Ferric chelate reductase involved in iron uptake by shoot and leaf cells. May participate in the transport of electrons to a Fe(3+) ion via FAD and heme intermediates. 2 a Fe(II)-siderophore + H(+) + NAD(+) = 2 a Fe(III)-siderophore + NADH Expressed in shoots and leaves. Detected in cotyledons, stems, siliques, flowers, sepals, anther filaments and stigmas, but not in roots. Not expressed in germinating seeds. Expressed during cell or organ differentiation. Down-regulated in shoots by copper deficiency. Not regulated by iron availability. Light dependent expression. Belongs to the ferric reductase (FRE) family.