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Kristyanto S, Kim KR, Jung J, Kim HM, Kim K, Jeon CO. Tenacibaculum aquimarinum sp. nov., isolated from a marine alga and seawater. Int J Syst Evol Microbiol 2022; 72. [DOI: 10.1099/ijsem.0.005477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Two Gram-stain-negative, aerobic and yellow-pigmented bacterial strains, designated K20-16T and MSW2, were isolated from a marine red alga (Chondrus species) and seawater, respectively. Both strains were oxidase-positive, weakly catalase-positive and non-flagellated rods with gliding motility. Menaquinone-6 was detected as the sole isoprenoid quinone in both strains. Iso-C15:0, iso-C15:0 3-OH, iso-C15:1 G, C15:1
ω6c and summed feature 3 (comprising C16:1
ω7c and/or C16:1
ω6c) were identified in both strains as major fatty acids. Phosphatidylethanolamine was not identified in strain K20-16T, but it was identified in strain MSW2. The genomic DNA G+C contents of strains K20-16T and MSW2 were 30.5 and 30.7 %, respectively. Strains K20-16T and MSW2 shared 99.7% 16S rRNA gene sequence similarity, 97.7% average nucleotide identity (ANI), and 80.5% digital DNA–DNA hybridization (DDH) value, indicating that they are the same species. Phylogenetic analyses based on 16S rRNA gene and 92 concatenated core protein sequences revealed that strains K20-16T and MSW2 formed a phylogenic lineage within the genus
Tenacibaculum
and were most closely related to
Tenacibaculum todarodis
LPB0136T with 98.3 and 98.0% 16S rRNA gene sequence similarities, respectively. ANI and digital DDH values between strains K20-16T and MSW2 and other type strains were less than 91.4 and 43.1 %, respectively. Based on the phenotypic, chemotaxonomic and molecular features, strains K20-16T and MSW2 represent a novel species of the genus
Tenacibaculum
, for which the name Tenacibaculum aquimarinum sp. nov. is proposed. The type strain is K20-16T (=KACC 22 342T=JCM 35 023T).
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Affiliation(s)
- Sylvia Kristyanto
- Department of Life Science, College of Natural Science, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Kyeong Ryeol Kim
- Department of Life Science, College of Natural Science, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Jaejoon Jung
- Department of Life Science, College of Natural Science, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Hyung Min Kim
- Department of Life Science, College of Natural Science, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Keunpil Kim
- Department of Life Science, College of Natural Science, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Che Ok Jeon
- Department of Life Science, College of Natural Science, Chung-Ang University, Seoul 06974, Republic of Korea
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A deep dive into the epibiotic communities on aquacultured sugar kelp Saccharina latissima in Southern New England. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Ahmed A, Khurshid A, Tang X, Wang J, Khan TU, Mao Y. Structural and Functional Impacts of Microbiota on Pyropia yezoensis and Surrounding Seawater in Cultivation Farms along Coastal Areas of the Yellow Sea. Microorganisms 2021; 9:microorganisms9061291. [PMID: 34204837 PMCID: PMC8231614 DOI: 10.3390/microorganisms9061291] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 06/04/2021] [Accepted: 06/08/2021] [Indexed: 12/24/2022] Open
Abstract
Pyropia yezoensis is the most important commercial edible red algae in China, carrying a variety of resident microbes at its surface. To understand microbiome diversity, community structure, interactions and functions with hosts in this regard, thalli and seawater sampleswere collected from Yantai and Rizhao cultivation farms in the Yellow Sea. The thalli and seawater samples (n = 12) were collected and studied using an Illumina NovaSeq 6000 platform and 16S ribosomal RNA (rRNA) gene sequencing, along with the consideration of environmental factors. Bacterial communities in association with P. yezoensis and surrounding seawater were predominated by Cyanobacteria, Proteobacteria, and Bacteroidetes. The variability of bacterial communities related to P. yezoensis and seawater were predominantly shaped by nitrate (NO3), ammonium (NH4), and temperature. Cluster analysis revealed a close relationship between thalli (RTH and YTH) and seawater (RSW and YSW) in terms of the residing bacterial communities, respectively. PICRUSt analysis revealed the presence of genes associated with amino acid transportation and metabolism, which explained the bacterial dependence on algal-provided nutrients. This study reveals that the diversity of microbiota for P. yezoensis is greatly influenced by abiotic factors and algal organic exudates which trigger chemical signaling and transportation responses from the bacterial community, which in turn activates genes to metabolize subsequent substrates.
