开花
贮藏蛋白
小麦粒
蛋白质表达
基因表达
氮气
基因
化学
农学
蛋白质质量
食品科学
作文(语言)
生物
生物化学
植物
栽培
语言学
哲学
有机化学
作者
Anne Roßmann,Peter Büchner,George Peter Savill,Stephen J. Powers,Malcolm J. Hawkesford,Karl H. Mühling
标识
DOI:10.1021/acs.jafc.9b04634
摘要
The major components of wheat storage proteins are gliadins and glutenins, and as they contribute differently to baking quality, a balanced mixture of these components is essential. The application of foliar nitrogen (N) at anthesis is a common practice to improve protein concentration and composition. The aim of this study was to investigate the effects of a foliar N application at anthesis on storage protein gene expression during grain development and on the distribution of protein concentration and protein body size within the grain. In this experiment, an additional N application at anthesis stimulated the expression of genes of the majority of storage proteins when the N supply was low. Furthermore, it led to higher protein concentrations in the subaleurone layers, while in the center of the lobes, the protein concentrations were decreased. These changes will affect the protein recovery in white flours, as proportionally more protein might be lost during milling processes.
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