Metabolic and molecular basis for the salt and alkali responses of Suaeda corniculata

Zang, Wei; Miao, Rongqing; Zhang, Yue; Yuan, Yawei; Pang, Qiuying; Zhou, Zhiqiang

doi:10.1016/j.envexpbot.2021.104643

Cited by 16 publications

(10 citation statements)

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“…The AsA-GSH cycle, comprising nonenzymatic antioxidants (AsA and GSH) and four enzymatic antioxidants (APX, DHAR, MDHAR, and GR), has been demonstrated to play a crucial role in maintaining redox homeostasis in most plants subjected to SS and AS (Wang et al, 2022;Zang et al, 2021;Zhang et al, 2020) that high ratios of GSH/GSSG and/or AsA/DHA may be crucial for effectively preventing the accumulation of abiotic stress-induced ROS (Fotopoulos et al, 2010). In the present study, SS led to increased levels of AsA and GSH, along with elevated AsA/DHA and GSH/GSSG ratios, as well as increased activities of APX, DHAR, MDHAR, and GR, all of which contributed to ROS scavenging.…”

Section: Increased Ros In Grapevine Under Ss and As Leads To Oxidativ...mentioning

confidence: 99%

Integrated transcriptome and metabolome analysis reveals antioxidant machinery in grapevine exposed to salt and alkali stress

Chen

et al. 2023

Physiologia Plantarum

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Plant acclimation to salt and alkali stress is closely linked to the ability of the antioxidant system to mediate the scavenging of reactive oxygen species (ROS). In this study, we investigated the effects of salt stress and alkali stress on ROS, antioxidant enzymes, transcriptome, and metabolome. The results showed that the levels of superoxide anions, hydrogen peroxide, malondialdehyde, and electrolyte leakage increased under salt and alkali stress, with higher concentrations observed under alkali stress than salt stress. The activities of superoxide dismutase (EC 1.15.1.1), peroxidase (EC 1.11.1.7), catalase (EC 1.11.1.6), ascorbate peroxidase (EC 1.11.1.11), glutathione reductase (EC 1.6.4.2), dehydroascorbate reductase (EC 1.8.5.1), and monodehydroascorbate reductase (EC 1.6.5.4) varied under salt and alkali stress. The transcriptome analysis revealed the induction of signal transduction and metabolic processes and differential expression of genes encoding antioxidant enzymes in response to salt and alkali stress. The metabolome analysis demonstrated increased ascorbic acid and glutathione under salt stress, while most phenolic acids, flavonoids, and alkaloids increased under salt and alkali stress. Integrative analysis of the metabolome and transcriptome data revealed that the flavonoid biosynthesis pathway played a key role in the grapevine's response to salt stress. The total flavonoid content increased under salt and alkali stress, but the accumulation of flavonoids was higher under salt stress than alkali stress. In conclusion, our findings indicate significant differences in the antioxidant defense of grapevines under these two stresses, providing insight into distinct acclimation mechanisms in grapevine under salt and alkali stress.

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Section: Increased Ros In Grapevine Under Ss and As Leads To Oxidativ...mentioning

confidence: 99%

Integrated transcriptome and metabolome analysis reveals antioxidant machinery in grapevine exposed to salt and alkali stress

Chen

et al. 2023

Physiologia Plantarum

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“…The accumulation of deoxynucleosides like deoxycytidine, deoxyadenosine, and deoxyguanosine may be related to the repair of damaged DNA under stress [ 35 ]. In addition, studies have shown that salt stress promotes the biosynthesis of purine and pyrimidine nucleotides and provides ATP energy for plants [ 36 ], In L. chinensis seedlings, the contents of metabolites involved in the TCA cycle and glycolysis significantly decreased under alkali stress, indicating that alkali stress inhibited the energy production pathway, resulting in the decrease of ATP and other energy substances, Zang et al [ 37 ] also found that the energy supply correlated pathways, including glycolysis and TCA cycle, were impacted by salt and alkali stress in Suaeda corniculata seedings. However, the results of ATP content showed opposite results, with a significant increase in the ATP content of seedlings under alkali stress.…”

Section: Discussionmentioning

confidence: 99%

Physiological and Metabolic Responses of Leymus chinensis Seedlings to Alkali Stress

