Looking for perfect heat and lots of it? Gene engineers in Brazil think they might be able to create eye-watering tomatoes.
Hot stuff: Even though chili peppers and tomato plants diverged from a common ancestor millions of years ago, tomatoes still possess the genetic pathway needed to make capsaicinoids, the molecules that make chilis hot.
Now, Agustin Zsögön from the Federal University of Viçosa in Brazil writes in the journal Trends in Plant Science that gene-editing tools like CRISPR could turn it back on.
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