• Title/Summary/Keyword: Fusarium moniliforme

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Biological Management of Virulent Fusarium Species on Asparagus with Avirulent Fusarium Species In Vitro (비병원성(非病原性) Fusarium균(菌)을 이용(利用)한 아스파라거스의 병원성(病原性) Fusarium균(菌)의 생물적(生物的) 방제(防除))

  • Lee, Youn-Su
    • Korean Journal of Environmental Agriculture
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    • v.13 no.3
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    • pp.288-300
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    • 1994
  • Fusarium oxysporum was isolated most frequently, followed by F. moniliforme, and F. solani from infected asparagus plants grown in the field. In pathogenicity tests both with seedlings and plantlets, F. moniliforme showed higher virulence than Fusarium oxysporum did in general. Fusarium moniliforme showed more consistent virulence on both seedlings and plantlets than F. oxysporum did. Fusarium oxysporum showed higher virulence on plantlets than on seedlings. Fusarium solani showed very weak or no sign of virulence on seedlings and plantlets, respectively, in both tests. In protection tests with plantlets, most protection of asparagus against virulent fusarial infections occurred when challenge isolates were inoculated five or seven days after inoculation of protective fusarial species. Avirulent F. oxysporum was a more effective protective agent against infection of F. moniliforme than it was against F. oxysporum. Fusarium solani was more effective against infection of F. oxysporum than it was against F. moniliforme.

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Effect of Seed Treatment and Observation of Seeds Infested with Fusarium moniforme by Scanning Electron Microscope (Fusarium moniliforme 감염벼종자의 소독과 주사전자현미경적 조직관찰)

  • Sung Jae Mo;Lee Soon Hyung;Yu Seung Hun;Shin Gwan Chull
    • Korean Journal Plant Pathology
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    • v.1 no.1
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    • pp.51-55
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    • 1985
  • This study was carried out to observe the propagule of Fusarium moniliforme on the surface of rice seed and in the vascular bundle of rice stem by scanning electron microscope. Spore and mycelium of F. moniliforme were observed on the surface of rice seed and in the vascular bundle of rice stem. After seed treatment with Benlate T and Busan 3D, F. moniliforme was not isolated from chaffs, but frequently from brown rice, irrespective of disinfection period.

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Soil-borne Diseases of Barley in Barley in Korea Caused by Fusarium spp. (한국에서의 Fusarium균에 의한 보리의 토양전염성병)

  • Sung Jae Mo;Snyder William C.;Chung Bong Koo;Chung Bong Jo
    • Korean journal of applied entomology
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    • v.16 no.2 s.31
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    • pp.115-119
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    • 1977
  • Fusarium spp. were isolated from field grown rice, wheat and barley in 1976. The pathogens isolated included Fusarium (Calonectria) nivale, F. (Gibberella) moniliforme and F. (Gibberella) roseum 'Graminearum' and 'Avenaceum'. Among the saprophytes F. (Nectria) episphaeria was isolated. In each of these isolated both the Fusarium and perfect stages were found. F. nivale, and F. episphaeria with there Calonectria, and Nectria stages do not seem to have been recorded previously in Korea. Of the Fusaria isolated, $66.3\%$ from rice were F. moniliforme, and $68.2\%$ from wheat and barley were F. roseum 'Graminearum'. Perithecia also were produced under laboratory conditions. F. moniiforme was recovered wheat heads and also from barley seed.

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Rice Seed Infection of Fusarium spp. at Paddy Field and Selection of Seed Disinfectants (포장(圃場)에서 Fusarium속균(屬菌)의 종자(種子) 감염(感染)과 소독제(消毒劑)의 선발(選拔))

  • Sung, Jae-Mo;Lee, Eun-Jong;Yang, Sung-Suk
    • The Korean Journal of Mycology
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    • v.13 no.2
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    • pp.99-103
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    • 1985
  • F. roseum "Graminearum" and F. moniliforme were isolated from hulls of seeds collected from fields. F. roseum "Graminearum" was isolated from brown rice of all the varieties tested. F. moniliforme was isolated from Nagdongbyeo, Seomjinbyeo, Sinsunchalbyeo, Milyang 23, Baegyangbyeo and Samnambyeo. F. moniliforme was isolated from the most of the seeds damaged by sparrow and it formed sporodochia of this fungus. Five species including F. moniliforme were isolated from plant hopper collected from paddy fields in September. To select seed a disinfectant, twelve fungicides were tested and P242 was one of the best effective fungicidetested. After seed treatment with the fungicide, F. moniliforme was not isolated from hulls but was frequently isolated from brown rices.

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Black Leaf Spot of Dendrobium phalaenopsis Caused by Fusarium moniliforme (Fusarium moniliforme에 의한 덴파레 검은점무늬병)

  • Lee, Dong-Hyun;Hur, Jae-Seoun;Koh, Young-Jin
    • Research in Plant Disease
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    • v.9 no.3
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    • pp.149-152
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    • 2003
  • Black leaf spot disease occurred on Dendrobium phalaenopsis grown in farmer's fields located in Bonggangmyon, Gwangyang-eup, Jeonnam, Korea. Black small spots occurred on leaves at initial stage of infection and the infected leaves turned yellow from the tip. The yellow leaves were falled, resulting in stem blighting or eventual death of the entire plant. White mycelial colony of the causal fungus grown on potato dextrose agarturned dark violet later and optimum temperature for the mycelial growth was $25^{\circ}C$. The causal fungus isolated from the black leaf spot on D. phalaenopsis was identified as Fusarium moniliforme based on the mycological characteristics and pathogenicity. The fungus also caused same symptoms on leaves of Phalaenopsis sp. and Cymbidium sp. as well sa D. phalaenopsis by wound inoculation. This is the first report on black leaf spot of D. phalaenopsis caused by F.moniliforme in Korea.

