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Huang J, Wang J, Li G, Lai Q, Zhu X, Wang S, Liu X, Shao Z, Wang L. Pseudodonghicola flavimaris sp. nov. and Sedimentitalea xiamensis sp. nov., two novel species belonging to the family Roseobacteraceae. Int J Syst Evol Microbiol 2023; 73. [PMID: 38050805 DOI: 10.1099/ijsem.0.006192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2023] Open
Abstract
Two Gram-stain-negative, chemoheterotrophic, aerobic bacteria, designated IC7T and JM2-8T, were isolated from seawater of the Yellow Sea of China and rhizosphere soil of mangroves in Xiamen, Fujian, respectively. Phylogenetic analyses based on 16S rRNA gene and genome sequences showed that these two novel strains belonged to the family Roseobacteraceae. Strain IC7T formed a coherent lineage within the genus Pseudodonghicola, showing 98.05 % 16S rRNA gene sequence similarity to Pseudodonghicola xiamenensis Y-2T. Strain JM2-8T was most closely related to members of the genus Sedimentitalea, showing 96.51 and 96.73 % 16S rRNA gene sequence similarities to Sedimentitalea nanhaiensis NH52FT and Sedimentitalea todarodis KHS03T, respectively. The two novel strains contained Q-10 as the major quinone, and phosphatidylethanolamine, aminophospholipid, phosphatidylglycerol and phosphatidylcholine as the principal polar lipids. The main fatty acid of strain IC7T was C19 : 0 cyclo ω8c, while the fatty acid profile JM2-8T was dominated by summed feature 8 containing C18 : 1 ω7c and/or C18 : 1 ω6c. The average nucleotide identity and digital DNA-DNA hybridization values between these two novel isolates and their closely related species were below the cut-off values of 95-96 and 70 %, respectively. The combined genotypic and phenotypic data show that strain IC7T represents a novel species of the genus Pseudodonghicola, for which the name Pseudodonghicola flavimaris sp. nov. is proposed, with the type strain IC7T (=MCCC 1A02763T=KCTC 82844T), and strain JM2-8T represents a novel species of the genus Sedimentitalea, for which the name Sedimentitalea xiamensis sp. nov. is proposed, with the type strain JM2-8T (=MCCC 1A17756T=KCTC 82846T).
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Affiliation(s)
- Jiamei Huang
- School of Advanced Manufacturing, Fuzhou University, Jinjiang 362251, PR China
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of PR China, Xiamen, PR China
- State Key Laboratory Breeding Base of Marine Genetic Resources, Fujian Key Laboratory of Marine Genetic Resources, Xiamen 361005, PR China
| | - Jianning Wang
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of PR China, Xiamen, PR China
- State Key Laboratory Breeding Base of Marine Genetic Resources, Fujian Key Laboratory of Marine Genetic Resources, Xiamen 361005, PR China
| | - Guangyu Li
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of PR China, Xiamen, PR China
- State Key Laboratory Breeding Base of Marine Genetic Resources, Fujian Key Laboratory of Marine Genetic Resources, Xiamen 361005, PR China
| | - Qiliang Lai
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of PR China, Xiamen, PR China
- State Key Laboratory Breeding Base of Marine Genetic Resources, Fujian Key Laboratory of Marine Genetic Resources, Xiamen 361005, PR China
| | - Xuying Zhu
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of PR China, Xiamen, PR China
- State Key Laboratory Breeding Base of Marine Genetic Resources, Fujian Key Laboratory of Marine Genetic Resources, Xiamen 361005, PR China
| | - Shanshan Wang
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of PR China, Xiamen, PR China
- State Key Laboratory Breeding Base of Marine Genetic Resources, Fujian Key Laboratory of Marine Genetic Resources, Xiamen 361005, PR China
| | - Xiupian Liu
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of PR China, Xiamen, PR China
- State Key Laboratory Breeding Base of Marine Genetic Resources, Fujian Key Laboratory of Marine Genetic Resources, Xiamen 361005, PR China
| | - Zongze Shao
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of PR China, Xiamen, PR China
- State Key Laboratory Breeding Base of Marine Genetic Resources, Fujian Key Laboratory of Marine Genetic Resources, Xiamen 361005, PR China
| | - Liping Wang
- School of Advanced Manufacturing, Fuzhou University, Jinjiang 362251, PR China
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of PR China, Xiamen, PR China
- State Key Laboratory Breeding Base of Marine Genetic Resources, Fujian Key Laboratory of Marine Genetic Resources, Xiamen 361005, PR China
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Rontani JF, Bonin P. Cellular Damage of Bacteria Attached to Senescent Phytoplankton Cells as a Result of the Transfer of Photochemically Produced Singlet Oxygen: A Review. Microorganisms 2023; 11:1565. [PMID: 37375067 DOI: 10.3390/microorganisms11061565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 06/07/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023] Open
Abstract
Several studies set out to explain the presence of high proportions of photooxidation products of cis-vaccenic acid (generally considered to be of bacterial origin) in marine environments. These studies show that these oxidation products result from the transfer of singlet oxygen from senescent phytoplankton cells to the bacteria attached to them in response to irradiation by sunlight. This paper summarizes and reviews the key findings of these studies, i.e., the demonstration of the process at work and the effect of different parameters (intensity of solar irradiance, presence of bacterial carotenoids, and presence of polar matrices such as silica, carbonate, and exopolymeric substances around phytoplankton cells) on this transfer. A large part of this review looks at how this type of alteration of bacteria can affect the preservation of algal material in the marine environment, especially in polar regions where conditions drive increased transfer of singlet oxygen from sympagic algae to bacteria.
