Structural characterization and bioactivity of novel exopolysaccharides produced by Tetragenococcus halophilus

Zhang, Min; Zeng, Siyuan; Hao, Liang; Yao, Shangjie; Wang, Dingkang; Yang, Huan; Wu, Chongde

doi:10.1016/j.foodres.2022.111083

Cited by 19 publications

(8 citation statements)

References 30 publications

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“…On the basis of related literature and methylation analysis (Figure 4a,b), the H1/C1 signals of PCP at δ 4.98/97.89 ppm, δ 5.17/102.57 ppm, and δ 5.12/102.34 ppm were possibly associated with 1,6‐α‐ d ‐Gal p , 1,2,6‐α‐ d ‐Glc p , and T‐α‐ d ‐Man p , respectively (Cheng et al, 2021; Pan et al, 2012). In Figure 4c,d, the anomeric proton signals (δ 4.70 and 4.53 ppm)and the anomeric carbon signals (δ 102.57 and 102.85 ppm) were attributed to the H‐1 and C‐1 of 1,3‐β‐ d ‐Glc p and T‐β‐ d ‐Glc p , respectively (Samanta et al, 2013; Zhang et al, 2022). Moreover, the signals between δ 61 and 103 ppm were ascribed to C‐1–C‐6 of the 1,3‐β‐ d ‐glucan (Chen et al, 2010).…”

Section: Resultsmentioning

confidence: 99%

“…Nevertheless, the range of δ H 4.0-4.7 ppm indicated that the glycosidic linkages of SEPCP were primarily β-configurations, which was in accordance with the FT-IR results. As illustrated in Figure 4a (Samanta et al, 2013;Zhang et al, 2022). Moreover, the signals between δ 61 and 103 ppm were ascribed to C-1-C-6 of the 1,3βd-glucan (Chen et al, 2010).…”

Section: Nmr Spectroscopy Analysismentioning

confidence: 87%

“…Figure 4c,d, the anomeric proton signals (δ 4.70 and 4.53 ppm)and the anomeric carbon signals (δ 102.57 and 102.85 ppm) were attributed to the H-1 and C-1 of 1,3βd-Glcp and Tβd-Glcp, respectively(Samanta et al, 2013;Zhang et al, 2022). Moreover,…”

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confidence: 91%

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Effect of steam explosion pretreatment on polysaccharide isolated from Poria cocos : Structure and immunostimulatory activity

Liang

Zhao

Xie

et al. 2022

Journal of Food Biochemistry

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This study aimed to examine the effects of steam explosion (SE) pretreatment on the structural characteristics and immunostimulatory activity of polysaccharide from Poria cocos. Results showed that the average molecular weights of native polysaccharide (PCP) and SE-pretreated polysaccharide (SEPCP) were 18.67 and 6.52 kDa, respectively. PCP and SEPCP shared the same profiles of monosaccharides (mannose, glucose, galactose, and fucose) in different composition ratios, that is, PCP in a molar

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Section: Resultsmentioning

confidence: 99%

Section: Nmr Spectroscopy Analysismentioning

confidence: 87%

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Effect of steam explosion pretreatment on polysaccharide isolated from Poria cocos : Structure and immunostimulatory activity

Liang

Zhao

Xie

et al. 2022

Journal of Food Biochemistry

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“…The altered expressions of a total of 70 genes and 63 proteins involved in carbohydrate intake and metabolism and energy metabolism pathways were observed. Zhang et al 21 identified two types of heteropolysaccharides (EPS-1 and EPS-2) produced by T. halophilus. EPS-1 was composed of galactose, glucose, mannose, and glucuronic acid, and EPS-2 was composed of glucose and mannose.…”

Section: Discussionmentioning

confidence: 99%

Improvement of the viability of Tetragenococcus halophilus under acidic stress by forming the biofilm cell structure based on RNA‐Seq and iTRAQ analyses

