Effects of Exogenous Gamma-Aminobutyric Acid on Absorption and Regulation of Ion in Wheat Under Salinity Stress

Wang, Xiaodong; Dong, Hongtu; Hou, Peichen; Zhou, Hang; He, Lulu; Wang, Cheng

doi:10.1007/978-3-030-06179-1_35

Cited by 5 publications

(5 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As previously documented, GABA may help to improve the production and quality of carrots when grown under water-deficit conditions through its role as a bioregulator of various physio-biochemical phenomena (Ramesh et al 2017;Wang et al 2019). The present study was undertaken to investigate the efficacy of exogenous application of GABA on the pattern of root growth, and the levels of photosynthetic pigments and dietary antioxidants in curtailing the damaging effects of drought in carrots.…”

Section: Introductionmentioning

confidence: 89%

Morpho-physiological changes in carrots by foliar γ-aminobutyric acid under drought stress

et al. 2020

View full text Add to dashboard Cite

The present study was aimed to investigate the effects of foliar spray of γ-aminobutyric acid (GABA) on the morpho-physiological traits of water-stressed carrot cultivars (Supertaj and Bharat). The different levels of GABA (0, 1, 2, and 4 mM) were sprayed after 20 days of carrot germination grown under 100% and 50% field capacity of soil moisture. The samples were taken after 2 weeks of GABA application and morphological characteristics, integrity of cell-membrane, photosynthetic pigments, and enzymatic antioxidants were measured. The results revealed that the foliar application of GABA improved the vegetative growth and significantly increased the levels of free amino acids, plastid pigments, enzymatic antioxidants, and the relative water content in the roots grown under 50% field capacity as compared to control. Additionally, the GABA application decreased the electrolyte leakage of ions and malondialdehyde content in carrot leaves. The protein contents of GABA-treated carrot plants did not significantly vary with untreated plants. In conclusion, the application of GABA for the production of carrots may help plants to mitigate the adverse effects of water deficit stress.

show abstract

Section: Introductionmentioning

confidence: 89%

Morpho-physiological changes in carrots by foliar γ-aminobutyric acid under drought stress

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The present ndings demonstrated that cellular injuries imposed by salinity is mitigated by GABA as shown by lower MDA content and higher MSI percentage. The alleviative impact of GABA under salinity stress has been also reported in rice (Sheteiwy et al 2019), poplar (Ji et al 2018), wheat (Wang et al 2019), and muskmelon (Jin et al 2019).…”

Section: Discussionmentioning

confidence: 66%

“…First, GABA may act mainly as an osmo-protectant in a non-enzymatic manner to cope with the adverse effects of salinity, which decrease need to the antioxidative protection system. On the other hand, it has been hypothesized that GABA induces salt-tolerance through the regulation of ion channels with high selectivity for K + over Na + to keep a modest accumulation of Na + in plant tissues and to keep a high K + / Na + ratio (Wang et al 2019). The lower Na + accumulation in leaves decreases ROS generation and in turn, reduces the activity of antioxidant enzymes.…”

Section: Discussionmentioning

confidence: 99%

Gamma Aminobutyric Acid (GABA) and Salinity Impacts Physiological Response and Expression of Salinity-Related Genes in Strawberry cv. Aromas

Golnari¹,

Vafaee²,

Nazari³

et al. 2021

Preprint

View full text Add to dashboard Cite

Salinity is one of the most crucial abiotic stresses which is the consequence of increase in the concentration of NaCl ions influencing plant’s growth, development, and yield. Gama-butyric acid gamma (GABA) is a non-protein amino acid involved in various metabolic processes that accumulates in many plant species during stress conditions. The present study was aimed to evaluate the effect of GABA (0 and 25 mM) and salinity (3 and 5 dS/m) on physiological characteristics and expression pattern of some salinity-related genes in strawberry cv. Aromas under soilless culture condition 12, 24, and 36 h after treatments’ initiation. Based on the results, salinity increased the content of H2O2, MDA, and proline while it decreased the percentage of MSI and the activity of SOD and POD antioxidant enzymes. In contrast, the implementation of GABA not only decreased H2O2 and MDA content, and maintained MSI percentage, but also it improved the activity of antioxidant enzymes and the transcription level of DREB, cAPX, MnSOD, and GST genes. Under non-stress conditions, GABA acted as a mild stressor by imposing effects similar to abiotic stress which could help plants adapt under the adverse environmental conditions. We concluded that strawberry plants represented a higher salinity tolerance by enhancing both enzymatic and non-enzymatic antioxidant physiological protection mechanisms and also by increasing the transcription of salinity-related genes upon GABA application.

show abstract

“…Additionally, GABA can alleviate the inhibition caused by salt stress in wheat through ion balance modifications [38] . In the present study, under favourable incubation conditions, exogenous GABA promoted wheat seed germination, and remarkably, it continued to enhance germination even when wheat seeds were subjected to the demanding conditions of both salt stress (50 mM NaCl) and high temperature (35°C).…”

Section: Discussionmentioning

confidence: 99%

Gamma-aminobutyric acid improves wheat seed germination under salinity and heat stress

Yu,

Lian,

et al. 2023

Preprint

View full text Add to dashboard Cite

High abiotic stress can decrease germination rate (GR), whereas low salinity or heat stress can enhance GR. Under the dual stress conditions of salinity (50 mM NaCl) and high temperature (35°C), the influence of gamma-aminobutyric acid (GABA) on wheat seed germination was examined. Low salinity (50 mM NaCl) arrested GR at high temperatures (35°C), whereas exogenous GABA improved GR under combined salinity (50 mM NaCl) and high temperature (35°C) stress. Additionally, improved seed germination associated with GABA could be attenuated by abscisic acid (ABA), dimethylthiourea (a reactive oxygen species [ROS] scavenger), and diphenyliodonium or imidazole (two NADPH oxidase inhibitors). Conversely, GABA-enhanced germination could be improved further by H2O2, diethyldithiocarbamic acid (a superoxide dismutase [SOD] inhibitor), aminotriazole (a catalase [CAT] inhibitor), fluridone (an ABA inhibitor), or gibberellin. In addition, GABA reversed the reduced H2O2 and enhanced ABA accumulation in wheat seeds, and GABA accumulation and glutamate decarboxylase activities were improved by exogenous GABA. Inhibited SOD and CAT activities were potentially reversed by GABA via the upregulation of MnSOD and CAT expression levels. According to the results, elevated antioxidant enzyme activities and ROS mediated by NADPH oxidase are essential for enhancing wheat seed germination through the application of GABA under the conditions of combined salt and high-temperature stress.

show abstract

Effects of Exogenous Gamma-Aminobutyric Acid on Absorption and Regulation of Ion in Wheat Under Salinity Stress

Cited by 5 publications

References 31 publications

Morpho-physiological changes in carrots by foliar γ-aminobutyric acid under drought stress

Morpho-physiological changes in carrots by foliar γ-aminobutyric acid under drought stress

Gamma Aminobutyric Acid (GABA) and Salinity Impacts Physiological Response and Expression of Salinity-Related Genes in Strawberry cv. Aromas

Gamma-aminobutyric acid improves wheat seed germination under salinity and heat stress

Contact Info

Product

Resources

About