English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Bacteria of  Halomonas  are widely distributed in various environments and play a substantial role in the nutrient cycle. In this report, 14 strains capable of aerobic denitrification and heterotrophic sulfur oxidation were isolated from different habitats. Based on the phenotypic, genotypic, and chemotaxonomic analyses, these strains were considered to represent six novel species of the genus  Halomonas , for which the names  Halomonas zhangzhouensis  sp. nov. type strain CXT3-11 T  ( = MCCC 1A11036 T  = KCTC 72087 T ),  Halomonas aerodenitrificans  sp. nov. CYD-9 T  ( = MCCC 1A11058 T  = KCTC 72088 T ),  Halomonas sulfidoxydans  sp. nov. CYN-1-2 T  ( = MCCC 1A11059 T  = KCTC 72089 T ),  Halomonas ethanolica  sp. nov. CYT3-1-1 T  ( = MCCC 1A11081 T  = KCTC 72090 T ),  Halomonas sulfidivorans  sp. nov. NLG_F1E T  ( = MCCC 1A13718 T  = KCTC 72091 T ), and  Halomonas tianxiuensis  sp. nov. BC-M4-5 T  ( = MCCC 1A14433 T  = KCTC 72092 T ) are proposed. Intriguingly, they formed a unique group with 11 other species designated as the “ H. desiderata  group.” To better understand their featured metabolisms, genes involved in denitrification and sulfur oxidation were analyzed, along with 193 other available genomes of the whole genus. Consistently, complete denitrification pathways were confirmed in the “ H. desiderata  group,” in which  napA ,  narG ,  nirS ,  norB , and  nosZ  genes coexist. Their nitrite reductase NirS formed a unique evolutionary lineage, distinguished from other denitrifiers in  Halomonas . In addition, diverse occurrence patterns of denitrification genes were also observed in different phylogenetic clades of  Halomonas . With respect to sulfur oxidation,  fccAB  genes involved in sulfide oxidation commonly exist in the “ H. desiderata  group,” while  sqr  genes are diverse and can be found in more species;  sqr  genes co-occurred with  fccAB  in eight strains of this study, contributing to more active sulfide oxidation. Besides, the  tsdA  gene, which encodes an enzyme that oxidizes thiosulfate to tetrathionate, is ubiquitous in the genus  Halomonas . The widespread presence of  sqr/fccAB ,  pdo , and  tsdA  in  Halomonas  suggests that many  Halomonas  spp. can act as heterotrophic sulfur oxidizers. These results provide comprehensive insights into the potential of denitrification and sulfur oxidation in the whole genus of  Halomonas . With regard to the global distribution of  Halomonas , this report implies their unneglectable role in the biogeochemical cycle.

frontiers in microbiology

Aerobic Denitrification and Heterotrophic Sulfur Oxidation in the Genus Halomonas Revealed by Six Novel Species Characterizations and Genome-Based Analysis