• Title/Summary/Keyword: pot culture

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Concanamycin B, Active substance Against Phytophthora capsici Produced by Streptomyces neyagawaensis 38D10 Strain (Streptomyces neyagawaensis 38D10 균주가 생산하는 concanamycin B의 항고추역병 활성)

  • Kim, Chang-Jin;Lee, In-Kyoung;Yun, Bong-Sik;Yoo, Ick-Dong
    • Microbiology and Biotechnology Letters
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    • v.21 no.4
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    • pp.322-328
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    • 1993
  • During the screening of antifungal compounds from microbial secondary metabolites to control phytophthora blight of red pepper caused by Phytophthora capsici, a soil isolate, strain 38D10 was selected. Based on taxonomic studies, this strain was identified as Streptomyces neyagawaensis. The antifungal compound was purified from culture broth by HP-20 column chromatography, ethyl acetate extraction, silica gel column chromatography, HPLC and identified as concanamycin B by UV. $^1H$-NMR, $^{13}C$-NMR, SIMS analysis. Concanamycin B has strong antifungal activity against some phytopathogenic fungi but not antivacterial activity and preventive value were 50% and 100% at 125ppm and 250ppm in pot assay.

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Bacillus subtilis YB-70 as a Biocontrol Agent of Fusarium solani causing Plant Root-Rot

  • KIM, YONG-SU;HO-SEONG LIM;SANG-DAL KIM
    • Journal of Microbiology and Biotechnology
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    • v.4 no.1
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    • pp.68-74
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    • 1994
  • A bacterial strain YB-70 which has powerful biocontrol activity against Fusarium solani causing plant root-rot resulting in considerable losses of many economical crops was isolated and selected from over 500 isolates from a ginseng rhizosphere in suppressive soil, and identified as a strain of Bacillus subtilis. In several biochemical and in vitro antibiosis tests on F. solani with culture filterates from B. subtilis YB-70, our data strongly indicated metabolites which mediated inhibition of the fungal growth were presumed to be heat-stable, micromolecular, and ethyl alcohol solutable antifungal substances. Suppression of root-rot by B. subtilis YB-70 was demonstrated in pot trials with eggplant (Solanum melongena L) seedlings. Treatment of the seedling with the bacterial suspension (1.7~1.9$\times$$10^5$ CFU/g) in F. solani-infested soil significantly reduced disease incidences by 68 to 76% after 25 to 30 days. The results supported that B. subtilis YB-70 have excellent potentials as a biocontrol agent.

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Production of Protein-bound Polysaccharides by Solid-substrate Fementation of Lentinus edodes (표고버섯의 고체배양에 의한 단백 다당류 생산)

  • 박경숙
    • The Korean Journal of Food And Nutrition
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    • v.11 no.6
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    • pp.667-672
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    • 1998
  • The possibility of solid-substrate fermentation of Lentinus edoes for the productin of protein-boud polysaccharides (PBP) was studied. Zeolite and orchid-pot soil were used as solid materials for the culture because of the desirable physical properties. Sucrose and starch were good carbon sources for the production of PBP by the solid-substrate fermentatin of L. edodes. Among the nitrogen source, bactosoyton was very effective for the PBP production. The optimum pH for solid-substrate fementation for the production of PBP was at pH of 5.5. The PBP production reached to 5∼5.5mg per 100g solid-substrate.

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A Study on Comparison of Korean and Western Furniture Terminology - Focusing on Traditional Cupboard - (한국과 서구의 가구 용어 비교 연구 - 전통 찬장을 중심으로 -)

  • Moon, Sun-Ok;Jang, Hyun-Young
    • Journal of the Korea Furniture Society
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    • v.24 no.4
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    • pp.389-399
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    • 2013
  • This study focuses a comparison of Korean and Western Furniture culture on traditional cupboard terms to make the people understand and distinguish the form of the various Korean and Western cupboard made by the craftsmanship before the industrial Revolution. As the result, the Korean cupboard shows Kangwon Chanjang/cupboard, Gyeonggi Chanjang/cupboard by the local name, dwiju Chanjang/cupboard, three-tiered Chanjang/cupboard, four-tired Chanjang/cupboard, two-tiered Chantak/cupboard, three-tiered Chantak/cupboard in the terms of the form. Korean cupboards are called Chanjang and Chantak. The Western cupboard shows cupboard, buffet, livery cupboard, cupboard-bed, corner cupboard, court cupboard, turkey-breast cupboard, pot cupboard, press, press cupboard, hall cupboard, sideboard, hunt sideboard, huntboard, cabinet, corner cabinet, writing cabinet, art cabinet, china cabinet, dresser, safe, meat safe, wall closet, wall cupboard, hanging corner cupboard, food cupboard in the terms of the various forms.