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Affiliation(s)
- Arsalan Ahmed
- Key Laboratory of Marine Genetics and Breeding (Ministry of Education), College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China; (A.A.); (A.K.); (X.T.); (J.W.); (T.U.K.)
| | - Anam Khurshid
- Key Laboratory of Marine Genetics and Breeding (Ministry of Education), College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China; (A.A.); (A.K.); (X.T.); (J.W.); (T.U.K.)
| | - Xianghai Tang
- Key Laboratory of Marine Genetics and Breeding (Ministry of Education), College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China; (A.A.); (A.K.); (X.T.); (J.W.); (T.U.K.)
| | - Junhao Wang
- Key Laboratory of Marine Genetics and Breeding (Ministry of Education), College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China; (A.A.); (A.K.); (X.T.); (J.W.); (T.U.K.)
| | - Tehsin Ullah Khan
- Key Laboratory of Marine Genetics and Breeding (Ministry of Education), College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China; (A.A.); (A.K.); (X.T.); (J.W.); (T.U.K.)
| | - Yunxiang Mao
- Key Laboratory of Marine Genetics and Breeding (Ministry of Education), College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China; (A.A.); (A.K.); (X.T.); (J.W.); (T.U.K.)
- Key Laboratory of Utilization and Conservation of Tropical Marine Bioresource (Ministry of Education), College of Fisheries and Life Science, Hainan Tropical Ocean University, Sanya 572022, China
- Correspondence:
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Nowlan JP, Lumsden JS, Russell S. Advancements in Characterizing Tenacibaculum Infections in Canada. Pathogens 2020; 9:pathogens9121029. [PMID: 33302445 PMCID: PMC7763822 DOI: 10.3390/pathogens9121029] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/02/2020] [Accepted: 12/03/2020] [Indexed: 12/11/2022] Open
Abstract
Tenacibaculum is a genus of gram negative, marine, filamentous bacteria, associated with the presence of disease (tenacibaculosis) at aquaculture sites worldwide; however, infections induced by this genus are poorly characterized. Documents regarding the genus Tenacibaculum and close relatives were compiled for a literature review, concentrating on ecology, identification, and impacts of potentially pathogenic species, with a focus on Atlantic salmon in Canada. Tenacibaculum species likely have a cosmopolitan distribution, but local distributions around aquaculture sites are unknown. Eight species of Tenacibaculum are currently believed to be related to numerous mortality events of fishes and few mortality events in bivalves. The clinical signs in fishes often include epidermal ulcers, atypical behaviors, and mortality. Clinical signs in bivalves often include gross ulcers and discoloration of tissues. The observed disease may differ based on the host, isolate, transmission route, and local environmental conditions. Species-specific identification techniques are limited; high sequence similarities using conventional genes (16S rDNA) indicate that new genes should be investigated. Annotating full genomes, next-generation sequencing, multilocus sequence analysis/typing (MLSA/MLST), matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF), and fatty acid methylesters (FAME) profiles could be further explored for identification purposes. However, each aforementioned technique has disadvantages. Since tenacibaculosis has been observed world-wide in fishes and other eukaryotes, and the disease has substantial economic impacts, continued research is needed.
