SAB1 — Lactuca sativa

Summary

LsSAB1, also known as SAB1 or UVR8, is a garden lettuce (Lactuca sativa) gene on chromosome 3 that encodes a protein containing a Reg_chr_condens domain and an RCC1/BLIP-II domain. The gene is associated with photomorphogenesis, pigmentation, and response to stress, and its product localises to the cytoplasm. LsSAB1 has been linked to shoot fresh weight, photosynthetic rate, stomatal resistance, and anthocyanin content. It is also connected to seed germination and ABA sensitivity. Studies of related genes in other species link the family to quantum yield, days to flowering, seed maturation, plant height, and abscisic acid sensitivity, though these associations are not yet established for lettuce.