• Title/Summary/Keyword: Rot

Search Result 1,759, Processing Time 0.031 seconds

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
    • /
    • v.36 no.2
    • /
    • pp.77-80
    • /
    • 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.

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

  • Choi, Jae Eul
    • Korean Journal of Agricultural Science
    • /
    • v.26 no.1
    • /
    • pp.1-5
    • /
    • 1999
  • This experiment was carried out to define the development of control method against rhizome rot of ginger. It was difficult to control of rhizome rot of ginger completely by way of only rhizome sterlization. When soil were stenilized with dazomet, and metalacxyl granule was applied, higher than 95% of control value as well as 39% of yield increase compared to control were found. Soil drenching with metalacxyl cupper oxychloride and streptomycin controlled the rhizome rot satisfactorily, but was inferior to the above mentioned combination.

  • PDF

각종 white rot fungi에 의한 분산염료의 색제거 비교

  • Lee, Hyeon-Uk;Son, Dong-Chan;Im, Dong-Jun
    • 한국생물공학회:학술대회논문집
    • /
    • 2000.04a
    • /
    • pp.402-405
    • /
    • 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.

  • PDF

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

  • LEE Du Hyung
    • Korean journal of applied entomology
    • /
    • v.1
    • /
    • pp.47-50
    • /
    • 1962
  • Ripe rot, caused by Glomerlla cingulata is the most destructive disease of grapes in korea. this experiment was to determine the most effective control teratment for ripe rot of grapes. The variety, Campbell Early, was used in the trials planted on land managed by the Pomology Section of the Horticultural Experiment Station. This experiment indicated that Tuzet and Delan-wp were most effective in the control of ripe rot of grapes either with or without bagging in 1962.

  • PDF

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

  • 류원률;서윤수;장용근;조무환
    • KSBB Journal
    • /
    • v.15 no.3
    • /
    • pp.262-267
    • /
    • 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.

  • PDF

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

  • Kim, Gyo-Chang;Do, Dae-Hong;Kim, Do-Yeong
    • The Korean Journal of Food And Nutrition
    • /
    • v.9 no.3
    • /
    • pp.275-280
    • /
    • 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.

  • PDF

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

  • 박숙영;이동현;정희정;고영진
    • Korean Journal Plant Pathology
    • /
    • v.11 no.4
    • /
    • pp.348-352
    • /
    • 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.

  • PDF

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

  • Bashasab, Rajkumar, Fakrudin;Kuruvinashetti, Mahaling S
    • The Plant Pathology Journal
    • /
    • v.23 no.2
    • /
    • pp.45-50
    • /
    • 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
    • /
    • v.26 no.2
    • /
    • pp.198-202
    • /
    • 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.

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

  • Sung, Jae-Mo;Chung, Kil-Woong
    • The Korean Journal of Mycology
    • /
    • v.11 no.2
    • /
    • pp.99-101
    • /
    • 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.

  • PDF