• 제목/요약/키워드: higher fungi

Search Result 842, Processing Time 0.023 seconds

Populations of Fungi and Bacteria Associated with Samples of Stored Rice in Korea

  • Oh, Ji-Yeon;Jee, Sam-Nyu;Nam, Young-Woo;Lee, Ho-Joung;Ryoo, Mun-Il;Kim, Ki-Deok
    • Mycobiology
    • /
    • v.35 no.1
    • /
    • pp.36-38
    • /
    • 2007
  • Stored rice was collected from rice processing complexes of National Agricultural Cooperative Federation of 11 regions in Korea to evaluate the occurrence of fungi and bacteria and to identify the predominant fungi and bacteria to the genus levels. Most rice samples generally produced the higher levels of fungi and bacteria than white rice. The occurrence of fungi and bacteria varied in various locations of Korea. Among fungi observed, Aspergillus spp. and Penicillium spp. were dominant in the samples and Aspergillus spp. were observed more frequently than Penicillium spp. Predominant bacteria from rice and white rice samples tentatively belonged to the Genus Bacillus, Pectobacterium, Pantoea, and Microbacterium according to BIOLOG and FAME analyses. The results of this study showed that rice in Korea was contaminated in a relatively high level by two dominant storage fungi such as Aspergillus spp. and Penicillium spp. In addition, occurrence of mycotoxins in rice by the fungi could be possible and thus it is necessary to control the storage fungi.

Biodegradation of aromatic hydrocarbons by several white-rot fungi

  • Song, Hong-Gyu
    • Journal of Microbiology
    • /
    • v.35 no.1
    • /
    • pp.66-71
    • /
    • 1997
  • To investigate the biodegrading capability of several white-rot fungi isolated in Korea, biodegradation of BTX (benzene, toluene, xylene), phenanthrene and pyrene were tested in fungal cultures. Phanerochaete chrysosporium removed 20-30% of BTX mixture during 21 days of incubation in serum bottle. Coriolus versicolor KR-11W and Irpex lacteus mineralized 10.02 and 8.26% of totla phenanthrene, respectively, which were higher than in other studies with P. chrysosporium. These two strains also showed high mineralization rates (9.2-10.1%) for 4-ring pyrene. I. lacteus metabolized most of the added pyrene and 23.29% was incorporate dinto fungal biomass. Almost 50/5 of the pyrene was converted to polar metabolites and recovered from aqueous phase of culture. These results indicated that some white- rot fungi have higher biodegradability than P. chrysosporium and could be used in bioremediation of aromatic hydrocarbon contaminants in soil.

  • PDF

Relationship between Higher Fungi Distribution and Climatic Factors in Naejangsan National Park (내장산국립공원의 고등균류 발생과 기후환경 요인과의 관계)

  • Jang, Seog-Ki;Kim, Sang-Wook
    • The Korean Journal of Mycology
    • /
    • v.40 no.1
    • /
    • pp.19-38
    • /
    • 2012
  • This study was conducted to investigate the diversity of higher fungi and relationship between higher fungi and climatic factors in Naejangsan National Park from April 2004 to October 2010. The obtained results from investigation were as follows. The higher fungi were classified into 48 families, 158 genera and 451 species in Basidiomycotina, 13 families, 26 genera and 39 species in Ascomycotina, and 4 families, 7 genera and 7 species in Myxomycetes, and most of them belonged to Hymenomycetidae in Basidiomycotina. Dominant species belonged to Ttricholomataceae (72 species), Russulaceae (39 species), Polyporaceae (41 species), Boletaceae (40 species), Cortinariaceae (35 species) and Amamtaceae (28 species). For the habitat environment, the ectomycorrhizal mushrooms were 38.8% (15 families, 36 genera and 193 species), litter decomposing and wood rotting fungi 39.4% (36 families, 107 genera and 196 species), grounding Fungi 19.9% (24 families, 51 genera and 99 species) and others 1.8% (3 families, 4 genera and 9 species). Monthly, most of higher fungi were found in July, August and September, and least found in November. In climatic conditions, most higher fungi were occurred in $23^{\circ}C$and above of mean temperature, $20^{\circ}C$and above of minimum temperature, and $29^{\circ}C$and above of maximum temperature. most of higher fungi were found in 73% and above of relative humidity and 200 mm and above of monthly precipitation. In case of ectomycorrhizal fungi like Amamtaceae, Boletaceae and Cortinariaceae, significance levels are not high in $32^{\circ}C$ and above of maximum temperature which mostly affects species occurrence than other climatic factors of mean and minimum temperature and monthly precipitation.

Exposure Assessment for Airborne Biological Agents in Sawmills (제재업의 생물학적인자 노출실태 평가)

