Science Friday Scientists Identify Genes For Tomato And Eggplant Size
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May 20, 2025 Dr. Michael Schatz, a professor of computational biology and oncology at Johns Hopkins University, dives into the genetic world of tomatoes and eggplants. He reveals how researchers have mapped the genomes of these nightshades to locate genes that dictate their size and flavor. With CRISPR gene editing, they are creating bigger fruits while maintaining taste. The conversation also touches on the shift from traditional breeding to modern genetic techniques and the balance between innovation and public safety in genetically modified crops.
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Genes Control Fruit Size
- Scientists identified genes controlling tomato and eggplant size by mapping genomes of 22 nightshade varieties.
- CRISPR gene editing enabled growing bigger fruits without losing flavor.
Tomato Genome Size Insight
- Tomato genome is about one billion bases, moderately sized compared to human and wheat genomes.
- Its moderate size makes it well suited for genetic studies and modifications.
African Eggplant Description
- African eggplant looks like a pumpkin on a stick and grows in Central Africa and South America.
- It’s a close genetic relative of tomato, useful for comparative genetic studies.