• Title/Summary/Keyword: spore analysis

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Analysis of Design Characteristic and Trend of Spore Casual Ware - Based on Comparison with Active Spore Ware - (국내 스포츠 캐주얼웨어의 디자인 특성과 트렌드 경향 분석 - 액티브 스포츠 웨어와의 비교 분석에 기초하여 -)

  • Lee In-Sung;Lhee Sang-Yung;Kim Tae-Hui
    • Journal of the Korea Fashion and Costume Design Association
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    • v.8 no.1
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    • pp.25-36
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    • 2006
  • This paper investigates recent trend and characteristic of sports casual ware. By literature review and case study, it compares active sports casual ware with sports ware and analyzes how the latter has been applied to the former. Further, it attempts to assess future design trend of sports casual ware The result of the analysis of 2004 F/W season's trend is the following. Most brands emphasize classic factors and, at the same time, adopts recent trends. They effectively use splendid colors to expose brand identity, and take advantage of sports games as a marketing tool of special lines. In addition, designs emphasizing women's sexy and healthy style are popular in sports casual ware. Recent trend is characterized by cross-over or hybrid. Active sports ware is expanded to a mixture with casual ware or casual ware featured sportive details and images.

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Proteomic Reference Map and Comparative Analysis between Streptomyces griseus S4-7 and wbiE2 Transcription Factor-Mutant Strain

  • Kim, Jisu;Kwon, Young Sang;Bae, Dong-Won;Kwak, Youn-Sig
    • The Plant Pathology Journal
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    • v.36 no.2
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    • pp.185-191
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    • 2020
  • Streptomyces griseus S4-7, a well-characterized keystone taxon among strawberry microbial communities, shows exceptional disease-preventing ability. The whole-genome sequence, functional genes, and bioactive secondary metabolites of the strain have been described in previous studies. However, proteomics studies of not only the S4-7 strain, but also the Streptomyces genus as a whole, remain limited to date. Therefore, in the present study, we created a proteomics reference map for S. griseus S4-7. Additionally, analysis of differentially expressed proteins was performed against a wblE2 mutant, which was deficient in spore chain development and did not express an antifungal activity-regulatory transcription factor. We believe that our data provide a foundation for further in-depth studies of functional keystone taxa of the phytobiome and elucidation of the mechanisms underlying plant-microbe interactions, especially those involving the Streptomyces genus.

Genome Profiling for Health Promoting and Disease Preventing Traits Unraveled Probiotic Potential of Bacillus clausii B106

  • Kapse, N.G.;Engineer, A.S.;Gowdaman, V.;Wagh, S.;Dhakephalkar, P.K.
    • Microbiology and Biotechnology Letters
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    • v.46 no.4
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    • pp.334-345
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    • 2018
  • Spore-forming Bacillus species are commercially available probiotic formulations for application in humans. They have health benefits and help prevent disease in hosts by combating entero-pathogens and ameliorating antibiotic-associated diarrhea. However, the molecular and cellular mechanisms of these benefits remain unclear. Here, we report the draft genome of a potential probiotic strain of Bacillus clausii B106. We mapped and compared the probiotic profile of B106 with other reference genomes. The draft genome analysis of B106 revealed the presence of ADI pathway genes, indicating its ability to tolerate acidic pH and bile salts. Genes encoding fibronectin binding proteins, enolase, as well as a gene cluster involved in the biosynthesis of exopolysaccharides underscored the potential of B106 to adhere to the intestinal epithelium and colonize the human gut. Genes encoding bacteriocins were also detected, indicating the antimicrobial ability of this isolate. The presence of genes encoding vitamins, including Riboflavin, Folate, and Biotin, also indicated the health-promoting ability of B106. Resistance of B106 to multiple antibiotics was evident from the presence of genes encoding resistance to chloramphenicol, ${\beta}$-lactams, Vancomycin, Tetracycline, fluoroquinolones, and aminoglycosides. The findings indicate the significance of B. clausii B106 administration during antibiotic treatment and its potential value as a probiotic strain to replenish the health-promoting and disease-preventing gut flora following antibiotic treatment.

