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报道了核黄素促进植物生长的效应及分子反应。在实验室内对 7种粮食、蔬菜和经济作物使用核黄素后 ,植物生长量增加 2 3 8%～ 85 4 %。在田间试验中 ,烟草使用核黄素后 ,生长量提高 35 9%～ 10 8% ,烤烟叶产量提高 4 4 7%～110 3%。在拟南芥上 ,核黄素处理可以诱导PR 3b、PDF1 2、ETR1和EIN2基因的表达 ;PR 3b和PDF1 2是乙烯信号通路的分子标志 ,乙烯 /茉莉酸信号传导可以调控植物生长发育 ;ETR1和EIN2是乙烯信号通路上、下游的关键调控基因 ,其产物分别作为乙烯的受体和转录调控因子起作用。根据以上这些结果 ,核黄素启动了植物生长信号传导通路的分子反应 ,促进了植物生长
The effects and molecular responses of riboflavin to plant growth have been reported. After using riboflavin in seven kinds of foodstuffs, vegetables and cash crops in the laboratory, the growth of plants increased by 23.8% -85.4%. In field trials, the growth of tobacco increased 35 9% ~ 108% after tobacco use of riboflavin, and the yield of flue-cured tobacco increased by 4 4 7% ~ 110 3%. Riboflavin treatment induced the expression of PR 3b, PDF1 2, ETR1 and EIN2 genes in Arabidopsis thaliana; PR 3b and PDF1 2 were molecular markers of ethylene signaling pathway, and ethylene / jasmonic acid signal transduction could regulate plant growth and development; ETR1 and EIN2 are key regulatory genes downstream and upstream of the ethylene signaling pathway, and their products function as ethylene receptors and transcriptional regulators, respectively. Based on these results, riboflavin initiates the molecular response of the plant growth signal transduction pathway and promotes plant growth