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首页> 外文期刊>Journal of Plant Physiology >Metabolic effects of glyphosate change the capacity of maize culture to regenerate plants
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Metabolic effects of glyphosate change the capacity of maize culture to regenerate plants

机译：草甘膦的代谢作用改变了玉米培养物再生植物的能力

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Since the presence of glyhosate in maize tissue cultures of proprietary line L2 was very detrimental to plant regeneration, we determined metabolic changes associated with the glyphosate effects on plant regeneration in maize cultures.The polar fraction composition and soluble and cell-wall-bound phenolics were analyzed in the regenerable (R) and non-regenerable (NR) calluses of maize line L2. The tissues with high regeneration capacity had low sugar and 4-aminobutyric acid (GABA) concentrations and increased concentrations of most amino acids, polyamines and indole-3-butenol in the soluble polar fraction and higher ferulic acid/coumaric acid and ferulic acid/diferulic acid ratios and higher levels of the predominant G (guaiacyl) units in the cell wall fraction compared with NR calluses as was found before with H99 and Hill maize R and NR tissues, indicating an association of these metabolites with the capacity of maize cultured tissue to regenerate plants. We also found that di-coumaroyl spermidine and coumaroyl-feruoyl spermidine are present in the soluble fraction of L2 R tissues and are practically absent in NR tissues. However, we did not see such differences in Hill and H99 samples, which indicate that these are genotypic features not related to the capacity to regenerate plants in maize tissue cultures. Glyphosate treatment caused the accumulation of shikimic and quinic acids (not detected in untreated samples) in R and NR calluses (with higher levels found in R tissues) and also decreased the FA/diFA ratio in cell wall phenolics, polyamine and amino acid levels,
机译：由于专利系L2的玉米组织培养物中草甘膦的存在对植物的再生非常不利，因此我们确定了与草甘膦对玉米培养物中植物再生的影响有关的代谢变化，其中极性组分，可溶性和细胞壁结合酚在玉米品系L2的可再生（R）和不可再生（NR）愈伤组织中进行了分析。具有高再生能力的组织中糖和4-氨基丁酸（GABA）的浓度较低，可溶性极性级分中的大多数氨基酸，多胺和吲哚-3-丁烯醇的浓度较高，而阿魏酸/香豆酸和阿魏酸/二化纤维素的浓度较高。之前在H99和Hill玉米R和NR组织中发现，与NR愈伤组织相比，细胞壁部分中的酸比率和主要G（愈创木脂基）单位的含量更高，表明这些代谢产物与玉米培养组织的能力相关再生植物。我们还发现，二香豆酰基亚精胺和香豆酰基-铁酰基亚精胺存在于L2 R组织的可溶性部分中，而在NR组织中实际上不存在。但是，我们没有在Hill和H99样品中看到这种差异，这表明这些是基因型特征，与玉米组织培养中植物的再生能力无关。草甘膦处理导致R和NR愈伤组织中（草酸和奎尼酸的积累（未处理样品中未检出）（R组织中的含量较高），并且降低了细胞壁酚，多胺和氨基酸水平中FA / diFA的比率，

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