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一组线虫rRNAcistron数据库和一个初始评估工具,以实现更灵活和全面的元编码

Eléonore Charrier¹, Rebecca Chen¹, Noelle Thundathil¹

¹Faculty of Veterinary Medicine, Host Parasite Interaction Program, University of Calgary, Calgary, Alberta, Canada.

Molecular ecology resources

|May 11, 2024

概括

新的rRNA基因数据库和初始分析工具增强了线虫甲基编码. 这些资源有助于识别各种线虫群体,包括寄生虫和自由生活物种,使用先进的测序技术.

科学领域:

* 分子生物学 * 分子生物学
* 生物信息学是一门学科.
* 生态学 * 生态学

背景情况:

* 内部转录间隔器2 (ITS-2) 核糖体RNA (rRNA) 标记物对线虫元编码有价值,但在基因分辨率和参考序列可用性方面存在局限性.
*因不完整的参考数据而难以对复杂的线虫群体进行元编码,例如野生动物寄生虫和自由生活的土壤和水生物种.
*目前的rRNA基因标记物不能完全解决所有线虫的遗传关系,影响社区的准确评估.

研究的目的:

* 开发针对线虫的综合rRNAcistron数据库,以提高元编码的准确性.
* 创建一个工具 (PrimerTC) 来评估线虫rRNA标记物中的原料保护和分类学覆盖范围.
* 为了确定最佳的原始集,以在线虫元编码中提供广泛的分类学覆盖.

主要方法:

*利用标记DB生成了四个不同的rRNA基数据库:18SrRNA,28SrRNA,ITS-1和ITS-1_5.8S_ITS-2.
*编译了数据库,包含数千种线虫物种的独特全长序列.
* 开发并应用了PrimerTC,以评估在生成的数据库中现有的rRNAcistron原始体的保存情况.

主要成果:

*生成了2645个 (18S),254个 (28S),13461个 (ITS-1) 和10107个 (ITS-1_5.8S_ITS-2) 独特序列的数据库,分别代表了1391,204,1837和1322个物种.
*比较分析显示了标记物之间的互补价值,Clades III,IV和V比Clades I和II更好地代表了它们.
* 18S rRNA 数据库提供了最广泛的分类学覆盖范围,而 ITS-1 数据库包含了最独特的序列; PrimerTC 识别了具有广泛分类学覆盖的初始集.

结论:

*开发的rRNA基因数据库和PrimerTC工具显著提升了线虫甲基编码能力.
*这些资源有助于使用各种测序平台对各种线虫群体进行更全面的社区分析.
* PrimerTC 是一个多功能网络应用程序,用于设计和评估任何遗传标记和分类群的PCR原料.

关键词:

在18S rRNA中.28S rRNA 是一个28S rRNA.ITS‐1_5.8S_ITS‐2 rRNARNA 它们是什么?没有生物组.超级编码元标段编码.线虫线虫在线虫线虫线虫

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