从驼中分离的第一个Corynebacterium pseudotuberculosis基因组的重新测序和表征
Enrico Giovanelli Tacconi Gimenez1, Marcus Vinicius Canário Viana1, Thiago de Jesus Sousa2
1Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
PeerJ
|February 5, 2024
概括
这项研究比较了Corynebacterium pseudotuberculosis菌株Cp162的基因组组合,没有发现与驼热带主义相关的独特基因. 需要进一步的研究,以了解这个重要的动物传染病原体的宿主适应性.
科学领域:
- 细菌学 细菌学是一门学科.
- 基因组学就是基因组学.
- 进行比较基因组学.
背景情况:
- 科里尼细菌伪结核病是一种致动物性病原体,在哺乳动物中引起疾病,包括驼.
- 无论是biovar equi还是ovis菌株都能感染驼,但只有来自biovar equi的Cp162具有测序的基因组.
- 对比基因组学对于识别C. pseudotuberculosis的宿主适应特征至关重要.
研究的目的:
- 为了比较C. pseudotuberculosis菌株Cp162.2.的三个基因组组合的质量.
- 通过比较基因组分析,研究Cp162菌株的独特基因组特征.
- 为了确定与驼宿主适应相关的潜在基因.
主要方法:
- 基因组组合比较使用来自SOLiD v3 Plus,IonTorrent PGM和Illumina HiSeq 2500平台的数据,与光学地图集成.
- 对Cp162菌株的基因组比较分析与其他129种C. pseudotuberculosis基因组进行比较.
- 鉴定和分析毒性基因,利法抗性基因和独特/缺失基因.
主要成果:
- 基因组组装的改进包括增加编码序列和减少伪基因,并纠正结构变异.
- 鉴定了30个毒性基因,但没有一个与驼宿主有独特的关联.
- 菌株Cp162具有四个独家存在的基因 (两个转换酶,两个截断的蛋白质) 并缺少其他菌株中发现的三种基因 (lysG,NUDIX域蛋白,假设蛋白).
- 所有分析的基因组,包括Cp162,都携带了对利法的抗药基因rpob2和rbpA.
结论:
- 在C. pseudotuberculosis菌株Cp162中没有发现任何独特的基因,这可以解释驼宿主的热带性.
- 建议进行更多涉及大量基因组和全基因组关联研究 (GWAS) 的进一步研究,以阐明驼宿主适应.
- 该研究强调了高质量的基因组组件对于准确的比较基因组分析的重要性.
更多相关视频
09:44Characterization of a Pathogenic Escherichia coli Strain Derived from Oreochromis spp. Farms Using Whole-Genome Sequencing
Published on: December 23, 2022
2.2K
05:34Author Spotlight: Development of an Enhanced Protocol for Rapid and Accurate Isolation of Campylobacter from Food Products
Published on: February 23, 2024
1.9K
相关概念视频
01:29Modern Molecular Taxonomy
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
01:30Bacterial Phylum Actinobacteria
Coryneform bacteria are gram-positive, aerobic, nonmotile rods that exhibit irregular, club-shaped, or V-shaped arrangements. Their V-shape results from snapping division, where the inner cell wall layer forms the cross-wall, while the outer layer remains intact until it ruptures on one side, causing the daughter cells to bend away.The primary genera are Corynebacterium and Arthrobacter. Corynebacterium includes diverse species, ranging from saprophytes to pathogens like Corynebacterium...