染色体尺度组装揭示了鸟类白内障虫寄生虫Eimeria tenella中的局部结构变异
Subodh K Srivastava1, Carolyn Parker2, Celia N O'Brien2
1USDA-ARS Animal Parasitic Diseases Laboratory, Beltsville Agricultural Research Center, BARC-East Building 1040, 10300 Baltimore Ave., Beltsville, MD, 20705, USA. subodh.k.srivastava@usda.gov.
Scientific reports
|December 21, 2023
概括
一种新的染色体尺度组合Eimeria tenella (APU2菌株) 提供了关于家禽菌病的见解. 这种基因组资源有助于理解寄生虫的进化和开发针对Eimeria tenella感染的新疗法.
科学领域:
- 基因组学就是基因组学.
- 寄生虫学的寄生虫学
- 兽医科学 兽医科学 兽医科学
背景情况:
- 埃梅里亚天氏菌 (Eimeria tenella) 是一种重要的病原体,在家禽中引起白内障菌病.
- 准确的基因组数据对于理解Eimeria tenella生物学和开发控制策略至关重要.
- 以前的基因组组合可能缺乏用于详细结构变异分析所需的连续性.
研究的目的:
- 为了生成一个高质量的染色体规模的基因组组装Eimeria tenella菌株APU2.2.
- 为了确定Eimeria tenella菌株之间的结构变异和遗传差异.
- 为推进药物发现和针对菌病的疫苗开发提供基础.
主要方法:
- 混合基因组组装使用牛津纳米孔技术 (ONT) 和Illumina Next-Seq数据与MaSuRCA管道.
- 使用AUGUSTUS的基因预测和使用BUSCO的基因组完整性评估.
- 比较基因组学分析单核酸多态性 (SNP) 和E. tenella菌株之间的序列异质性.
主要成果:
- 获得了Eimeria tenella APU2的连续51.34 Mb的染色体尺度组合.
- 预测了8060个基因,由BUSCO证实99%的基因组完整性.
- 与霍顿菌株的比较显示了62,905个高强度差异,包括45,322个SNP,并确定了特定染色体区域的序列异质性.
结论:
- 染色体水平的组合提供了对Eimeria tenella基因组结构和演变的增强洞察力.
- 鉴定菌株之间的遗传变异可以为有针对性的干预提供信息.
- 预计这一基因组资源将加速新型抗菌药物和疫苗的开发.
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