Genome-wide identification of the ARRs gene family in tobacco (Nicotiana tabacum)

文献类型： 外文期刊

第一作者： Lv, Jing

作者： Lv, Jing;Dai, Chang-bo;Wang, Wei-feng;Sun, Yu-he;Lv, Jing;Dai, Chang-bo;Wang, Wei-feng;Sun, Yu-he;Lv, Jing

作者机构：

关键词： ARR gene family; Tobacco; Expression profile; Cytokinin signaling; Development of axillary buds

期刊名称：GENES & GENOMICS （ 影响因子：1.188； 五年影响因子：0.937 ）

ISSN： 1976-9571

年卷期： 2021 年 43 卷 6 期

页码：

收录情况： SCI

摘要： Background The growth of axillary buds determines the shoot branching and morphology of plants, and its initiation and development are regulated by a series of hormonal signals, such as cytokinin. Arabidopsis response regulators (ARRs) can regulate the growth and development, disease resistance and stress resistance of plants by participating in cytokinin signaling. Objective To explore the distribution and expression pattern of ARR members in tobacco. Methods The identification, isoelectric points, molecular weights, protein subcellular localization prediction, multiple sequence alignment, phylogenetic analysis, protein motifs and structures, chromosome distributions of deduced ARR proteins were conducted. The gene expression profiling of various tissues in response to topping, low temperature and drought were analyzed by RNA-seq and qRT-PCR. Results 59 ARR genes from cultivated tobacco (Nicotiana tabacum) were identified, namely NtARRs, including 21 type A NtARRs and 38 type B NtARRs. The 59 NtARRs were expressed mainly in all organs except the fruits. Some representative NtARRs may participate in axillary bud initiation and development, as well as in stress resistance through cytokinin signal transduction. Conclusion Understanding the roles of NtARRs in the molecular mechanisms responsible for axillary bud growth and stress tolerance could aid in targeted breeding in crops.

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