Extremophiles最新文献

Prospecting the biotechnological potential of culturable halophilic bacteria isolated from Provadia salt deposit (Bulgaria) near the oldest salt production and urban complex in Europe. 探索从Provadia盐矿（保加利亚）分离的可培养的嗜盐细菌的生物技术潜力，该盐矿靠近欧洲最古老的盐田和城市综合体。

IF 2.6 3区生物学

Extremophiles Pub Date : 2025-04-16 DOI: 10.1007/s00792-025-01387-1

Kaloyan Berberov, Nikolina Atanasova, Gabriela Teodosiu-Beleuţă, Ivanka Boyadzieva

{"title":"Prospecting the biotechnological potential of culturable halophilic bacteria isolated from Provadia salt deposit (Bulgaria) near the oldest salt production and urban complex in Europe.","authors":"Kaloyan Berberov, Nikolina Atanasova, Gabriela Teodosiu-Beleuţă, Ivanka Boyadzieva","doi":"10.1007/s00792-025-01387-1","DOIUrl":"https://doi.org/10.1007/s00792-025-01387-1","url":null,"abstract":"Halophilic bacteria are recognized as a promising source of novel enzymes and biopolymers with various applications in biotechnology and the industry. In comparison with their mesophilic analogues, halophilic metabolites are stable under extreme conditions typically encountered in the industrial processes. In this study, the biotechnological potential of twenty strains of halophilic bacteria isolated from the Provadia salt deposit, Bulgaria was investigated for the first time. The strains were identified based on the sequencing of the 16S rRNA gene and were assigned to 13 different species falling in the Bacillota and Pseudomonadota phyla. The majority (90%) of them showed single or combined hydrolytic enzyme activity. Half of the strains (55%) were able to produce between three and eight extracellular hydrolytic enzymes-arabinase, cellulase, gelatinase, glucanase, L-glutaminase, pectinase, and xylanase. Ten strains were able to synthesise exopolysaccharides (EPS) in concentration between 32 and 227 μg/ml. The optimal EPS production kinetics (1.6 ± 0.15 g/l) by Virgibacillus halodenitrificans PSZ-34 was systematically investigated for the first time. Three strains also exhibited antimicrobial activity. The present study involved culture-dependant isolation of halophilic bacteria from the Provadia salt deposit and shed more light on their capability to synthesise hydrolytic enzymes and EPS with potential industrial exploitation.","PeriodicalId":12302,"journal":{"name":"Extremophiles","volume":"29 2","pages":"21"},"PeriodicalIF":2.6,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143980677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Screening and community succession and functional prediction of high-efficiency degradation microbial communities for rice straw at low-temperature. 水稻秸秆低温高效降解微生物群落筛选、群落演替及功能预测

IF 2.6 3区生物学

Extremophiles Pub Date : 2025-04-11 DOI: 10.1007/s00792-025-01386-2

Qiqi Fan, Yu Zhang, Jie Lian, Dong Liang, Jiang Yu, Xiaofei Liu, Na Zhang

{"title":"Screening and community succession and functional prediction of high-efficiency degradation microbial communities for rice straw at low-temperature.","authors":"Qiqi Fan, Yu Zhang, Jie Lian, Dong Liang, Jiang Yu, Xiaofei Liu, Na Zhang","doi":"10.1007/s00792-025-01386-2","DOIUrl":"https://doi.org/10.1007/s00792-025-01386-2","url":null,"abstract":"Traditional straw return relies on microbial degradation, but cold winters delay it, risking crops. Therefore, a microbial community adapted to rice straw degradation in cold regions was constructed by restrictive consecutively sub-cultured under low-temperature limitations. The capabilities of the microbial community, such as adaptability, stability, and degradation power, were evaluated by analyzing straw degradation features, Characterization experiments and lignocellulose enzyme activities across multiple generations. 16S amplicon sequencing was used to monitor the changes in its structure over generations. Metagenomic sequencing uses CAZy and KEGG to classify gene functions. The results showed that the highest degradation efficiencies and enzyme activities were observed in the E and F generations, dominated by Proteobacteria, Bacteroidetes, and Fungi The stable microbial community was designated as LJ-7. Metagenomic analysis showed that functional genes of LJ-7 were mainly concentrated in glycoside hydrolase (GHs) and glycosyl transferase (GTs) related genes which contained many fiber and lignin-degrading enzyme genes. It is speculated that microbial enzymes degrade straw by breaking down its complex structure into monosaccharides or metabolizing quinone compounds for energy. This experiment successfully screened a microbial community capable of degrading rice straw at low temperatures, thus offering novel research insights and pathways for straw degradation in cold conditions.","PeriodicalId":12302,"journal":{"name":"Extremophiles","volume":"29 2","pages":"20"},"PeriodicalIF":2.6,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144001829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energetic investigations of Acidianus ambivalens metabolism during anaerobic sulfur reduction and comparisons to aerobic sulfur oxidation. 厌氧硫还原过程中伏地酸浆菌新陈代谢的能量研究以及与有氧硫氧化过程的比较。

