Transcriptomic insights into the regulatory networks of chilling-induced early flower in tobacco (Nicotiana tabacum L.)

IF 2.6 3区 生物学 Q2 PLANT SCIENCES
Guoyun Xu, Wuxia Guo, Zunqiang Li, Chen Wang, Yalong Xu, Jingjing Jin, Huina Zhou, Shulin Deng
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引用次数: 1

Abstract

ABSTRACT Appropriate timing of flowering is pivotal for tobacco, while chilling stress occurring at the seedling stage often undesirably leads to early flowering. However, the potential mechanism underlying chilling-induced early flowering remains unknown. Here, transcriptome sequencing was performed in tobacco with or without chilling at both seedling and budding stages. Chilling affected the expression of numerous genes at the seedling stage, while these dramatic expression changes were largely eliminated at the budding stage. A small number of genes related to metabolism, flower development, and stress tolerance continued to keep their altered expression patterns from the seedling stage to the budding stage. Many potential flowering-related genes involved in flowering pathways were identified and over half of them were differentially expressed. Functional analysis revealed that the down-regulation of NbXTH22 rendered tobacco less sensitive to chilling-induced early flowering. These results provide valuable resources for the investigation of flowering regulatory mechanisms and contribute to the genetic improvement of crops.
烟草(Nicotiana tabacum L.)低温诱导早花调控网络的转录组学研究
摘要适当的开花时间对烟草来说至关重要,而幼苗期发生的低温胁迫往往会导致提前开花。然而,低温诱导早花的潜在机制仍然未知。在这里,转录组测序是在有或没有冷藏的烟草幼苗和出芽阶段进行的。低温在幼苗期影响了许多基因的表达,而这些显著的表达变化在萌芽期基本上被消除了。从幼苗期到萌芽期,少数与代谢、花发育和耐逆性相关的基因继续保持其改变的表达模式。许多潜在的与开花途径有关的基因被鉴定出来,其中超过一半的基因被差异表达。功能分析表明,NbXTH22的下调使烟草对低温诱导的早花不太敏感。这些结果为研究开花调控机制提供了宝贵的资源,有助于作物的遗传改良。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
5.30
自引率
6.20%
发文量
69
审稿时长
>12 weeks
期刊介绍: Journal of Plant Interactions aims to represent a common platform for those scientists interested in publishing and reading research articles in the field of plant interactions and will cover most plant interactions with the surrounding environment.
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