NQR — Lactuca sativa

Summary

LsNQR (gene symbol NQR) on chromosome 1 of garden lettuce (Lactuca sativa) encodes a protein with FMN_Rdtase-like and flavoprotein-like domains that exhibits NADPH dehydrogenase (quinone) and NADH dehydrogenase (quinone) (non-electrogenic) activities, and binds FMN. The gene is associated with H2O2 biosynthetic process, metabolic burst, and seed germination, and its product localises to the chloroplast stroma, cytosol, and plasmalemma. LsNQR has been connected to respiration rate and photosynthetic rate. Studies of related genes in other species link the family to 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, meristem identity, stomatal resistance and opening, nitrate uptake, and quantum yield.