• 제목/요약/키워드: Rot

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Identification of Microdochium bolleyi Associated with Basal Rot of Creeping Bent Grass in Korea

  • Hong, Sung-Kee;Kim, Wan-Gyu;Choi, Hyo-Weon;Lee, Sang-Yeob
    • Mycobiology
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    • 제36권2호
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    • pp.77-80
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    • 2008
  • Symptoms of basal rot occurred sporadically on creeping bent grasses growing at a golf course in Hampyeong, Korea in April 2007. Ten isolates of Microdochium sp. were obtained from leaves and crowns of the diseased bent grasses. All isolates were identified as Microdochium bolleyi based on morphological, cultural, and molecular characteristics. This is the first report on M. bolleyi associated with basal rot on creeping bent grass in Korea.

생강 근경부패병의 약제방제 (Chemical Control of Rhizome Rot of Ginger by Seed-Rhizome and Soil Treetment)

  • 최재을
    • 농업과학연구
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    • 제26권1호
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    • pp.1-5
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    • 1999
  • 본 시험은 생강의 안정적 재배에 위험을 주고 있는 생강근경부패병의 방제법을 개발하기 위하여 실시하였다. 근경부패병은 종자소독만으로 충분한 방제가 곤란하였다. 그러나 다조멧으로 토양소독을 하고 메타실 입제로 토양처리한 결과 무처리에 비하여 생장을 촉진시켰으며 95.5%의 방제가로 본 병의 방제에 매우 효과적이고 수량도 무처리에 비하여 39%의 증수효과를 갖어왔다. 메타실동수화제와 스트레토마이신을 혼합하여 3회 관주처리한 결과 87.1%의 방제효과가 있어 토양 소독보다는 방제효과가 낮았으나 근경부패병의 방제에 효과적이었다.

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각종 white rot fungi에 의한 분산염료의 색제거 비교

  • 이현욱;손동찬;임동준
    • 한국생물공학회:학술대회논문집
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    • 한국생물공학회 2000년도 춘계학술발표대회
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    • pp.402-405
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    • 2000
  • Batch culture system and continuous culture system were used to investigate the removal of disperse dye using several white rot fungi. White rot fungi used in the study were Coriolus hirsutus IFO 4917, Lenzites betulina IFO 6266, Coriolus versicolor IFO 30340 and Phanerochaete chrysosporium IFO 31249. The results of the batch culture experiment showed that white rot fungi used in this study had excellent dye removal abilities. Phanerochaete chrysosporium IFO 31249 was especially effective on the removal of disperse dyes. And continuous treatment of disperse red-60 was studied under bioreactor with vertical matrix using Phanerochaete chrysosporium IFO 31249. The removal efficiency of disperse red-60 were more than 95% in 0.20 ${\sim} 1.50 $hr^{-1}$ dilution rate and 90% in $1.83h^{-1}$ dilution rate.

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포도만부병방제에 관한 시험 (Study on the Control of Ripe Rot Disease of Grape)

  • 이두형
    • 한국응용곤충학회지
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    • 제1권
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    • pp.47-50
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    • 1962
  • 만부병은 포도의 착색기부터 장마가 오면 격발하는 병해로서 우리나라에 있어서 피해가 심함은 물논 방제가 어려운 것으로서 본 시험은 피대와 약제살포를 겸하는 것과 약제살포만을 하여 그 효과를 비교코저 원예시험장 과수과 포도원에서 품종 켐벨얼리를 공시하여 시험하였다. L 유대구는 무대구보다 약제간이나 무처리간에 있어서 포도만부병을 방제하는데 효과적 이였다. 2. Tuzet와 Delan은 유대구나 무대구에 있어서 다른 처리구보다 포도만부병방제에 효과적이었다

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백색부후균을 이용한 다환방향족 탄화수소(PAHs) 의 분해 (Biodegradation of Polycyclic Aromatic Hydrocarbons by White Rot Fungi)

  • 류원률;서윤수;장용근;조무환
    • KSBB Journal
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    • 제15권3호
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    • pp.262-267
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    • 2000
  • The white rot fungi Phanerochaete chrysosporium(IFO 31249) Trametes sp and Pleurotus sp. were studied for their ability to degrade Polycyclic Aromatic Hydrocarbons(PAHs) using anthracene and pyrene as model compounds. The disapperarance anthracene and pyrene of from cultures of wild type strains. P chrysosporium Trametes sp. and Pleurotus sp was observed However the activities of ligninolytic enzymes were not detected in P chrysosporium cultures during degradation while ligninolytic enzymes were detected in both culture of Trametes sp. and Pleurotus sp. Therefore our results showed that PAHs was degraded under ligninolytic as well as nonligninolytic conditions. The results also indicate that lignin peroxidase(LiP) mananese peroxidase(MnP) and laccase are not essential for the biodegradation of PAHs by white rot fungi.