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Affiliation(s)
- Jean-François Rontani
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO UM 110, 13288 Marseille, France
| | - Patricia Bonin
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO UM 110, 13288 Marseille, France
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Jeong J, Weerawongwiwat V, Kim JH, Suh MK, Kim HS, Lee JS, Yoon JH, Sukhoom A, Kim W. Arenibacterium arenosum sp. nov., isolated from sea sand. Arch Microbiol 2022; 204:147. [DOI: 10.1007/s00203-022-02760-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 01/06/2022] [Accepted: 01/06/2022] [Indexed: 11/02/2022]
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Amiraux R, Patricia B, Christopher B, Jean-François R. Use of Stress Signals of Their Attached Bacteria to Monitor Sympagic Algae Preservation in Canadian Arctic Sediments. Microorganisms 2021; 9:microorganisms9122626. [PMID: 34946228 PMCID: PMC8704379 DOI: 10.3390/microorganisms9122626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 12/12/2021] [Accepted: 12/14/2021] [Indexed: 11/28/2022] Open
Abstract
Based on the strong aggregation of sympagic (ice-associated) algae and the high mortality or inactivity of bacteria attached to them, it was previously hypothesized that sympagic algae should be significant contributors to the export of carbon to Arctic sediments. In the present work, the lipid content of 30 sediment samples collected in the Canadian Arctic was investigated to test this hypothesis. The detection of high proportions of trans vaccenic fatty acid (resulting from cis-trans isomerase (CTI) activity of bacteria under hypersaline conditions) and 10S-hydroxyhexadec-8(trans)-enoic acid (resulting from 10S-DOX bacterial detoxification activity in the presence of deleterious free palmitoleic acid) confirmed: (i) the strong contribution of sympagic material to some Arctic sediments, and (ii) the impaired physiological status of its associated bacterial communities. Unlike terrestrial material, sympagic algae that had escaped zooplanktonic grazing appeared relatively preserved from biotic degradation in Arctic sediments. The expected reduction in sea ice cover resulting from global warming should cause a shift in the relative contributions of ice-associated vs. pelagic algae to the seafloor, and thus to a strong modification of the carbon cycle.
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Affiliation(s)
- Rémi Amiraux
- CNRS/INSU/IRD, Mediterranean Institute of Oceanography (MIO), UM 110, Aix-Marseille University, Université de Toulon, 13288 Marseille, France; (R.A.); (B.P.); (B.C.)
- UMR 6539 Laboratoire des Sciences de l’Environnement Marin, (CNRS, UBO, IRD, Ifremer) Institut, Universitaire Européen de la Mer (IUEM), 29280 Plouzané, France
- Takuvik Joint International Laboratory, Département de Biologie, Laval University (Canada)—CNRS, Université Laval, Québec, QC G1V 0A6, Canada
| | - Bonin Patricia
- CNRS/INSU/IRD, Mediterranean Institute of Oceanography (MIO), UM 110, Aix-Marseille University, Université de Toulon, 13288 Marseille, France; (R.A.); (B.P.); (B.C.)
| | - Burot Christopher
- CNRS/INSU/IRD, Mediterranean Institute of Oceanography (MIO), UM 110, Aix-Marseille University, Université de Toulon, 13288 Marseille, France; (R.A.); (B.P.); (B.C.)
| | - Rontani Jean-François
- CNRS/INSU/IRD, Mediterranean Institute of Oceanography (MIO), UM 110, Aix-Marseille University, Université de Toulon, 13288 Marseille, France; (R.A.); (B.P.); (B.C.)
