RCA — Cucumis sativus

Summary

CSA_6G188680 (RCA, also known as CsRCA, RCA1, or CsRCA1) in cucumber (Cucumis sativus) on chromosome 6 encodes a rubisco activator protein, a member of the AAA+ ATPase family with a RuBisCO_activase_AAA_helical domain and ATP hydrolase activity. The gene is associated with regulation of photosynthesis, photoprotection, photorespiration, and the ascorbate-glutathione cycle, and localizes to the chloroplast stroma, thylakoid, and envelope. It has been linked to traits including net photosynthetic rate, chlorophyll content, quantum yield, water use efficiency, biomass yield, plant height, stem diameter, and responses to chilling and high temperature stress, as well as phenotypes such as photosynthetic efficiency, leaf senescence, cell death, and heat tolerance. Studies of related genes in other species connect the RCA family to rubisco activation, thermotolerance of photosynthesis, and seed yield.