可在现场部署的CRISPR-Cas变体,用于快速在现场检测植物病原体
Himanshu Saini1, Jyoti Yadav2, Sharad Pandey3
1School of Agriculture, Dev Bhoomi Uttarakhand University, Dehradun, Uttarakhand, 248007, India.
概括
标准化的CRISPR-Cas诊断工作流程使得植物病原体的快速,现场部署的检测成为可能. 这些测试使用Cas12a和Cas13a,为有效的植物疾病管理提供高灵敏度.
科学领域:
- 农业科学 农业科学
- 分子生物学分子生物学
- 生物技术是生物技术.
背景情况:
- 有效的植物疾病管理依赖于快速的,可在现场部署的诊断.
- 克里斯普尔-卡斯系统提供敏感和可编程的病原体检测,但缺乏用于现场使用的标准化工作流程.
- 现有的方法往往耗时,不适合在现场应用.
研究的目的:
- 开发和展示可实施的CRISPR-Cas诊断协议,以快速地在现场检测主要植物病原体.
- 为CRISPR-Cas诊断的现场应用提供标准化的工作流程.
- 解决阻碍基于CRISPR的植物病原体检测现场部署的实际挑战.
主要方法:
- 开发了三种现场准备的CRISPR-Cas测试:DNA病原体的RPA-Cas12a侧流,RNA病毒的Cas13aRT-RPA和无放大的Cas12a电化学生物传感器.
- 包括详细的协议,涵盖样品制备,试剂配方,化和故障排除.
- 使用Cas12a,Cas13a和微型Cas变种来检测病原体.
主要成果:
- 在所有平台上,在20-45分钟内达到1-100副本μL-1的检测极限.
- 已证明的分析灵敏度与PCR可比,但测试时间显著缩短.
- 成功解决了实践限制,如样品抑制剂,试剂稳定性和现场实施的生物安全性.
结论:
- 标准化的CRISPR-Cas工作流程为植物健康监测提供了可重复的,可在现场部署的工具.
- 这些测试可以快速检测疾病,改善现场植物疾病管理.
- 在CRISPR诊断方面的进步转化为农业应用的实际解决方案.
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