从化品中分离出来的Bacillus cereus菌种中的基因组和表型多样性
Nadine Yossa1, Roma Adu-Osei2, Travis Canida3
1Food and Drug Administration/Human Foods Program/Office of Laboratory Operations and Applied Science, Office of Applied Microbiology and Technology, College Park, MD, 20740, USA. IreneNadine.Tchagou@fda.hhs.gov.
BMC microbiology
|December 19, 2025
概括
化品Bacillus cereus分离物表现出对抗微生物药物的多种耐药性,没有明显的特征将其与非化品菌株区分开来. 耐药性取决于基因构成和抗生素度.
科学领域:
- 微生物学 微生物学
- 基因组学就是基因组学.
- 抗微生物耐药性 抗微生物耐药性
背景情况:
- 谷菌对产品的安全性和质量构成风险.
- 对B. cereus化品分离物的基因组分析 (3A ES) 揭示了适应基因.
- 化品和非化品B. cereus菌株的比较研究.
研究的目的:
- 比较B. cereus菌株的基因型和表型耐药性.
- 研究从化品中分离出来的B. cereus的特征.
- 确定影响B. cereus.抗菌素耐药性的因素.
主要方法:
- 使用BTyper和BV-BRC (PATRIC) 进行全基因组测序和遗传学分析.
- 使用Vitek 2 Compact和表型微阵列进行抗生素和生物制剂耐药性的表型测试.
- 统计分析用于比较增长和阻力概况.
主要成果:
- BTyper将菌株分为基因组,其中B. pumilus作为异常值.
- 基因组分析确定了赋予抗生素和杀菌剂耐药性的基因.
- 观察到总体敏感性/耐药性表型的显著差异;3 A ES是最耐药的,ATCC 7061是最不耐药的.
- 化品和非化品分离物之间的平均生长/呼吸没有显著差异 (p=0.56).
结论:
- B. cereus 菌株表现出多样化的基因型和表型特征.
- 没有特定的特征可以区分化品B. cereus分离物和非化品分离物.
- 抗生素耐药性受到菌株的遗传耐药性武器库和抗生素度的影响.
相关概念视频
Applications of Molecular Taxonomy
472
Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...
472
Modern Molecular Taxonomy
543
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...
543
Genomic DNA in Prokaryotes
48.2K
The genome of most prokaryotic organisms consists of double-stranded DNA organized into one circular chromosome in a region of cytoplasm called the nucleoid. The chromosome is tightly wound, or supercoiled, for efficient storage. Prokaryotes also contain other circular pieces of DNA called plasmids. These plasmids are smaller than the chromosome and often carry genes that confer adaptive functions, such as antibiotic resistance.
Genomic Diversity in Bacteria
Although bacterial genomes are much...
Genomic Diversity in Bacteria
Although bacterial genomes are much...
48.2K


