• 제목/요약/키워드: Plant parasitic nematodes

검색결과 71건 처리시간 0.027초

더덕(Codonopsis lanceolata) 재배지 기생선충의 발생상황 (Studies on Plant Parasitic Nematodes in the Fields of Codonopsis lanceolata)

  • 정도철;한상찬
    • 한국자원식물학회지
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    • 제16권3호
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    • pp.200-206
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    • 2003
  • 더덕 (Codonopsis lanceolata) 재배지에서 발생 빈도와 서식 밀도가 높은 식물기생선충을 파악하기 위하여 3개도 34개 지역 더덕 포장에서 조사한 결과 검출된 식물기생선충은 Meloidogyne(뿌리 혹선충), Pratylenchus(뿌리썩이선충)등 10개 속(genus)이었는데, 그 중 뿌리혹선충은 97%의 포장에서 검출되었고, 검출된 평균 선충수도 1,700마리/토양 300$m\ell$ 이상으로 대단히 높았다. 또 논 토양보다는 밭 토양에서 검출율이 높았고, 평균 밀도도 2,450마리로 10배정도 많았다.

경북지역 복숭아과원에 분포하는 식물기생성 선충의 조사 (Survey on Plant-Parasitic Nematodes in Peach Orchards in Gyeongbuk Province)

  • 권태영;김동근;최충돈;윤재탁
    • 한국응용곤충학회지
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    • 제43권1호
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    • pp.81-84
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    • 2004
  • 복숭아의 주요 식물기생성선충 종류를 밝히기 위하여 2000년부터 2002년까지 3년간 경북지역의 124개 복숭아 과원 토양으로부터 선충을 분리하고 선충의 종류, 밀도, 빈도(Frequency), 우점도(Simpson's index), 다양성지수(Shannon and Wiener index), 중요도(Prominence value)를 분석하였다. 식물기생성 선충은 총 124지점 중 97지점에서 발견되었으며 우점도는 0.717-0.881, 다양성지수는 0.221-0.286로 복숭아는 다양한 종류의 식물기생성선충에 의하여 피해를 받기보다는 몇몇 우점하고 있는 식물기생성선충에 의하여 피해를 받고 있었다 복숭아과원에서 중요한 식물기생성선충은 Tylenchorhynchus nudus, Criconemoides informis, Paratylenchus elachistus, Pratylenchus vulnus, Helicotylenchus digonichus 순이었고, 그 외 Aphelenchus sp., Tylenchus sp., Heterodera sp., Scutellonema sp. 등이 검출은 되었으나 중요종은 아니었다. 이번 조사에서 특히 국내 복숭아과원 토양에는 Paratylenchus elachistus가 널리 분포하고 있었으며, 반면 외국에서 심각한 문제가 되고 있는 뿌리혹선충류는 발견되지 많았다.

충남지역 두류작물 재배지 식물기생선충 감염현황 (Incidence of Plant-parasitic Nematodes from Legume Fields in Chungnam Province)

  • 고형래;박은형;김은화;이재국
    • 한국유기농업학회지
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    • 제27권4호
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    • pp.501-512
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    • 2019
  • To survey the incidence of plant-parasitic nematodes, 187 soil samples from leguminous plant fields in Chungnam province, Korea were assessed from June to August 2018. As the result, four nematode genera - the cyst nematode (Heterodera spp.), root-knot nematode (Meloidogyne spp.), root-lesion nematode (Pratylenchus spp.), spiral nematode (Helicotylenchus spp.) - were detected. Among them, the incidence of cyst nematode was the highest in Taean (73%) and lowest in Hongseong (10%). The cyst nematode was detected from the adzuki and kidney bean fields as well as soybean fields. The incidence of cyst nematode in upland fields was higher than in paddy fields. In addition, the extracted cyst nematodes consisted of two species, which was identified as Heterodera glycines and H. sojae. The incidence of H. glycines (22%) was higher than H. sojae (10%), and a few of the fields (5%) was mixed with two cyst nematodes. This result suggested that we should consider that the cyst nematode is the major plantparasitic nematode when controlling the nematodes in soybean fields in Chungnam province.