Diversity of Bacillus thuringiensis Strains Isolated from Citrus Orchards in Spain and Evaluation of Their Insecticidal Activity Against Ceratitis capitata

  • J.C., Vidal-Quist;Castanera, P.;Gonzalez-Cabrera, J.
    • Journal of Microbiology and Biotechnology
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    • v.19 no.8
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    • pp.749-759
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    • 2009
  • A survey of Bacillus thuringiensis (Berliner) strains isolated from Spanish citrus orchards has been performed, and the strains were tested for insecticidal activity against the Mediterranean fruit fly Ceratitis capitata (Wiedemann), a key citrus pest in Spain. From a total of 150 environmental samples, 376 isolates were selected, recording a total B. thuringiensis index of 0.52. The collection was characterized by means of phase-contrast microscopy, SDS-PAGE, and PCR analysis with primer pairs detecting toxin genes cry1, cry2, cry3, cry4, cry5, cry7, cry8, cry9, cry10, cry11, cry12, cry14, cry17, cry19, cry21, cry27, cry39, cry44, cyt1, and cyt2. Diverse crystal inclusion morphologies were identified: bipyramidal (45%), round (40%), adhered to the spore (7%), small (5%), and irregular (3%). SDS-PAGE of spore-crystal preparations revealed 39 different electrophoresis patterns. All primer pairs used in PCR tests gave positive amplifications in strains of our collection, except for primers for detection of cry3, cry19, cry39, or cry44 genes. Strains containing cry1, cry2, cry4, and cry27 genes were the most abundant (48.7%, 46%, 11.2%, and 8.2% of the strains, respectively). Ten different genetic profiles were found, although a total of 109 strains did not amplify with the set of primers used. Screening for toxicity against C. capitata adults was performed using both spore-crystal and soluble fractions. Mortality levels were less than 30%. We have developed a large and diverse B. thuringiensis strain collection with huge potential to control several agricultural pests; however, further research is needed to find out Bt strains active against C. capitata.

Bacterial Community Monitoring of Commercial Kimchi Produced in Korea and China with Evidence of Bacilli Spore Formation during Fermentation (한국산 및 중국산 김치의 Bacteria 군집 분석 및 발효과정 중 Bacilli 포자 형성 규명)

  • An, Doohyun;Kim, Hye-Rim;Jeong, Do-Won;Caldwell, Jane M.;Lee, Jong-Hoon
    • Microbiology and Biotechnology Letters
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    • v.42 no.2
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    • pp.121-130
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    • 2014
  • Terminal Restriction Fragment Length Polymorphism (T-RFLP) analysis was adopted to explore rapid differentiation in the diversity and dynamics of bacteria in kimchi made in Korea and China for future application in kimchi origin discrimination. T-RFLP analysis supported the reproducible and rapid detection of major lactic acid bacteria known to be involved in kimchi fermentation. The taxonomic resolution level of this T-RFLP analysis was between the species and genus level, but was not specific enough for the detection of a bacterium found only in one origin, either Korea or China. The bacterial community structure successions in kimchi samples from Korea and China analyzed by T-RFLP analysis occurred with a similar pattern. Bacillus spp. which were not detected in the early microbial studies of kimchi were constantly detected until the late fermentation stage of kimchi in our T-RFLP analysis and their existence was proved by culture-based identification. Additionally, sporulation of Bacillus spp. during kimchi fermentation was discovered.

Analysis genetic diversity of Plasmodiophora brassicae using RFLP and RAPD(oral)

  • Heo, Seung-Hwan;Jang, Chang-Soon;Lee, Hyoun-Kyoung;Lee, Woo-Chung;Jang, Se-Jeong;Kim, Hong-Gi
    • Proceedings of the Korean Society of Plant Pathology Conference
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    • 2003.10a
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    • pp.112.1-112
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    • 2003
  • Genetic diversity of Plasmodiophora brassicae from major chinese cabbage cultivating areas in Korea was analyzed by using PCR-RFLP and RAPD. Single spores of P brassicae isolated from galls of club root made induce lesion on chinese cabbage successfully. The PCR-RFLP and RAPD by primers PbITS, URP 3, 6 and OPA 7 revealed that single spore isolates showed various DNA polymorphisms among them unrelated geographic origins. These results indicate that P. brassicae population in Korea showed genetic difference among them. This study could be facilitate to identify genetic characteristics ofP. brassicae based on DNA polymorphisms between single spore isolates and to get basic information which can be used to advanced resistance breeding against club root of chinese cabbage.

