Arabidopsis thaliana, a small flowering weed, has been central to plant biology for 50 years, helping scientists understand growth, hormones, and root development. Researchers at the Salk Institute have now created the first complete genetic atlas of Arabidopsis, mapping gene expression in 400,000 cells across all life stages. This publicly available resource offers new insights into plant development, cell types, and responses to stress and the environment.
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