- Correspondence:
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Duarte LN, Coelho FJRC, Oliveira V, Cleary DFR, Martins P, Gomes NCM. Characterization of bacterioplankton communities from a hatchery recirculating aquaculture system (RAS) for juvenile sole (Solea senegalensis) production. PLoS One 2019; 14:e0211209. [PMID: 30682196 PMCID: PMC6347143 DOI: 10.1371/journal.pone.0211209] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 01/09/2019] [Indexed: 12/18/2022] Open
Abstract
There is a growing consensus that future technological developments of aquaculture systems should account for the structure and function of microbial communities in the whole system and not only in fish guts. In this study, we aimed to investigate the composition of bacterioplankton communities of a hatchery recirculating aquaculture system (RAS) used for the production of Senegalese sole (Solea senegalensis) juveniles. To this end, we used a 16S rRNA gene based denaturing gradient gel electrophoresis (DGGE) and pyrosequencing analyses to characterize the bacterioplankton communities of the RAS and its water supply. Overall, the most abundant orders were Alteromonadales, Rhodobacterales, Oceanospirillales, Vibrionales, Flavobacteriales, Lactobacillales, Thiotrichales, Burkholderiales and Bdellovibrionales. Although we found a clear distinction between the RAS and the water supply bacterioplankton communities, most of the abundant OTUs (≥50 sequences) in the hatchery RAS were also present in the water supply. These included OTUs related to Pseudoalteromonas genus and the Roseobacter clade, which are known to comprise bacterial members with activity against Vibrio fish pathogens. Overall, in contrast to previous findings for sole grow-out RAS, our results suggest that the water supply may influence the bacterioplankton community structure of sole hatchery RAS. Further studies are needed to investigate the effect of aquaculture practices on RAS bacterioplankton communities and identification of the key drivers of their structure and diversity.
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Affiliation(s)
- Letícia N. Duarte
- Department of Biology & CESAM, University of Aveiro, Aveiro, Portugal
| | | | - Vanessa Oliveira
- Department of Biology & CESAM, University of Aveiro, Aveiro, Portugal
| | | | - Patrícia Martins
- Department of Biology & CESAM, University of Aveiro, Aveiro, Portugal
| | - Newton C. M. Gomes
- Department of Biology & CESAM, University of Aveiro, Aveiro, Portugal
- * E-mail:
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Breider S, Freese HM, Spröer C, Simon M, Overmann J, Brinkhoff T. Phaeobacter porticola sp. nov., an antibiotic-producing bacterium isolated from a sea harbour. Int J Syst Evol Microbiol 2017; 67:2153-2159. [PMID: 28699865 DOI: 10.1099/ijsem.0.001879] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Three heterotrophic, aerobic, brown-pigmented strains, designated P97T, P100 and P104, were isolated from a harbour in the southern North Sea. Phylogenetic analysis of 16S rRNA gene sequences revealed that the isolates are affiliated to the genus Phaeobacter. In silico DNA-DNA hybridization of the genome of strain P97T against those of existing type species indicated that P97T represents a novel species within the genus Phaeobacter, with Phaeobacter inhibens T5T as the closest described organism (29.6 % DNA-DNA relatedness) followed by P. gallaeciensis CIP 105210T (26.4 %). DNA-DNA hybridization demonstrated that the three new strains belong to the same species. The new isolates inhibited Pseudoalteromonas tunicata DSM 14096T, and were Gram-stain-negative, catalase- and oxidase-positive, chemo-organoheterotrophic and motile. Growth occurred at pH 6.5-9.5 (optimum 7.0-8.0) and at 4-30 °C (optimum 20-28 °C). The strains required NaCl for growth. The salinity range was 0.5-6.0 % (w/v) NaCl for P97T and P100, and 0.5-5.0 % for P104, lower than values described for Phaeobacter gallaeciensis and Phaeobacter inhibens. The optimum NaCl concentration for strains P97T and P104 was 2.0-4.0 %, and for P100 was 2.0-3.0 %. Fatty acids (>1 %) comprised 18 : 1ω7c, 16 : 0, 18 : 1 ω7c 11-methyl, 18 : 0, 12 :1, 18 : 2ω7c,12, 10 : 0 3-OH and 12 : 0 3-OH. Polar lipids were phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol, an aminolipid, one unknown lipid and one additional unknown lipid in strain P97T. The major respiratory quinone was Q10. Based on phylogenetic and phenotypic differences, the strains represent a novel species in the genus Phaeobacter, for which the name Phaeobacter porticola sp. nov. is proposed. The type strain is P97T (=DSM 103148T=LMG 29594T).
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Affiliation(s)
- Sven Breider
- Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg, Germany
| | - Heike M Freese
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstr. 7B, 38124 Braunschweig, Germany
| | - Cathrin Spröer
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstr. 7B, 38124 Braunschweig, Germany
| | - Meinhard Simon
- Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg, Germany
| | - Jörg Overmann
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstr. 7B, 38124 Braunschweig, Germany
| | - Thorsten Brinkhoff
- Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg, Germany
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