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Activity of Essential Oils Against Bacillus subtilis Spores

  • Lawrence, Hayley A.;Palombo, Enzo A.
    • Journal of Microbiology and Biotechnology
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    • v.19 no.12
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    • pp.1590-1595
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    • 2009
  • Alternative methods for controlling bacterial endospore contamination are desired in a range of industries and applications. Attention has recently turned to natural products, such as essential oils, which have sporicidal activity. In this study, a selection of essential oils was investigated to identify those with activity against Bacillus subtilis spores. Spores were exposed to 13 essential oils, and surviving spores were enumerated. Cardamom, tea tree, and juniper leaf oils were the most effective, reducing the number of viable spores by 3 logs at concentrations above 1%. Sporicidal activity was enhanced at high temperatures ($60^{\circ}C$) or longer exposure times (up to 1 week). Gas chromatography-mass spectrometry analysis identified the components of the active essential oils. However, none of the major oil components exhibited equivalent activity to the whole oils. The fact that oil components, either alone or in combination, did not show the same level of sporicidal activity as the complete oils suggested that minor components may be involved, or that these act synergistically with major components. Scanning electron microscopy was used to examine spores after exposure to essential oils and suggested that leakage of spore contents was the likely mode of sporicidal action. Our data have shown that essential oils exert sporicidal activity and may be useful in applications where bacterial spore reduction is desired.

Citrate Production by Sexually Compatible Strains of Saccharomycopsis lipolytica (Saccharomycopsis lipolytica의 성적 화합성 균체에 의한 시트르산 생산)

  • Gum, Cho-Seok;Masayoshi Matsuoka;Shuichi Aiba
    • Microbiology and Biotechnology Letters
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    • v.13 no.3
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    • pp.179-184
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    • 1985
  • Sexually compatible heterothallic haploids and diploids therefrom of Saccharomycopsis lipolytica were compared with respect to production. Diploids constructed through mating were confirmed by random spore analysis, whereas those constructed through protoplast fusion were confirmed by haploidization. ATCC 44601 and IFO 1209 produced larger amount of citrate and isocitrate than IFO 1550 and IFO 1551. A mode of citrate production by diploids was intermediate of the parental haploid strains. The specific activities of citrate synthase and isocitrate lyase in IFO 1550 and IFO 1551 were higher than those in ATCC 44601 and IFO 1209, indicating little correlation between citrate production and specific activities of these enzymes.

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Immunological Analysis of Antigenic Variation of Bacillus thuringiensis subsp. sotto during Sporulation and Crystallization

  • Cho, Jae Min;Gi Bum Nam;Soon Bok Hong;Myung Hwan Cho
    • Journal of Microbiology and Biotechnology
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    • v.5 no.6
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    • pp.359-363
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    • 1995
  • The antigenic variation of B. thuringiensis subsp. satto have been investigated for 120 hours during sporulation and crystallization by using SDS-PAGE and Western blot. Most antigens of a vegetative cell were found to disappear as it was in sporulation and crystallization, but protein antigens of 46, 29, 27, and 21 kDa continued to be expressed. The new protein bands of 293, 138, 119, 75, and 68 kDa appeared on days 2 through 5 in modified GYS medium. They were thought to be involved in sporulation and crystallization. The protein of 138 kDa was found to be a major protein of both crystal and spore. The expression patterns were immunologically analyzed by Western blot. The polyclonal antisera against the intact crystal showed strong immunoreactivity to proteins with molecular masses of 293, 138, 68, and 46 kDa. The polyclonal antisera against the spore recognized proteins of 293, 138, 68, and 46 kDa. Both crystals and spores appeared to express the common protein antigens.

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Isolation and Identification of an acidoduric Streptomyces sp. from Forest Soil (산림토양으로 부터 내산성 streptomyces sp. 균주의 분리 및 동정)

  • 김재헌;송도한
    • Korean Journal of Microbiology
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    • v.25 no.3
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    • pp.238-243
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    • 1987
  • In this study, an acidoduric Streptomyces strain was isolated and identified from acidic forest soil around Dankook University, Cheonan Campus. This isolated strain had rod-shaped, smooth, non-motile spore and the shape of spore chain was compact spiral. This structure appeared similar to the sporangium of the genus Streptosporangium but this strain proved to be a Streptomyces strain by an electron microscopic study and cell wall analysis. This strain showed a best growth on neutral medium, was also able to grow on the acidic media of pH 4.0 and pH 5.0. The color determination of this strain on various agar media and other physiological tests were carried out by ISP-methods. From these results, the isolated strain was considered to be Streptomyces mirabilis.

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