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- W2502641455 abstract "본 연구에서는 상수리림 부식층으로부터 방향족 화합물(리그닌 polymers) 분해세균을 분리하여 계통학적 특성을 밝히고, pyrosequencing 계통분석을 통해 부식층 내 주요 세균군집과의 상관관계를 검토하고자 하였다. 방향족 화합물(p-anisic acid, benzoic acid, ferulic acid 및 p-coumaric acid)을 이용하는 세균 42균주를 분리하여 16S rRNA 계통해석한 결과, Rhizobium, Sphingomonas, Burkhorlderia, Pseudomonas 계통군으로 확인되었다. 이들 방향족화합물 분해세균 중 Burkhorlderia 계통군은 전체 분리균주의 83%로 높은 비율을 차지하였다. 차세대 염기서열 분석법(pyrosequencing)을 이용하여 부식층시료로부터 7,862개의 16S rRNA 유전자 염기서열을 얻었으며, 유의성 97% 수준에서 1,821 OTUs와 다양성 지수 6.76가 확인되었다. 상수리림 부식층 내 세균군집은 총 22개 문(phylum)으로 구성되었으며, 주요 세균군집으로 확인된 <TEX>${beta}$</TEX>-proteobacteria 계통군은 Burkholderia, Polaromonas, Ralstoria, Zoogloea, Variovorax를 포함하는 15개 속으로 세분류 되었다. 이들 세균 중 약 50%가 Burkholderia 속으로 확인되었다. 상수리림 부식층 내 우점군집으로 밝혀진 Burkholderia 계통군은 산림 생태계에서 리그닌 분해 대사 과정에 중요한 미생물생태학적 역할을 수행하는 것으로 판단되었다. In this study, we isolated aromatic compounds (lignin polymers) utilizing bacteria in humus layer of oak forest and investigated phylogenetic characteristics and correlation with major bacterial populations in the humus layer by pyrosequencing. Forty-two isolates using aromatic compounds such as p-anisic acid, benzoic acid, ferulic acid and p-coumaric acid were isolated and phylogentic analyses based on 16S rRNA gene sequences showed that the isolates belonged to the genus Rhizobium, Sphingomonas, Burkhorlderia, and Pseudomonas. Among these, Burkhorlderia species which belong to Betaproteobacteria class occupied 83% among the isolates. The bacterial populations in humus layer of oak forest were characterized by next generation pyrosequencing based on 16S rRNA gene sequences. The humus sample produced 7,862 reads, 1,821 OTUs and 6.76 variability index with 97% of significance level, respectively. Bacterial populations consist of 22 phyla and Betaproteobacteria were the major phylum consisting of 15 genera including Burkholderia, Polaromonas, Ralstoria, Zoogloea, and Variovorax. Approximately fifty percentage of them was Burkholderia. Burkholderia as the majority of population in the humus was considered to play a role in degrading lignin in humus layer of oak forest." @default.
- W2502641455 created "2016-08-23" @default.
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- W2502641455 date "2016-06-30" @default.
- W2502641455 modified "2023-10-17" @default.
- W2502641455 title "Phylogenetic characteristics of bacterial populations and isolation of aromatic compounds utilizing bacteria from humus layer of oak forest" @default.
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- W2502641455 doi "https://doi.org/10.7845/kjm.2016.6028" @default.
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