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首页> 外文期刊>The New Phytologist >Transcriptome analysis of Arabidopsis roots treated with signaling compounds: a focus on signal transduction, metabolic regulation and secretion.
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Transcriptome analysis of Arabidopsis roots treated with signaling compounds: a focus on signal transduction, metabolic regulation and secretion.

机译：用信号传导化合物处理的拟南芥根的转录组分析：重点是信号转导，代谢调节和分泌。

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摘要

Gene expression in response to signaling molecules has been well studied in the leaves of the model plant species Arabidopsis thaliana. However, knowledge of gene expression and metabolic regulation at the root level is limited. Here, the signaling compounds salicylic acid (SA), methyl jasmonate (MeJA) and nitric oxide (NO) were applied exogenously to induce various defense responses in roots, and their effect was studied using a combination of genomic, molecular and biochemical approaches. Genes involved in defense signaling/activation, cellular redox state, metabolism, transcription factors and membrane transport were altered in expression following treatment with SA, MeJA and NO. In addition, it was found that SA-, MeJA- and NO-elicited roots increased the root exudation of phytochemicals compared with the roots of nontreated control plants. Transport systems likely to be involved in the root exudation of phytochemicals, including the MATE, ABC, MFS, amino acid, sugar and inorganic solute transporters, showed altered expression profiles in response to treatments. Overall, significant differences were found in the signaling compound-elicited expression profiles of genes in roots vs those in leaves. These differences could be correlated to the underground nature of roots and their exposure to higher microbial inoculum rates under natural conditions.
机译：在模型植物物种拟南芥（Arabidopsis thaliana）的叶子中已经对响应信号分子的基因表达进行了充分研究。但是，在根水平上对基因表达和代谢调控的知识是有限的。在这里，外源应用信号化合物水杨酸（SA），茉莉酸甲酯（MeJA）和一氧化氮（NO）诱导根部的各种防御反应，并结合基因组，分子和生化方法研究了它们的作用。 SA，MeJA和NO处理后，与防御信号/激活，细胞氧化还原状态，代谢，转录因子和膜转运有关的基因表达发生改变。另外，发现与未处理的对照植物的根相比，SA-，MeJA-和NO-引起的根增加了植物化学物质的根渗出。可能与植物化学物质的根部分泌物有关的转运系统，包括MATE，ABC，MFS，氨基酸，糖和无机溶质转运体，显示出响应于处理而改变的表达谱。总体而言，在根与叶中的基因之间的信号传导化合物诱导的基因表达谱中发现了显着差异。这些差异可能与根的地下特性及其在自然条件下暴露于较高微生物菌种接种率有关。

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