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Journal articles on the topic 'Halophilic bacterium'

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Published: 6 September 2023

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1

Ameen, Ayesha, Hira Mubeen, and Shahid Raza. "Halobacterium sp. NRC-1: A Review." International Journal of Advances in Scientific Research 3, no. 3 (March 31, 2017): 30. http://dx.doi.org/10.7439/ijasr.v3i3.4048.

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Halobacteriumsp. NRC-1 is the halophilic bacterium. This halophile has a great potential to survive on high salinity conditions. The genome of this bacterium has sequenced. The studies have done at metagenomics level, which include the Identification and Molecular Characterization. Identification of this extreme halophile was done by 16S ribotyping and PCR amplification using universal primers FD1 and rP1. The sequences than compared with already sequenced genomes of halophiles. The post genomic tools and microarrays were applied for sequencing. Halobacteriumsp. NRC-1 transcriptional profiling showed that it is highly responsive to the environment and give specific responses at gene expression level. There is a need for extensive research at metaproteomic level. To study the expression and function of proteins, whole protein profiling of this specie need to be studied.
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2

Sorokin, D. Yu, T. P. Tourova, E. A. Galinski, C. Belloch, and B. J. Tindall. "Extremely halophilic denitrifying bacteria from hypersaline inland lakes, Halovibrio denitrificans sp. nov. and Halospina denitrificans gen. nov., sp. nov., and evidence that the genus name Halovibrio Fendrich 1989 with the type species Halovibrio variabilis should be associated with DSM 3050." International Journal of Systematic and Evolutionary Microbiology 56, no. 2 (February 1, 2006): 379–88. http://dx.doi.org/10.1099/ijs.0.63964-0.

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Anaerobic enrichments with acetate as electron donor and nitrate as electron acceptor at 4 M NaCl from inland, hypersaline lake sediments from Central Asia resulted in the isolation of several extremely halophilic bacteria that comprised two subgroups, most with vibrio-shaped cells and a single strain with rod-shaped cells. Members of both subgroups were extremely halophilic, with growth occurring in 2–5 M NaCl with an optimum at 2–3 M. 16S rRNA gene sequence analysis showed a close affiliation of the new isolates with Pseudomonas halophila DSM 3050 in the Gammaproteobacteria. However, phenotypic comparison of the denitrifying halophiles with the original description of P. halophila demonstrated that they were more similar to another bacterium isolated from the same source at the same time, the extremely halophilic Halovibrio variabilis, which has since been reclassified as Halomonas variabilis (DSM 3051). Direct cross-comparison showed that the characteristics of these two halophilic bacteria do not correspond with the original descriptions associated with these names and DSM numbers. While it is desirable that this problem be solved, in connection with the present investigations, this is a matter that can only be solved by a Request for an Opinion. On the basis of the phenotypic and genetic comparison of these isolates, it is proposed that the new denitrifying vibrio-shaped isolates represent a novel species, Halovibrio denitrificans sp. nov. (type strain HGD 3T=DSM 15503T=UNIQEM U232T) and that the rod-shaped isolate represents a novel genus and species, Halospina denitrificans gen. nov., sp. nov. (type strain HGD 1-3T=DSM 15505T=UNIQEM U233T).
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Goel, Usha, Tiiu Kauri, Donn J. Kushner, and Hans-W. Ackermann. "A moderately halophilic Vibrio from a Spanish saltern and its lytic bacteriophage." Canadian Journal of Microbiology 42, no. 10 (October 1, 1996): 1015–23. http://dx.doi.org/10.1139/m96-130.

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A number of bacteria and their phages were isolated from a saltern near Alicante, Spain. One isolate, Vibrio B1, a moderate halophile that is probably a strain of Vibrio costicola, was host to a lytic phage, UTAK. Studies of the host bacterium included the effects of salt concentrations on the action of a number of inhibitory agents. Phage UTAK has a head, a tail, and a baseplate. It contains 80 kbp of double-stranded DNA with no unusual bases. It was stable for long periods in the absence of high salt concentrations and even in distilled water. Salt concentrations had little effect on adsorption of UTAK to its host but resulted in considerable changes in burst size. It appears that phages of halophilic and salt-tolerant eubacteria, and also of some marine bacteria, have much lower salt requirements for stability than the phages of halophilic archaebacteria. Our results suggest that ionic controls of phage replication in these eubacteria may differ from those of growth.Key words: halophiles, Vibrio sp., bacteriophage, salt responses.
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Echigo, Akinobu, Hiroaki Minegishi, Yasuhiro Shimane, Masahiro Kamekura, and Ron Usami. "Natribacillus halophilus gen. nov., sp. nov., a moderately halophilic and alkalitolerant bacterium isolated from soil." International Journal of Systematic and Evolutionary Microbiology 62, no. 2 (February 1, 2012): 289–94. http://dx.doi.org/10.1099/ijs.0.028506-0.

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A moderately halophilic and alkalitolerant bacterium, designated strain HN30T, was isolated from garden soil in Japan. Cells of strain HN30T were motile, endospore-forming, aerobic, rod-shaped and Gram-positive, and contained A1γ meso-diaminopimelic acid-type murein. Growth occurred in 7–23 % (w/v) NaCl (optimum, 10–15 %, w/v), at pH 6.5–10.0 (optimum, pH 8.0–8.5) and at 20–40 °C (optimum, 30 °C). The isoprenoid quinone was menaquinone-7. The polar lipids were phosphatidylglycerol and diphosphatidylglycerol. The major cellular fatty acids were anteiso-C15 : 0, anteiso-C17 : 0, iso-C16 : 0 and C16 : 0. The DNA G+C content of strain HN30T was 47 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain HN30T was most closely related to Geomicrobium halophilum BH1T (93 % sequence similarity). 16S rRNA gene sequence similarities with other recognized species were less than 89 %. Phylogenetic and phenotypic characteristics indicated that strain HN30T represents a novel species in a new genus, for which the name Natribacillus halophilus gen. nov., sp. nov. is proposed; the type strain is HN30T ( = JCM 15649T = DSM 21771T).
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Liu, Wenyan, Linlin Jiang, Chunjing Guo, and Su Sheng Yang. "Terribacillus aidingensis sp. nov., a moderately halophilic bacterium." International Journal of Systematic and Evolutionary Microbiology 60, no. 12 (December 1, 2010): 2940–45. http://dx.doi.org/10.1099/ijs.0.017228-0.