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Affiliation(s)
- Joseph P. Nowlan
- Department of Pathobiology, University of Guelph, Guelph, OT N1G 2W1, Canada;
- Center for Innovation in Fish Health, Vancouver Island University, Nanaimo, BC V9R 5S5, Canada;
- Correspondence:
| | - John S. Lumsden
- Department of Pathobiology, University of Guelph, Guelph, OT N1G 2W1, Canada;
| | - Spencer Russell
- Center for Innovation in Fish Health, Vancouver Island University, Nanaimo, BC V9R 5S5, Canada;
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Xu ZX, Yu P, Liang QY, Mu DS, Du ZJ. Inducible expression of agar-degrading genes in a marine bacterium Catenovulum maritimus Q1T and characterization of a β-agarase. Appl Microbiol Biotechnol 2020; 104:10541-10553. [DOI: 10.1007/s00253-020-10969-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/09/2020] [Accepted: 10/18/2020] [Indexed: 12/01/2022]
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Insights into the microbiome of farmed Asian sea bass (Lates calcarifer) with symptoms of tenacibaculosis and description of Tenacibaculum singaporense sp. nov. Antonie van Leeuwenhoek 2020; 113:737-752. [PMID: 32080799 DOI: 10.1007/s10482-020-01391-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 02/03/2020] [Indexed: 12/26/2022]
Abstract
Outbreaks of diseases in farmed fish remain a recurring problem despite the development of vaccines and improved hygiene standards on aquaculture farms. One commonly observed bacterial disease in tropical aquaculture of the South-East Asian region is tenacibaculosis, which is attributed to members of the genus Tenacibaculum (family Flavobacteriaceae, phylum Bacteroidetes), most notably Tenacibaculum maritimum. The impact of tenacibaculosis on the fish microbiota remains poorly understood. In this study, we analysed the microbiota of different tissues of commercially reared Asian seabass (Lates calcarifer) that showed symptoms of tenacibaculosis and compared the microbial communities to those of healthy and experimentally infected fish that were exposed to diseased farmed fish. The relative abundance of Tenacibaculum species in experimentally infected fish was significantly lower than in commercially reared diseased fish and revealed a higher prevalence of different Tenacibaculum species. One isolated strain, TLL-A2T, shares 98.7% 16S rRNA gene identity with Tenacibaculum mesophilum DSM 13764T. The genome of strain TLL-A2T was sequenced and compared to that of T. mesophilum DSM 13764T. Analysis of average nucleotide identity and comparative genome analysis revealed only 92% identity between T. mesophilum DSM 13764T and strain TLL-A2T and differences between the two strains in predicted carbohydrate activating enzymes respectively. Phenotypic comparison between strain TLL-A2T and T. mesophilum DSM 13764T indicated additional differences, such as growth response at different salt concentrations. Based on molecular and phenotypic differences, strain TLL-A2T (=DSM 106434T, KCTC 62393T) is proposed as the type strain of Tenacibaculum singaporense sp. nov.
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Bridel S, Olsen AB, Nilsen H, Bernardet JF, Achaz G, Avendaño-Herrera R, Duchaud E. Comparative Genomics of Tenacibaculum dicentrarchi and "Tenacibaculum finnmarkense" Highlights Intricate Evolution of Fish-Pathogenic Species. Genome Biol Evol 2018; 10:452-457. [PMID: 29360975 PMCID: PMC5793721 DOI: 10.1093/gbe/evy020] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/18/2018] [Indexed: 01/03/2023] Open
Abstract
The genus Tenacibaculum encompasses several species pathogenic for marine fish. Tenacibaculum dicentrarchi and "Tenacibaculum finnmarkense" (Quotation marks denote species that have not been validly named.) were retrieved from skin lesions of farmed fish such as European sea bass or Atlantic salmon. They cause a condition referred to as tenacibaculosis and severe outbreaks and important fish losses have been reported in Spanish, Norwegian, and Chilean marine farms. We report here the draft genomes of the T. dicentrarchi and "T. finnmarkense" type strains. These genomes were compared with draft genomes from field isolates retrieved from Chile and Norway and with previously published Tenacibaculum genomes. We used Average Nucleotide Identity and core genome-based phylogeny as a proxy index for species boundary delineation. This work highlights evolution of closely related fish-pathogenic species and suggests that homologous recombination likely contributes to genome evolution. It also corrects the species affiliation of strain AYD7486TD claimed by Grothusen et al. (2016).
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Affiliation(s)
- Sébastien Bridel
- VIM, INRA, Université Paris-Saclay, Jouy-en-Josas, France.,Labofarm, Finalab, Loudéac, France.,Université de Versailles Saint-Quentin-En-Yvelines, Montigny-Le-Bretonneux, France
| | | | | | | | - Guillaume Achaz
- Atelier de Bioinformatique, UMR 7205 ISyEB, MNHN-UPMC-CNRS-EPHE, Muséum National d'Histoire Naturelle, Paris, France
| | - Ruben Avendaño-Herrera
- Laboratorio de Patología de Organismos Acuáticos y Biotecnología Acuícola, Departamento de Ciencias Biológicas, Facultad de Ciencias Biológicas, Universidad Andrés Bello, Viña del Mar, Chile.,Interdisciplinary Center for Aquaculture Research (INCAR), Concepción, Chile
| | - Eric Duchaud
- VIM, INRA, Université Paris-Saclay, Jouy-en-Josas, France
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