Exogenous γ-aminobutyric acid strengthens phenylpropanoid and nitrogen metabolism to enhance the contents of flavonoids, amino acids, and the derivatives in edamame

Gao, Yu; Chen, Fengqiong; Wang, Yating; Liu, Hanlin; Tian, Jie; Wang, Mengxue; Ren, Cheng; Zhao, Qiang; Yang, Fengjun; Sheng, Yunyan; Wei, Jinpeng; Zhang, Yuxian

doi:10.1016/j.fochx.2022.100511

Cited by 12 publications

(6 citation statements)

References 43 publications

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“…Yu et al ( 2022) reported GABA's positive effects on total anthocyanin production and plant accumulation [47]. The results of the current study confirmed this effect under all light treatments under both stress and non-stress conditions.…”

Section: Gaba Induced Pigment and Carbohydrate Accumulation In Lettuc...supporting

confidence: 87%

Gamma-Aminobutyric Acid-Mediated Alkalinity Stress Alleviation in Lollo Rosso Lettuce under Diverse Light Spectra

Mirzaei,

Moradi,

Karimi

et al. 2024

Agronomy

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The agricultural sector faces challenges due to climate change and the growing global population. Alkaline stress could adversely impact plant growth and crop production. This stressor diminishes water quality essential for crop cultivation, consequently impairing plant growth and overall productivity. Gamma-aminobutyric acid (GABA), a non-protein amino acid, may exhibit multifaceted roles in plant responses to adverse environmental conditions. Optimization of crop production in controlled environmental agriculture under artificial light attracted much attention. In the present study, we investigated the effects of different light spectra and GABA concentrations on Lollo Rosso lettuce plants under alkaline stress. Seedlings were placed under different light spectra [red (R), blue (B), white (W), 3R:1B, and 2R:1B:1far red (FR)] and treated with GABA (0 and 50 µmol). Alkaline conditions were instituted by applying NaHCO3 at a concentration of 40 mM. The experiment incorporated a control treatment without NaHCO3. In general, R light exposure caused the highest growth performance of lettuce plants. GABA augmented biomass production in control and alkaline-treated plants across all light spectra. Additionally, it increased the concentrations of photosynthetic and protective pigments under alkaline conditions. GABA also improved the photosynthetic performance under all light spectra. Non-photochemical quenching and pigmentation were enhanced by exposure to B light, especially in plants treated with GABA. Alkaline stress induced an increase in soluble carbohydrate content in the lettuce leaves. These findings highlight the support of GABA application in facilitating coping plants to alkaline stress.

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Section: Gaba Induced Pigment and Carbohydrate Accumulation In Lettuc...supporting

confidence: 87%

Gamma-Aminobutyric Acid-Mediated Alkalinity Stress Alleviation in Lollo Rosso Lettuce under Diverse Light Spectra

Mirzaei,

Moradi,

Karimi

et al. 2024

Agronomy

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“…48 Additionally, enhanced nitrogen metabolism is reportedly inextricably linked to elevated flavonoid and amino acid synthesis. 49 Certainly, this root stimulation was more sensitive to n-ZnO and s-ZnO, and it was more tolerant to b-ZnO, consistent with the physiological state of root elongation.…”

Section: Amino Acid and Carbon/nitrogensupporting

confidence: 67%

“…This may be attributed to the fact that arginine can effectively alleviate nitrogen deficiency and increase levels of critical amino acids . Additionally, enhanced nitrogen metabolism is reportedly inextricably linked to elevated flavonoid and amino acid synthesis . Certainly, this root stimulation was more sensitive to n-ZnO and s-ZnO, and it was more tolerant to b-ZnO, consistent with the physiological state of root elongation.…”

Section: Results and Discussionmentioning

confidence: 99%

Driving Role of Zinc Oxide Nanoparticles with Different Sizes and Hydrophobicity in Metabolic Response and Eco-Corona Formation in Sprouts (Vigna radiata)

Kang,

Bai,

Liu

et al. 2024

Environ. Sci. Technol.

