Science

Molecular architecture determines tomato plant resistance to its main pest

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 28/10/2026, 22:25:24 UTC.

Briefings

An international study identified that wild tomatoes possess greater resistance to the tomato leafminer than cultivated varieties due to the spatial structure of a plant defense molecule. Researchers found that altering just four amino acids in a single enzyme can change the molecule's structure and increase its toxicity against the pest, offering a pathway for developing resistant tomato varieties through gene editing.

Key points

• Wild tomatoes are more resistant to the tomato leafminer than cultivated varieties due to the spatial structure of a plant defense molecule.
• Altering four amino acids in a single enzyme is sufficient to change the molecule's structure and increase its toxicity against the pest.

Context

This research provides a molecular explanation for natural resistance differences between tomato species, suggesting that targeted enzyme modification could enable the creation of genetically resistant tomato crops.

Limitations

The study relies on a single international study; specific geographic locations, exact dates of field trials, or long-term resistance data are not provided in the evidence.

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