GABA Regulates Phenolics Accumulation in Soybean Sprouts under NaCl Stress.
GABA Regulates Phenolics Accumulation in Soybean Sprouts under NaCl Stress.
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GABA 在 NaCl 胁迫下调节豆芽中酚类物质的积累
DOI：
10.3390/antiox10060990
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发表时间：
2021-06-21
期刊：
影响因子：
--
通讯作者：
Yang R
中科院分区：
文献类型：
--
作者：
Zhao Y;Xie C;Wang P;Gu Z;Yang R
NaCl stress causes oxidative stress in plants; γ-aminobutyric acid (GABA) could alleviate such abiotic stress by enhancing the synthesis of phenolics, but the underlying mechanism is not clear. We investigated the effects of GABA on phenolics accumulation in soybean sprouts under NaCl stress by measuring changes in the content of physiological biochemicals and phenolic substances, in the activity and gene expression of key enzymes, and in antioxidant capacity. GABA reduced the oxidative damage in soybean sprouts caused by NaCl stress and enhanced the content of total phenolics, phenolic acids, and isoflavones by 16.58%, 22.47%, and 3.75%, respectively. It also increased the activities and expression of phenylalanine ammonia lyase, cinnamic acid 4-hydroxylase, and 4-coumarate coenzyme A ligase. Furthermore, GABA increased the activity of antioxidant enzymes and the antioxidant capacity. These events were inhibited by 3-mercaptopropionate (an inhibitor for GABA synthesis), indicating that GABA mediated phenolics accumulation and antioxidant system enhancement in soybean sprouts under NaCl stress.
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