Bernard Eve, Guéguen Céline
Department of Chemistry, Université de Sherbrooke, Sherbrooke, QC, Canada.
Front Plant Sci. 2023 May 9;14:1099375. doi: 10.3389/fpls.2023.1099375. eCollection 2023.
Metal presence in the aquatic ecosystem has increased and diversified over the last decades due to anthropogenic sources. These contaminants cause abiotic stress on living organisms that lead to the production of oxidizing molecules. Phenolic compounds are part of the defense mechanisms countering metal toxicity. In this study, the production of phenolic compounds by under three different metal stressors (i.e. cadmium, copper, or cobalt) at sub-lethal concentration was assessed using an untargeted metabolomic approach by mass spectrometry combined with neuronal network analysis (i.e. ). The metal stress had a greater impact on molecular diversity than on the number of phenolic compounds. The prevalence of sulfur- and nitrogen-rich phenolic compounds were found in Cd- and Cu-amended cultures. Together these results confirm the impact of metallic stress on phenolic compounds production, which could be utilized to assess the metal contamination in natural waters.
在过去几十年中，由于人为来源，水生生态系统中金属的存在增加且种类多样。这些污染物对生物造成非生物胁迫，导致氧化分子的产生。酚类化合物是对抗金属毒性的防御机制的一部分。在本研究中，通过质谱联用神经网络分析（即）的非靶向代谢组学方法，评估了在亚致死浓度下三种不同金属应激源（即镉、铜或钴）作用下酚类化合物的产生情况。金属胁迫对分子多样性的影响大于对酚类化合物数量的影响。在镉和铜处理的培养物中发现了富含硫和氮的酚类化合物。这些结果共同证实了金属胁迫对酚类化合物产生的影响，可用于评估天然水体中的金属污染。
