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使用CRISPR-Dx扫描片检测到环境DNA中的临灭绝的两动物

Flurin Leugger^1,2, Michel Schmidlin^1,2, Martina Lüthi^1,2

¹Ecosystems and Landscape Evolution, Department of Environmental Systems Science, Institute of Terrestrial Ecosystems, ETH Zürich, Zürich, Switzerland.

Molecular ecology resources

|August 17, 2024

概括

使用环境DNA (eDNA) 和CRISPR诊断的新扩展扫描方法提供了高效的生物多样性监测. 这种方法比传统方法检测到更多的物种,包括难以捉摸的物种,有助于保护危物种的保护工作.

科学领域:

生态生态学生态生态学
保护生物学保护生物学
分子生物学分子生物学

背景情况:

生物多样性监测对于保护至关重要,但目前的方法,如eDNA元编码和qPCR是劳动密集的.
克里斯普尔诊断技术 (Dx) 是有前途的,但受物种特定的原料要求限制,阻碍了广泛的生物多样性评估.
开发多功能和高效的监测工具对于应对不断升级的生物多样性危机至关重要.

研究的目的:

为了证明设计特定物种的CRISPR-Dx测试的可行性,使用在metabarcoding片段内使用通用开头,称为"ampliscanning".
评估广域规划对瑞士两动物生物多样性监测的有效性,包括危物种.
在物种检测和效率方面,将广观测的性能与传统监测方法进行比较.

主要方法:

在18个瑞士两动物物种的物种特异性CRISPR-Dx测定中,使用在一个短的元编码片段 (ampliscanning) 中设置的通用初始化器进行体设计.
在9个池地点的eDNA样本上实地测试Ampliscanning方法,针对9个选定的两动物物种.
将广视扫描检测结果与在同一地点进行的传统监测 (视觉和声学调查) 数据进行比较.

主要成果:

透扫描成功检测到目标两动物物种,在整个研究景观中患病率各不相同.
一次使用广观测的访问每次发现更多的物种 (25个物种/地点组合),而不是三次传统的监测访问 (12个物种/地点组合).
在检测难以捉摸的物种和以前未经记录的种群方面,AMPLISCANNING特别有效,超过了传统方法.

结论:

综合了eDNA,CRISPR-Dx和通用原始器的AMPLISCANNING,为大规模生物多样性监测提供了一个高效和多功能工具.
与传统方法相比,该方法大大减少了采样和分析工作量,使其适合监测多种危物种.
广观测提供了有价值的数据,以告知保护措施,并更有效地应对生物多样性危机.

关键词:

这就是CRISPR-Dx.在Cas13中,Cas13是Cas13中的一个.生物多样性监测生物多样性监测保护保护保护临灭绝的两动物环境 DNA DNA 环境 DNA

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