Effects of an exopolysaccharide from Lactococcus lactis Z-2 on innate immune response, antioxidant activity, and disease resistance against Aeromonas hydrophila in Cyprinus carpio L.

Feng, Junchang; Cai, Zhongliang; Chen, Yongyan; Zhu, Huimin; Chang, Xulu; Wang, Xianfeng; Liu, Zhen; Zhang, Jianxin; Nie, Guoxing

doi:10.1016/j.fsi.2020.01.037

Cited by 45 publications

(27 citation statements)

References 64 publications

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“…Exopolysaccharides (EPS) are used in medicine, food, and other industrial products due to their unique chemical, physical, and biological activities [ 1 ]. The diversity of EPS functions affects differences in chemical composition, in particular, the presence of different sugar residues, branching, chemical bond types, sugar modification, and chain length, all of which are determined through complex biosynthetic processes [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Functional Identification of the Dextransucrase Gene of Leuconostoc mesenteroides DRP105

Zhou

2020

IJMS

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Leuconostoc mesenteroides DRP105 isolated from Chinese sauerkraut juice is an intensive producer of dextran. We report the complete genome sequence of Leu. mesenteroides DRP105. This strain contains a dextransucrase gene (dsr) involved in the production of dextran, possibly composed of glucose monomers. To explore the dextran synthesis mechanism of Leu. mesenteroides DRP105, we constructed a dsr-deficient strain derived from Leu. mesenteroides DRP105 using the Cre-loxP recombination system. The secondary structure prediction results showed that Leu. mesenteroides DRP105 dextransucrase (Dsr) was coded by dsr and contained 17.07% α-helices, 29.55% β-sheets, 10.18% β-turns, and 43.20% random coils. We also analyzed the dextran yield, monosaccharide change, organic acid, and amino-acid content of Leu. mesenteroides DRP105 and Leu. mesenteroides DRP105−Δdsr. The result showed that the lack of dsr changed the Leu. mesenteroides DRP105 sugar metabolism pathway, which in turn affected the production of metabolites.

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Section: Introductionmentioning

confidence: 99%

Functional Identification of the Dextransucrase Gene of Leuconostoc mesenteroides DRP105

Zhou

2020

IJMS

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“…Likewise,Reda et al (2018) andZaineldin et al (2018) recorded that the addition of probiotic, B. subtilis, to fish diet enhances the non-immunity-specific by increasing the serum lysozyme level. Similarly,Feng et al (2020) mentioned that Lactococcus modulates immunity and has a strong antioxidant impact, on C. carpio L. through enhancing the production of nitric oxide (NO). Effect of Lactococcus lactis (33HT) on total serum protein, albumin and total serum globulin in Clarias gariepinus subchronically exposed to mercury (0.13 ppm) for 60 days…”

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confidence: 99%

Chelation of mercury intoxication and testing different protective aspects ofLactococcus lactisprobiotic in African catfish

El‐Bouhy

Reda

Mahboub

et al. 2021

Aquaculture Research

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“… 48 In certain investigations, bacterial EPS has also been shown to protect agricultural plants against the harmful effects of phagocytosis and infections. 49 , 50 …”

Section: Results and Discussionmentioning

confidence: 99%

Bacillus mojavensis, a Metal-Tolerant Plant Growth-Promoting Bacterium, Improves Growth, Photosynthetic Attributes, Gas Exchange Parameters, and Alkalo-Polyphenol Contents in Silver Nanoparticle (Ag-NP)-Treated Withania somnifera L. (Ashwagandha)

et al. 2022

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Discharge of nanoparticles (NPs) into aquatic and terrestrial ecosystems during manufacturing processes and from various commercial goods has become a significant ecotoxicological concern. After reaching soil systems, NPs cause deleterious effects on soil fertility, microbial activity, and crop productivity. Taking into consideration the medicinal importance of Withania somnifera (L.) (ashwagandha), the present study assessed the potential hazards of silver nanoparticles (Ag-NPs) and the toxicity amelioration by a metal-tolerant plant growth-promoting rhizobacterium (PGPR). Bacillus mojavensis BZ-13 (NCBI accession number MZ950923) recovered from metal-polluted rhizosphere soil, tolerated an exceptionally high level of Ag-NPs. The growth-regulating substances synthesized by B. mojavensis were increased with increasing concentrations (0–1000 μg mL –1 ) of Ag-NPs. Also, strain BZ-13 had the ability to form biofilm, produce alginate and exopolysaccharides (EPSs), as well maintain swimming and swarming motilities in the presence of Ag-NPs. Soil application of varying concentrations of Ag-NPs resulted in a dose-related reduction in growth and biochemical features of ashwagandha. In contrast, following soil inoculation, B. mojavensis relieved the Ag-NPs-induced phytotoxicity and improved plant productivity. Root, shoot length, dry biomass, and leaf area increased by 13, 17, 37, 25%, respectively, when B. mojavensis was applied with 25 mg/kg Ag-NPs when compared to noninoculated controls. Furthermore, the soil plant analysis development (SPAD) index, photosystem efficiency (Fv/Fm), PS II quantum yield (FPS II), photochemical quenching (qP), non-photochemical quenching (NpQ), and total chlorophyll and carotenoid content of BZ-13-inoculated plants in the presence of 25 mg Ag-NPs/kg increased by 33, 29, 41, 47, 35, 26, and 25%, respectively, when compared to noninoculated controls that were exposed to the same amounts of NPs. In addition, a significant ( p ≤ 0.05) increase in 48, 18, 21, and 19% in withaferin-A (alkaloids), flavonoids, phenols, and tannin content, respectively, was recorded when plants were detached from bacterized and Ag-NP-treated plants. Leaf gas exchange parameters were also modulated in the case of inoculated plants. Furthermore, bacterial inoculation significantly decreased proline, lipid peroxidation, antioxidant enzymes, and Ag-NP’s absorption and build-up in phyto-organs. In conclusion, soil inoculation with B. mojavensis may possibly be used as an alternative to protect W. somnifera plants in soil contaminated with nanoparticles. Therefore, phytohormone and other biomolecule-synthesizing and NP-tolerant PGPR strains like B. mojavensis might serve as an agronomically significant and cost-effective remediation agent for augmenting the yield and productivity of med...

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Effects of an exopolysaccharide from Lactococcus lactis Z-2 on innate immune response, antioxidant activity, and disease resistance against Aeromonas hydrophila in Cyprinus carpio L.

Cited by 45 publications

References 64 publications

Functional Identification of the Dextransucrase Gene of Leuconostoc mesenteroides DRP105

Functional Identification of the Dextransucrase Gene of Leuconostoc mesenteroides DRP105

Chelation of mercury intoxication and testing different protective aspects ofLactococcus lactisprobiotic in African catfish

Bacillus mojavensis, a Metal-Tolerant Plant Growth-Promoting Bacterium, Improves Growth, Photosynthetic Attributes, Gas Exchange Parameters, and Alkalo-Polyphenol Contents in Silver Nanoparticle (Ag-NP)-Treated Withania somnifera L. (Ashwagandha)

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