PCdb: A comprehensive plant genome-editing database integrating sgRNA efficiency, off-target predictions, and epigenomic landscapes.
Wang F, Lu S, Zhu C, Yang L
Crispr
PubMedThe rice, wheat, and vegetables you eat could be made more nutritious, drought-resilient, or disease-resistant far more safely and quickly, because this database gives crop scientists a detailed map for making precise DNA edits without unintended side effects.
Imagine trying to edit one sentence in a billion-page book without smudging anything else — that's what plant gene editing feels like. Scientists have now built a giant, searchable library of nearly 4,400 tested 'molecular scissors' used in plants, recording exactly how well each one worked and where it might have cut in the wrong place. The library also notes what the DNA neighborhood looks like around each cut site, since the same scissors can behave very differently depending on how tightly the DNA is packed nearby.
Key Findings
PCdb contains 6,172 manually curated gene-editing records from 2,132 publications, covering 4,320 unique guide sequences across nine major crop and model plant species.
The database catalogs over 6.1 million predicted off-target sites, enabling researchers to assess unintended editing risks before running experiments.
Integrating epigenomic data — DNA methylation, chromatin accessibility, and histone modifications — reveals that the local DNA environment significantly shapes whether a gene edit succeeds or misfires.
chevron_right Technical Summary
Scientists have built PCdb, a large online database that organizes thousands of real-world plant gene-editing experiments, helping researchers design more accurate CRISPR tools that cut the right gene without accidentally damaging others.
Abstract Preview
CRISPR-Cas-based genome editing has transformed plant biotechnology by enabling precise genomic modifications for crop improvement and functional genomics. The success of these applications hinges ...
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