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Iquebal MA, Passari AK, Jagannadham J, Ahmad F, Leo VV, Singh G, Jaiswal S, Rai A, Kumar D, Singh BP. Microbiome of Pukzing Cave in India shows high antimicrobial activity against plant and animal pathogens. Genomics 2021; 113:4098-4108. [PMID: 34699904 DOI: 10.1016/j.ygeno.2021.10.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 09/27/2021] [Accepted: 10/05/2021] [Indexed: 10/20/2022]
Abstract
Pukzing cave, the largest cave of Mizoram, India was explored for bacterial diversity. Culture dependent method revealed 235 bacterial isolates using three different treatments. Identity of the microbial species was confirmed by 16S rDNA sequencing. The highest bacterial population was recovered from heat treatment (n = 97;41.2%) followed by normal (n = 79;33.6%) and cold treatment (n = 59;25.1%) indicating dominance of moderate thermophiles. Antimicrobial potential of isolates showed 20.4% isolates having antimicrobial ability against tested pathogens. Amplicon sequencing of PKSI, PKSII and NRP specific genes revealed presence of AMP genes in the microbial population. Six microbial pathogens were selected for screening as they are well known for different disease cause organism in various fields such as agriculture and human health. Cave environment harbors unique microbial flora and hypervariable region V4 is more informative. Higher activity of AMP assay against these microbes indicates that cave microbial communities could be potential source of future genomic resources.
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Affiliation(s)
- M A Iquebal
- Centre for Agricultural Bioinformatics, ICAR-Indian Agricultural Statistics Research Institute, New Delhi, India
| | - Ajit Kumar Passari
- Department of Biotechnology, Aizawl, Mizoram University, Mizoram, India; Departamento de Biología Molecular y Biotecnología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México (UNAM), Mexico 04510, Mexico
| | - Jaisri Jagannadham
- Centre for Agricultural Bioinformatics, ICAR-Indian Agricultural Statistics Research Institute, New Delhi, India
| | - Farzana Ahmad
- Department of Biotechnology, Aizawl, Mizoram University, Mizoram, India
| | | | - Garima Singh
- Department of Botany, Pachhunga University College, Mizoram University, Aizawl 796001, Mizoram, India
| | - Sarika Jaiswal
- Centre for Agricultural Bioinformatics, ICAR-Indian Agricultural Statistics Research Institute, New Delhi, India
| | - Anil Rai
- Centre for Agricultural Bioinformatics, ICAR-Indian Agricultural Statistics Research Institute, New Delhi, India
| | - Dinesh Kumar
- Centre for Agricultural Bioinformatics, ICAR-Indian Agricultural Statistics Research Institute, New Delhi, India.
| | - Bhim Pratap Singh
- Department of Biotechnology, Aizawl, Mizoram University, Mizoram, India; Department of Agriculture and Environmental Sciences, National Institute of Food Technology Entrepreneurship and Management (NIFTEM), Kundli, Sonipat 131028, Haryana, India.
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Liu Y, Ma Y, Chen Z, Li D, Liu W, Huang L, Zou C, Cao MJ, Liu GM, Wang Y. Antibacterial Activity of Sulfated Galactans from Eucheuma serra and Gracilari verrucosa against Diarrheagenic Escherichia coli via the Disruption of the Cell Membrane Structure. Mar Drugs 2020; 18:E397. [PMID: 32751049 PMCID: PMC7459719 DOI: 10.3390/md18080397] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 12/28/2022] Open
Abstract
Seaweed sulfated polysaccharides have attracted significant attention due to their antibacterial activity. This work investigated the antibacterial activity and mechanism of depolymerized sulfated galactans from Eucheuma serra (E. serra) and Gracilaria verrucosa (G. verrucosa) against enterotoxigenic Escherichia coli (ETEC) K88. The results show that removing the metal ions improves the anti-ETEC K88 activity of the galactans. The fluorescence labeling study confirmed that the sulfated galactans penetrated the cell walls and eventually reached the interior of the ETEC K88. Nucleic acid staining and intracellular protein leakage were also observed, indicating the destruction of permeability and integrity of the cell membrane. Interestingly, the two polysaccharides exhibited no effect on the proliferation of the selected Gram-positive bacteria and yeast. This indicates that the cell wall structure of the microorganisms could influence the bacteriostatic activity of the sulfated polysaccharides, as well. These results suggest that the sulfated seaweed polysaccharides might have potential application value in antibacterial diarrhea.
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Affiliation(s)
- Yixiang Liu
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, Fujian, China; (Y.M.); (Z.C.); (D.L.); (W.L.); (L.H.); (C.Z.); (M.-J.C.); (G.-M.L.)
