GLK1 — Solanum lycopersicum

Summary

SOLYC10G008160.3, designated GLK1 and also known as SlGLK2, SlGPRI1, and GPRI2, encodes a GLK1/2-like transcription factor with sequence-specific DNA binding, transcription cis-regulatory region binding, and protein homodimerization activity. In tomato, GLK2 is associated with chloroplast development, fruit chlorophyll content, green shoulder formation, soluble solid content, tocopherol content, and overall fruit quality. The gene is linked to numerous traits including fruit color, carotenoid and lycopene content, fruit weight and shape, sugar content, nitrogen content, leaf angle, plant height, seed dormancy, root and seedling development, salt and oxidative stress responses, and auxin and abscisic acid sensitivity. It is also associated with chloroplast biogenesis, chlorophyll accumulation, resistance to Botrytis cinerea, and leaf senescence. The protein localizes to the nucleus, cytosol, and cytoplasm.