IF 2.6 3区生物学

Extremophiles Pub Date : 2025-04-04 DOI: 10.1007/s00792-025-01385-3

Chloé E Hart, Drew Gorman-Lewis

{"title":"Energetic investigations of Acidianus ambivalens metabolism during anaerobic sulfur reduction and comparisons to aerobic sulfur oxidation.","authors":"Chloé E Hart, Drew Gorman-Lewis","doi":"10.1007/s00792-025-01385-3","DOIUrl":"10.1007/s00792-025-01385-3","url":null,"abstract":"Acidianus ambivalens is a metabolically flexible facultative anaerobe that can oxidize and reduce elemental sulfur with O2 and H2, respectively. In this work, the growth energetics of Acidianus ambivalens were determined under anaerobic conditions at 76 °C with H2 oxidation by elemental sulfur serving as the energy-yielding catabolic reaction. The biomass yields (C-mol of biomass per mol of H2 consumed) ranged from approximately 0.004 to 0.01. Growth rates ranged from 0.003 to 0.012 h-1. Gibbs energies of incubation based on macrochemical equations of cell growth ranged from - 881 to - 3349 kJ/C-mol. Enthalpies of incubation determined from calorimetric measurements ranged from - 610 to - 4090 kJ/C-mol. The Gibbs energy consumed by anaerobic cultures was compared to sulfur-oxidizing cultures under aerobic and microaerobic conditions to determine the effects of environmental and substrate redox state on energetics. This comparison revealed that aerobic cultures were inefficient relative to microaerobic and anaerobic conditions. These results suggest that aerobic conditions induce a measurable oxidative stress on cultures. The similarities in growth efficiency and energy budgets under microaerobic and anaerobic conditions may allow Acidianus ambivalens to be competitive in natural environments either by oxidizing or reducing elemental sulfur.","PeriodicalId":12302,"journal":{"name":"Extremophiles","volume":"29 2","pages":"19"},"PeriodicalIF":2.6,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143779574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adapting to salinity: structural dynamics of the DNA polymerase III beta subunit in Salinibacter ruber. 适应盐度：橡胶盐杆菌DNA聚合酶III β亚基的结构动力学。

IF 2.6 3区生物学

Extremophiles Pub Date : 2025-03-25 DOI: 10.1007/s00792-025-01384-4

Aveepsa Sengupta, Dhrubajyoti Das, Anisha Debnath, Yusuf Akhter, Ashutosh Kumar

引用次数: 0

From genes to nanotubes: exploring the UV-resistome in the Andean extremophile Exiguobacterium sp. S17. 从基因到纳米管：探索安第斯极端微生物Exiguobacterium sp. S17的紫外线抵抗组。