하우스시설 재배지에서 발생하는 주요 선충 (The major plant-parasitic nematodes in plastic vinyl house field)

  • 김세희;박상은;고나연;류태희;신효섭;권혜리;서미자;유용만;윤영남
    • 농업과학연구
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    • 제40권2호
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    • pp.101-106
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    • 2013
  • To know how much damages occurred by nematodes in plastic vinyl house field, soil samples were collected from strawberry cultivation areas at Buyeo and Nonsan in Chungnam and Jinju in Kyeongnam, melon cultivation area at Gocksung in Junnam and cucumber field at Gongju in Chungnam. And then, nematode samples were separated from each soil sample, and identified the kind of plant-parasitic nematodes. Plant-parasitic nematodes were separated from 52 soil samples. Among samples, Meloidogyne spp., Pratylenchus spp. and Helicotylenchus spp. were isolated from 45 (86.5%%) and 33 (63.5%) and 47 collected soil samples (90.4%), respectively. As a result of identification of plant-parasitic nematodes from regional collected soil samples, distribution of Helicotylenchus spp. was higher than any other plant-parasitic nematode. And the population of Meloidogyne spp. and Pratylenchu spp. were also higher, and a occurrence ratio of Meloidogyne spp. is higher than Pratylenchu spp. except the cucumber growing area at Gongju.

The Quest for Plant Nematode Biological Control-Facts and Hypotheses

  • Zuckerman, Bert M.;Esnard, Joseph
    • 한국식물병리학회:학술대회논문집
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    • 한국식물병리학회 1994년도 Proceedings of International Symposium on BIOLOGICAL CONTROL OF PLANT DISEASES Korean Society of Plant Pathology
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    • pp.62-74
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    • 1994
  • The current status of the development of commercial products for the biological control of plant-parasitic nematodes is discussed. an example is given of problems encountered by our program in patenting biocontrol agents in the United Stats. Two hypothetical approaches to the control of plant nematodes are considered. First recent experimental results relating to the theory on intervention with host-finding by plant nematodes are reviewed. Second, a newer hypothesis considering the possibilities for genetic approaches to modifying molecular signals between nematodes and their parasites is described.

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한국 미기록 4종의 식물기생선충에 관하여 (Four Unrecorded Plant Parasitic Nematodes from Korea (Tylenchida: Nematoda))

  • 최영연
    • 한국응용곤충학회지
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    • 제23권2호
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    • pp.119-125
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    • 1984
  • 식물기생성 선충을 조사중 Tylenchida 목에 속하는 Aphelenchoides parasaprophilus, Paraphelenchus myceliophthorus, Helicotylenchus belli, Quinisulcius capitatus 등 4종의 우리나라 미기록종을 발견하고 형태적 특성을 기술하였다. 이중에 Paraphelenchus 속과 Quinisulcius 속은 우리나라 미기록속이다. 따라서 현재까지 식물기생 선충은 2목 18과 44속 102종이 발견되였다.

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활엽수 분재의 선충 조사 (Survey of Nematodes in Decideous Bonsai)

  • 최진영;정영학;이동운;추호렬;박정규
    • 한국응용곤충학회지
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    • 제57권4호
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    • pp.303-315
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    • 2018
  • 분재는 우리나라의 주요 수출 임산물이다. 외국으로의 분재수출 요구도는 증가하고 있지만 수출을 위해서는 검역적 위해 요소가 제거 되어야 하는데 식물기생선충도 검역의 중요 대상이다. 우리나라 6개 분재원에서 활엽수 분재[단풍나무(Acer palmatum), 백일홍(Zinnia elegans), 쥐똥나무(Ligustrum obtusiflium), 소사나무(Carpinus turcaninowii), 애기사과(Malus sieboldii)]를 대상으로 발생하는 선충을 조사하였다. 세 종의 식물기생선충[미국검선충(Xiphinema americanum), 둥근꼬리붙이나선선충(Rotylenchus blothrotylus), 한국껍질선충(Hemicycliophora koreana)]과 세 종의 비기생 선충 [등화육각창선충(Aporclaimellus donghwaens), 둥근꼬리붙이나선선충(Egtitus andhricus), 계룡중간창선충(Mesodorylaimus usitatus)]들이 분재로부터 분리되었다. 비기생선충인 계룡중간창선충은 모든 조사 수종에서 검출되었고, 미국 과 EU연합 검역대상 선충으로는 한국껍질선충과 미국검선충의 두 종만 발견되었다. 등화육각창선충과 계룡중간창선충은 분재목 뿌리에서 분리되었고, 나머지 선충들은 토양에서 분리되었다.