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Serratia plymuthica Strain A2l-4: A Potential Biocontrol Agent Against Phytophthora Blight of Pepper

  • Shen, Shun-Shan;Kim, Jin-Woo;Park, Chang-Seuk
    • The Plant Pathology Journal
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    • v.18 no.3
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    • pp.138-141
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    • 2002
  • A promising biocontrol agent, A2l-4, against Phytophthora blight of pepper was selected from 351 bacterial isolates collected from rhizosphere soils and roots of onion (Allium fistulosum L.). The isolate A21-4 was identified as Serratia plymuthica based on its 16S rRNA sequence and key characteristics as compared with that of an authentic culture of S. plymuthica (ATCC No. 6109D01). The isolate readily colonized on roots of various crops including pepper when inoculated on seed and not. Strain A2l-4 showed narrow spectrum of antibiotic activity, as revealed in its strong inhibitory activity to the genera Pythium and Phytophthora, but not to Fuasrium and Rhizoctonia. In pot experiments, none of the pepper seedlings treated with A2l-4 were infected by Phytophthora capsici, while 86% of the control plants were killed by the pathogen.

Comparison of Adjustments to Drought Stress Among Seedlings of Several Oak Species

  • Kim, Joon-Ho
    • Journal of Plant Biology
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    • v.37 no.3
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    • pp.343-347
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    • 1994
  • In order to compare the adjustment of 6 oak species to water stress, the components of water status, tissue elastic modulus, free proline content of leaves and morphological characteristics were determined in pot culture. uercus dentata and . mongolica responded effectively to drought with high root : shoot (R/S) ratio or maintenance of high turgor pressure by large and fast osmotic adjustment and . variabilis with maintenance of high turgor pressure by low elastic modulus under drought. Meanwhile, . aliena and . serrata responded effectively with low omotic potential (Ψo) at full saturation and . acutissima with long root in spite of rigid cell wall and high osmotic potential (Ψo) at full saturation. Proline content in leaves of . dentata, . mongolica and . aliena increased early and rapidly at high leaf water potential (Ψleaf). The results indicate that 6 oak species have adjustment different from each other to water stress.

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Urea fertilizing effect on mulberry tree (상수에 대한 요소 비효시험)

  • 박병희;노현상
    • Journal of Sericultural and Entomological Science
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    • v.3
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    • pp.69-72
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    • 1963
  • The purpose of this work is to investigate the effects of urea and ammonium sulfate on Kairyo Nezumigaeshi mulberry from 1959 to 1963 at Sericultural Experiment Station. The results obtained are as follows. 1. Both urea and ammonium sulfate were the same fertilizing effects. 2. The optimum fertilizer ratio of urea and ammonium sulfate for spring and summer fertilizing was 40 : 60 in case of mulberry pot culture. This was good for harvest.

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A New Variety, 'Yeeun', an Asiatic Hybrid Lily for Pot and Bedding Plant

  • Rhee, Hye-Kyung;Lim, Jin Hee;Cho, Hae Ryong;Kim, Mi Seon;Shin, Hak Ki
    • Korean Journal of Breeding Science
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    • v.40 no.4
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    • pp.546-549
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    • 2008
  • 'Yeeun' an Asiatic hybrid lily was released in 2005 at National Horticultural Research Institute (NHRI), Rural Development Administration (RDA), Suwon, Korea. The cross was made in 1994 between Liliium Asiatic 'White Bird' white colored, and Liliium Asiatic 'Cote d'Azur', pink colored variety. It was preliminarily selected as 'A96-5' in 1996. Multiplication and bulbing, and characteristic tests were conducted from 1997 to 2004. The evaluation of characteristics was investigated as 'Wongyo C1-21' in 2004 at Suwon. 'Yeeun' flowers in the end of June and grows 41.6 cm stem length. Flowers are upward-facing, unspotted in petals and yellow green (RHS, 18C). Year-round flowering can be by storing the bulb under $-1.5^{\circ}C$ conditions. For forcing culture, it is necessary to add calcium to the fertilizer or remove side scales to prevent leaf scorch. It is needed to control Botrytis disease in wet season.