Yan

Shi

Chen

et al. 2022

Plants

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To elucidate the physiological and metabolic mechanism of perennial grass responses to alkali stress, we selected Leymus chinensis (L. chinensis), a salt-tolerant perennial rhizomatous species of the family Poaceae as experimental material. We conducted a pot experiment in a greenhouse and measured the biomass, physiological characteristics, metabonomic, and corresponding metabolites. Our results showed that alkali stress significantly inhibited seedling growth and photosynthesis, which caused ion imbalance and carbon deficiency, but the alkali stress significantly increased the nitrogen and ATP contents. The metabolic analysis indicated that alkali stress markedly enhanced the contents of nucleotides, amino acids, and organic acids, but it decreased soluble sugar contents. Pathway enrichment analysis showed that the glutamine synthetase/glutamate synthase (GS/GOGAT) cycle, which was related to nitrogen metabolism, was most significantly affected by alkali stress. The contents of glutamine synthetase (GS) and glutamate synthetase (GOGAT) involved in this pathway were also significantly increased. Our results not only verified the important roles of some amino acids and organic acids in resisting alkali stress, but also further proved that nucleotides and the GS/GOGAT cycle related to nitrogen metabolism played critical roles for seedlings in response to alkali stress.

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“…It has been reported that the expression levels of proline synthesis key enzyme gene SsP5CS (Δ1-dihydropyrrole-5 carboxylic acid synthase) and inositol synthesis key enzyme gene SsINPS are significantly increased in S. salsa in saline environments [ 61 , 62 ] Under high salinity (500 mM), S. salsa can accumulate organic acids, soluble sugars, lipid metabolites, and unsaturated fatty acids [ 63 ], as well as sucrose [ 56 ], helping the plant to deal with osmotic stress and increasing its nutritional value. However, in S. corniculata , the soluble sugars were downregulated after salt stress [ 64 , 65 ]. These results suggest that Suaeda plants enhance their resistance to osmotic stress by regulation of osmolytes under salinity conditions [ 56 ].…”

Section: Osmotic Adjustment Of Organic Solutesmentioning

confidence: 99%

“…Serine concentration was higher in S. monoica compared with S. fruticosa under saline conditions [ 117 ]. In S. corniculate , 21 metabolites were identified under conditions of salinity, including amino acids, carbohydrates, organic osmolyte, and intermediates in the tricarboxylic acid (TCA) cycle, among others (e.g., ethanol, dimethylamine O-phosphocholine, and choline) [ 65 ].…”

Section: Omics Approachesmentioning

confidence: 99%

“…The differences of metabolic responses between the roots and aboveground parts of S. salsa seedlings suggest different regulating mechanisms in various tissues under salt treatment [ 58 ]. Moreover, studies have shown that high salinity can lead to accumulation of more amino acids (500 mM > 200 mM > 0 mM) in S. salsa [ 63 ], and increases in leucine, isoleucine, valine, and glutamine in S. corniculata seedlings [ 65 ].…”

Section: Omics Approachesmentioning

confidence: 99%

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Research Advances on Molecular Mechanism of Salt Tolerance in Suaeda

Zhang

et al. 2022

Biology

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Plant growth and development are inevitably affected by various environmental factors. High salinity is the main factor leading to the reduction of cultivated land area, which seriously affects the growth and yield of plants. The genus Suaeda is a kind of euhalophyte herb, with seedlings that grow rapidly in moderately saline environments and can even survive in conditions of extreme salinity. Its fresh branches can be used as vegetables and the seed oil is rich in unsaturated fatty acids, which has important economic value and usually grows in a saline environment. This paper reviews the progress of research in recent years into the salt tolerance of several Suaeda species (for example, S. salsa, S. japonica, S. glauca, S. corniculata), focusing on ion regulation and compartmentation, osmotic regulation of organic solutes, antioxidant regulation, plant hormones, photosynthetic systems, and omics (transcriptomics, proteomics, and metabolomics). It helps us to understand the salt tolerance mechanism of the genus Suaeda, and provides a theoretical foundation for effectively improving crop resistance to salt stress environments.

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Metabolic and molecular basis for the salt and alkali responses of Suaeda corniculata

Cited by 16 publications

References 50 publications

Integrated transcriptome and metabolome analysis reveals antioxidant machinery in grapevine exposed to salt and alkali stress

Integrated transcriptome and metabolome analysis reveals antioxidant machinery in grapevine exposed to salt and alkali stress

Physiological and Metabolic Responses of Leymus chinensis Seedlings to Alkali Stress

Research Advances on Molecular Mechanism of Salt Tolerance in Suaeda

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