[No authors listed]
UNLABELLED:Effects of Ca(2+) on yield and nutritional qualities of soybean sprout were investigated. Ca-treated sprouts had higher yield than water-treated ones. Metabolism of selected storage materials and bioactive substances in soybean sprouts was strengthened by Ca(2+). The phytic acid and saponin content of Ca-treated soybean sprouts were lower than those of control. Supplemental Ca(2+) increased content of gamma-aminobutyric acid, isoflavones, phenolics, and vitamins, respectively. These findings indicate that supplemental Ca(2+) can increase soybean sprout yield and improve its nutritional qualities. The comparative transcriptome and proteomics between water-treated and Ca-treated soybean sprouts were studied. As consequence 1912 genes and 460 proteins were up- or down-regulated after 4days of Ca(2+) treatment. The functional classification of these differentially expressed genes and proteins indicated their connection with primary/secondary metabolic pathways, ion transport, signal transduction, and transcriptional regulation. The results obtained here will enable to understand how changes in yield and nutritional quality are regulated by extra Ca(2+) in soybean sprouts. BIOLOGICAL SIGNIFICANCE:In this study, a total of 1912 genes and 460 proteins involved in the growth, storage material decomposition, and bioactive substance synthesis in soybean sprouts after treated with Ca(2+) were identified. This is the first report of a comprehensive transcriptomic and proteomic analysis of soybean sprout in response to supplemental Ca(2+).
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