Regulation of Nitrate Reductase Activity by Nitrate during Light-Dark Transition in Detached Oat Leaves

摘要

In oat (Avena sativaL. cv. Suregrain) leaf segments, light-dark modulation of nitrate reductase (NR) activity could be observed only when segments were kept in–NO3conditions. We present here evidence that nitrate would regulate NR activity by modulating the phosphorylation status of the enzym