Wei Qinling, Xie Keqin, Wang Hongfei, Shao Xingfeng, Wei Yingying, Chen Yi, Jiang Shu, Cao Mengze, Chen Jisuan, Xu Feng
Zhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and Nutrition, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, China.
Seymour College, Glen Osmond, SA 5064, Australia.
Plants (Basel). 2023 Jan 4;12(2):224. doi: 10.3390/plants12020224.
The effect of fructose on γ-aminobutyric acid (GABA) content and its metabolic pathway in broccoli sprouts was investigated. The results demonstrated that the fructose treatment not only significantly increased the fresh weight, GABA, and glutamate contents in sprouts, but also promoted the activity of glutamic acid decarboxylase (GAD) and the expressions of and . Meanwhile, fructose treatment inhibited the stem length of broccoli sprouts and enhanced the abscisic acid (ABA) production in comparison with the control. Ca, CaM contents, and expression in broccoli sprouts were also stimulated after fructose treatment. Exogenous fructose increased inositol trisphosphate (IP) content and activated the activity of phosphatidylinositol-specific phospholipase C (PI-PLC) and the expression of , contributing to Ca influx into the cells. These results suggested that Ca played an essential role in GABA enrichment under fructose treatment, which may be associated with GAD and PI-PLC.
研究了果糖对西兰花芽中γ-氨基丁酸(GABA)含量及其代谢途径的影响。结果表明,果糖处理不仅显著增加了芽苗的鲜重、GABA和谷氨酸含量,还促进了谷氨酸脱羧酶(GAD)的活性以及[具体基因名称1]和[具体基因名称2]的表达。同时,与对照相比,果糖处理抑制了西兰花芽苗的茎长,并提高了脱落酸(ABA)的产量。果糖处理后,西兰花芽苗中的钙(Ca)、钙调蛋白(CaM)含量以及[具体基因名称3]的表达也受到刺激。外源果糖增加了三磷酸肌醇(IP)含量,激活了磷脂酰肌醇特异性磷脂酶C(PI-PLC)的活性以及[具体基因名称4]的表达,促使Ca流入细胞。这些结果表明,Ca在果糖处理下的GABA富集过程中起关键作用,这可能与GAD和PI-PLC有关。