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Three Gram-positive, moderately halophilic bacteria, designated YI7-61T, IA7 and DB2, were isolated from sediments of Aiding salt lake in the Xinjiang region of China. Cells of the strains were rod-shaped, motile by means of peritrichous flagella and produced ellipsoidal spores. Colonies were pale yellow in colour. The strains grew optimally at 30–37 °C, pH 6–7 and 3–7 % (w/v) NaCl. The diamino acid in the murein was meso-diaminopimelic acid and the major quinone system was MK-7. The major cellular fatty acids were anteiso-C15 : 0 and anteiso-C17 : 0. The DNA G+C content was 44.6–45.0 mol%. 16S rRNA gene sequence analysis revealed that strains YI7-61T, IA7 and DB2 were closely related to members of the genus Terribacillus and showed 96.8–97.6, 96.4–97.2 and 95.4–95.5 % 16S rRNA gene sequence similarity with Terribacillus halophilus 002-051T, Terribacillus saccharophilus RB589 and Terribacillus goriensis CL-GR16T, respectively. DNA–DNA relatedness among the isolates was 88–92 % and strain YI7-61T shared 24, 18 and 18 % DNA–DNA relatedness with T. halophilus JCM 21760T, T. saccharophilus JCM 21759T and T. goriensis DSM 18252T, respectively. On the basis of phenotypic and phylogenetic distinctiveness, the three isolates should be placed in the genus Terribacillus as representatives of a novel species, for which the name Terribacillus aidingensis sp. nov. is proposed. The type strain is YI7-61T (=CGMCC 1.8913T =NBRC 105790T).
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6

Kim, Minji, Ki-Eun Lee, In-Tae Cha, and Soo-Je Park. "Draconibacterium halophilum sp. nov., A Halophilic Bacterium Isolated from Marine Sediment." Current Microbiology 78, no. 6 (April 27, 2021): 2440–46. http://dx.doi.org/10.1007/s00284-021-02496-8.

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Oh, Young Joon, Joon Yong Kim, Hyo Kyeong Park, Ja-Young Jang, Seul Ki Lim, Min-Sung Kwon, and Hak-Jong Choi. "Salicibibacter halophilus sp. nov., a moderately halophilic bacterium isolated from kimchi." Journal of Microbiology 57, no. 11 (October 28, 2019): 997–1002. http://dx.doi.org/10.1007/s12275-019-9421-z.

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8

Caumette, Pierre, Renée Baulaigue, and Robert Matheron. "Thiocapsa halophila sp. nov., a new halophilic phototrophic purple sulfur bacterium." Archives of Microbiology 155, no. 2 (January 1991): 170–76. http://dx.doi.org/10.1007/bf00248613.

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9

Roeβler, Markus, and Volker Müller. "Chloride, a New Environmental Signal Molecule Involved in Gene Regulation in a Moderately Halophilic Bacterium, Halobacillus halophilus." Journal of Bacteriology 184, no. 22 (November 15, 2002): 6207–15. http://dx.doi.org/10.1128/jb.184.22.6207-6215.2002.

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ABSTRACT The gram-positive, aerobic, moderately halophilic bacterium Halobacillus halophilus is challenged in its environment by frequently changing salt (NaCl) concentrations. Recently, H. halophilus was shown to be the first prokaryote that is dependent on Cl− for growth. In a search for the biological function of Cl− in this prokaryote, we identified different Cl−-dependent processes, which suggests a more general role for Cl− in the metabolism of H. halophilus. To analyze the effect of Cl− in more detail, we concentrated on one model system, the Cl−-dependent production of flagella, and aimed to identify the molecular basis for the Cl− dependence of flagellum production. Here, we report that synthesis of the major subunit of the flagellum, FliC, is dependent on the Cl− concentration of the medium, as determined by Western blot analyses. The gene encoding FliC was cloned and sequenced, and Northern blot as well as reverse transcriptase PCR analyses revealed that expression of fliC is Cl− dependent. FliC is the first protein of known function demonstrated to be synthesized in a Cl−-dependent manner in a prokaryote. Two-dimensional gel electrophoresis of cells grown under different conditions revealed five more Cl−-induced proteins; these were identified by N-terminal sequencing and database searches to be orthologs of proteins involved in stress response in Bacillus subtilis. The data indicate that Cl− is an important environmental signal in this moderate halophile and regulates protein synthesis and gene expression. Furthermore, the data may suggest that Cl− plays a role in the signal transduction involved in salt perception by this bacterium.
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ISHIBASHI, Matsujiro, Sayaka YAMASHITA, and Masao TOKUNAGA. "Characterization of Halophilic Alkaline Phosphatase fromHalomonassp. 593, a Moderately Halophilic Bacterium." Bioscience, Biotechnology, and Biochemistry 69, no. 6 (January 2005): 1213–16. http://dx.doi.org/10.1271/bbb.69.1213.

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11

Zhong, Zhi-Ping, Ying Liu, Hong-Can Liu, Fang Wang, Yu-Guang Zhou, and Zhi-Pei Liu. "Marinobacter halophilus sp. nov., a halophilic bacterium isolated from a salt lake." International Journal of Systematic and Evolutionary Microbiology 65, Pt_9 (September 1, 2015): 2838–45. http://dx.doi.org/10.1099/ijs.0.000338.

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A Gram-staining-negative bacterium, strain XCD-X12T, was isolated from Xiaochaidan Lake, a salt lake (salinity 9.9 %, w/w) in Qaidam basin, Qinghai Province, China. Its taxonomic position was determined by using a polyphasic approach. Cells of strain XCD-X12T were non-spore-forming rods, 0.4–0.7 μm wide, 2.1–3.2 μm long and motile with a single polar flagellum. Strain XCD-X12T was strictly aerobic and catalase- and oxidase-positive. Growth was observed in the presence of 0–20.0 % (w/v) NaCl (optimum, 4.0–8.0 %), at 4–35 °C (optimum, 30 °C) and at pH 6.5–10.5 (optimum, pH 8.5). It contained Q-9 as the predominant respiratory quinone. The major fatty acids (>10.0 %) were C16 : 0, C16 : 1ω9c and C18 : 1ω9c. The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, two unknown phospholipids and an uncharacterized aminophospholipid. The DNA G+C content was 55.6 mol% (T m). Phylogenetic trees based on 16S rRNA gene sequences showed that strain XCD-X12T was associated with the genus Marinobacter, and showed the highest 16S rRNA gene sequence similarity to Marinobacter hydrocarbonoclasticus ATCC 49840T (97.4 %), M. vinifirmus FB1T (96.8 %), M. excellens KMM 3809T (96.8 %) and M. antarcticus ZS2-30T (96.7 %). DNA–DNA relatedness of strain XCD-X12T to M. hydrocarbonoclasticus CGMCC 1.7683T was 34 ± 5 %. Based on these data, it is concluded that strain XCD-X12T represents a novel species of the genus Marinobacter, for which the name Marinobacter halophilus sp. nov. is proposed. The type strain is XCD-X12T ( = CGMCC 1.12481T = JCM 30472T).
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Cao, Shu-Juan, Jian-Hang Qu, Hong-Li Yuan, and Bao-Zhen Li. "Salsuginibacillus halophilus sp. nov., a halophilic bacterium isolated from a soda lake." International Journal of Systematic and Evolutionary Microbiology 60, no. 6 (June 1, 2010): 1339–43. http://dx.doi.org/10.1099/ijs.0.010181-0.

