Agrobiodiversity, pangenomes and the future of food

Comparing commonly grown species and native varieties is a winning strategy for making the former more resilient and the latter more productive.

You all know tomatoes and potatoes. African eggplants, maybe not—but when ripe, they turn red just like tomatoes. The lulo, for its part, is an orange fruit with citrusy notes, which is why in Ecuador it’s called naranjilla, or “little orange.” The Andean pepino, on the other hand, has juicy flesh that makes it resemble a melon. Their sizes, colors, and flavors may vary, but all of these plants belong to the same taxonomic group. In fact, they represent some of the species sequenced to produce a remarkable collection of related genomes—remarkable because it aims to span the entire Solanum genus.

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From chili pepper to hot tomato?

this image shows jalapeño peppers (a cultivated variety of capsicum annuum) credit emmanuel rezende naves

Chili peppers have happily entered our kitchens with their capsaicinoid content, since Cristoforo Colombo brought then back from Central America. Capsicum species however are labour-intensive and difficult to grow. They are also notoriously recalcitrant to biotechnological intervention. Tomatoes are much handier in comparison. The Capsicum and Solanum clades split at least 19 Mya ago but comparative genomics has revealed that tomatoes retain all the necessary genes for pungency. Why not to harness CRISPR power to turn tomatoes into capsaicinoid biofactories then? Continue reading