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- Title
Abscisic Acid Promotes γ-Aminobutyric Acid Accumulation in Soybean Germinating Under Hypoxia-NaCl Stress.
- Authors
Yuan-Xin Guo; Dong-Xu Wang; Hua Ye; Zhen-Xin Gu; Run-Qiang Yang
- Abstract
γ-aminobutyric acid is a nonprotein amino acid that accumulates in plants under stress. Abscisic acid is important for stress regulation via modulation of γ-aminobutyric acid function. Our results show that the expression of glutamate decarboxylase but not diamine oxidase gene is upregulated in germinating soybean treating treated with exogenous abscisic acid. There was a concomitant increase in glutamate decarboxylase and diamine oxidase activities and putrescine and spermine contents with a decrease in glutamate. These changes were abrogated by fluridone, an inhibitor of abscisic acid synthesis. In conclusion, abscisic acid treatment increases γ-aminobutyric acid accumulation by upregulating diamine oxidase gene expression and activation of glutamate decarboxylase and diamine oxidase activity in germinating soybean under hypoxia-salt stress.
- Publication
Current Topics in Nutraceutical Research, 2021, Vol 19, Issue 3, p283
- ISSN
1540-7535
- Publication type
Academic Journal
- DOI
10.37290/ctnr2641-452X.19:283–287