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A Gram-stain-positive, rod-shaped, endospore-forming, halophilic, alkalitolerant bacterium, designated halo-1T, was isolated from sediment of Xiarinaoer soda lake, located in the Inner Mongolia Autonomous Region of China. Strain halo-1T grew in the presence of 9–30 % (w/v) NaCl (optimum 19 %) and at pH 5–10 (optimum pH 9). The cell-wall peptidoglycan contained meso-diaminopimelic acid and the major respiratory isoprenoid quinone was MK-7. The predominant cellular fatty acids of the isolate were anteiso-C15 : 0 (58.35 %), anteiso-C17 : 0 (12.89 %) and C16 : 0 (6.52 %). The polar lipids contained diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, glycolipid and a phospholipid of unknown structure. The DNA G+C content of the strain was 46.4 mol%. On the basis of 16S rRNA gene sequence similarity, strain halo-1T showed the highest similarity (93.9 %) to Salsuginibacillus kocurii CH9dT. Strain halo-1T could be clearly differentiated from its closest phylogenetic relative on the basis of several phenotypic, genotypic and chemotaxonomic features. Therefore, strain halo-1T represents a novel species, for which the name Salsuginibacillus halophilus sp. nov. is proposed, with the type strain halo-1T (=CGMCC 1.7653T =NBRC 104934T).
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13

Tang, S. K., Y. Wang, M. Cai, K. Lou, P. H. Mao, X. Jin, C. L. Jiang, L. H. Xu, and W. J. Li. "Microbulbifer halophilus sp. nov., a moderately halophilic bacterium from north-west China." INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY 58, no. 9 (September 1, 2008): 2036–40. http://dx.doi.org/10.1099/ijs.0.65519-0.

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Chen, Y. G., X. L. Cui, Y. Q. Zhang, W. J. Li, Y. X. Wang, L. H. Xu, Q. Peng, M. L. Wen, and C. L. Jiang. "Gracilibacillus halophilus sp. nov., a moderately halophilic bacterium isolated from saline soil." INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY 58, no. 10 (October 1, 2008): 2403–8. http://dx.doi.org/10.1099/ijs.0.65698-0.

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15

Lopalco, Patrizia, Roberto Angelini, Simona Lobasso, Wolker Müller, and Angela Corcelli. "Lipidomics of the moderately halophilic bacterium Halobacillus halophilus in relation to osmoadaptation." Chemistry and Physics of Lipids 164 (August 2011): S43. http://dx.doi.org/10.1016/j.chemphyslip.2011.05.130.

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Shieh, Wung Yang, and Chia Ming Liu. "Denitrification by a novel halophilic fermentative bacterium." Canadian Journal of Microbiology 42, no. 5 (May 1, 1996): 507–14. http://dx.doi.org/10.1139/m96-068.

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A novel halophilic heterotrophic bacterium, designated strain DN34, was isolated from seawater in Nanwan Bay of Renting National Park, Taiwan. It was Gram negative and facultatively anaerobic. Cells in late exponential to early stationary phase of growth were predominantly straight or curved rods, but Y- or V-shaped forms were also observed; straight and curved rods achieved motility by one to several lateral or subpolar flagella. The G+C content of the DNA was 51.7 mol%. Strain DN34 grew optimally at about 30 °C and pH 8.0. Growth depended on the presence of NaCl with optimal concentration at about 3%. Aerobically, strain DN34 grew much better and tolerated NaCl at a greater range of concentration with sufficient Mg2+and Ca2+than under deficient conditions; Mg2+or Ca2+was indispensable for growth under anaerobic conditions. The strain was capable of anaerobic growth by carrying out denitrifying metabolism using nitrate, nitrite, or nitrous oxide as terminal electron acceptors or, alternatively, by fermenting glucose or mannose as substrates. Halophilic heterotrophic bacteria capable of both denitrification and fermentation have not been reported previously.Key words: denitrification, denitrifying bacteria, halophilic bacteria, fermentative bacteria.
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17

Infante-Dominguez, Carmen, Paul A. Lawson, Crystal N. Johnson, Cristina Sánchez-Porro, and Antonio Ventosa. "Fodinicurvata halophila sp. nov., a moderately halophilic bacterium from a marine saltern." International Journal of Systematic and Evolutionary Microbiology 65, Pt_3 (March 1, 2015): 766–71. http://dx.doi.org/10.1099/ijs.0.000010.

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A Gram-stain-negative, rod-shaped, facultatively anaerobic, moderately halophilic bacterium, designated strain BA45ALT, was isolated from water of a saltern located in Santa Pola, Alicante, Spain. Cells were motile, and catalase- and oxidase-positive. Strain BA45ALT grew at temperatures in the range 14–45 °C (optimally at 37 °C), at pH 5.0–9.0 (optimally at pH 7.5), and in media containing 5–20 % (w/v) salts [optimally in media containing 10 % (w/v) salts]. Phylogenetic analysis based on the comparison of 16S rRNA gene sequences revealed that strain BA45ALT is a member of the genus Fodinicurvata . The closest relatives to the novel strain were Fodinicurvata fenggangensis YIM D812T and Fodinicurvata sediminis YIM D82T with sequence similarities of 98.2 % and 97.4 %, respectively. DNA–DNA hybridization between the novel isolate and these phylogenetically related species revealed relatedness values of 30 % and 15 %, respectively, with respect to the aforementioned species. The major cellular fatty acids of strain BA45ALT were C18 : 1ω7c, C16 : 0 and iso-C15 : 0. The G+C content of the genomic DNA of strain BA45ALT was 58.0 mol%, and the polar lipid pattern consisted of diphosphatidylglycerol, phosphatidylmethylethanolamine and a number of unknown phospholipids and lipids. Based on phenotypic, chemotaxonomic and phylogenetic data presented in this study, strain BA45ALT constituted a novel species of the genus Fodinicurvata , for which the name Fodinicurvata halophila sp. nov. is suggested. The type strain is BA45ALT ( = CCM 8504T = CECT 8472T = JCM 19075T = LMG 27945T).
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Kucera, Dan, Iva Pernicová, Adriana Kovalcik, Martin Koller, Lucie Mullerova, Petr Sedlacek, Filip Mravec, et al. "Characterization of the promising poly(3-hydroxybutyrate) producing halophilic bacterium Halomonas halophila." Bioresource Technology 256 (May 2018): 552–56. http://dx.doi.org/10.1016/j.biortech.2018.02.062.

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Hao, Ruixia, and Anhuai Lu. "Biodegradation of heavy oils by halophilic bacterium." Progress in Natural Science 19, no. 8 (August 2009): 997–1001. http://dx.doi.org/10.1016/j.pnsc.2008.11.010.

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Kauri, Tiiu, Hans-W. Ackermann, Usha Goel, and Donn J. Kushner. "A bacteriophage of a moderately halophilic bacterium." Archives of Microbiology 156, no. 6 (November 1991): 435–38. http://dx.doi.org/10.1007/bf00245388.

