• Title/Summary/Keyword: 생물학적 분해

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LD-based Algorithm for Haplotype Block Partitioning (Haplotype 블록 분할을 위한 LD 기반 알고리즘)

  • 나경락;김상준;여상수;김성권
    • Proceedings of the Korean Information Science Society Conference
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    • 2004.04b
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    • pp.331-333
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    • 2004

  • 본 연구는 Haplotype 데이터에서 나타나는 별개의 Haplotype의 수를 최소화하는 블록으로 분할하는 방법을 제안한다. Multi-population case인 Haplotype 데이터를 분석하기 위해 패턴의 개수를 최소한으로 줄이는 볼록 분할 방법은 전산학적인 최적해의 의미를 가지게 되며, 이와 더불어 생물학적인 의미를 가지는 블록 경계를 찾기 위해 ｜D'｜ 을 계산하고 LD를 분석하였다 분석된 LD는 블록 분할 알고리즘에서 블록 결정 함수로 사용하였으며, 이에 대한 검정은 X$^2$-test를 통해 이루어졌다. 많은 Sample로 구성된 Haplotype 데이터로부터 평균 패턴의 개수를 최소화하고 긴 블록 길이를 가지는 블록 분할의 결과를 얻었다.

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A simple screening method using lignoceullulose biodegradation for selecting effective breeding strains in Agaricus bisporus (리그노셀룰로오스 생물학적 분해를 이용한 간단한 양송이 육종효율 우수 균주 선발)

  • Oh, Youn-Lee;Nam, Youn-Keol;Jang, Kab-Yeul;Kong, Won-Sik;Oh, Min ji;Im, Ji-Hoon
    • Journal of Mushroom
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    • v.15 no.3
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    • pp.134-138
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    • 2017

  • The white button mushroom, Agaricus bisporus, is commercially the fifth most important edible mushroom, accounting for the production of 9,732 tons of mushrooms in Korea in 2015. The genus Agaricus has been known for its potential to degrade lignocellulosic materials. Chemical analyses carried out during the cultivation of A. bisporus indicated that the cellulose, hemicellulose, and lignin fractions were changed preferentially for both vegetative growth and sexual reproduction. We screened A. bisporus strains for effective biodegradation through extracellular enzyme activity using cellulase, xylanase, and ligninolytic enzymes. The enzyme biodegradations were conducted as follows: mycelia of collected strains were incubated in 0.5% CMC-MMP (malt-mops-peptone), 0.5 Xylan-MMP, and 0.5% lignin-MMP media for 14 days. Incubated mycelia were stained with 0.2% trypan blue. Eighteen strains were divided into 8 groups based on different extracellular enzyme activity in MMP media. These strains were then incubated in sterilized compost and compost media for 20 days to identify correlations between mycelial growth in compost media and extracellular enzyme activity. In this study, the coefficient of determination was the highest between mycelial growth in compost media and ligninolytic enzyme activity. It is suggested that comparison with ligninolytic enzyme activity of the tested strains is a simple method of screening for rapid mycelial growth in compost to select good mother strains for the breeding of A. bisporus.

  • https://doi.org/10.14480/JM.2017.15.3.134 인용 PDF KSCI