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말 분변 내 마이크로바이옴 다양성 조사
Diversity Census of Fecal Microbiome in Horses 원문보기

Journal of animal reproduction and biotechnology = 한국동물생명공학회지, v.34 no.3, 2019년, pp.157 - 165  

이슬 (국립축산과학원 영양생리팀) ,  김민석 (전남대학교 농업생명과학대학 동물자원학부)

Abstract AI-Helper 아이콘AI-Helper

This study was conducted to analyze the diversity census of fecal microbiome in horses using meta-analysis of equine 16S rRNA gene sequences that are available in the Ribosomal Database Project (RDP; Release 11, Update 5). The search terms used were "horse feces (or faeces)" and "equine feces (or fa...

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문제 정의

  • 이러한 여러 개개의 연구를 통합한 메타분석(meta-analysis)은 말의 이상적인 후장발효를 통한 소화율 향상 및 미생물 배양을 위한 중요한 기초자료를 제공할 수 있지만 아직까지 수행된 바가 없다. 따라서, 본 연구에서는 RDP 데이터베이스에서 얻어지는 모든 말 분변 내 미생물에 대한 시퀀스를 메타분석하여 마이크로바이옴 다양성을 통합적으로 조사하였다.
  • 본 연구는 말 분변으로부터 마이크로바이옴 다양성 조사를 위해 Sanger sequencing 기법으로 분석된 말 분변 유래 16S rRNA gene sequence를 메타분석하였다. Bacteria의 경우 phylum 수준에서 Firmicutes가 가장 우점하였고, Bacteroidetes가 두번째로 우점하였다.
  • 반면에 domain Archaea는 98 sequences가 모두 1개의 phylum Euryarchaeota으로 분류되었다. 본 연구에서는 메타분석을 사용해 배양이 불가능한 수많은 말 분변 유래 미생물의 계통학적 분류를 처음으로 체계적으로 정리하였다.

가설 설정

  • Pseudoramibacter는 신경 감염과 관련이 있다고 보고되고 있지만(Finegold 등, 2004), 말 분변에서의 역할이 분명하지 않다. 1개의 sequence만 존재하였기 때문에 우연에 의해 분류될 가능성도 있을 것이다. Family Clostridiales_ Incertae Sedis VIII (n = 15)는 genus Anaerovorax (n = 11)와 genus Mogibacterium (n = 4)가 속한다.
본문요약 정보가 도움이 되었나요?

질의응답

핵심어 질문 논문에서 추출한 답변
미생물 발효 관점에서 말의 정의는? 말은 대장과 맹장에서 미생물 발효가 일어나는 후장발효동물 (hindgut fermenters)이며, 비반추초식동물(non-ruminant herbivorous animals)로 분류된다. 말의 후장(hindgut)에서는 미생물에 의해 섬유소가 분해되고, 휘발성지방산(volatile fatty acid)이 생성된다.
16S rRNA gene의 이용가치는? 16S rRNA gene은 bacteria, archaea에 있어 생물체의 계통 발생학적 관계를 밝히는 phylogenetic marker로서 이용될 수 있다(Kim 등, 2017). 본 연구에서는 말 분변 내 미생물의 다양성을 분석하기 위해 RDP 데이터베이스에 등록된 말 분변 유래 16S rRNA gene sequence를 이용하였다.
Pseudoramibacter의 역할이 분명하지 않은 이유는? Pseudoramibacter는 신경 감염과 관련이 있다고 보고되고 있지만(Finegold 등, 2004), 말 분변에서의 역할이 분명하지 않다. 1개의 sequence만 존재하였기 때문에 우연에 의해 분류될 가능성도 있을 것이다. Family Clostridiales_ Incertae Sedis VIII (n = 15)는 genus Anaerovorax (n = 11)와 genus Mogibacterium (n = 4)가 속한다.
질의응답 정보가 도움이 되었나요?

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