CCR — Sorghum bicolor

Summary

SORBI_3002G146000, designated SbCCR, encodes a cinnamoyl-CoA reductase (EC 1.2.1.44) with additional flavanone 4-reductase and dihydroflavanol 4-reductase activities, placing it in the NAD(P)-binding domain superfamily. In sorghum, this gene is associated with lignin, flavonoid, anthocyanin, and phenylpropanoid biosynthesis, as well as starch and sucrose metabolism, green leaf volatile production, circadian rhythm regulation, defense responses, and cold stress. It has been linked to photosynthetic rate, grain filling period, and IAA content. Associations with lignin content, saccharification yield, secondary cell wall morphology, coumarin and sinapoyl malate accumulation, plant growth, senescence, male sterility, etioplast and chloroplast development, leaf virescence, cold and drought responses, salt tolerance, and immunity have been reported. Studies of related genes in other species connect the family to cell wall degradability, disease resistance, stem physical properties, and abiotic stress tolerance.