virus-vectors
Virus-vectors are organisms, typically insects such as aphids, whiteflies, or thrips, that transmit plant viruses from infected to healthy plants during feeding. Understanding these transmission pathways is critical for plant science because the vector-virus relationship often determines how rapidly a disease spreads through crops and natural plant populations. Research into virus-vector interactions informs the development of pest management strategies and resistant plant varieties aimed at reducing viral disease outbreaks.
open_in_new WikipediaPubMed · 2026-05-04
Researchers engineered a modified CRISPR gene-editing tool that can be delivered into plants using potyviruses — the largest family of plant RNA viruses — by redesigning one component to avoid genetic conflicts with the virus's own reading instructions. This expands which crops can be rapidly gene-edited without permanently inserting foreign DNA.
A re-engineered Cas9 guide RNA scaffold with all stop codons removed across all three reading frames allowed stable expression inside the potyviral genome for the first time.
The tobacco etch virus-derived vector edited all four alleles of the target gene in Nicotiana benthamiana, producing a visually confirmed white-leaf phenotype and heritable edits in progeny.
The vector was successfully demonstrated in tomato, suggesting the approach may generalize across the ~200 species in the Potyvirus genus.