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Zinc oxide nanoparticles (ZnO NPs) cause biotoxicity and pose a potential ecological threat; however, their effects on plant metabolism and eco-corona evolution between NPs and organisms remain unclear. This study clarified the molecular mechanisms underlying physiological and metabolic responses induced by three different ZnO NPs with different sizes and hydrophobicity in sprouts (Vigna radiata) and explored the critical regulation of eco-corona formation in root–nano systems. Results indicated that smaller-sized ZnO inhibited root elongation by up to 37.14% and triggered oxidative burst and apoptosis. Metabolomics confirmed that physiological maintenance after n-ZnO exposure was mainly attributed to the effective stabilization of nitrogen fixation and defense systems by biotransformation of the flavonoid pathway. Larger-sized or hydrophobic group-modified ZnO exhibited low toxicity in sprouts, with 0.89-fold upregulation of citrate in central carbon metabolism. This contributed to providing energy for resistance to NP stress through amino acid and carbon/nitrogen metabolism, accompanied by changes in membrane properties. Notably, smaller-sized and hydrophobic NPs intensely stimulated the release of root metabolites, forming corona complexes with exudates. The hydrogen-bonded wrapping mechanism in protein secondary structure and hydrophobic interactions of heterogeneous functional groups drove eco-corona formation, along with the corona evolution intensity of n-ZnO > s-ZnO > b-ZnO based on higher (α-helix + 3-turn helix)/β-sheet ratios. This study provides crucial insight into metabolic and eco-corona evolution in bionano fates.

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“…The GABA shunts also play a significant role in providing energy and carbon structures during periods of stress. Yu et al [ 14 ] have reported that exogenous GABA significantly promotes the contents of sucrose and glucose, potentially by maintaining a normal TCA cycle. Similar findings were reported by Li et al [ 17 ], who indicated that the carbon skeletons of exogenous GABA entering the TCA cycle facilitate carbon assimilation, leading to the accumulation of sucrose and glucose, thereby improving the nutritional content of creeping bentgrass ( Agrostis stolonifera ).…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, GABA is signaling molecule and widely distributed in plants and can be involved in numerous processes, including the regulation of cytosolic pH, redox status, carbon (C) and nitrogen (N) metabolism, C/N fluxes, and acting as an osmoregulator [ 13 ]. Multiple previous investigations have revealed exogenous GABA function in regulating many aspects of plant growth and development [ 14 ]. Studies also have demonstrated that GABA has a pivotal role in ameliorating the negative effects caused by various environmental stresses on morphological and physiological traits of plants, including poplar ( Populus tomentosa Carr.)…”

Section: Introductionmentioning

confidence: 99%

Exogenous γ-aminobutyric acid improves the photosynthesis efficiency, soluble sugar contents, and mineral nutrients in pomegranate plants exposed to drought, salinity, and drought-salinity stresses

Zarbakhsh,

Shahsavar

2023

BMC Plant Biol

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Background γ-aminobutyric acid (GABA), as a regulator of many aspects of plant growth, has a pivotal role in improving plant stress resistance. However, few studies have focused on the use of GABA in increasing plants’ resistance to interactional stresses, such as drought-salinity. Therefore, the focus of this study was to examine the effect of foliar application of GABA (0, 10, 20, and 40 mM) on growth indices and physio-biochemical parameters in plants of two pomegranate cultivars, ‘Rabab’ and ‘Atabaki’ exposed to drought, salinity, and drought-salinity. Results Under stress conditions, the photosynthetic capacity of two pomegranate cultivars, including transpiration rate, net photosynthetic rate, intercellular carbon dioxide concentration, stomatal conductance of water vapour, and mesophyll conductance, was significantly reduced. This resulted in a decrease in root morphological traits such as fresh and dry weight, diameter, and volume, as well as the fresh and dry weight of the aerial part of the plants. However, the application of GABA reversed the negative effects caused by stress treatments on growth parameters and maintained the photosynthetic capacity. GABA application has induced the accumulation of compatible osmolytes, including total soluble carbohydrate, starch, glucose, fructose, and sucrose, in charge of providing energy for cellular defense response against abiotic stresses. Analysis of mineral nutrients has shown that GABA application increases the absorption of potassium, potassium/sodium, magnesium, phosphorus, manganese, zinc, and iron. As concentration increased up to 40 mM, GABA prevented the uptake of toxic ions, sodium and chloride. Conclusions These findings highlight the potential of GABA as a biostimulant strategy to enhance plant stress tolerance.

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Exogenous γ-aminobutyric acid strengthens phenylpropanoid and nitrogen metabolism to enhance the contents of flavonoids, amino acids, and the derivatives in edamame

Cited by 12 publications

References 43 publications

Gamma-Aminobutyric Acid-Mediated Alkalinity Stress Alleviation in Lollo Rosso Lettuce under Diverse Light Spectra

Gamma-Aminobutyric Acid-Mediated Alkalinity Stress Alleviation in Lollo Rosso Lettuce under Diverse Light Spectra

Driving Role of Zinc Oxide Nanoparticles with Different Sizes and Hydrophobicity in Metabolic Response and Eco-Corona Formation in Sprouts (Vigna radiata)

Exogenous γ-aminobutyric acid improves the photosynthesis efficiency, soluble sugar contents, and mineral nutrients in pomegranate plants exposed to drought, salinity, and drought-salinity stresses

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