IF 2.6 3区生物学

Extremophiles Pub Date : 2025-02-18 DOI: 10.1007/s00792-025-01383-5

Fátima Silvina Galván, Daniel Gonzalo Alonso-Reyes, Virginia Helena Albarracín

{"title":"From genes to nanotubes: exploring the UV-resistome in the Andean extremophile Exiguobacterium sp. S17.","authors":"Fátima Silvina Galván, Daniel Gonzalo Alonso-Reyes, Virginia Helena Albarracín","doi":"10.1007/s00792-025-01383-5","DOIUrl":"10.1007/s00792-025-01383-5","url":null,"abstract":"Exiguobacterium sp. S17, a polyextremophile isolated from a High-Altitude Andean Lake, exhibits a multi-resistance profile against toxic arsenic concentrations, high UV radiation, and elevated salinity. Here, we characterize the mechanisms underlying the UV resistance of Exiguobacterium sp. S17 (UV-resistome) through comparative genomics within the Exiguobacterium genus and describe morphological and ultrastructural changes using Scanning (SEM) and Transmission (TEM) Electron Microscopy.UV-resistome in Exiguobacterium species ranges from 112 to 132 genes. While we anticipated Exiguobacterium sp. S17 to lead the non-HAAL UV-resistome, it ranked eleventh with 113 genes. This larger UV-resistome in Exiguobacterium spp. aligns with their known adaptation to extreme environments. With SEM/TEM analyses we observed the formation of nanotubes (NTs), a novel finding in Exiguobacterium spp., which increased with higher UV-B doses. These NTs, confirmed to be membranous structures through sensitivity studies and imaging, suggest a role in cellular communication and environmental sensing. Genomic evidence supports the presence of essential NT biogenesis genes in Exiguobacterium sp. S17, further elucidating its adaptive capabilities.Our study highlights the complex interplay of genetic and phenotypic adaptations enabling Exiguobacterium sp. S17 to thrive in extreme UV environments. The novel discovery of NTs under UV stress presents a new avenue for understanding bacterial survival strategies in harsh conditions.","PeriodicalId":12302,"journal":{"name":"Extremophiles","volume":"29 1","pages":"17"},"PeriodicalIF":2.6,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143440434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DNA methylation confers epigenetic changes in cold-adapted microorganisms in response to cold stress. DNA甲基化赋予冷适应微生物对冷胁迫的表观遗传变化。

IF 2.6 3区生物学

Extremophiles Pub Date : 2025-02-13 DOI: 10.1007/s00792-025-01381-7

Xuying Bu, Xufeng Dou, Zhe Chen, Lan Liu, Yuxia Mei, Min Ren

{"title":"DNA methylation confers epigenetic changes in cold-adapted microorganisms in response to cold stress.","authors":"Xuying Bu, Xufeng Dou, Zhe Chen, Lan Liu, Yuxia Mei, Min Ren","doi":"10.1007/s00792-025-01381-7","DOIUrl":"10.1007/s00792-025-01381-7","url":null,"abstract":"DNA methylation modification regulates gene expression during temperature stress. The adaptation mechanisms of cold-adapted microorganisms to low temperatures have been explained at the gene and metabolic levels. However, considering the important epigenetic modification in cells, the role of genomic modification in cold-adapted microorganisms remains underexplored. This study aims to discuss the regulatory role of DNA methylation in the cold response of psychrotroph Exiguobacterium undae TRM 85608. Methylome analysis shows that the methylation level of most genes in the bacterium decreases under cold stress. Combined with transcriptome results, the expression of important cold-response genes such as ABC transporter permease and ATP-binding proteins increases, but their methylation levels decrease, which is associated with a reduction of DNA adenine methyltransferase. We believe that the reduction in genomic methylation modification caused by low temperature is a major factor in stabilizing the normal growth of the cell. The bacterium counteracts cold stress by reducing the expression of methylation modification enzymes and weakening the inhibition of cold-response gene modification. These findings provide new insights into how psychrophilic organisms adapt to low temperatures.","PeriodicalId":12302,"journal":{"name":"Extremophiles","volume":"29 1","pages":"16"},"PeriodicalIF":2.6,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143406472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Extremophilic and common fungi in acid brines and their halite. 嗜极真菌和酸性盐水中的普通真菌及其盐岩。

IF 2.6 3区生物学

Extremophiles Pub Date : 2025-02-11 DOI: 10.1007/s00792-025-01382-6

Kathleen C Benison, John E Hallsworth, Polona Zalar, Miha Glavina, Nina Gunde-Cimerman

