Identification of CoDREB Genes for Drought and Cold Tolerance in Camellia oleifera

DREB is a plant-specific transcription factor family that plays pleiotropic regulatory role in response to abiotic stresses such as drought and cold. In this study, we identified 51 genes of Camellia oleifera. These CoDREBs ranged from 88 518 amino acids (average/median 259/237 aa). The predicted molecular weights (MW) the CoDREB proteins 9.7 kDa 59.6 kDa, isoelectric points (pI) 4.62 10.44. A gene structure analysis showed 43/51 (84.3%) were intronless, number exons varied one three. Then, focused on terms plant cold acclimation. Under short-/long-term stress, CoDREB1.2/4.1/4.4/4.8/4.12/4.15/5.1/5.3/5.5/6.2 have different regulations long-term response, CoDREB1.4/2.5/4.6/4.1/6.3/6.5 specifically short term. Additionally, mild/severe followed by recovery, found may be involved complex drought-responsive network. CoDREB5.2 CoDREB6.5 are significantly up-regulated, participate regulation low-temperature C.