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21

Aljohny, Bassam. "Halophilic Bacterium - A Review of New Studies." Biosciences, Biotechnology Research Asia 12, no. 3 (December 22, 2015): 2061–69. http://dx.doi.org/10.13005/bbra/1874.

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Salvarrey, M. S., J. J. B. Cannata, and J. J. Cazzulo. "Phosphoenolpyruvate carboxykinase from the moderate halophile Vibrio costicola. Purification, physicochemical properties and the effect of univalent-cation salts." Biochemical Journal 260, no. 1 (May 15, 1989): 221–30. http://dx.doi.org/10.1042/bj2600221.

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Phosphoenolpyruvate carboxykinase (PEPCK) was purified to homogeneity from the moderately halophilic bacterium Vibrio costicola. The enzyme is monomeric, with an Mr of 62,000, as determined by the Svedberg equation, by using values of s0(20,w) 4.4 x 10(-13) s, D20,w 6.13 x 10(-7) cm2.s-1 and v 0.719 cm3.g-1. Compared with other, non-halophilic, PEPCKs, the enzyme from V. costicola had a significantly lower total content of hydrophobic amino acids. The contents of glycine and serine were higher in the V. costicola enzyme (16.7 and 10.22% respectively) than in the non-halophilic PEPCKs (6.8-9.6% and 4.67-6.28% respectively). These results resemble those obtained by De Médicis & Rossignol [(1979) Experientia 35, 1546-1547] with the pyruvate kinase from V. costicola, and agree with the proposal by Lanyi [(1974) Bacteriol. Rev. 38, 272-290] of partial replacement of hydrophobic amino acids by glycine and serine to maintain the balance between hydrophobic and hydrophilic forces in halophilic enzymes. In agreement with this ‘halophilic’ characteristic, the PEPCK was somewhat stabilized by 1 M-KCl or -NaCl and by 20% (v/v) glycerol, and its oxaloacetate-decarboxylation and 14CO2-oxaloacetate-exchange reactions were activated by KCl and NaCl up to 1 M, whereas the fixation of CO2 on PEP had a maximum at 0.025-0.05 M salt. These facts suggest that the salts, at concentrations probably physiological for the bacterium, increase the formation of the complex of oxaloacetate and ATP with the enzyme, and the liberation of the products, PEP and ADP, thus favouring PEP synthesis.
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Poosarla Venkata, Giridhar, and T. S. Chandra. "Xylanase production by halophilic bacterium Gracilibacillus sp. TSCPVG under solid state fermentation." Research Journal of Biotechnology 16, no. 7 (June 25, 2021): 92–100. http://dx.doi.org/10.25303/167rjbt9221.

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We previously demonstrated the production and purification of novel halo-acid-alkali-thermo-stable xylanase from halophilic bacterium Gracilibacillus sp. TSCPVG using submerged fermentation (SmF). In this work, we further showed the production of halophilic xylanase by solid state fermentation (SSF) from halophilic bacterium Gracilibacillus sp. TSCPVG using cheap solid-substrate wheat bran. High levels of enzyme titers (657 U/g dw) were obtained after varying certain SSF parameters such as incubation period, particle size, moisture ratio, salinity, pH, temperature and by supplementing different carbon and nitrogen sources externally to the fermentation medium. This bacterium could be a novel strain due to its ability to produce high titers of xylanase with extremophilic characters even under the conditions of SSF. Thus, this beneficiary role may lead to a substantial reduction in the overall cost of enzyme production and may have a huge impact on the economics of hemicellulose degradation under high saline conditions.
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Shieh, Wung Yang, and Wen Dar Jean. "Alterococcus agarolyticus, gen.nov., sp.nov., a halophilic thermophilic bacterium capable of agar degradation." Canadian Journal of Microbiology 44, no. 7 (July 1, 1998): 637–45. http://dx.doi.org/10.1139/w98-051.

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Five strains of facultatively anaerobic moderately thermophilic bacteria were isolated from two hot springs in the intertidal zone of Lutao, Taiwan. They produced extracellular agarase on agar medium, yielding reducing sugars and organic acids as the end products under either aerobic or anaerobic conditions. The growth temperature range was approximately 38–58°C with an optimal temperature of about 48°C. The five strains tolerated a relatively narrow pH range from 7.0 to 8.5. They were Gram-negative halophiles growing optimally at 2.0–2.5% NaCl (ca. 0.34–0.43 M). They were capable of anaerobic growth by fermenting glucose and producing various organic acids such as butyrate, propionate, formate, lactate, and acetate. Cells grown in liquid medium were motile monotrichous cocci, normally 0.8–0.9 µm in diameter. They possessed saturated anteiso-15-carbon acid (anteiso-C15:0) as the most abundant cellular fatty acid (46.0–51.3 mo1%) and had G+C contents ranging from 65.5 to 67.0 mo1%. They are the first thermophiles found to degrade agar and also the first halophilic thermophilic bacteria known to be capable of both aerobic and anaerobic fermentative growth. These bacteria are considered to represent a new genus that we named Alterococcus, and Alterococcus agarolyticus is the type species. Key words: Alterococcus agarolyticus, thermophilic bacteria, halophilic bacteria, agar-degrading bacteria, fermentative bacteria.
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Zhao, Zhe, and Lan Ying Zhang. "Screening and Identification of a PCBs-Degrading Halophilic Bacterium." Advanced Materials Research 113-116 (June 2010): 2177–80. http://dx.doi.org/10.4028/www.scientific.net/amr.113-116.2177.

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Polychlorinated biphenyls (PCBs) are Persistent Organic Pollutants (POPs). This experiment screened a halophilic bacterium from the deep sea sediments, which could grow at the salinity of 15%, and designated as B2.6. The cells of this strain were rod shaped, Gram negative, motile. Growth of this bacterium in the presence of PCBs, as the sole source of carbon and energy, and the experiment indicated that at 30°C when pH value is between 7 and 8, inoculation amount is 5mL, the concentration of PCBs is below 3mg•L-1, and the ratio of degradation could reach 90% at 72h. The traditional morphology, physiological and biochemical properties as well as identified system of Biolog were applied to the bacterial classification. The pattern of PCBs-degrading enzyme production of strain B2.6 was continuous synthesis.
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Chen, Y. G., Y. Q. Zhang, H. D. Xiao, Z. X. Liu, L. B. Yi, J. X. Shi, X. Y. Zhi, X. L. Cui, and W. J. Li. "Pontibacillus halophilus sp. nov., a moderately halophilic bacterium isolated from a sea urchin." INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY 59, no. 7 (June 19, 2009): 1635–39. http://dx.doi.org/10.1099/ijs.0.002469-0.

