| Literature DB >> 30902306 |
Zhijie Chen1, Yan Ma2, Runqiang Yang2, Zhenxin Gu3, Pei Wang4.
Abstract
Exogenous Ca2+ affects the phenolic metabolism and physiological indices of germinated wheat under ultraviolet-B (UV-B) radiation, but the mechanism is unclear. The current study applied exogenous Ca2+ and Ca2+ channel blocker LaCl3 to the germinated wheat under UV-B radiation to unravel the role of Ca2+. The results indicated that total phenolic content (TPC) of the 4-day germinated wheat under UV-B radiation with CaCl2 (UV-B+Ca) treatment significantly increased by 10.3% as compared to the UV-B treatment. Gene expression levels of p-coumarate 3-hydroxylase, cinnamic acid 4-hydroxylase and caffeic acid O-methyltransferase were positively correlated with the content of ferulic and p-coumaric acids, respectively. Exogenous Ca2+ could significantly alleviate the membrane lipid peroxidation, activate the antioxidant enzymes and regulate the phytohormone level under UV-B radiation. This study suggested that exogenous Ca2+ participated in the phenolic metabolism and physiological regulation in germinated wheat under UV-B radiation.Entities:
Keywords: Antioxidant enzyme; Ca(2+); Germinated wheat; Phenolic acid; Phytohormone; UV-B radiation
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Year: 2019 PMID： 30902306 DOI： 10.1016/j.foodchem.2019.02.131
Source DB: PubMed Journal: Food Chem ISSN： 0308-8146 Impact factor: 7.514