Field-parallel six-sample microfluidic detection of plant viruses via raffinose-assisted one-pot LAMP-CRISPR/Cas12b.
Wang J, Yang W, Fang J, Xu H, Li J
Crispr
Viral diseases can wipe out entire crops before farmers even know they're present, and catching them early in the field — rather than weeks later after a lab sends results — could save harvests that stock grocery store shelves.
Researchers built a handheld kit that detects plant viruses directly in a field or garden, no laboratory required. It works by using a two-step molecular process: first copying any viral genetic material present in a sample, then using a CRISPR 'molecular scissors' system to flag a positive result on a simple test strip. In field trials, it got the right answer every single time compared to standard lab testing.
Key Findings
The ALERT platform detected plant viruses with sensitivity comparable to conventional RT-PCR, the current gold-standard lab method.
Field testing showed 100% diagnostic agreement with RT-PCR results across all samples tested.
The portable device can process six samples simultaneously in the field using an integrated microfluidic chip and a compact metal incubator.
chevron_right Technical Summary
Scientists developed a portable device that can simultaneously test six plant samples for viral diseases in the field, using CRISPR gene-editing technology combined with a rapid amplification method. It matches the accuracy of laboratory-grade testing without needing a lab.
Abstract Preview
Plant viral diseases threaten food security globally. Rapid, accurate and early detection of viral pathogens is critical for proactive surveillance and effective control. This study aimed to develo...
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