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Amoozegar, M. A., C. Sanchez-Porro, R. Rohban, M. Hajighasemi, and A. Ventosa. "Piscibacillus halophilus sp. nov., a moderately halophilic bacterium from a hypersaline Iranian lake." INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY 59, no. 12 (July 30, 2009): 3095–99. http://dx.doi.org/10.1099/ijs.0.012013-0.

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Amoozegar, Mohammad Ali, Maryam Bagheri, Ali Makhdoumi, Mahdi Moshtaghi Nikou, Seyed Abolhassan Shahzadeh Fazeli, Peter Schumann, Cathrin Spröer, Cristina Sánchez-Porro, and Antonio Ventosa. "Oceanobacillus halophilus sp. nov., a novel moderately halophilic bacterium from a hypersaline lake." International Journal of Systematic and Evolutionary Microbiology 66, no. 3 (March 1, 2016): 1317–22. http://dx.doi.org/10.1099/ijsem.0.000952.

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Köcher, Saskia, Jürgen Breitenbach, Volker Müller, and Gerhard Sandmann. "Structure, function and biosynthesis of carotenoids in the moderately halophilic bacterium Halobacillus halophilus." Archives of Microbiology 191, no. 2 (September 27, 2008): 95–104. http://dx.doi.org/10.1007/s00203-008-0431-1.

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Infante-Domínguez, Carmen, Cristina Sánchez-Porro, and Antonio Ventosa. "Aquisalimonas lutea sp. nov., a moderately halophilic bacterium from a saltern." International Journal of Systematic and Evolutionary Microbiology 65, Pt_4 (April 1, 2015): 1354–59. http://dx.doi.org/10.1099/ijs.0.000106.

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A yellow-pigmented, motile, Gram-stain-negative, moderately halophilic and strictly aerobic bacterium, designated BA42AL-1T, was isolated from water of a saltern of Santa Pola, Alicante, Spain. Strain BA42AL-1T grew in media containing 5–20 % (w/v) salts (optimum 7.5 % salts). It grew between pH 6.0 and 9.0 (optimally at pH 7.5) and at 15–45 °C (optimally at 37 °C). Phylogenetic analysis based on the comparison of 16S rRNA gene sequences revealed that strain BA42AL-1T is a member of the genus Aquisalimonas . The closest relatives to this strain were Aquisalimonas halophila YIM 95345T and Aquisalimonas asiatica CG12T with sequence similarities of 99.4 % and 97.0 %, respectively. DNA–DNA hybridization between the novel isolate and Aquisalimonas halophila YIM 95345T revealed a relatedness of 54 %. The major fatty acids of strain BA42AL-1T were C18 : 1ω6c/C18 : 1ω7c, C19 : 0 cyclo ω8c and C16 : 0, and lower contents of C12 : 0 and C18 : 0. The polar lipid pattern of strain BA42AL-1T consisted of diphosphatidylglycerol, phosphatidylglycerol, phosphatidylmethylethanolamine, phosphatidylcholine, two glycolipids, a lipid and four unknown phospholipids. The G+C content of the genomic DNA of this strain was 65.0 mol%. Based on the DNA–DNA hybridization, phenotypic, chemotaxonomic and phylogenetic data presented in this study, strain BA42AL-1T is proposed as a novel species of the genus Aquisalimonas , for which the name Aquisalimonas lutea sp. nov. is suggested. The type strain is BA42AL-1T ( = CCM 8472T = CECT 8326T = LMG 27614T).
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Poli, Annarita, Barbara Nicolaus, Aziz Akın Denizci, Bahar Yavuzturk, and Dilek Kazan. "Halomonas smyrnensis sp. nov., a moderately halophilic, exopolysaccharide-producing bacterium." International Journal of Systematic and Evolutionary Microbiology 63, Pt_1 (January 1, 2013): 10–18. http://dx.doi.org/10.1099/ijs.0.037036-0.

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Four Gram-negative, moderately halophilic, exopolysaccharide-producing strains, designated AAD6T, AAD4, AAD17 and AAD21, were isolated from Çamaltı Saltern Area, a wildlife reserve in Sasalı, İzmir province located in the Aegean Region of Turkey. The isolates grew at an optimum NaCl concentration of 10 % (w/v). The major cellular fatty acids were C16 : 0, C18 : 1ω7c, C16 : 1ω7c and C12 : 0 3OH, respectively and the predominant lipoquinone was ubiquinone Q-9. The G+C content of the genomic DNA of strains AAD6T, AAD4, AAD17 and AAD21 was 63.0, 63.3, 62.8 and 62.6 mol%, respectively. Comparative 16S rRNA gene sequence studies showed that the isolates belonged to the genus Halomonas . The DNA–DNA hybridization mean values between the representative strain AAD6T and the closely related species Halomonas salina DSM 5928T, Halomonas halophila DSM 4770T, Halomonas maura DSM 13445T, Halomonas organivorans DSM 16226T, Halomonas elongata DSM 2581T, Halomonas koreensis JCM 12237T and Halomonas nitroreducens LMG 24185, were 40.8, 39.6, 24.2, 23.3, 12.6, 14.5 and 12.2 %, respectively. Based on these data the strains represent a novel species of the genus Halomonas for which the name Halomonas smyrnensis sp. nov. is proposed. The type strain is AAD6T ( = DSM 21644T = JCM 15723T).
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Zhang, Yun-Jiao, Man Jia, Yong-Chun Ma, Kai-Yang Lu, Fei Tian, Hans-Peter Klenk, Yu Zhou, and Shu-Kun Tang. "Aquisalimonas halophila sp. nov., a moderately halophilic bacterium isolated from a hypersaline mine." International Journal of Systematic and Evolutionary Microbiology 64, Pt_7 (July 1, 2014): 2210–16. http://dx.doi.org/10.1099/ijs.0.059428-0.

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A Gram-negative, moderately halophilic, strictly aerobic strain, designated YIM 95345T, was isolated from a soil sample of a hypersaline mine in Yunnan province, PR China, and subjected to a polyphasic taxonomic study. Strain YIM 95345T grew at 15–45 °C (optimum 30–35 °C), 3.0–23.0 % (w/v) NaCl (optimum 10.0–11.0 %, w/v) and pH 6.0–9.0 (optimum pH 7.0–8.0). Phylogenetic analyses based on 16S rRNA gene sequences revealed that the organism belongs to the genus Aquisalimonas and exhibited sequence similarity of 96.6 % to the sole type strain Aquisalimonas asiatica CG12T. The predominant isoprenoid quinone was Q-8 and the major fatty acids were C16 : 0, C19 : 0 cyclo ω8c and C18 : 1ω7c. The polar lipids consisted of diphosphatidylglycerol, phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylinositol, three aminolipids and three unidentified phospholipids. The G+C content of the genomic DNA was 59.4 mol%. Based on the results of our comparative phylogenetic, chemotaxonomic and physiological analyses, the new isolate is assigned to a novel species of the genus Aquisalimonas , for which the name Aquisalimonas halophila sp. nov. is proposed, with the type strain YIM 95345T ( = DSM 25902T = CCTCC AB 2012043T).
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Zarparvar, Parisa, Mohammad Ali Amoozegar, Mahdi Moshtaghi Nikou, Peter Schumann, and Antonio Ventosa. "Salinithrix halophila gen. nov., sp. nov., a halophilic bacterium in the family Thermoactinomycetaceae." International Journal of Systematic and Evolutionary Microbiology 64, Pt_12 (December 1, 2014): 4115–19. http://dx.doi.org/10.1099/ijs.0.064766-0.

