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fnr1 and cry1 mutants are insensitive to N levels. (A) 28-d-old WT Columbia (Col-0) plants and the fnr1 and cry1 mutant derivatives grown in MS medium under different N conditions. (B) Flowering times of WT, fnr1, and cry1 plants grown in MS medium. Days to flowering and rosette leaf number were scored (mean ± SD; n ≥ 25 plants). blue, blue-light treatment; H Fe & S, high-Fe and S (0.4 mM FeSO4) treatment.
