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- Title
Effects of exogenous γ-Aminobutyric acid on the regulation of respiration and protein expression in germinating seeds of mungbean (Vigna radiata) under salt conditions.
- Authors
Jing Ji; Shengqing Shi; Wei Chen; Tiantian Xie; Changjian Du; Jiacheng Sun; Zheng Shi; Rongfu Gao; Zeping Jiang; Wenfa Xiao
- Abstract
Background: γ-Aminobutyric acid (GABA) bypasses the TCA cycle via GABA shunt, suggesting a relationshipwith respiration. However, little is known about its role in seed germination under salt conditions. Results: In this study, exogenous GABA was shown to have almost no influence onmungbean seed germination, except 0.1 mM at 10 h, while it completely alleviated the inhibition of germination by salt treatment. Seed respiration was significantly inhibited by 0.1 and 0.5 mM GABA, but was evidently enhanced under salt treatment, whereas both were promoted by 1 mM GABA alone or with salt treatment. Mitochondrial respiration also showed a similar trend at 0.1 mM GABA. Moreover, proteomic analysis further showed that 43 annotated proteins were affected by exogenous GABA, even 0.1 mM under salt treatment, including complexes of the mitochondrial respiratory chain. Conclusions: Our study provides newevidence that GABAmay act as a signalmolecule in regulating respiration of mungbean seed germination in response to salt stress.
- Subjects
MUNG bean; REGULATION of respiration; PROTEIN expression; GERMINATION; SALT; SEEDS
- Publication
Electronic Journal of Biotechnology, 2020, Vol 47, p1
- ISSN
0717-3458
- Publication type
Article
- DOI
10.1016/j.ejbt.2020.05.005