Researchers used a virus-based CRISPR system to precisely edit the gatekeeper enzyme HMGR in petunias and lettuce, effectively unlocking a natural metabolic “brake” that restricts scent and nutrient production. By fine-tuning this regulatory control rather than disabling the gene entirely, they enabled plants to channel more energy into producing aromatic compounds and health-promoting antioxidants. The result was more vigorous growth, stronger floral fragrance, and enhanced nutritional value. Importantly, because no foreign DNA was introduced, this transgene-free approach offers a powerful new framework for developing higher-quality, nutrient-enriched crops through precision gene editing.

The drought-tolerant shrub affectionately known as Old Man Saltbush is mostly used as stock fodder, but can also be added to salads or cooking and has been enoyed by Indigenous Australian for thousands of years. Now, early research suggests it could be a healthy and sustainable alternative many more of us should be eating.