NQR — Daucus carota subsp. sativus

Summary

DCAR_022339 (symbol NQR, preferred name DcNQR) on carrot chromosome 6 encodes a NAD(P)H-dependent reductase with FMN binding, exhibiting NADPH and NADH dehydrogenase (quinone) activity. The protein localises to the chloroplast stroma, cytosol and plasmalemma, and is associated with the methylerythritol phosphate (MEP) pathway. In carrot, DcNQR has been linked to respiration rate and photosynthetic rate. Studies of related genes in other species connect the NQR family to a wide range of traits including leaf dry weight, chilling stress response, bacterial disease response, drought tolerance, salt response, oxidative stress response, root branching and length, fruit size, sugar and anthocyanin content, chlorophyll content, net photosynthetic rate, quantum yield, water use efficiency, stomatal resistance and opening, nitrate uptake, protein content, leaf colour and necrosis, pungency, and meristem identity.