Scientists turned red lettuce green and something surprising happened
Scientists have used genome editing to disable a gene in red lettuce, turning the plant green while increasing levels of other beneficial flavonoids. This discovery suggests a potential method for customizing the nutritional content of produce without affecting growth.
Why it matters
This technique offers a pathway to bioengineer crops with enhanced health-promoting compounds, potentially improving food quality.
The red color of red leaf lettuce comes from anthocyanins, a group of polyphenol pigments that have attracted attention for their antioxidant properties. Plants produce anthocyanins through a series of enzyme driven reactions that begin with the amino acid phenylalanine. Along the way, the pathway generates a variety of flavonoids, a broad category of plant compounds that serve many functions before some are eventually converted into anthocyanins.
The article presents scientific findings neutrally without taking a stance on genetic modification.
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