Characterization of yeast cell wall lytic enzyme from Fusarium moniliforme (Fusarium moniliforme이 생산하는 효모세포벽 분해효소의 특성)

  • 장판식;박관화;이계호
    • Microbiology and Biotechnology Letters
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    • v.14 no.6
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    • pp.467-471
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    • 1986
  • Yeast cell wall lytic enzyme was purified from Fusarium moniliforme by ammonium sulfate fractionation and gel column chromatography. The lytic activity was found to consist of three enzyme activities which were resolved on Sephadex G-100. The first peak on chromatogram exhibited proteolytic, lytic and laminarinase activities, and the second had both lytic and laminarinase activities, whereas the third peak was shown to contain lytic activity only. Three enzyme activities showed the synergistic effect and reducing agents accelerated the yeast roil wall lysis. This indicates that lytic, proteolytic and laminarinase activity acted cooperatively in the lysis of intact cells. Tannic acid precipitate of crude enzyme constituted of three enzyme activities had a high lytic activity on viable yeast cell and has proved useful in yeast protoplast formation.

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Effect of Water Activity on the Growth of Fusarium moniliforme NRRL 13569 and on the Fumonisin $B_1$ Production on Rough Rice (벼의 수분활성도가 Fusarium moniliforme NRRL 13569의 성장과 Fumonisin $B_1$ 생성에 미치는 영향)

  • Chung, Soo-Hyun;Lee, Taek-Soo;Kim, Young-Bae
    • Korean Journal of Food Science and Technology
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    • v.27 no.1
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    • pp.119-123
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    • 1995
  • In the present study, an attempt was made to investigate the effect of water activity(Aw) of rough rice on the growth of Fusarium moniliforme NRRL 13569 as well as on the production of Fumonisin $B_1(FB_1)$. The maximum growth of F. moniliforme and the production of $FB_1$, occurred at Aw 0.97 when the Aw of rough rice was controlled from 0.85 to 0.97. The fungal growth and $FB_1$, production decreased with the decrease of Aw. Sparse growth of fungus was observed even at Aw 0.85. $FB_1$ production on rough rice decreased considerably under Aw 0.97 and the trace amounts of $FB_1$ were observed at Aw 0.93 and 0.90. Therefore Aw required for the prevention of $FB_1$ production was turn out to be below 0.90 while that of fungal growth below 0.85.

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Chromosomal Studies on the Genus Fusarium(I) (Fusarium속(屬)의 염색체(染色體)에 관한 연구(硏究)(I))

  • Min, Byung-Re
    • The Korean Journal of Mycology
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    • v.14 no.4
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    • pp.253-256
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    • 1986
  • Chromosome numbers were studied for three species of the genus Fusarium from observation of vegetative nuclear division in hyphae with aid of Giemsa-HCl techniques. It was confirmed that observation on the nuclear division could best be made at the growing hyphal tip and near the cells. The general shape of chromosome was dot-like form. The results confirmed that the chromsome number in n=8 in F. solani and F. moniliforme, and n=6 in F. cocophilum.

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Prevalence and Transmission of Seed-Borne Fungi of Maize Grown in a Farm of Korea

  • Basak, A.B.;Lee, Min-Woong
    • Mycobiology
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    • v.30 no.1
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    • pp.47-50
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    • 2002
  • Seed-borne fungi of some maize cultivars/lines grown during the months from May to September of 2001, collected from Dongguk University farm, Go Young City, IL Sang Gu, Korea were detected by blotter method. In all six fungi namely Alternaria alternata(Fr.) Keissler, Aspergillus niger Van Tiegh, Fusarium moniliforme Sheldon, Fusarium sp., Penicillium sp. and Ustilago zeae Unger. were found to associated with maize seeds. Prevalence of seed-borne fungi also varied. The highest percentages of seed-borne fungi were recorded with Fusarium moniliforme and the lowest in Penicillium sp. Transmission of all seed-borne pathogens from seeds to seedlings were also detected by test tube seedling symptom test. Among the seed-borne fungi, Alternaria alternata, Fusarium moniliforme and Fusarium sp. produced distinct seed rot and seedling infection symptoms. All the transmitted seed-borne fungi might be caused primary source of infection to the maize crop.

Effect of Water Potential on Mycelial Growth, Reproduction and Spore Germination by Fusarium moniliforme (Fusarium moniliforme의 Propagule형성(形成)과 발아(發芽)에 미치는 Water Potential의 효과(效果))

  • Sung, Jae-Mo;Lee, Eun-Jong;Park, Jong-Seong
    • The Korean Journal of Mycology
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    • v.12 no.3
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    • pp.99-103
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    • 1984
  • Hyphal growth by Fusarium moniliforme was best at -14 bars osmotic water potential. Hyphal growth was prevented at -94 bars. The production of microconidia was best at -14 bars osmotic potential and prevented at -84 bars regardless of Strain. In contrast, this fungus sporulated macroconidia best at -1.4 bars and progressively less with each increment drop in water potential below that of basal media. The rate of spore germination followed a similar pattern with all of the spores; uniformly maximal at about -1.4 bars and progressively slower as the water potential was lowered from -1.4 bars to -42 bars. Under the natural conditions, plants infected by F. moniliforme produce microconidia on the dead tissues instead of producing macroconidia. This phenomenon agrees well with the water potential experiment since the dead plant tissues have a lower water potential than the living plant.

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