A Study on the characteristic of the tableware pottery and the Food Culture for Genre Painting in the 18th Chosun Period -Focused on the works of Dan-won Kim Hong-do- (풍속화(風俗畵)에 나타난 18세기(世紀) 조선시대(朝鮮時代) 식기(食器)와 음식문화(飮食文化) 연구 - 단원(檀園) 김홍도(金弘道)의 작품을 중심으로 -)

  • Kim, Mi-Hye;Chung, Hae-Kyung
    • Journal of the Korean Society of Food Culture
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    • v.22 no.6
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    • pp.653-664
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    • 2007
  • This study intends to consider about the food culture during the latterly Chosun Dynasty through the genre paintings which are depicted realistically about the total food life figures for example not only the foods, but also that people who eat and drink the food and eating implements, eating methods. There are 9 pieces of works Kim hong-do's which are the best appraisal on the incorporated Korean emotion and on the real life of general public. Those are selected for this study's characteristics through the literature consideration. The characteristics of the tableware pottery and food culture are following things. The first is a white porcelain's development and popularization. In the latterly Chosun Dynasty period, the development of the agriculture and commerce made been connected to the affluent food cultures, these made increase the porcelain's use of upper classes and these made been connected to the development of the porcelain's cultures. The second is the development of various pottery with a dark brown glaze manufactures. The development of agriculture and economy power made bring the development of the kinds of sauces and Kimchi culture with an inflow of foreign crops and these made making the large an earthenware pot or jar which could store something during the long time. The third is the development of the small dining table on the eating the bread of idleness. In the Chosun dynasty period, the food style was been unified to he eating the bread of idleness and been lowered. These made developed of various small dining table through the underfloor heating system's generalization. The fourth is the development of the spoon with the soup culture. It is the East Asia called that the spoon culture boundary, this show the characteristic that we use the spoon mainly compare with another countries. Finally, it is universal use of the fixed quantitative implements. They could live quantitative life with the scales which are jar of soy sauce, liquor jug, jar, scoop leading a set of tableware.

Effects of Pseudomonas Fluorescens, KR-164 on Plant Pathogenic Microorganisms (식물(植物) 병원성(病源性) 미생물(微生物)에 미치는 Pseudomonas fluorescens, KR-164의 영향(影響))

  • Rhee, Young-Hwan;Kim, Yeong-Yil;Lee, Jae-Pyeong;Kim, Yong-Wong;Kim, Yong-Jae;Lee, Jae-Wha
    • Korean Journal of Soil Science and Fertilizer
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    • v.23 no.1
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    • pp.53-59
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    • 1990
  • The antagonistic fluorescent pseudomonas, which was isolated from continuous cropping rhizosphere of pepper and cucumber, was identified as Pseudomonas fluorescens (P.f.). For further study, transformant was derived from the isolated P.f. after spontaneous mutation to give antibiotic resistance to nalidixic acid and rifampicin as marked strain. Both P.f. and transformant strains were used for this study and the results obtained were summarized as follows. 1. One of the most effective antagonistic strain, KR164, was selected against F. solani, F. oxysporum, R. solani and this strain was identified and classified as Pseudomonas fluorescens biotype IV. 2. Transformant, KR1641, was derived from strain KR164 and both strains had the same biological and biochemical characteristics. 3, Mycelial lysis and abnormal mycelia of plant pathogenic fungi were microscopically observed after simultaneous culture of fungus and given bacterial strain. 4. The length of chinese cabbage to the autolyzed became longer with given bacterial strain in dark culture. 5. Percentage of germination, number of leaves, length of height, and length of root in chinese cabbage in pot experiment were improved by inoculation of given bacterial strain. 6. The number of given bacterial strain kept generally stable until 34 days after inoculation of itself in pot experiment. Inoculation of given bacterial strain did affect the number of plant disease fungi to be decreased but did not affect the number of other bacteria, Bacillus, in pot experiment.

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