Isolation and expression characterization of CBF2 in vitis amurensis with stress

Chang Dong, Jianmin Tao, Meng Zhang, Yang Qin, Zhiying Yu, Bailin Wang, Binhua Cai, Zhen Zhang

College of Horticulture, Nanjing Agricultural University, Nanjing, China.
Department of Horticulture, Heilongjiang Academy of Agricultural Science, Harbin, China.

DOI: 10.4236/as.2013.49062                

Abstract

The transcription factor VaCBF2, which interacts with C-repeat/DRE and its promoter, was isolated from Vitis amurensis. The VaCBF2 amino acid sequence contained a conserved AP2 domain of 56 amino acids and a potential nuclear localization sequence. The sequence of VaCBF2 showed a high level of homology with other CBF2 family members. Phylogenetic analysis showed that the amino acid sequences may be CBF2 proteins with evolutionary relationship. Quantitative reverse-transcription polymerase chain reaction analysis indicated that the expression of VaCBF2 gene in tissues (roots, stems, leaves, and petioles) was induced by low temperature, high salinity, and application of abscisic acid and salicylic acid in a time-dependent manner but to different extents in the cold-hardy V. amurensis and the less cold-hardy Vitis vinifera. The presence of cis-elements such as MYC and ABRE in VaCBF2 promoter further confirmed that this promoter was a component of the CBF transduction pathway involved in plant response to multiple stresses.

Keywords

vitis amurensis; Stress; CBF2; Expression

Conflicts of Interest

The authors declare no conflicts of interest.

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