Citrus 속 과수재배지의 식물기생선충 조사 (Survey of Plant Parasitic Nematode in Citrus Fruit Orchards in Korea)

  • 박선남;윤영남;이재국;박병용
    • 한국응용곤충학회지
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    • 제48권4호
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    • pp.535-539
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    • 2009
  • 이 연구는 Citrus속 과수재배지에서 식물기생선충의 종류와 분포를 조사하기 위해 수행하였다. 토양 샘플은 주요 재배지에서 2008년 4월부터 8월에 채집하였다. 식물기생선충은 전체 178개 샘플 가운데 139개 샘플에서 검출되었다. 감귤재배지에서 Tylenchulus semipenetrans가 178토양샘플 중 139 샘플에서 검출되었고(90.4%), 유자재배지는 94 토양샘플 중 85토양 샘플에서 T. semipenetrans가 검출되었다(71.4%). 그러나 주요한 식물기생선충의 종류는 다소 차이가 있었다. 국내 Citrus속 과수 재배지에는 T. semipenetrans가 널리 분포하고 있었으며, 감귤과수에 가장 중요한 식물기생선충임을 확인하였다. 재배 년수가 증가할수록 T. semipenetrans의 검출빈도가 증가하였다. 또 토양산도가 알칼리성으로 갈수록 감귤선충의 밀도는 증가하였으나, 상관계수는 높지 않았다.

Effects of Arugula Vermicompost on the Root-Knot Nematode (Meloidogyne javanica) and the Promotion of Resistance Genes in Tomato Plants

  • Rostami, Mahsa;Karegar, Akbar;Ghorbani, Abozar
    • The Plant Pathology Journal
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    • 제38권4호
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    • pp.261-271
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    • 2022
  • Root-knot nematodes are the most important plant-parasitic nematodes worldwide. Many efforts have been made to find non-chemical, risk-free, and environmentally friendly methods for nematode control. In this study, the effects of compost and vermicompost of arugula (Eruca sativa) on Meloidogyne javanica were investigated in three glasshouse experiments. In addition, the expression of the defense-related genes nonexpressor of pathogenesis-related 1 (NPR1) and lipoxygenase 1 (LOX1) was detected in tomato plants treated with vermicompost of arugula at 0, 2, 7, and 14 days after nematode inoculation. The result showed that the vermicompost of arugula significantly reduced the reproduction factor of the nematode by 54.4% to 70.5% in the three experiments and increased the dry weight of shoots of infected tomato plants. Gene expression analysis showed that LOX1 expression increased on the second and seventh day after nematode inoculation, while NPR1 expression decreased. The vermicompost of arugula showed stronger nematode inhibitory potential than the vermicompost of animal manure. The vermicompost of arugula is superior to arugula compost in suppressing the activity of M. javaniva and reducing its impact. It manipulates the expression of resistance genes and could induce systemic resistance against root-knot nematodes.

Plant-Parasitic Nematode Genera Associated with Turfgrass in Maryland Golf Courses and Athletic Fields

  • Fereshteh Shahoveisi;Benjamin Waldo
    • The Plant Pathology Journal
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    • 제40권3호
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    • pp.272-281
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    • 2024
  • Field surveys were conducted to assess the occurrence and diversity of plant-parasitic nematodes (PPNs) in golf courses and athletic fields across Maryland, USA, during 2022 and 2023. A total of 28 golf courses and ten athletic fields were surveyed, revealing the prevalence and abundance of 13 PPNs taxa in the region. Criconemoides was identified as the most prevalent (94.9%) and Tylenchorhynchus as the most abundant (2.3) across all samples. Central golf courses (west side of the Chesapeake Bay) exhibited a high prevalence of Criconemoides and Tylenchorhynchus, while Eastern Shore golf courses and athletic fields displayed a higher prevalence of Helicotylenchus and Criconemoides. Further, Belonolaimus longicaudatus was reported for the first time from turfgrass in Maryland, raising concerns due to its potential to cause severe damage on both cool- and warm-season turfgrass. Biodiversity analysis indicated that richness (R2) was higher in athletic fields, while diversity (H') and evenness (J') were significantly greater in golf courses. This study provides baseline information for monitoring PPNs distribution in Maryland and also for the development of effective nematode management approaches in turfgrass ecosystems.