증명하였다. PMMoV 분리주들의 외피단백질 유전자의 상동성은 96-99%였다. $P_{1.2}$인 PMMoV-P2 분리주의 외피단백질 아미노산 배열 139번째가 Met인 반면, 파프리카 분리주 모두 이 위치가 Asn으로 확인되었다. 본 논문은 파프리카에서 PMMoV pathotype $P_{1.2.3}$의 동정에 관한 우리나라 최초 보고이다.

Keywords

References

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Cited by

  1. Resistance Screening to Pepper mild mottle virus Pathotypes in Paprika Cultivars vol.20, pp.4, 2014, https://doi.org/10.5423/RPD.2014.20.4.299
  2. Complete Nucleotide Sequences and Genome Organization of Two Pepper Mild Mottle Virus Isolates fromCapsicum annuumin South Korea vol.4, pp.3, 2016, https://doi.org/10.1128/genomeA.00411-16