Fig. 6

Expression profiles of the jujube AP2/ERF, WRKY, bZIP and NAC genes in two cultivars. DZCK, ‘Dongzao’ treated at 4 °C; DZA: ‘Dongzao’ treated at − 10 °C; DZB: ‘Dongzao’ treated at − 20 °C; DZC: ‘Dongzao’ treated at − 30 °C; DZD: ‘Dongzao’ treated at − 40 °C; JSCK: ‘Jinsixiaozao’ treated at 4 °C; JSA: ‘Jinsixiaozao’ treated at − 10 °C; JSB: ‘Jinsixiaozao’ treated at − 20 °C; JSC: ‘Jinsixiaozao’ treated at − 30 °C; JSD: ‘Jinsixiaozao’ treated at − 40 °C.Data were normalized based on the mean expression value of each gene in all samples analysed. Red and green boxes indicate high and low expression levels, respectively, for each gene