Chen Jiahui, Chen Hui, Wang Haixia, Zhan Junyi, Yuan Xingxing, Cui Jin, Su Nana
College of Life Science, Nanjing Agricultural University, Nanjing 210095, China.
Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing 210014, China.
Food Res Int. 2023 Mar;165:112551. doi: 10.1016/j.foodres.2023.112551. Epub 2023 Feb 2.
Red radish sprout become a popular dietary vegetable because of its unique flavor, abundant nutrients and short production cycle. As a cruciferous plant, it has strong ability to absorb and assimilate Se which can promote the content of anthocyanin in plants. However, the mechanisms of Se on anthocyanin accumulation are still unclear. In this study, we explored that appropriate Se promoted growth, antioxidant system and nutrients in radish sprouts. The enhancement of photosynthesis by Se treatment resulted in more sucrose synthesis in radish sprouts. And the transport of sucrose from cotyledon to hypocotyl promoted by Se through up-regulating the gene expression of sucrose transporters, and more sucrose increased the expression of anthocyanin biosynthesis genes to promote anthocyanin accumulation in hypocotyl. These results reveal the beneficial effect of Se on radish sprouts quality, and provide a new insight into the function of Se on sucrose-induced anthocyanin accumulation in radish sprouts.
红萝卜芽因其独特的风味、丰富的营养和较短的生产周期而成为一种受欢迎的食用蔬菜。作为十字花科植物，它具有很强的吸收和同化硒的能力，硒可以促进植物中花青素的含量。然而，硒对花青素积累的机制仍不清楚。在本研究中，我们探究了适量的硒促进萝卜芽的生长、抗氧化系统和营养成分。硒处理增强光合作用导致萝卜芽中蔗糖合成增加。并且硒通过上调蔗糖转运蛋白的基因表达促进蔗糖从子叶向胚轴的运输，更多的蔗糖增加了花青素生物合成基因的表达，从而促进胚轴中花青素的积累。这些结果揭示了硒对萝卜芽品质的有益作用，并为硒对萝卜芽中蔗糖诱导的花青素积累的作用提供了新的见解。
