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Metabolomics Reveals Antioxidant Stress Responses of Wheat (Triticum aestivum L.) Exposed to Chlorinated Organophosphate Esters.
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2020-05-20 , DOI: 10.1021/acs.jafc.0c01397 Qing Liu 1 , Menglin Liu 1 , Sihan Wu 1 , Bowen Xiao 1 , Xiaolei Wang 1 , Binbin Sun 1 , Lingyan Zhu 1
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2020-05-20 , DOI: 10.1021/acs.jafc.0c01397 Qing Liu 1 , Menglin Liu 1 , Sihan Wu 1 , Bowen Xiao 1 , Xiaolei Wang 1 , Binbin Sun 1 , Lingyan Zhu 1
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In this study, wheat (Triticum aestivum L.) was exposed to three of the most typical chlorinated organophosphate esters (OPEs), which are widely present in farmland soil, at environmental concentrations to assess their accumulation, disruption on metabolism, and oxidative stress in wheat. The three OPEs accumulated distinctly in the root and then translocated to the shoot. After exposure for 7 days, the content of chlorophyll b decreased, while the levels of carotenoid and activities of antioxidases, malonaldehyde, and reactive oxygen species increased significantly in both the root and shoot, indicating that the target OPEs caused significant oxidative stresses and affected photosynthesis in wheat. Untargeted metabolomics revealed concentration- and species-dependent metabolic responses of the three OPEs. Saccharides were downregulated, which might be due to the reduced photosynthesis activities. On the other hand, the chlorinated OPEs induced increases in respiration and antioxidative metabolites, revealing that the antioxidant system of wheat was active in scavenging ROS. The disturbance of tris(1,3-dichloro-2-propyl)phosphate on the metabolisms in wheat tissues was the strongest. These results contribute to the food safety and crop quality assessment of chlorinated OPEs and clarify the underlying mechanisms of their phytotoxicities.
中文翻译：
代谢组学揭示了小麦（Triticum aestivum L.）暴露于氯化有机磷酯的抗氧化应激反应。
在这项研究中，小麦（Triticum aestivum L.）暴露于农田土壤中广泛存在的三种最典型的氯化有机磷酸酯（OPEs），其环境浓度可以评估其积累，代谢破坏和氧化胁迫。小麦。这三个OPEs在根部明显聚集，然后转移到芽中。暴露7天后，叶绿素b的含量小麦的根中和茎中的类胡萝卜素水平降低，而抗氧化酶，丙二醛和活性氧的活性显着增加，表明目标OPEs引起了显着的氧化应激并影响了小麦的光合作用。未靶向的代谢组学揭示了三种OPE的浓度和物种依赖性代谢反应。糖被下调，这可能是由于光合作用降低。另一方面，氯化的OPEs引起呼吸和抗氧化代谢产物的增加，表明小麦的抗氧化系统具有清除ROS的活性。磷酸三（1,3-二氯-2-丙基）酯对小麦组织代谢的影响最大。
更新日期：2020-05-20
中文翻译：
代谢组学揭示了小麦（Triticum aestivum L.）暴露于氯化有机磷酯的抗氧化应激反应。
在这项研究中，小麦（Triticum aestivum L.）暴露于农田土壤中广泛存在的三种最典型的氯化有机磷酸酯（OPEs），其环境浓度可以评估其积累，代谢破坏和氧化胁迫。小麦。这三个OPEs在根部明显聚集，然后转移到芽中。暴露7天后，叶绿素b的含量小麦的根中和茎中的类胡萝卜素水平降低，而抗氧化酶，丙二醛和活性氧的活性显着增加，表明目标OPEs引起了显着的氧化应激并影响了小麦的光合作用。未靶向的代谢组学揭示了三种OPE的浓度和物种依赖性代谢反应。糖被下调，这可能是由于光合作用降低。另一方面，氯化的OPEs引起呼吸和抗氧化代谢产物的增加，表明小麦的抗氧化系统具有清除ROS的活性。磷酸三（1,3-二氯-2-丙基）酯对小麦组织代谢的影响最大。
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