directed-evolution
Directed evolution is a protein engineering technique that applies iterative rounds of mutagenesis and selection to rapidly evolve proteins or nucleic acids toward desired functional properties. In plant science, this approach enables researchers to engineer enzymes, transcription factors, and other plant proteins with enhanced or novel capabilities — such as improved stress tolerance, altered metabolic activity, or greater herbicide resistance — without requiring complete knowledge of protein structure. This makes it a powerful tool for accelerating the development of crops and plant systems tailored to specific agricultural or research goals.
open_in_new WikipediaPubMed · 2026-04-01
Scientists developed GRAPE, a new platform that speeds up the process of evolving and improving plant proteins directly inside living plants. By harnessing a natural viral replication mechanism, GRAPE achieves the kind of rapid protein engineering previously only possible in microbes, while keeping the plant's own biology intact.
GRAPE uses geminivirus rolling-circle replication to amplify genetic variants inside living plants, achieving microbe-like throughput that was previously impossible in plant systems.
The platform directly links protein function to replicon amplification, meaning only useful protein variants get copied and selected — creating a built-in evolutionary filter.
GRAPE preserves native plant signaling and defense pathways, ensuring evolved proteins are tested in a biologically realistic plant environment rather than an artificial lab setting.