TY - RPRT TI - Decrease of Nitrate Reductase Activity in Spinach Leaves during a Light-Dark Transition. AU - B Riens AU - H W Heldt PY - 1992 DO - 10.1104/pp.98.2.573 UR - https://pubmed.ncbi.nlm.nih.gov/16668679/ ID - 16668679 ER -