{"title":"Extremophilic and common fungi in acid brines and their halite.","authors":"Kathleen C Benison, John E Hallsworth, Polona Zalar, Miha Glavina, Nina Gunde-Cimerman","doi":"10.1007/s00792-025-01382-6","DOIUrl":"10.1007/s00792-025-01382-6","url":null,"abstract":"Studies of microorganisms in extreme Mars-analog environments have generally overlooked fungi. Here, we document fungi in lake waters, slime, and halite of the acid-saline Lakes Magic and Gneiss in Western Australia with pH 1.4-3.5 and 7-32% total dissolved solids (TDS). Both extremotolerant fungi, including ascomycete Parengyodontium torokii, and relatively common fungi (mesophilic), including Penicillium breviocompactum and Trametes pubescens, were present. Our discovery of P. torokii in halite is among the first known fungal examples of such preservation, and we propose that it has the biological traits of a generalist species. Nine strains of the dominant P. torokii fungi were tested for growth on diverse salts. The presence of mesophilic fungal saprotrophs in these lakes, along with extremophilic fungi, algae, bacteria, and archaea, suggests transport of the former into indigenous lake populations. This reveals a distinction between habitability and preservation potential; not all biosignatures in lake waters or their halite represent organisms that were active in situ. Our results suggest that searches for biosignatures in extreme waters and salt minerals on Earth and Mars should include the possibility of fungi. Additionally, interpretations of microbial communities in both modern brines and the rock record should consider the likelihood of mixed indigenous and transported taxa.","PeriodicalId":12302,"journal":{"name":"Extremophiles","volume":"29 1","pages":"15"},"PeriodicalIF":2.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143398912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ABC-type salt tolerance transporter genes are abundant and mutually shared among the microorganisms of the hypersaline Sambhar Lake. abc型耐盐转运基因在桑巴湖高盐微生物中丰富且相互共享。

IF 2.6 3区生物学

Extremophiles Pub Date : 2025-01-28 DOI: 10.1007/s00792-025-01378-2

Srikanta Pal, Raju Biswas, Abhijit Sar, Arijit Misra, Somasri Dam, Bomba Dam

{"title":"ABC-type salt tolerance transporter genes are abundant and mutually shared among the microorganisms of the hypersaline Sambhar Lake.","authors":"Srikanta Pal, Raju Biswas, Abhijit Sar, Arijit Misra, Somasri Dam, Bomba Dam","doi":"10.1007/s00792-025-01378-2","DOIUrl":"10.1007/s00792-025-01378-2","url":null,"abstract":"To fish-out novel salt-tolerance genes, metagenomic DNA of moderately saline sediments of India's largest hypersaline Sambhar Lake was cloned in fosmid. Two functionally-picked clones helped the Escherichia coli host to tolerate 0.6 M NaCl. Deep sequencing of their fosmid DNA insert revealed 32-37% of genes to encode transporters, mostly belonging to ABC (ATP-Binding Cassette)-type, but none specific to channel Na+. The complete metagenome sequence of Sambhar Lake brines, and reanalysed data of twelve other hypersaline metagenome sequences, however, have only around 5% transporter genes, suggesting metagenomic DNA fragments being biasedly-cloned during functional screening. Almost half of the ~ 40 Kb inserts in the two clones was shared, and encode several transporters, and some transposase. This advocates that these transporter-loaded DNA lengths are shuttled among microorganisms of hypersaline environments. Interestingly, one clone showed retarded growth with prominent cell disruptions in scanning electron microscopic images, when fosmid copy number was increased or transporters were NaCl-induced. Its cloned insert exclusively has three genes, encoding a structurally functional ATP-binding protein and its efflux component, whose possible overexpression led to membrane crowding and cell rupture. Thus, microorganisms thriving in hypersaline lakes have plentiful ABC transporters that are mutually shared among themselves. These novel salt tolerance genes have future agricultural biotechnological potential.","PeriodicalId":12302,"journal":{"name":"Extremophiles","volume":"29 1","pages":"14"},"PeriodicalIF":2.6,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143052105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Halobellus marinus sp. nov., Halobellus ordinarius sp. nov., Halobaculum rarum sp. nov., and Halorarum halobium sp. nov., halophilic archaea isolated from marine solar salt and a saline lake. 从海洋太阳盐和盐湖中分离出的嗜盐古菌——海洋盐藻、普通盐藻、稀有盐藻和盐藻。