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A halophilic actinomycete, strain R4S8T, was isolated from soil of Inche-Broun hypersaline wetland in the north of Iran. The isolate grew aerobically at temperatures of 30–50 °C (optimum 40 °C), pH 6–10 (optimum pH 7.0) and in the presence of 1–15 % (w/v) NaCl (optimum 3–5 %). It formed short and straight to moderately flexuous aerial mycelium without motile elements. The cell wall of strain R4S8T contained meso-diaminopimelic acid as the diamino acid without any diagnostic sugars. The polar lipid pattern consisted of phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylserine, phosphatidylmonomethylethanolamine two unknown phospholipids and one unknown aminophospholipid. It synthesized anteiso-C15 : 0 (44.8 %), iso-C15 : 0 (28.8 %) and iso-C14 : 0 (8.5 %) as major fatty acids. MK-6 was the predominant respiratory quinone. The G+C content of the genomic DNA was 52.6 mol%. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain R4S8T belongs to the family Thermoactinomycetaceae and showed the closest 16S rRNA gene sequence similarity with Desmospora activa IMMIB L-1269T (95.5 %) and Marininema mesophilum SCSIO 10219T (95.3 %). On the basis of phylogenetic analysis and phenotypic characteristics, strain R4S8T represents a novel species in a new genus within the family Thermoactinomycetaceae , for which the name Salinithrix halophila gen. nov., sp. nov. is proposed. The type strain of the type species is R4S8T ( = IBRC-M 10813T = CECT 8506T).
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Robert, Hervé, Claire Le Marrec, Carlos Blanco, and Mohamed Jebbar. "Glycine Betaine, Carnitine, and Choline Enhance Salinity Tolerance and Prevent the Accumulation of Sodium to a Level Inhibiting Growth of Tetragenococcus halophila." Applied and Environmental Microbiology 66, no. 2 (February 1, 2000): 509–17. http://dx.doi.org/10.1128/aem.66.2.509-517.2000.

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ABSTRACT Natural-abundance 13C-nuclear magnetic resonance was used to probe the intracellular organic solute content of the moderately halophilic bacterium Tetragenococcus halophila. When grown in complex growth media supplemented or not with NaCl,T. halophila accumulates glycine betaine and carnitine. Unlike other moderate halophiles, T. halophila was not able to produce potent osmoprotectants (such as ectoines and glycine betaine) through de novo synthesis when cultured in defined medium under hyperosmotic constraint. Addition of 2 mM carnitine, glycine betaine, or choline to defined medium improved growth parameters, not only at high salinity (up to 2.5 M NaCl) but also in media lacking NaCl. These compounds were taken up when available in the surrounding medium. The transport activity occurred at low and high salinities and seems to be constitutive. Glycine betaine and carnitine were accumulated by T. halophila in an unmodified form, while exogenously provided choline led to an intracellular accumulation of glycine betaine. This is the first evidence of the existence of a choline-glycine betaine pathway in a lactic acid bacterium. An assay showed that the compatible solutes strikingly repressed the accumulation of glutamate and slightly increased the intracellular potassium level only at high salinity. Interestingly, osmoprotectant-treated cells were able to maintain the intracellular sodium concentration at a relatively constant level (200 to 300 nmol/mg [dry weight]), independent of the NaCl concentration of the medium. In contrast, in the absence of osmoprotectant, the intracellular sodium content increased sharply from 200 to 2,060 nmol/mg (dry weight) when the salinity of the medium was raised from 1 to 2 M. Indeed, the imported compatible solutes play an actual role in regulating the intracellular Na+ content and confer a much higher salt tolerance to T. halophila.
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Dueramae, Sawitree, Safiah Saah, Sirinan Shompoosang, and Patthinan Varichanan. "Enhancement of Halophilic Glutaminase Producing by Tetragenococcus muriaticus FF5302 in Bioreactor." Trends in Sciences 20, no. 4 (January 25, 2023): 6504. http://dx.doi.org/10.48048/tis.2023.6504.

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From Thai fermented fish sauce (Nam-pla), 59 bacterial isolates of halophilic glutaminase-producing bacteria were isolated. The hydrolysis of glutamine served as the primary screening procedure. It was discovered that strain FF5302 was an influential producer of the extracellular halophilic glutaminase enzyme. The moderately halophilic bacterium Tetragenoccus muriaticus FF5302 was identified through sequence analysis of the 16S rRNA gene, phylogenetic tree analysis, and phenotypic identification before it was possible to determine the optimal nutritional and culture conditions for its halophilic glutaminase activity. The purpose of this research was to determine the optimal nutritional and cultural conditions for producing halophilic glutaminase activity in a stirred tank bioreactor with a volume capacity of 3 L. The production of halophilic glutaminase from strain FF5302 was investigated by optimizing various physicochemical parameters. Seven potential factors are generally considered in halophilic glutaminase production, namely NaCl concentration, initial pH, temperature, incubation time, nitrogen sources, carbon sources, and inoculum size. According to the findings, the amount of halophilic glutaminase in the inoculum had an effect on the growth and activity of the enzyme when it was present at a concentration of 5 % (v/v). It was also found that halophilic glutaminase showed the highest activity (87.4 U mL−1) of strain FF5302 in SGC liquid medium containing NaCl 20 % (w/v), pH 8.0, agitation at 200 rpm, and an aeration rate of 0.05 VVM at 37 °C for 120 h. The size of the inoculum influenced both the proliferation and activity of halophilic glutaminase in the inoculum. Consequently, T. muriaticus FF5302 possessed an exceptional capacity to synthesize halophilic glutaminase. Furthermore, the halophilic glutaminase enzyme from halophilic bacteria is a prospective option for usage in the food industry as an aroma and flavor enhancer. HIGHLIGHTS muriaticus FF5302 was exceptionally capable of producing halophilic glutaminase. In addition, the enzyme is a viable candidate for usage in the food industry as an aroma and flavor enhancer. Furthermore, this study could also be helpful and valuable in improving enzyme productivity at the bioreactor scale for various industrial applications. GRAPHICAL ABSTRACT
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36

Wu, Xiao-Yue, Kong-Lan Shi, Xue-Wei Xu, Min Wu, Aharon Oren, and Xu-Fen Zhu. "Alkaliphilus halophilus sp. nov., a strictly anaerobic and halophilic bacterium isolated from a saline lake, and emended description of the genus Alkaliphilus." International Journal of Systematic and Evolutionary Microbiology 60, no. 12 (December 1, 2010): 2898–902. http://dx.doi.org/10.1099/ijs.0.014084-0.