- Xiamen Key Laboratory of Marine Functional Food, Xiamen 361021, Fujian, China
- National & Local Joint Engineering Research Center of Deep Processing Technology for Aquatic Products, Xiamen 361021, Fujian, China
| | - Yu Ma
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, Fujian, China; (Y.M.); (Z.C.); (D.L.); (W.L.); (L.H.); (C.Z.); (M.-J.C.); (G.-M.L.)
| | - Zhaohua Chen
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, Fujian, China; (Y.M.); (Z.C.); (D.L.); (W.L.); (L.H.); (C.Z.); (M.-J.C.); (G.-M.L.)
| | - Donghui Li
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, Fujian, China; (Y.M.); (Z.C.); (D.L.); (W.L.); (L.H.); (C.Z.); (M.-J.C.); (G.-M.L.)
| | - Wenqiang Liu
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, Fujian, China; (Y.M.); (Z.C.); (D.L.); (W.L.); (L.H.); (C.Z.); (M.-J.C.); (G.-M.L.)
| | - Ling Huang
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, Fujian, China; (Y.M.); (Z.C.); (D.L.); (W.L.); (L.H.); (C.Z.); (M.-J.C.); (G.-M.L.)
| | - Chao Zou
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, Fujian, China; (Y.M.); (Z.C.); (D.L.); (W.L.); (L.H.); (C.Z.); (M.-J.C.); (G.-M.L.)
| | - Min-Jie Cao
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, Fujian, China; (Y.M.); (Z.C.); (D.L.); (W.L.); (L.H.); (C.Z.); (M.-J.C.); (G.-M.L.)
- National & Local Joint Engineering Research Center of Deep Processing Technology for Aquatic Products, Xiamen 361021, Fujian, China
| | - Guang-Ming Liu
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, Fujian, China; (Y.M.); (Z.C.); (D.L.); (W.L.); (L.H.); (C.Z.); (M.-J.C.); (G.-M.L.)
- Xiamen Key Laboratory of Marine Functional Food, Xiamen 361021, Fujian, China
| | - Yanbo Wang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang, China;
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Liu Y, Liu W, Wang Y, Ma Y, Huang L, Zou C, Li D, Cao MJ, Liu GM. Inhibitory Effect of Depolymerized Sulfated Galactans from Marine Red Algae on the Growth and Adhesion of Diarrheagenic Escherichia coli. Mar Drugs 2019; 17:md17120694. [PMID: 31835446 PMCID: PMC6950454 DOI: 10.3390/md17120694] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 12/03/2019] [Accepted: 12/07/2019] [Indexed: 12/17/2022] Open
Abstract
Active polysaccharides as safe and natural polymers against bacterial diarrhea have been reconsidered as an alternative to antibiotics. This work investigated the inhibiting effect of depolymerized sulfated galactans from Eucheuma serra and Gracilaria verrucosa on the growth and adhesion of diarrheagenic enterotoxigenic Escherichia coli (ETEC) K88. Results showed that the sulfated polysaccharides with molecular weight distribution ≤20.0 kDa exhibited antibacterial activity against ETEC K88. A structure-activity study revealed that the anti-ETEC K88 activity of sulfated polysaccharides is strictly determined by their molecular weight distribution, sulfate group content, and monosaccharide composition. In addition, the promoted nucleic acid release and the fluorescence quenching of membrane proteins were observed after the treatment with selected polysaccharides. Scanning electron microscopy further confirmed that the depolymerized sulfated galactans can effectively inhibit ETEC K88 adhesion. In conclusion, depolymerized sulfated galactans exhibited an inhibitory effect on the growth and adhesion of ETEC K88.
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Affiliation(s)
- Yixiang Liu
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China (M.-J.C.); (G.-M.L.)
- Xiamen Key Laboratory of Marine Functional Food, Xiamen 361021, China
- Correspondence: ; Tel.: +86-0592-6181915; Fax: +86-0592-6180470
| | - Wenqiang Liu
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China (M.-J.C.); (G.-M.L.)
| | - Yanbo Wang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China;
| | - Yu Ma
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China (M.-J.C.); (G.-M.L.)
| | - Ling Huang
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China (M.-J.C.); (G.-M.L.)
| | - Chao Zou
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China (M.-J.C.); (G.-M.L.)
| | - Donghui Li
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China (M.-J.C.); (G.-M.L.)
| | - Min-Jie Cao
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China (M.-J.C.); (G.-M.L.)
| | - Guang-Ming Liu
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China (M.-J.C.); (G.-M.L.)
- Xiamen Key Laboratory of Marine Functional Food, Xiamen 361021, China
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