IF 2.6 3区生物学

Extremophiles Pub Date : 2025-01-27 DOI: 10.1007/s00792-025-01379-1

Ling-Rui Zhu, Chidiebele Nwankwo, Jing Hou, Heng-Lin Cui

{"title":"Halobellus marinus sp. nov., Halobellus ordinarius sp. nov., Halobaculum rarum sp. nov., and Halorarum halobium sp. nov., halophilic archaea isolated from marine solar salt and a saline lake.","authors":"Ling-Rui Zhu, Chidiebele Nwankwo, Jing Hou, Heng-Lin Cui","doi":"10.1007/s00792-025-01379-1","DOIUrl":"10.1007/s00792-025-01379-1","url":null,"abstract":"Four halophilic archaeal strains were isolated from sea salt and a saline lake in China. Based on phylogenetic and phylogenomic analyses, the four strains are related to the genera of Halobellus, Halobaculum, and Halorarum within the family Haloferacaceae. The four strains possess genes responsible for carotenoid synthesis, maintenance of a high internal salt concentration, as well as diverse enzymes with biotechnological potential. The average nucleotide identity (ANI), average amino acid identity (AAI), and digital DNA-DNA hybridization (dDDH) values among these four strains and their related species were lower than the established thresholds proposed for species demarcation. Strains DFY28T, ZY16T, QDC11T, and XH14T were distinguished from related species based on a variety of phenotypic characteristics. The major polar lipids of these four strains were similar to those of respective relatives within the genera Halobellus, Halobaculum, and Halorarum. The phenotypic, phylogenetic, and genome-based analyses suggest that strains DFY28T (= CGMCC 1.17470T = JCM 34310T), ZY16T (= CGMCC 1.17476T = JCM 34311T), QDC11T (= MCCC 4K00127T = KCTC 4308T), and XH14T (= CGMCC 1.17028T = JCM 34145T) represent four novel species of the genera Halobellus, Halobaculum and Halorarum, for which the names Halobellus marinus sp. nov., Halobellus ordinarius sp. nov., Halobaculum rarum sp. nov., and Halorarum halobium sp. nov. are proposed.","PeriodicalId":12302,"journal":{"name":"Extremophiles","volume":"29 1","pages":"13"},"PeriodicalIF":2.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143046121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Genomic highlights of the phylogenetically unique halophilic purple nonsulfur bacterium, Rhodothalassium salexigens. 系统发育上独特的嗜盐紫色非硫细菌Rhodothalassium salexigens的基因组亮点。

IF 2.6 3区生物学

Extremophiles Pub Date : 2025-01-25 DOI: 10.1007/s00792-025-01380-8

Michael T Madigan, Kelly S Bender, Mary N Parenteau, Yukihiro Kimura, Zheng-Yu Wang-Otomo, W Matthew Sattley

{"title":"Genomic highlights of the phylogenetically unique halophilic purple nonsulfur bacterium, Rhodothalassium salexigens.","authors":"Michael T Madigan, Kelly S Bender, Mary N Parenteau, Yukihiro Kimura, Zheng-Yu Wang-Otomo, W Matthew Sattley","doi":"10.1007/s00792-025-01380-8","DOIUrl":"10.1007/s00792-025-01380-8","url":null,"abstract":"Rhodothalassium (Rts.) salexigens is a halophilic purple nonsulfur bacterium and the sole species in the genus Rhodothalassium, which is itself the sole genus in the family Rhodothalassiaceae and sole family in the order Rhodothalassiales (class Alphaproteobacteria). The genome of this phylogenetically unique phototroph comprises 3.35 Mb and is highly chimeric, with nearly half of its genes originating from families other than the Rhodothalassiaceae, many of which lack phototrophic species. Photosynthesis genes in Rts. salexigens are not arranged in a typical photosynthesis gene cluster but are scattered across the genome, suggesting an origin from horizontal transfers. Despite an encoded RuBisCO, autotrophy has not been observed in Rts. salexigens, and enzymes that oxidize common inorganic electron donors are not encoded. Phospholipid biosynthesis in Rts. salexigens is restricted, and phosphoglycerolipids are the only phospholipids present in its intracytoplasmic membranes. Rts. salexigens fixes nitrogen using a Mo-containing nitrogenase and uses ammonia despite previous results that indicated it was a glutamate auxotroph. Glycine betaine is the sole osmolyte in Rts. salexigens, and enzymes are encoded that facilitate both its uptake and its biosynthesis from glycine. The genomic data also support chemotactic swimming motility, growth over a range of salinities, and the production of membrane-strengthening hopanoids.","PeriodicalId":12302,"journal":{"name":"Extremophiles","volume":"29 1","pages":"12"},"PeriodicalIF":2.6,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11762602/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143037780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0