Improving Plants with a Tool Borrowed from Birds

Caltech researchers have adapted a genetic trick from zebra finches to revolutionize plant engineering. The team used the R-two retrotransposon—a naturally occurring genetic element found in birds—to build a DNA-insertion system for plants that's roughly thirty times more efficient than CRISPR-based methods, particularly for inserting multiple genes simultaneously. The breakthrough solves a persistent problem in agricultural biotechnology: previous approaches could achieve either precision or efficiency, but rarely both. After testing variants from different animal species, the researchers found the zebra finch version most effective. Nature Biotechnology published their findings this week. The advance could enable crops engineered for heat, drought, and disease resistance—increasingly important as climate change threatens global food security.

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