CAM — Triticum turgidum subsp. durum

Summary

TRITD2AV1G190610, designated TtCAM on durum wheat chromosome 2A, encodes a calmodulin-binding protein belonging to the CBP60 family and exhibits transcription coactivator activity, sequence-specific DNA binding, and calmodulin binding. The gene is associated with CAM photosynthesis, regulation of salicylic acid biosynthesis, calcium signaling, defense responses, and oxidative stress responses. It has been linked to numerous agronomic traits including seed weight, water use efficiency, photosynthetic rate, stomatal resistance, flowering time, root morphology, leaf growth and development, anthocyanin content, and abscisic acid sensitivity. Additional associations include plant immunity, disease resistance, photomorphogenesis, organ growth, cell proliferation, and chloroplast proliferation. The protein localizes to the nucleus, cytosol, cytoplasm, plasmalemma, and plant-type vacuole. Studies of related genes in other species link the family to plant immunity, organ size, seed size, and abscisic acid responsiveness.