  • Park, Hae-Dong;Park, Hyun-Hee;Lee, In-Seop
    • Journal of Korean Society of Occupational and Environmental Hygiene
    • /
    • v.20 no.4
    • /
    • pp.274-281
    • /
    • 2010
  • The objectives of this study are (a) to investigate the distribution patterns and exposure concentrations of biological agents in sawmill industries and (b) to compare sampling methods of biological agents. The representative processes of 5 sawmills were selected to measure total airborne bacteria, fungi, endotoxin as well as dust. Airborne bacteria and fungi were measured with one stage impactor, six stage impactor and gelatin filteration methods. Endotoxin was collected with polycarbonate filters and analysed by kinetic chromogenic Limulus Amebocyte Lysate method. Geometric mean levels of airborne bacteria, fungi, endotoxin and dust were 1,864 CFU/$m^3$, 2,252 CFU/$m^3$, 31.5 EU/$m^3$ and 2.4 mg/$m^3$. The ratios of indoor/outdoor concentrations were 3.7 for bacteria, 4.1 for fungi, 3.3 for endotoxin and 9.7 for dust. The respiratory fractions of bacteria were 68.0, 50.9, 49.2 and 45.1% in band-saw, table-saw, rip-saw process and outdoor air. The respiratory fractions of fungi were 78.7, 90.8, 87.5 and 84.8% in band-saw, table-saw, rip-saw process and outdoor air, respectively. There was no significant differences in bacterial concentrations among single stage, six stage impaction and filteration methods. But, fungal concentrations measured with filtration methods were significantly higher than those with impaction methods. Geometric mean levels of airborne bacteria and fungi were higher than the OSHA guideline values of 1,000 CFU/$m^3$. The respiratory fractions of fungi were above 75%. The concentrations of biological agents were significantly different among culture-based sampling methods. In the exposure assessments of biological agents, further studies are needed for the comparisons of diverse sampling methods and the investigations of environmental factors.

The Flora of Higher Fungi in Mt. Muhack Areas(III) (무학산(舞鶴山) 일대(一帶)의 고등균류(高等菌類)(III))

  • Park, Seong-Sik;Cho, Duck-Hyun;Lee, Ji-Yul
    • The Korean Journal of Mycology
    • /
    • v.15 no.2
    • /
    • pp.71-75
    • /
    • 1987
  • More then 120 species of higher fungi were collected in Mt. Muhack areas during the period from May, 1985 to September, 1986. These higher fungi were identified. As a result of identification, Hygrocybe ovina(Fr.) Kuhn., lnocybe albodisca Peck., I. calospora Que'I., and I. kobayasii Hongo were new to be Korea.

  • PDF

The Flora of Higher Fungi in Mt. Jiri Areas (III) (지리산일대(智異山一帶)의 고등균류(高等菌類)(III))

  • Park, Seong-Sick;Cho, Duck-Hyun
    • The Korean Journal of Mycology
    • /
    • v.17 no.3
    • /
    • pp.132-136
    • /
    • 1989
  • Higher Fungi were collected in Mt. Jiri National Park areas from May, 1987 to October, 1988. These higher fungi were identified. As a result of identification, Boletellus linderi Sing., Lactarius corrugis Peck, L. gerardii var. gerardii Hesler & Smith, L. gerardii var. fagicola Hesler & Smith and L. subgerardii Hesler & Smith were newly recorded in Korea.

  • PDF

The Flora of Higher Fungi in Mt. Mudeung Area(II) (무등산일대(無等山一帶)의 고등균류상(高等菌類相)(II))

  • Cho, Duck- Hyun;Lee, Ji-Yul
    • The Korean Journal of Mycology
    • /
    • v.9 no.2
    • /
    • pp.73-76
    • /
    • 1981
  • One hundred specimens of higher fungi were collected at Mt. Mudeung area from April to October, 1980. These higher fungi were identified and classified into 2 classes, 2 subclasses, 7 orders, 14 families, 21 genera and 33 species. Among them, Baeospora proved to be new genus in Korea. And Baeospora myosura (Fr.) Sing., Marasmius purpureostriatus Hongo, Psathyrella gracilis (Fr.) Quel., lnocybe sphaeospora Kobayasi and Trametes coccinea Fr. were found to be new in Korea.

  • PDF

Notes on the Korean Higher Fungi (IX) (한국산 고등균류기 (IX))

  • DuckHyunCho
    • Korean Journal of Plant Resources
    • /
    • v.8 no.1
    • /
    • pp.63-70
    • /
    • 1995
  • Many higher fungi were collected at Mt. Manduck, Mt. Duckwoo and Mt Jiri from June, 1990 to October, 1991. these higher fungi were identified. According to the resulting, following genus and species are newly to Korea : genus of Strobilurus and species of Strobilurus oshimae, Mycena chlorophos, Marasmius pulcherripos, Pholiota astragalina, cortinarous subedibutrs and Boletellus schinchanius.

  • PDF

Notes on the Korean Higher Fungi(XII) (한국산 고등균류기(XII))

  • DuckHyunCho
    • Korean Journal of Plant Resources
    • /
    • v.9 no.1
    • /
    • pp.31-39
    • /
    • 1996
  • Many higher fungi were collected at MI.Moak Provincial Park (Chonlabuk-Do), Mt.Pangtae(Kangwon-Do) and Byunsan Pennisula National Park from April. 1995 to October, 1995. These higher fungi were identified.According to the results, these species were newly to Korea: Laccaria ohiellsis, Mycef1a clavularis. M.acicula. Marasmius ramealis. M.calopus, Strobilurus esculefltus, Agrocybe sphaleromorpha and Corlinarius fasciatus.

  • PDF

The Flora of Higher Fungi in Mt. Mudeung Area(I) (무등산(無等山) 일대(一帶)의 고등(高等) 균류상(菌類相)(I))

  • Cho, Duck-Hyun;Lee, Ji-Yul
    • The Korean Journal of Mycology
    • /
    • v.8 no.2
    • /
    • pp.95-98
    • /
    • 1980
  • More than 100 specimens of higher fungi were collected at Mt. Mudeung area during the period of 1979 to May, 1980. These higher fungi were identified and included 2 clas­ses, 6 orders, 18 families, 32 genera and 45 species. Among them, Hygrophorus imazekii Hongo, Xeromphalina cauticinalis (Fr.) $K{\ddot{u}}hner$ et Marie, Paneolus campanulatus (L. ex Fr.) $Qu{\acute{e}}l$. and Cortinarius melliolens P.D. Orton were new to be Korea.

  • PDF