Yao,

Tu,

Jin

et al. 2024

J Sci Food Agric

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BACKGROUNDTetragenococcus halophilus is a halophilic lactic acid bacterium (LAB) isolated from soya sauce moromi. During the production of these fermented foods, acid stress is an inevitable environmental stress. In our previous study, T. halophilus could form biofilms and the cells in biofilms exhibited higher cell viability under multiple environmental stress including acid stress.RESULTSIn this study, the effect of preformed T. halophilus biofilms on cell survival, cellular structure, intracellular environment, and the expression of genes and proteins under acid stress was investigated. The result showed that acid stress with pH 4.30 for 1.5 h reduced live T. halophilus cell count and caused cellular structure damage. However, T. halophilus biofilm cells exhibited greater cell survival under acid stress than the planktonic cells, and biofilm formation reduced the damage of acid stress to the cell membrane and cell wall. The biofilm cells maintained a higher level of H+‐ATPase activity and intracellular ammonia concentration after acid stress. The RNA‐Seq and iTRAQ technologies revealed that the genes and proteins associated with ATP production, the uptake of trehalose and N‐acetylmuramic acid, the assembly of H+‐ATPase, amino acid biosynthesis and metabolism, ammonia production, fatty acid biosynthesis, CoA biosynthesis, thiamine production, and acetoin biosynthesis might be responsible for the stronger acid tolerance of T. halophilus biofilm cells together.CONCLUSIONThese findings provided help for further understanding the mechanisms that allowed LAB biofilm cells to resist environmental stress.This article is protected by copyright. All rights reserved.

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“…These highly salinity resilient microbial communities spread across genera Halomonas, Halothermothrix, Halobacillus Pseudoalteromonas, Arthrobacter, Vibrio, Salipiger, Chromohalobacter Streptomyces Bacillus, Viribacillus, Nesterenkonia, and many more genera with fewer halophilic members (Liu et al, 2019;López-Ortega et al, 2021). A 6% NaCl content triggered EPS production in Tetragenococcus halophilus isolated from soya sauce moromi with 52.7% recovery (both fractions) consisting of glucose, galactose, mannose, and glucuronic acid (Zhang et al, 2022). Similarly, Chromohalobacter japonicus isolated from a rock salt waste accumulated ectoine, trehalose, N(4)-acetyl-l-2,4diaminobutyrate, alanine, valine hydroxyectoine, and glutamate (compatible solutes) in the presence of 5% NaCl (Ananina et al, 2021).…”

Section: Effect Of Salinity On Plant-microbe Interactionmentioning

confidence: 99%

Impact of key parameters involved with plant-microbe interaction in context to global climate change

Shree

Unnikrishnan²,

Bhushan³

2022

Front. Microbiol.

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Anthropogenic activities have a critical influence on climate change that directly or indirectly impacts plant and microbial diversity on our planet. Due to climate change, there is an increase in the intensity and frequency of extreme environmental events such as temperature rise, drought, and precipitation. The increase in greenhouse gas emissions such as CO2, CH4, NOx, water vapor, increase in global temperature, and change in rainfall patterns have impacted soil–plant-microbe interactions, which poses a serious threat to food security. Microbes in the soil play an essential role in plants’ resilience to abiotic and biotic stressors. The soil microbial communities are sensitive and responsive to these stressors. Therefore, a systemic approach to climate adaptation will be needed which acknowledges the multidimensional nature of plant-microbe-environment interactions. In the last two scores of years, there has been an enhancement in the understanding of plant’s response to microbes at physiological, biochemical, and molecular levels due to the availability of techniques and tools. This review highlights some of the critical factors influencing plant-microbe interactions under stress. The association and response of microbe and plants as a result of several stresses such as temperature, salinity, metal toxicity, and greenhouse gases are also depicted. New tools to study the molecular complexity of these interactions, such as genomic and sequencing approaches, which provide researchers greater accuracy, reproducibility, and flexibility for exploring plant-microbe–environment interactions under a changing climate, are also discussed in the review, which will be helpful in the development of resistant crops/plants in present and future.

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Structural characterization and bioactivity of novel exopolysaccharides produced by Tetragenococcus halophilus

Cited by 19 publications

References 30 publications

Effect of steam explosion pretreatment on polysaccharide isolated from Poria cocos : Structure and immunostimulatory activity

Effect of steam explosion pretreatment on polysaccharide isolated from Poria cocos : Structure and immunostimulatory activity

Improvement of the viability of Tetragenococcus halophilus under acidic stress by forming the biofilm cell structure based on RNA‐Seq and iTRAQ analyses

Impact of key parameters involved with plant-microbe interaction in context to global climate change

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