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Metabolic profiling based on LC/MS to evaluate unintended effects of transgenic rice with cry1Ac and sck genes

机译:基于LC / MS的代谢谱分析,评估带有cry1Ac和sck基因的转基因水稻的意外影响

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摘要

As a primary characteristic of substantial equivalence, the evaluation of unintended effects of genetically modified plants has been evolving into an important field of research. In this study, a metabolic profiling method for rice seeds was developed using rapid resolution liquid chromatography/quadrupole time-of-flight mass spectrometry. The analytical properties of the method, including the linearity, reproducibility, intra-day precision and inter-day precision, were investigated and were found to be satisfactory. The method was then applied to investigate the differences between transgenic rice and its native counterparts, in addition to the differences found between native rice with different sowing dates or locations. Global metabolic phenotype differences were visualized, and metabolites from different discriminated groups were discovered using multivariate data analysis. The results indicated that environmental factors played a greater role than gene modification for most metabolites, including tryptophan, 9,10,13-trihydroxyoctadec-11-enoic acid, and lysophosphatidylethanolamine 16:0. The concentrations of phytosphingosine, palmitic acid, 5-hydroxy-2-octadenoic acid and three other unidentified metabolites varied slightly due to gene modification.
机译:作为实质等同的主要特征,对转基因植物的意想不到的效果的评估已发展成为重要的研究领域。在这项研究中,使用快速分离液相色谱/四极杆飞行时间质谱开发了一种用于水稻种子的代谢谱分析方法。研究了该方法的分析特性,包括线性,重现性,日内精度和日间精度,发现令人满意。然后将该方法用于调查转基因水稻与其本地同类水稻之间的差异,以及在不同播种日期或地点的本地水稻之间的差异。可视化整体代谢表型差异,并使用多元数据分析发现了来自不同歧视人群的代谢物。结果表明,对于大多数代谢物,包括色氨酸,9,10,13-三羟基十八烷基-11-烯酸和溶血磷脂酰乙醇胺16:0,环境因素起着比基因修饰更大的作用。由于基因修饰,植物鞘氨醇,棕榈酸,5-羟基-2-辛腺苷和其他三种未确定代谢物的浓度略有不同。

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