耐铝玉米(Zea mays L.)籽粒养分和植物化学成分的组成变化

GM crops Pub Date : 2022-01-25 DOI:10.3390/crops2010002
Sofia Ortíz-Islas, S. Serna-Saldívar, S. García‐Lara
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引用次数: 0

摘要

玉米(Zea mays L.)是全球最重要的三大粮食作物之一。玉米生长受到酸性土壤中铝含量高的影响,而酸性土壤占世界可耕种面积的近50%。因此,在这些地区培育耐铝玉米杂交品种可能是一种更健康的选择,也是一种有吸引力的食物来源。在此基础上,对耐铝玉米(Al-T)和铝敏感玉米(Al-S)自交系16个品种的营养成分和化学成分组成模式进行了筛选。测定了解剖核部(果皮、胚乳和胚芽)的近似分析、游离酚酸(FPA)和细胞壁结合酚酸(CPA)含量以及抗氧化能力(AOX)。Al-T玉米籽粒胚芽蛋白、油脂和纤维含量(分别为2.9、3.0和0.5%)显著高于Al-S玉米籽粒(分别为1.9、1.8和0.3%)。Al-T玉米籽粒的果皮FPA和胚芽CPA的营养成分含量(EGA分别为92 mg和140 mg /100 g)显著高于Al-T玉米籽粒(EGA为9.0 mmol /100 g), AOX最高,说明Al-T玉米籽粒的营养成分和植物化学物质发生了正向变化;这意味着使用Al-T玉米自交系产生的杂交种可能成为酸性土壤农业区营养和植物化学物质的有吸引力的来源。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Constitutive Changes in Nutrients and Phytochemicals in Kernels of Aluminium-Tolerant Maize (Zea mays L.)
Maize (Zea mays L.) is among the three most important food crops worldwide. Maize growth is affected by high aluminium content in acid soils, which constitute nearly 50% of the world’s cultivable area. Therefore, the cultivation of aluminium-tolerant maize hybrids could be a healthier alternative and an attractive food source in these regions. In this regard, to produce hybrids kernels, 16 inbred lines aluminium-tolerant (Al-T) and aluminium-susceptible (Al-S) maize were screened for their constitutive patterns of selected nutrients and phytochemicals. Proximate analysis, free phenolic acids (FPA) and cell wall-bound phenolic acids (CPA) contents, as well as antioxidant capacity (AOX) were assayed in the anatomical kernel parts (pericarp, endosperm, and germ). Kernels of Al-T maize contained significantly higher germ protein, oil, and fibre (2.9, 3.0, and 0.5%, respectively) than Al-S kernels (1.9, 1.8, and 0.3%, respectively). Importantly, the nutraceutical contents in terms of pericarp FPA and germ CPA were significantly higher in kernels belonging to Al-T maize (92 mg and 140 mg EGA/100 g). The highest AOX was observed in germ CPA of Al-T kernels (9.0 mmol TE/100 g). The results herein indicate that Al-tolerance mechanisms induce positive changes in the nutrients and phytochemicals; this implies that the hybrids generated using Al-T maize inbred lines could emerge as an attractive source of nutrients and phytochemicals in farming regions containing acid soils.
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