NQR — Lactuca sativa

Summary

LsNQR (gene symbol NQR) on chromosome 1 of garden lettuce (Lactuca sativa) encodes a protein with FMN reductase-like and flavoprotein-like domains that exhibits NADPH dehydrogenase (quinone) and NADH dehydrogenase (quinone) activities, binding FMN. The gene is associated with hydrogen peroxide biosynthetic process, metabolic burst, and seed germination, and its product localises to the chloroplast stroma, cytosol, and plasmalemma. LsNQR is associated with respiration rate and photosynthetic rate. Studies of related genes in other species link the family to traits including leaf dry weight, chilling stress response, leaf necrosis, bacterial disease response, drought tolerance, salt response, oxidative stress response, net photosynthetic rate, water use efficiency, chlorophyll content, anthocyanin and flavonoid content, sugar and protein content, fruit size, root branching and length, stomatal resistance and opening, meristem identity, nitrate uptake, and quantum yield.