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首页> 外文期刊>Journal of Experimental Botany >Xenobiotic sensing and signalling in higher plants.
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Xenobiotic sensing and signalling in higher plants.

机译：高等植物中的异种生物传感和信号传递。

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Anthropogenic changes and chemical pollution confront plant communities with various xenobiotic compounds or combinations of xenobiotics, involving chemical structures that are at least partially novel for plant species. Plant responses to chemical challenges and stimuli are usually characterized by the approaches of toxicology, ecotoxicology, and stress physiology. Development of transcriptomics and proteomics analysis has demonstrated the importance of modifications to gene expression in plant responses to xenobiotics. It has emerged that xenobiotic effects could involve not only biochemical and physiological disruption, but also the disruption of signalling pathways. Moreover, mutations affecting sensing and signalling pathways result in modifications of responses to xenobiotics, thus confirming interference or crosstalk between xenobiotic effects and signalling pathways. Some of these changes at gene expression, regulation and signalling levels suggest various mechanisms of xenobiotic sensing in higher plants, in accordance with xenobiotic-sensing mechanisms that have been characterized in other phyla (yeast, invertebrates, vertebrates). In higher plants, such sensing systems are difficult to identify, even though different lines of evidence, involving mutant studies, transcription factor analysis, or comparative studies, point to their existence. It remains difficult to distinguish between the hypothesis of direct xenobiotic sensing and indirect sensing of xenobiotic-related modifications. However, future characterization of xenobiotic sensing and signalling in higher plants is likely to be a key element for determining the tolerance and remediation capacities of plant species. This characterization will also be of interest for understanding evolutionary dynamics of stress adaptation and mechanisms of adaptation to novel stressors.
机译：人为改变和化学污染使植物群落面临各种异种生物化合物或异种生物的组合，这些化学结构至少对植物物种而言是部分新颖的。植物对化学挑战和刺激的反应通常以毒理学，生态毒理学和逆境生理学为特征。转录组学和蛋白质组学分析的发展已经证明了修饰植物对异种生物的反应中基因表达的重要性。已经发现，异种生物作用不仅可能涉及生物化学和生理学破坏，还可能涉及信号传导途径的破坏。而且，影响感测和信号传导途径的突变导致对异源生物的应答的改变，从而证实了异源生物作用与信号传导途径之间的干扰或串扰。这些基因表达，调控和信号传导水平的变化表明，根据其他门类（酵母，无脊椎动物，脊椎动物）中表征的异质生物传感机制，高等植物中异质生物传感的机制多种多样。在高等植物中，即使涉及突变研究，转录因子分析或比较研究的不同证据表明它们的存在，也很难识别出这种传感系统。直接异物感测和异物相关修饰的间接感测之间的区别仍然难以区分。然而，高等植物中异源生物感测和信号转导的未来表征可能是确定植物物种的耐受性和修复能力的关键因素。该特征对于理解压力适应的进化动力学和对新型压力源的适应机制也将是有意义的。

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