Genome-wide identification of the TIFY gene family in tobacco and expression analysis in response to Ralstonia solanacearum infection

文献类型： 外文期刊

第一作者： Zhang, Huifen

作者： Zhang, Huifen;Liu, Zhengwen;Geng, Ruimei;Ren, Min;Cheng, Lirui;Liu, Dan;Jiang, Caihong;Wen, Liuying;Xiao, Zhiliang;Yang, Aiguo;Zhang, Huifen

作者机构：

关键词： TIFY gene family; Genome-wide identification; Bacterial wilt; Tobacco; VIGS

期刊名称：GENOMICS （ 影响因子：4.4； 五年影响因子：4.2 ）

ISSN： 0888-7543

年卷期： 2024 年 116 卷 3 期

页码：

收录情况： SCI

摘要： The TIFY gene family plays an essential role in plant development and abiotic and biotic stress responses. In this study, genome-wide identification of TIFY members in tobacco and their expression pattern analysis in response to Ralstonia solanacearum infection were performed. A total of 33 TIFY genes were identified, including the TIFY, PPD, ZIM&ZML and JAZ subfamilies. Promoter analysis results indicated that a quantity of light-response, drought-response, SA-response and JA-response cis-elements exist in promoter regions. The TIFY gene family exhibited expansion and possessed gene redundancy resulting from tobacco ploidy change. In addition, most NtTIFYs equivalently expressed in roots, stems and leaves, while NtTIFY1, NtTIFY4, NtTIFY18 and NtTIFY30 preferentially expressed in roots. The JAZ III clade showed significant expression changes after inoculation with R. solanacearum, and the expression of NtTIFY7 in resistant varieties, compared with susceptible varieties, was more stably induced. Furthermore, NtTIFY7-silenced plants, compared with the control plants, were more susceptible to bacterial wilt. These results lay a foundation for exploring the evolutionary history of TIFY gene family and revealing gene function of NtTIFYs in tobacco bacterial wilt resistance.

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