CCR — Sorghum bicolor

Summary

SORBI_3004G340300 (SbCCR) encodes a NAD-dependent epimerase/dehydratase domain-containing protein with cinnamoyl-CoA reductase, flavanone 4-reductase, and dihydroflavanol 4-reductase activities, acting on CH-OH groups with NAD or NADP as acceptor. This sorghum gene on chromosome 4 is associated with lignin, anthocyanin, and phenylpropanoid anabolism, as well as starch and sucrose metabolism, green leaf volatile biosynthesis, and circadian rhythm. It is linked to responses to cold and defense, and associated with traits including photosynthetic rate, grain filling period, and IAA content. Associations with lignin content, saccharification yield, plant growth, male sterility, secondary cell wall morphology, and stress responses (cold, drought, salt) have been reported. Studies of related genes in other species link the CCR family to lignin accumulation, cell wall degradability, disease resistance, and biomass yield traits.