Halomonas sambharensis sp. nov., a Moderately Halophilic Bacterium Isolated from the Saltern Crystallizer Ponds of the Sambhar Salt Lake in India

Kushwaha, Bijayendra; Jadhav, Indrani; Jadhav, Kapilesh

doi:10.1007/s00284-020-01892-w

Cited by 5 publications

(1 citation statement)

References 37 publications

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“…The related genes that we found in Halomonas profundus 13 are nar G, nar Y, nar I, nir S, nor B, nor C, and nos Z, as well as some regulatory proteins related to nitrogen metabolism, nar T, nar X, nar L, nir Q, and nir D. Species within this genus can generally grow at concentrations of 1–12% NaCl, and the most salt-tolerant of these species is Halomonas icarae D1-1 T [ 15 ], which can grow in 24% NaCl. The optimum NaCl concentration is generally 3–8%, with the highest optimum of 10% for Halomonas pellis L5 T [ 14 – 18 , 54 , 55 ]. Due to its halophily, this genus has good potential for application in nitrogen removal from wastewater.…”

Section: Discussionmentioning

confidence: 99%

Complete genome sequencing and comparison of two nitrogen-metabolizing bacteria isolated from Antarctic deep-sea sediment

et al. 2022

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Background Bacteria are an essential component of the earth`s biota and affect circulation of matters through their metabolic activity. They also play an important role in the carbon and nitrogen cycle in the deep-sea environment. In this paper, two strains from deep-sea sediments were investigated in order to understand nitrogen cycling involved in the deep-sea environment. Results In this paper, the basic genomic information of two strains was obtained by whole genome sequencing. The Cobetia amphilecti N-80 and Halomonas profundus 13 genome sizes are 4,160,095 bp with a GC content of 62.5% and 5,251,450 bp with a GC content of 54.84%. Through a comparison of functional analyses, we predicted the possible C and N metabolic pathways of the two strains and determined that Halomonas profundus 13 could use more carbon sources than Cobetia amphilecti N-80. The main genes associated with N metabolism in Halomonas profundus 13 are narG, narY, narI, nirS, norB, norC, nosZ, and nirD. On the contrast, nirD, using NH4+ for energy, plays a main role in Cobetia amphilecti N-80. Both of them have the same genes for fixing inorganic carbon: icd, ppc, fdhA, accC, accB, accD, and accA. Conclusion In this study, the whole genomes of two strains were sequenced to clarify the basic characteristics of their genomes, laying the foundation for further studying nitrogen-metabolizing bacteria. Halomonas profundus 13 can utilize more carbon sources than Cobetia amphilecti N-80, as indicated by API as well as COG and KEGG prediction results. Finally, through the analysis of the nitrification and denitrification abilities as well as the inorganic carbon fixation ability of the two strains, the related genes were identified, and the possible metabolic pathways were predicted. Together, these results provide molecular markers and theoretical support for the mechanisms of inorganic carbon fixation by deep-sea microorganisms.

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Section: Discussionmentioning

confidence: 99%

Complete genome sequencing and comparison of two nitrogen-metabolizing bacteria isolated from Antarctic deep-sea sediment

et al. 2022

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Halomonas

Ventosa

Haba

Arahal

et al. 2021

Bergey's Manual of Systematics of Archaea and Bacteria

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Ha.lo.mo'nas. Gr. masc. n. hals halos salt; L. fem. n. monas a unit, monad; N.L. fem. n. Halomonas salt (‐tolerant) monad. Proteobacteria / Gammaproteobacteria / Oceanospirillales / Halomonadaceae / Halomonas The genus Halomonas is classified within the family Halomonadaceae and the order Oceanospirillales in the class Gammaproteobacteria . The cells are Gram‐stain‐negative and non‐endospore‐forming rods. Most strains are motile. Colonies are cream, cream‐yellow, yellow, white, brown, or orange pigmented. Chemoorganotrophic. Strictly aerobic or facultatively anaerobic. Catalase‐positive and oxidase‐variable. Halophilic or halotolerant. Some species are haloalkaliphilic or psychrotolerant. Optimal growth at 0–15% (w/v) NaCl, pH 6.0–10.0, and 20–40°C. The predominant cellular fatty acids include C 16:0 , C 18:1 ω7 c , C 16:1 ω7 c , C 12:0 3‐OH, and C 19:0 cyclo ω8 c . The predominant respiratory quinone is Q‐9. Currently, the genus includes 102 species, with Halomonas elongata as type species. The strains of the species of this genus were isolated from marine, saline, or hypersaline environments and other saline habitats or salted food. DNA G + C content (mol%) : 51.4–74.3. Type species : Halomonas elongata Vreeland et al. 1980 VP .

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Halomonas flagellata sp. nov., a halophilic bacterium isolated from saline soil in Xinjiang

Huang,

Abdugheni,

et al. 2023

Arch Microbiol

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Halomonas sambharensis sp. nov., a Moderately Halophilic Bacterium Isolated from the Saltern Crystallizer Ponds of the Sambhar Salt Lake in India

Cited by 5 publications

References 37 publications

Complete genome sequencing and comparison of two nitrogen-metabolizing bacteria isolated from Antarctic deep-sea sediment

Complete genome sequencing and comparison of two nitrogen-metabolizing bacteria isolated from Antarctic deep-sea sediment

Halomonas

Halomonas flagellata sp. nov., a halophilic bacterium isolated from saline soil in Xinjiang

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