Soybean (Glycine max L.) is an important source of protein for human and animal nutrition, as well as a major source of vegetable oil. The soybean crop requires adequate water all through its growth period to attain its yield potential, and the lack of soil moisture at critical stages of growth profoundly impacts the productivity. In this study, utilizing 1H NMR-based metabolite analysis combined with the physiological studies we assessed the effects of short-term water stress on overall growth, nitrogen fixation, ureide and proline dynamics, as well as metabolic changes in drought tolerant (NA5009RG) and sensitive (DM50048) genotypes of soybean in order to elucidate metabolite adjustments in relation to the physiological responses in the nitrogen-fixing plants towards water limitation. The results of our analysis demonstrated critical differences in physiological responses between these two genotypes, and identified the metabolic pathways that are affected by short-term water limitation in soybean plants. Metabolic changes in response to drought conditions highlighted pools of metabolites that play a role in the adjustment of metabolism and physiology of the soybean varieties to meet drought effects.
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机译:大豆(Glycine max L.)是人类和动物营养的重要蛋白质来源,也是植物油的主要来源。大豆作物在整个生育期间都需要充足的水才能达到其产量潜力,而且在生长的关键阶段缺乏土壤水分会严重影响生产力。在这项研究中,结合基于1H NMR的代谢物分析和生理研究,我们评估了短期水分胁迫对整体生长,固氮,尿素和脯氨酸动力学以及耐旱(NA5009RG)和敏感(DM50048)基因型的大豆,以阐明与固氮植物对水分限制的生理反应有关的代谢物调节。我们的分析结果表明这两种基因型之间在生理反应方面存在重大差异,并确定了受大豆短期水分限制影响的代谢途径。响应干旱条件的代谢变化突显了代谢物库,这些代谢物在调节大豆品种的代谢和生理以满足干旱影响中发挥作用。
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