CCR — Zea mays

Summary

ZmCCR (ZM00001EB041120) on maize chromosome 1 encodes a cinnamoyl-CoA reductase (EC 1.2.1.44) with oxidoreductase activity acting on CH-OH groups using NAD or NADP as acceptor, and also exhibits flavanone 4-reductase and dihydroflavanol 4-reductase activities. The protein belongs to the NAD(P)-dependent dehydratase/epimerase family. This gene is associated with lignin metabolism and cell wall assembly, and has been linked to numerous agronomic traits including grain yield, plant height, stem strength, brittle culm, cob length and diameter, biomass yield, forage yield, grain filling period, starch content, cellulose content, and cold tolerance. It is also linked to photosynthetic rate, transpiration rate, stomatal resistance, sodium content, proline content, IAA content, heterosis, and salt tolerance. Associations with lignin content, secondary cell wall morphology, saccharification yield, male sterility, senescence, and plant growth have been reported.