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채소연부병균 Erwinia herbicola의 생육억제균 분리 및 특성 (Isolation and Characterization of Antagonistic Bacteria for Biocontrol of Erwinia herbicola Causing Vegetable Soft Rot)

  • 김교창;도대홍;김도영
    • 한국식품영양학회지
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    • 제9권3호
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    • pp.275-280
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    • 1996
  • For the selection of powerful antagonistic bacterium for biological control of Ewinia sp. causing vegetable soft rot, two excellent strains (54, 565) were selected from 1, 196 strains of bacteria which were isolated from rhizospere in vegetable root rot suppressive soil. Selected 2 strains were identified to be a species to Pseudomonas fluorescens S4 and pseudomonas fluorescens S65 (PS65). The highest of inhibitory activity was produced in 523 synthetic broth medium at pH 7.0 and 25t during 3 ethyl-Al-folpet, and the antibiotics such as vancomycin, perucillin and lincomycin, only PS4 was resistant to erythromycin.

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Botrytis allii에 의한 양파 잿빛썩음병 (Gray Mold Neck Rot of Onion Caused by Botrytis allii in Korea)

  • 박숙영;이동현;정희정;고영진
    • 한국식물병리학회지
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    • 제11권4호
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    • pp.348-352
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    • 1995
  • Severe gray mold neck rot of onion occurred in most farmers' fields in the southern part of Korea, and 20∼50% of onions were infected by the disease at Goheung, Chonnam, in 1994. Symptoms of the disease appeared on the lower leaves near the soil surface in late February. The symptoms initially appeared as yellowish blotch with compact gray mold on the surface of the infected leaves and developed to blast of the aboveground parts of onions. As brown to dark brown symptoms progressed around the necks of onion later, the bulbs were rotting gradually. Botrytis sp. repeatedly isolated from the lesions produced the typical symptom on the neck of healthy onion 7 days after wound inoculation of conidial suspension of the fungus. The fungus reisolated from the bulbs was identified as Botrytis allii Munn based on the morphological and cultural characteristics and pathogenicity. This is first report of a gray mold neck rot of onion in Korea.

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Genetic Variability of Sorghum Charcoal Rot Pathogen (Macrophomina phaseolina) Assessed by Random DNA Markers

  • Bashasab, Rajkumar, Fakrudin;Kuruvinashetti, Mahaling S
    • The Plant Pathology Journal
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    • 제23권2호
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    • pp.45-50
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    • 2007
  • Genetic diversity among selected isolates of Macrophomina phaseolina, a causal agent of charcoal rot (stalk rot) disease in sorghum was studied using PCR-RAPD markers. A set of ten isolates, from ten different rabi sorghum genotypes representing two traditional sorghum growing situations viz., Dharwad- a transitional high rainfall region and Bijapur- a semi-arid low rainfall region in South India. From a set of 40 random primers tested, amplicon profiles of 15 were reproducible. A total of 149 amplicon levels, with an average of 9.9 bands per primer, were available for analysis, of which 148 were polymorphic (99.3%). It was possible to discriminate all the isolates with any of the 15 primers employed. UPGMA clustering of data indicated that the isolates shared varied levels of genetic similarity within a range of 0.14 to 0.72 similarity coefficient index and it was suggestive that grouping of isolates was not related to sampling location in anyway. A high level of genetic heterogeneity of 0.28 was recorded among the isolates.

The Effect of Soil Physico-chemical Properties on Rhizome Rot and Wilt Disease Complex Incidence of Ginger Under Hill Agro-climatic Region of West Bengal

  • Sharma, B.R.;Dutta, S.;Roy, S.;Debnath, A.;Roy, M. De
    • The Plant Pathology Journal
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    • 제26권2호
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    • pp.198-202
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    • 2010
  • A study was conducted to find out the relationship of physico-chemical properties (viz. organic carbon(OC), pH, electrical conductivity, nitrogen, phosphorus and potassium content) of ginger growing soil with incidence percentage of rhizome rot and wilt disease complex of ginger. Organic carbon content and pH of the ginger soil contributed significantly (93%) in the prediction of ginger rhizome rot and wilt disease complex incidence with negative correlation. Soil having weak acidic reaction with OC percent greater than 2.25 was observed to have the lower average incidence of the disease.

콩 흑색(黑色) 뿌리 썩음병(病)의 이병(罹病) 정도(程度)에 따른 수량(收量) 감소(減少) (Yield Loss Associated with Disease Severity of Soybean Black Root Rot by Cylindrocladium crotalariae)

  • 성재모;정길웅
    • 한국균학회지
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    • 제11권2호
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    • pp.99-101
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    • 1983
  • Black root rot caused by Cylindrocladium crotalariae is one of the most serious soilborne disease in soybean. Plant height reduction of Hwangkeum Kong was 38% by the rotting of the whole main root and 9% by rotting of the half of the main root as compared with partial discoloration in the main root. Pod number per plant and seed weight were significantly reduced by the increase of the disease severity. Important yield components such as number of pods per plant and seed weight were negatively correlated with the soybean black root rot severity.

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