RBCS — Nicotiana attenuata

Summary

A4A49_16384 (RBCS) in Nicotiana attenuata encodes a small subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO) and is annotated with RuBisCO activity. This gene is associated with the reductive pentose-phosphate cycle, photorespiration, nonphotochemical quenching, xanthophyll cycle, chloroplast fission, protein import, shoot morphogenesis, de-etiolation, regulation of photosynthesis, folate biosynthesis, transcription by RNA polymerase II, nucleosome assembly, autotrophy, calcium signaling, alkaloid anabolism, and protein synthesis, and localizes to the plasmodesma. It is linked to traits including rubisco content, photosynthetic rate, quantum yield, chlorophyll content, water use efficiency, transpiration rate, stomatal resistance, photochemical quenching, specific leaf weight, leaf weight, plastochron, and stem elongation. Studies of related genes in other species link the family to seedling vigor, plant height, leaf angle, leaf senescence, fruit color, sugar and protein content, and aphid and virus responses.