Gene-Edited Grains Could Fix Their Own Nitrogen
The approach is research-stage, with commercial products likely no earlier than the next decade after field testing.
Updated on Nov. 3, 2026 in Biotech
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Bayer has obtained a commercial license for a University of California, Davis technology that edits grain DNA so plant roots can partner with soil bacteria that convert nitrogen from the air into a usable form. The technology is research-stage; no commercial product has shipped.
Why it matters
Corn, wheat, and rice cannot fix nitrogen naturally and rely on synthetic nitrogen fertilizer, while soybeans and other legumes do so on their own. Supply disruptions tied to the Iran war have raised fertilizer prices, giving the approach added urgency.
The UC Davis work edited wheat with CRISPR so it releases more apigenin through its roots, a demonstrated greenhouse result rather than a field-tested one. The licensed figures cover the market size and import dependence, not measured nitrogen yields in farm conditions.
The players
Bayer
A German life sciences company whose crop science division pairs seed traits with crop protection and fertilizer products.
Switch Bioworks
A Stanford spinout engineering root-dwelling microbes to supply plants with nitrogen.
University of California, Davis
A University of California campus whose plant science researchers developed the CRISPR-based root-signaling method.
The details
The approach edits grain DNA so that plant roots can form partnerships with soil bacteria. Using CRISPR, a gene-editing tool that makes precise changes to DNA, UC Davis researchers got wheat to release more apigenin, a plant compound that signals to bacteria, through its roots. That signal coaxes the bacteria into fixing nitrogen, pulling it from the air and converting it into a form plants can absorb.
Timeline
This year: EU lawmakers approved a framework for gene-edited crops.
October: Bayer partnered with Stanford spinout Switch Bioworks to engineer root-dwelling microbes.
Next decade: earliest expected arrival of commercial products.
The Tech Race
The effort sits alongside Bayer's partnership with Switch Bioworks, which is engineering the microbial side of the same nitrogen problem. Competing routes target the plant side and the soil side of one shared bottleneck.
Products are likely to arrive no earlier than the next decade, so California farmers and consumers will not see this in fertilizer or grain prices soon. The next step is testing the technology outside the greenhouse, and the timeline for that step has not been announced.
The takeaway
Watch for the first field trial of the nitrogen-fixing wheat outside the greenhouse, which is the next milestone the work points toward. Its results will show whether the root-signaling approach holds up under real soil conditions.
Further reading
For related coverage, see Biotech on the California edition, where gene-editing and agricultural research are tracked.
Source note: This article includes information reported by Genetic Literacy Project.
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Should governments support gene-edited crops that reduce synthetic fertilizer use?
