CAM — Triticum turgidum subsp. durum

Summary

TRITD2BV1G156390 (TtCAM) on durum wheat chromosome 2B encodes a calmodulin-binding protein of the CBP60 family with transcription coactivator activity, sequence-specific DNA binding, and calmodulin binding. It is associated with CAM photosynthesis, regulation of salicylic acid biosynthesis, calcium signaling, defense response, oxidative stress response, photomorphogenesis, root meristem growth, and chlorophyll fluorescence. The gene is linked to numerous traits including seed weight, water use efficiency, photosynthetic rate, stomatal resistance, flowering time, root morphology, leaf growth, anthocyanin content, abscisic acid sensitivity, and anther, pistil, and ovary development. It localizes to the nucleus, cytosol, cytoplasm, plasmalemma, and plant-type vacuole. Studies of related genes in other species connect the CBP60 family to plant immunity, disease resistance, organ size, seed size, and abscisic acid responsiveness.