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A novel strictly anaerobic, halophilic and fermentative strain, designated E2RT, was isolated from sediments of Xiaokule salt lake in Xinjiang Province, China. Cells were straight to slightly curved, Gram-stain-positive rods that were motile by means of flagella and formed endospores. Strain E2RT was moderately halophilic and grew optimally in the presence of 7.5 % NaCl, at pH 8.0 and at 32 °C. Substrates used include yeast extract, Casamino acids, tryptone, fructose, sucrose, xylose, ribose, lactate and tartrate. Thiosulfate could be used as an accessory electron acceptor and stimulated growth. The main fermentation products from fructose were formate and acetate. The predominant fatty acids were iso-C15 : 0, iso-C15 : 1 F and iso-C13 : 0. 16S rRNA gene sequence analyses revealed that strain E2RT was related most closely to members of the genus Alkaliphilus (95.5–91.1 % similarity). The G+C content of strain E2RT was 28.5 mol%. Strain E2RT could be differentiated from its closest relatives based on its halophilic nature and its lower DNA G+C content. It could also be differentiated based on its substrate utilization pattern and relatively high levels of iso-C15 : 0. On the basis of these data, strain E2RT is considered to represent a novel species of the genus Alkaliphilus, for which the name Alkaliphilus halophilus sp. nov. is proposed. The type strain is E2RT (=CGMCC 1.5124T =JCM 16124T). An emended description of the genus Alkaliphilus is also provided.
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SUN, Xiaoling, Bailing WANG, Dongbo LIU, Shan CHEN, Fan LI, and Hongmei XIA. "Isolation and Characteristics of a Moderately Halophilic Bacterium." Chinese Journal of Appplied Environmental Biology 18, no. 3 (2012): 477. http://dx.doi.org/10.3724/sp.j.1145.2012.00477.

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López-Pérez, Mario, Rohit Ghai, Maria Leon, Ángel Rodríguez-Olmos, José Copa-Patiño, Juan Soliveri, Cristina Sanchez-Porro, Antonio Ventosa, and Francisco Rodriguez-Valera. "Genomes of “Spiribacter”, a streamlined, successful halophilic bacterium." BMC Genomics 14, no. 1 (2013): 787. http://dx.doi.org/10.1186/1471-2164-14-787.

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39

Xu, X. W., Y. H. Wu, C. S. Wang, J. Y. Yang, A. Oren, and M. Wu. "Marinobacter pelagius sp. nov., a moderately halophilic bacterium." INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY 58, no. 3 (March 1, 2008): 637–40. http://dx.doi.org/10.1099/ijs.0.65390-0.

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Oren, Aharon. "Salinibacter: an extremely halophilic bacterium with archaeal properties." FEMS Microbiology Letters 342, no. 1 (February 25, 2013): 1–9. http://dx.doi.org/10.1111/1574-6968.12094.

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Liu, Wenyan, and Su Sheng Yang. "Oceanobacillus aidingensis sp. nov., a moderately halophilic bacterium." Antonie van Leeuwenhoek 105, no. 5 (March 5, 2014): 801–8. http://dx.doi.org/10.1007/s10482-014-0128-1.

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42

Fazli, Rahmad Rizki, Latifah Hanum, Mieke Alvionita, and Said Ali Akbar. "VARIASI SUMBER KARBON TERHADAP PRODUKSI BIOSURFAKTAN OLEH BAKTERI HALOFILIK ISOLAT TAMBAK GARAM KAJHU ACEH BESAR." Lantanida Journal 10, no. 1 (July 30, 2022): 75. http://dx.doi.org/10.22373/lj.v10i1.14108.

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This research has isolated one type of halophilic bacterial strain from the salt pond of Kajhu Village with the code KJ-AB2. This bacterium grew optimally at 10% (w/v) NaCl so it was classified as moderate halophilic bacteria. Several types of halophilic bacteria are known to produce biosurfactants. Biosurfactants are surface active agents that are widely used in several pharmaceutical, food dan petroleum industries. The production of biosurfactants is strongly influenced by the type of carbon source used for bacterial growth. Olive oil, palm oil, sunflower oil, glucose dan glycerol are types of carbon sources used to see their effect in producing biosurfactants. This isolate growed well on the five carbon sources with an average OD600 2.001±0.293 at 72 hours of fermentation. Biosurfactant production was measured by oil spreading test (OST) every 24 hours until 120 hours of fermentation. The highest OST value was obtained when KJ-AB2 isolate was grown on biosurfactant production media using olive oil, sunflower oil dan palm oil with an average OST value of 5.6±0.6 cm, 4.7±0.6 cm, dan 4.6±0.7 cm, respectively.
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43

Hänelt, Inga, and Volker Müller. "Molecular Mechanisms of Adaptation of the Moderately Halophilic Bacterium Halobacillis halophilus to Its Environment." Life 3, no. 1 (February 27, 2013): 234–43. http://dx.doi.org/10.3390/life3010234.

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44

Tardy-Jacquenod, C., M. Magot, B. K. C. Patel, R. Matheron, and P. Caumette. "Desulfotomaculum halophilum sp. nov., a halophilic sulfate-reducing bacterium isolated from oil production facilities." International Journal of Systematic Bacteriology 48, no. 2 (April 1, 1998): 333–38. http://dx.doi.org/10.1099/00207713-48-2-333.

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Zhu, Fengling, Lingyun Qu, Xuguang Hong, and Xiuqin Sun. "Isolation and Characterization of a Phosphate-Solubilizing Halophilic BacteriumKushneriasp. YCWA18 from Daqiao Saltern on the Coast of Yellow Sea of China." Evidence-Based Complementary and Alternative Medicine 2011 (2011): 1–6. http://dx.doi.org/10.1155/2011/615032.

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Phosphate-solubilizing bacteria (PSB) function in soil phosphorus cycle, increasing the bioavailability of soil phosphorus for plants. Isolation and application of salt-tolerant or halophilic PSB will facilitate the development of saline-alkali soil-based agriculture. A moderately halophilic bacterium was isolated from the sediment of Daqiao saltern on the eastern coast of China, which also performs phosphate-solubilizing ability. The bacterium was assigned to genusKushneriaaccording to its 16S rRNA gene sequence, and accordingly named asKushneriasp. YCWA18. The fastest growth was observed when the culturing temperature was 28∘C and the concentration of NaCl was 6% (w/v). It was founds that the bacterium can survive at a concentration of NaCl up to 20%. At the optimum condition, the bacterium solubilized 283.16 μg/mL phosphorus in 11 days after being inoculated in 200 mL Ca3(PO4)2containing liquid medium, and 47.52 μg/mL phosphorus in 8 days after being inoculated in 200 mL lecithin-containing liquid medium. The growth of the bacterium was concomitant with a significant decrease of acidity of the medium.
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Fukuda, Daisuke, Maki Watanabe, Yuji Aso, Kenji Sonomoto, and Ayaaki Ishizaki. "Cloning and regulatory analysis of groESL operon from halophilic lactic acid bacterium Tetragenococcus halophila." Journal of the Faculty of Agriculture, Kyushu University 46, no. 2 (February 28, 2002): 353–65. http://dx.doi.org/10.5109/24449.

