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

生物 烟草 基因 腋芽 遗传学 拟南芥 细胞分裂素 基因表达谱 烟草 植物 基因表达 茄科 生长素 组织培养 突变体 体外
作者
Jing Lv,Changbo Dai,Weifeng Wang,Yuhe Sun
出处
期刊:Genes & Genomics [Springer Science+Business Media]
卷期号:43 (6): 601-612 被引量:5
标识
DOI:10.1007/s13258-021-01039-6
摘要

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. To explore the distribution and expression pattern of ARR members in tobacco. 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. 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. 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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