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Genome-wide analysis of the bZIP gene family in Chinese jujube (Ziziphus jujuba Mill.)

文献类型： 外文期刊

作者： Zhang, Yao 1 ; Gao, Weilin 1 ; Li, Hongtai 1 ; Wang, Yongkang 3 ; Li, Dengke 3 ; Xue, Chaoling 1 ; Liu, Zhiguo 4 ; Liu, M 1 ;

作者机构： 1.Hebei Agr Univ, Coll Life Sci, Baoding, Peoples R China

2.Hebei Agr Univ, Hebei Key Lab Plant Physiol & Mol Pathol, Baoding, Peoples R China

3.Shanxi Acad Agr Sci, Pomol Inst, Taigu, Peoples R China

4.Hebei Agr Univ, Res Ctr Chinese Jujube, Baoding, Peoples R China

关键词： ZjbZIPs; Chinese jujube; Tissue-specific expression; Fruit development; Phytoplasma; Abiotic stress; Protein-protein interaction

期刊名称：BMC GENOMICS （ 影响因子：3.969； 五年影响因子：4.478 ）

ISSN： 1471-2164

年卷期： 2020 年 21 卷 1 期

页码：

收录情况： SCI

摘要： Background Among several TF families unique to eukaryotes, the basic leucine zipper (bZIP) family is one of the most important. Chinese jujube (Ziziphus jujubaMill.) is a popular fruit tree species in Asia, and its fruits are rich in sugar, vitamin C and so on. Analysis of the bZIP gene family of jujube has not yet been reported. In this study,ZjbZIPs were identified firstly, their expression patterns were further studied in different tissues and in response to various abiotic and phytoplasma stresses, and their protein-protein interactions were also analyzed. Results At the whole genome level, 45ZjbZIPswere identified and classified into 14 classes. The members of each class of bZIP subfamily contain a specific conserved domain in addition to the core bZIP conserved domain, which may be related to its biological function. Relative Synonymous Codon Usage (RSCU) analysis displayed low values of NTA and NCG codons inZjbZIPs, which would be beneficial to increase the protein production and also indicated thatZjbZIPs were at a relative high methylation level. The paralogous and orthologous events occurred during the evolutionary process ofZjbZIPs. Thirty-four ZjbZIPs were mapped to but not evenly distributed among 10 pseudo- chromosomes. 30 ofZjbZIPgenes showed diverse tissue-specific expression in jujube and wild jujube trees, indicating that these genes may have multiple functions. SomeZjbZIPgenes were specifically analyzed and found to play important roles in the early stage of fruit development. Moreover, someZjbZIPs that respond to phytoplasma invasion and abiotic stress environmental conditions, such as salt and low temperature, were found. Based on homology comparisons, prediction analysis and yeast two-hybrid, a protein interaction network including 42 ZjbZIPs was constructed. Conclusions The bioinformatics analyses of 45ZjbZIPswere implemented systematically, and their expression profiles in jujube and wild jujube showed that many genes might play crucial roles during fruit ripening and in the response to phytoplasma and abiotic stresses. The protein interaction networks among ZjbZIPs could provide useful information for further functional studies.

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