The effects of GABA in plants

Ramos-Ruiz, Roberto; Martínez, F. Lucena; Knauf-Beiter, G.

doi:10.1080/23311932.2019.1670553

Cited by 105 publications

(112 citation statements)

References 67 publications

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“…Glutathione is a canonical antioxidant that was shown to be involved in pathogenesis [ 56 ]. GABA was also demonstrated to accumulate in plants under a variety of stress conditions and to induce resistance to pathogens [ 57 , 58 ].…”

Section: Resultsmentioning

confidence: 99%

Plant Soft Rot Development and Regulation from the Viewpoint of Transcriptomic Profiling

Tsers

Gorshkov

Gogoleva

et al. 2020

Plants

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Soft rot caused by Pectobacterium species is a devastating plant disease poorly characterized in terms of host plant responses. In this study, changes in the transcriptome of tobacco plants after infection with Pectobacterium atrosepticum (Pba) were analyzed using RNA-Seq. To draw a comprehensive and nontrivially itemized picture of physiological events in Pba-infected plants and to reveal novel potential molecular “players” in plant–Pba interactions, an original functional gene classification was performed. The classifications present in various databases were merged, enriched by “missed” genes, and divided into subcategories. Particular changes in plant cell wall-related processes, perturbations in hormonal and other regulatory systems, and alterations in primary, secondary, and redox metabolism were elucidated in terms of gene expression. Special attention was paid to the prediction of transcription factors (TFs) involved in the disease’s development. Herewith, gene expression was analyzed within the predicted TF regulons assembled at the whole-genome level based on the presence of particular cis-regulatory elements (CREs) in gene promoters. Several TFs, whose regulons were enriched by differentially expressed genes, were considered to be potential master regulators of Pba-induced plant responses. Differential regulation of genes belonging to a particular multigene family and encoding cognate proteins was explained by the presence/absence of the particular CRE in gene promoters.

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Section: Resultsmentioning

confidence: 99%

Plant Soft Rot Development and Regulation from the Viewpoint of Transcriptomic Profiling

Tsers

Gorshkov

Gogoleva

et al. 2020

Plants

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“…Recent studies highlight the role of γ-aminobutyric acid (GABA) in affecting tolerance to abiotic stress in plants [ 7 ]. It has been reported about beneficial effects of GABA on regulating nitrogen balance, antioxidant, osmotic adjustment (OA), and amino acids accumulation when plants undergone abiotic stress [ 8 ]. Arabidopsis calmodulin mutants became sensitive to heat stress because of the disturbance in the accumulation of GABA and other metabolites in GABA shunt under heat stress [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

γ-Aminobutyric Acid Enhances Heat Tolerance Associated with the Change of Proteomic Profiling in Creeping Bentgrass

et al. 2020

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γ-Aminobutyric acid (GABA) participates in the regulation of adaptability to abiotic stress in plants. The objectives of this study were to investigate the effects of GABA priming on improving thermotolerance in creeping bentgrass (Agrostis stolonifera) based on analyses of physiology and proteome using iTRAQ technology. GABA-treated plants maintained significantly higher endogenous GABA content, photochemical efficiency, performance index on absorption basis, membrane stability, and osmotic adjustment (OA) than untreated plants during a prolonged period of heat stress (18 days), which indicated beneficial effects of GABA on alleviating heat damage. Protein profiles showed that plants were able to regulate some common metabolic processes including porphyrin and chlorophyll metabolism, glutathione metabolism, pyruvate metabolism, carbon fixation, and amino acid metabolism for heat acclimation. It is noteworthy that the GABA application particularly regulated arachidonic acid metabolism and phenylpropanoid biosynthesis related to better thermotolerance. In response to heat stress, the GABA priming significantly increased the abundances of Cu/ZnSOD and APX4 that were consistent with superoxide dismutase (SOD) and ascorbate peroxidase (APX) activities. The GABA-upregulated proteins in relation to antioxidant defense (Cu/ZnSOD and APX4) for the reactive oxygen species scavenging, heat shock response (HSP90, HSP70, and HSP16.9) for preventing denatured proteins aggregation, stabilizing abnormal proteins, promoting protein maturation and assembly, sugars, and amino acids metabolism (PFK5, ATP-dependent 6-phosphofructokinase 5; FK2, fructokinase 2; BFRUCT, β-fructofuranosidase; RFS2, galactinol-sucrose galactosyltransferase 2; ASN2, asparagine synthetase 2) for OA and energy metabolism, and transcription factor (C2H2 ZNF, C2H2 zinc-finger protein) for the activation of stress-defensive genes could play vital roles in establishing thermotolerance. Current findings provide an illuminating insight into the new function of GABA on enhancing adaptability to heat stress in plants.

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“…MDA and H 2 O 2 contents were decreased significantly in germinating soybeans. GABA is another of the stress-tolerance substances and functions to regulate infiltration in plants [26]. The application of Spd under the NaCl treatment significantly increased the GABA content in soybeans.…”

Section: Discussionmentioning

confidence: 99%

Exogenous Spermidine Promotes γ-Aminobutyric Acid Accumulation and Alleviates the Negative Effect of NaCl Stress in Germinating Soybean (Glycine max L.)

Fang

Yin

et al. 2020

Foods

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We investigated the effects of exogenous spermidine (Spd) on the physiological status, γ-aminobutyric acid (GABA) synthase activity, and gene expressions in germinating soybeans under NaCl stress. The results show that Spd significantly increases sprout growth and biomass, decreases malonaldehyde and H2O2 contents, and markedly promotes the activities of superoxide dismutase, catalase, peroxidase, and glutathione peroxidase of germinating soybeans. The harmful effect of NaCl stress was alleviated by exogenous Spd. GABA accumulation in germinating soybeans was caused by the activation of diamine oxidase, polyamine oxidase, aminoaldehyde dehydrogenase, and glutamate decarboxylase activities and by up-regulating their gene expression under Spd-NaCl treatment. The GABA content decreased by 57% and 46% in germinating soybeans with the application of aminoguanidine under Spd and Spd-NaCl treatments, respectively. In conclusion, spermidine induces the accumulation of GABA and increases sprouts biomass, thereby enhancing the functional quality of germinating soybeans.

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The effects of GABA in plants

Cited by 105 publications

References 67 publications

Plant Soft Rot Development and Regulation from the Viewpoint of Transcriptomic Profiling

Plant Soft Rot Development and Regulation from the Viewpoint of Transcriptomic Profiling

γ-Aminobutyric Acid Enhances Heat Tolerance Associated with the Change of Proteomic Profiling in Creeping Bentgrass

Exogenous Spermidine Promotes γ-Aminobutyric Acid Accumulation and Alleviates the Negative Effect of NaCl Stress in Germinating Soybean (Glycine max L.)

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