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Huang L, Huang L, Zhao L, Qin Y, Su Y, Yan Q. The regulation of oxidative phosphorylation pathway on Vibrio alginolyticus adhesion under adversities. Microbiologyopen 2019; 8:e00805. [PMID: 30767412 PMCID: PMC6692554 DOI: 10.1002/mbo3.805] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 01/09/2019] [Accepted: 01/11/2019] [Indexed: 02/03/2023] Open
Abstract
Vibrio alginolyticus is one of the most important pathogens in mariculture and leading to heavy losses. After treatment with Cu2+, Pb2+, and low pH, the expression of oxidative phosphorylation pathway genes, including coxA, coxB, coxC, ccoN, ccoO, and ccoQ, was found commonly downregulated by RNA‐seq as well as quantitative real‐time PCR. RNAi significantly reduced the expression of coxA, coxB, coxC, ccoN, ccoO, and ccoQ in V. alginolyticus. Compared with the wild‐type strain, the adhesion abilities of RNAi strains of V. alginolyticus were significantly impaired, as well as their cytochrome C oxidase activity. ccoQ appeared to be more important in the regulation of bacterial adhesion in these target genes, while ccoO was relatively weak in the regulation of the adhesion. Meanwhile, the changes of temperature, salinity, pH, and starvation affected coxA, coxB, coxC, ccoN, ccoO, and ccoQ expression remarkably. These findings indicated that: the oxidative phosphorylation pathway is a critical regulator of adhesion in V. alginolyticus; coxA, coxB, coxC, ccoN, ccoO, and ccoQ regulate the bacterial adhesion in response to environmental changes such as temperature, salinity, pH, and starvation.
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Affiliation(s)
- Li Huang
- State Key Laboratory of Large Yellow Croaker Breeding, Ningde, Fujian, China.,Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, Fujian, China
| | - Lixing Huang
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, Fujian, China
| | - Lingmin Zhao
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, Fujian, China
| | - Yingxue Qin
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, Fujian, China
| | - Yongquan Su
- State Key Laboratory of Large Yellow Croaker Breeding, Ningde, Fujian, China
| | - Qingpi Yan
- State Key Laboratory of Large Yellow Croaker Breeding, Ningde, Fujian, China.,Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, Fujian, China
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Zarbiv G, Li H, Wolf A, Cecchini G, Caplan SR, Sourjik V, Eisenbach M. Energy complexes are apparently associated with the switch-motor complex of bacterial flagella. J Mol Biol 2011; 416:192-207. [PMID: 22210351 DOI: 10.1016/j.jmb.2011.12.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Revised: 12/12/2011] [Accepted: 12/13/2011] [Indexed: 01/27/2023]
Abstract
Recently, the switch-motor complex of bacterial flagella was found to be associated with a number of non-flagellar proteins, which, in spite of not being known as belonging to the chemotaxis system, affect the function of the flagella. The observation that one of these proteins, fumarate reductase, is essentially involved in electron transport under anaerobic conditions raised the question of whether other energy-linked enzymes are associated with the switch-motor complex as well. Here, we identified two additional such enzymes in Escherichia coli. Employing fluorescence resonance energy transfer in vivo and pull-down assays invitro, we provided evidence for the interaction of F(0)F(1) ATP synthase via its β subunit with the flagellar switch protein FliG and for the interaction of NADH-ubiquinone oxidoreductase with FliG, FliM, and possibly FliN. Furthermore, we measured higher rates of ATP synthesis, ATP hydrolysis, and electron transport from NADH to oxygen in membrane areas adjacent to the flagellar motor than in other membrane areas. All these observations suggest the association of energy complexes with the flagellar switch-motor complex. Finding that deletion of the β subunit in vivo affected the direction of flagellar rotation and switching frequency further implied that the interaction of F(0)F(1) ATP synthase with FliG is important for the function of the switch of bacterial flagella.
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Affiliation(s)
- Gabriel Zarbiv
- Department of Biological Chemistry, The Weizmann Institute of Science, 76100 Rehovot, Israel
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Powell MA, Somero GN. Hydrogen Sulfide Oxidation Is Coupled to Oxidative Phosphorylation in Mitochondria of Solemya reidi. Science 2010; 233:563-6. [PMID: 17820467 DOI: 10.1126/science.233.4763.563] [Citation(s) in RCA: 120] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Solemya reidi, a gutless clam found in sulfide-rich habitats, contains within its gills bacterial symbionts thought to oxidize sulfur compounds and provide a reduced carbon food source to the clam. However, the initial step or steps in sulfide oxidation occur in the animal tissue, and mitochondria isolated from both gill and symbiont-free foot tissue of the clam coupled the oxidation of sulfide to oxidative phosphorylation [adenosine triphosphate (ATP) synthesis]. The ability of Solmya reidi to exploit directly the energy in sulfide for ATP synthesis is unprecedented, and suggests that sulfide-habitat animals that lack bacterial symbionts may also use sulfide as an inorganic energy source.
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Stenberg E, Styrvold OB, Strøm AR. Trimethylamine oxide respiration in Proteus sp. strain NTHC153: electron transfer-dependent phosphorylation and L-serine transport. J Bacteriol 1982; 149:22-8. [PMID: 6798018 PMCID: PMC216587 DOI: 10.1128/jb.149.1.22-28.1982] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Cells of Proteus sp. strains NTHC153 grown anaerobically with glucose and trimethylamine oxide (TMAO) were converted to spheroplasts by the penicillin method. The spheroplasts were lysed by osmotic shock, and the membrane vesicles were purified by sucrose gradient centrifugation. Vesicles energized electron transfer from formate to TMAO displayed active anaerobic transport of serine. An anaerobic cell-free extract of Proteus sp. disrupted in a French pressure cell reduced TMAO with formate and NADH with the concomitant formation of organic phosphate. The net P/2e- ratios determined were 0.1 and 0.3, respectively. The NADH- and TMAO-dependent phosphorylation was sensitive to uncouplers of oxidative phosphorylation (protonophores), and the formate- and TMAO-dependent serine transport was sensitive to ionophores and protonophores. We conclude that TMAO reduction in Proteus sp. fulfills the essential features of anaerobic respiration.
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