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Amoozegar, Mohammad Ali, Ali Makhdoumi-Kakhki, Mohadaseh Ramezani, Mahdi Moshtaghi Nikou, Seyed Abolhassan Shahzadeh Fazeli, Peter Schumann, and Antonio Ventosa. "Limimonas halophila gen. nov., sp. nov., an extremely halophilic bacterium in the family Rhodospirillaceae." International Journal of Systematic and Evolutionary Microbiology 63, Pt_4 (April 1, 2013): 1562–67. http://dx.doi.org/10.1099/ijs.0.041236-0.

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A novel, Gram-staining-negative, non-pigmented, rod-shaped, strictly aerobic, extremely halophilic bacterium, designated strain IA16T, was isolated from the mud of the hypersaline Lake Aran-Bidgol, in Iran. Cells of strain IA16T were not motile. Growth occurred with 2.5–5.2 M NaCl (optimum 3.4 M), at pH 6.0–8.0 (optimum pH 7.0) and at 30–50 °C (optimum 40 °C). Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain IA16T belonged in the family Rhodospirillaceae and that its closest relatives were Rhodovibrio sodomensis DSM 9895T (91.6 % sequence similarity), Rhodovibrio salinarum NCIMB 2243T (91.2 %), Pelagibius litoralis CL-UU02T (88.9 %) and Fodinicurvata sediminis YIM D82T (88.7 %). The novel strain’s major cellular fatty acids were C19 : 0 cyclo ω7c and C18 : 0 and its polar lipid profile comprised phosphatidylglycerol, diphosphatidylglycerol, four unidentified phospholipids, three unidentified aminolipids and two other unidentified lipids. The cells of strain IA16T contained the ubiquinone Q-10. The G+C content of the novel strain’s genomic DNA was 67.0 mol%. The physiological, biochemical and phylogenetic differences between strain IA16T and other previously described taxa indicate that the strain represents a novel species in a new genus within the family Rhodospirillaceae , for which the name Limimonas halophila gen. nov., sp. nov. is proposed. The type strain of Limimonas halophila is IA16T ( = IBRC-M 10018T = DSM 25584T).
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Chen, Yi-Guang, Huai-Dong Xiao, Shu-Kun Tang, Yu-Qin Zhang, Entomack Borrathybay, Xiao-Long Cui, Wen-Jun Li, and Yan-Qi Liu. "Alteromonas halophila sp. nov., a new moderately halophilic bacterium isolated from a sea anemone." Antonie van Leeuwenhoek 96, no. 3 (April 24, 2009): 259–66. http://dx.doi.org/10.1007/s10482-009-9341-8.

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Corcelli, Angela, Veronica M. T. Lattanzio, Giuseppe Mascolo, Francesco Babudri, Aharon Oren, and Morris Kates. "Novel Sulfonolipid in the Extremely Halophilic Bacterium Salinibacter ruber." Applied and Environmental Microbiology 70, no. 11 (November 2004): 6678–85. http://dx.doi.org/10.1128/aem.70.11.6678-6685.2004.

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ABSTRACT Salinibacter ruber is an extremely halophilic bacterium, phylogenetically affiliated with the Flavobacterium/Cytophaga branch of the domain Bacteria. Electrospray mass analyses (negative ion) of the total lipid extract of a pure culture of S. ruber shows a characteristic peak at m/z 660 as the most prominent peak in the high-mass range of the spectrum. A novel sulfonolipid, giving rise to the molecular ion [M-H]− of m/z 660, has been identified. The sulfonolipid isolated and purified by thin-layer chromatography was shown by chemical degradation, mass spectrometry, infrared spectroscopy, and nuclear magnetic resonance analysis to have the structure 2-carboxy-2-amino-3-O-(13′-methyltetradecanoyl)-4-hydroxy-18-methylnonadec-5-ene-1-sulfonic acid. This lipid represents about 10% of total cellular lipids, and it appears to be a structural variant of the sulfonolipids found as main components of the cell envelope of gliding bacteria of the genus Cytophaga and closely related genera (W. Godchaux and E. R. Leadbetter, J. Bacteriol. 153:1238-1246, 1983) and of diatoms (R. Anderson, M. Kates, and B. E. Volcani, Biochim. Biophys. Acta 528:89-106, 1978). Since this sulfonolipid has never been observed in any other extreme halophilic microorganism, we consider the peak at m/z 660 the lipid signature of Salinibacter. This study suggests that this novel sulfonolipid may be used as a chemotaxonomic marker for the detection of Salinibacter within the halophilic microbial community in saltern crystallizer ponds and other hypersaline environments.
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Sanghvi, Gaurav, Mehul Jivrajani, Nirav Patel, Heta Jivrajani, Govinal Badiger Bhaskara, and Shivani Patel. "Purification and Characterization of Haloalkaline, Organic Solvent Stable Xylanase from Newly Isolated Halophilic Bacterium-OKH." International Scholarly Research Notices 2014 (September 8, 2014): 1–10. http://dx.doi.org/10.1155/2014/198251.

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A novel, alkali-tolerant halophilic bacterium-OKH with an ability to produce extracellular halophilic, alkali-tolerant, organic solvent stable, and moderately thermostable xylanase was isolated from salt salterns of Mithapur region, Gujarat, India. Identification of the bacterium was done based upon biochemical tests and 16S rRNA sequence. Maximum xylanase production was achieved at pH 9.0 and 37°C temperature in the medium containing 15% NaCl and 1% (w/v) corn cobs. Sugarcane bagasse and wheat straw also induce xylanase production when used as carbon source. The enzyme was active over a range of 0–25% sodium chloride examined in culture broth. The optimum xylanase activity was observed at 5% sodium chloride. Xylanase was purified with 25.81%-fold purification and 17.1% yield. Kinetic properties such as Km and Vmax were 4.2 mg/mL and 0.31 μmol/min/mL, respectively. The enzyme was stable at pH 6.0 and 50°C with 60% activity after 8 hours of incubation. Enzyme activity was enhanced by Ca2+, Mn2+, and Mg2+ but strongly inhibited by heavy metals such as Hg2+, Fe3+, Ni2+, and Zn2+. Xylanase was found to be stable in organic solvents like glutaraldehyde and isopropanol. The purified enzyme hydrolysed lignocellulosic substrates. Xylanase, purified from the halophilic bacterium-OKH, has potential biotechnological applications.
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