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프로바이오틱스 안전성 평가를 위한 항생제 저항성 유전자의 생물정보학적 분석법 비교
곽우리,김병용 한국유산균프로바이오틱스학회 2022 Current Topic in Lactic Acid Bacteria and Probioti Vol.8 No.1
The detection of the genome-based antibiotic resistance gene is an essential analysis process for the purpose of verifying the safety of probiotic strains, including lactic acid bacteria. In this study, 4 analysis platforms (AMRFinderPlus, staramr, rgi, ABRicate) were used for cross-comparison of 782 genomes corresponding to 19 kinds of probiotic species notified as functional foods. As a result of the analysis, the relatively fewest number of antibiotic resistance genes were detected in strains belonging to the order Lactobacillales, and antibiotic resistance genes were detected in 322 genomes used in the case of 2 types of Enterococcus genus. In addition, the presence and type of antibiotic resistance gene detection showed a lot of difference even for the same genome sequence depending on the database and analysis algorithm used by the analysis platform. These results can be confused in evaluating the potential for transmission of antibiotic resistance genes inherent in specific lactic acid bacteria and predicting potential risks that may occur in the future. Accordingly, it is judged that the antibiotic resistance gene-related analysis criteria need to be established more clearly and specifically in the safety evaluation of probiotic bacteria.
Australian Soil Classification: an Review
현병근,손연규,조현준,정강호,최정원,정석재,곽우리,김운선,홍세은 한국토양비료학회 2016 한국토양비료학회지 Vol.50 No.4
As a means of improving Korean Soil Classification System, we have reviewed Australian Soil Classification System by comparing Soil Taxonomy and FAO/WRB Classification System. Australian Soil Classification System is composed of 14 of Order, 87 of Sub-order, 556 of Great-group, 2,451 of Sub-group, and 7,276 of Family. Interestingly, soil order has the Anthroposols which is not classified with Soil Taxonomy, and the classification for some of soils is based on soil texture abruption horizon and soil structure. Seven of 14 soil orders are classified with an old version based on soil color rather than morphological characteristics. The distribution scale of Australian soil order is the largest in Tenosols, and followed by Kandosols, Rudosols, Sodosols and Vertisols in Australia.
정재훈,김권도,유동안,이찬호,강정선,조경진,강대경,곽우리,윤숙희,손화선,김희발,조서애 한국유전학회 2018 Genes & Genomics Vol.40 No.2
Lactobacillus plantarum is one of the widely-used probiotics and there have been a large number of advanced researches on the effectiveness of this species. However, the difference between previously reported plantarum strains, and the source of genomic variation among the strains were not clearly specified. In order to understand further on the molecular basis of L. plantarum on Korean traditional fermentation, we isolated the L. plantarum GB-LP4 from Korean fermented vegetable and conducted whole genome assembly. With comparative genomics approach, we identified the candidate genes that are expected to have undergone evolutionary acceleration. These genes have been reported to associate with the maintaining homeostasis, which are generally known to overcome instability in external environment including low pH or high osmotic pressure. Here, our results provide an evolutionary relationship between L. plantarum species and elucidate the candidate genes that play a pivotal role in evolutionary acceleration of GB-LP4 in high osmolarity environment. This study may provide guidance for further studies on L. plantarum.
현병근(Byung-Keun Hyun),손연규(Yeon-Kyu Sonn),조현준(Hyun-Jun Cho),장용선(Yeon-Sun Zhang),정강호(Kangho Jung),최정원(Jung-won Choi),정석재(Sug-Jae Jung),곽우리(Woo-Ri Kwak),김운순(Woon-Sun Kim),홍세은(Se-Eun Hong) 한국토양비료학회 2016 한국토양비료학회 학술발표회 초록집 Vol.2016 No.3
토지생산성의 향상과 토지의 합리적 이용을 위해 지역 내에 분포하는 토양의 종류를 체계적으로 분류하며, 분포토양의 특성 등을 조사하는 것이 토양조사의 역할이다(Ryu, 2000). 토양도(soil map)란 토양조사 결과를 바탕으로 토양의 분포상태를 지도형태로 만든 것을 말한다. 토양도는 다양한 이용자에게 토지이용방법, 토양관리상 유의점 등을 제공하고 있다. 따라서, 토양도를 가지고 있다는 것은 해당 나라 전국토의 토양자원을 합리적으로 이용하기 위한 기초자료를 구축했다고 볼 수 있다. 일본의 토양분류체계은 지역마다, 연구자 마다 차이가 있어서 통일된 분류체계를 가지지 못했었다. 그러나, 최근 미국의 Soil Taxonomy 분류체계와 유사한 포괄적 분류체계에 대해서 토양분류전문가들이 모여 1차 시안이 발표하였다. 따라서, 이에 대한 일본의 토양분류체계를 검토하고, Soil Taxonomy, FAO/WRB 분류체계와 비교 검토한 결과를 살펴보면 다음과 같다. 일본의 토양분류체계는 토양군(Soil Great Group) 10, 군(Soil Group) 27, 아군(Soil Subgroup) 116, 통군(Soil Series Group) 381로 구성되어 있다. 일본의 토양목은 Soil Taxonomy에 없는 조성토대군(Man-made soils)이 있으며, 일부토양은 토색을 기준으로 하여 분류체계를 만들었다. 예를 들면 암적색토대군, 적황색토대군, 갈색토대군 등이다. 토양대군 중에서 토양군을 가장 많이 가지고 있는 것은 구로보쿠토대군 6, 저지토대군 5, 미숙토대군 4개 등이다.