Hornwort Protein Boosts Crop Photosynthesis
Analysis based on 8 articles · First reported Mar 05, 2026 · Last updated Mar 12, 2026
This breakthrough has the potential to significantly impact agricultural markets by enabling increased crop yields and reducing the environmental footprint of farming. While direct market effects are not immediate, the long-term implications for food production and biotechnology are substantial, potentially leading to new investment opportunities in agricultural science.
An international team of researchers from Boyce Thompson Institute, Cornell University, and the University of Edinburgh has discovered a molecular mechanism in hornworts that could dramatically boost photosynthetic efficiency in crops. They identified a protein component, RbcS-STAR, which modifies Rubisco (the enzyme responsible for carbon dioxide capture) to cluster into pyrenoid-like structures, making it more efficient. This discovery is significant because hornworts share a closer evolutionary history with crops than algae, whose similar CO2-concentrating mechanisms have been difficult to transfer. Experiments successfully demonstrated Rubisco clustering in a related hornwort species and in Arabidopsis, suggesting RbcS-STAR is a modular tool. While challenges remain in delivering CO2 to these clustered Rubisco, this finding represents a major step towards engineering more efficient food crops, potentially increasing yields and promoting sustainable agriculture.
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