通过单细胞转录组学揭示的恐龙体宿主中隐藏的综合体和体感染
Elizabeth C Cooney1, Brian S Leander1,2, Patrick J Keeling1
1Department of Botany, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
The ISME journal
|September 26, 2024
概括
研究人员发现了以前未知的寄生虫类恐龙鞭虫感染海洋藻类. 单细胞测序揭示了新的血统和宿主-寄生虫关系,进步了我们对这些生态重要微生物的理解.
科学领域:
- 海洋生物学 海洋生物学
- 微生物学 微生物学
- 寄生虫学的寄生虫学
背景情况:
- 自由生活的恐龙鞭毛动物经常受到密切相关的寄生虫恐龙鞭毛动物的感染,包括海洋藻类和虫类.
- 这些丰富而生态重要的寄生虫很难研究,因为在直接观察和培养方面存在挑战.
- 现有的知识严重依赖于环境18SrRNA基因序列,大多数物种缺乏基因组规模的分子数据.
研究的目的:
- 为了识别和表征以前未知的寄生虫恐龙鞭状体感染海洋宿主.
- 研究这些寄生虫的进化关系和宿主关系.
- 为了证明单细胞转录基因组测序对研究不能培养的微生物的有用性.
主要方法:
- 收集受感染的自由活体恐龙体宿主细胞.
- 使用光显微镜识别寄生虫.
- 宿主和寄生虫的单细胞转录组测序.
- 使用192个基因对宿主和寄生虫同类的植物遗传学分析.
主要成果:
- 几种寄生虫类恐龙鞭毛虫被成功地从受感染的宿主细胞中识别和测序.
- 单细胞转录组学为宿主和寄生虫提供了高覆盖率.
- 遗传学分析揭示了一种寄生虫属于一个新的血统姐妹的perkinsids.
- 其他已识别的寄生虫被归类为海洋膜体的辛迪尼亚类.
- 以前没有联系的寄生虫亲属与特定的宿主有关.
结论:
- 单细胞分离和转录组测序是研究隐藏的寄生虫恐龙鞭状体的有效方法.
- 这种方法提供了关键的基因组数据,并揭示了对寄生虫与宿主相互作用的新进化见解.
- 这项研究扩大了对海洋状藻类和状藻类多样性及其生态作用的知识.
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