Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology最新文献

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Methylocystis borbori sp.nov., a novel methanotrophic bacterium from the sludge of a freshwater lake and its metabolic properties 淡水湖污泥中的一种新型甲烷营养细菌 Methylocystis borbori sp.nov. 及其代谢特性
IF 1.8 3区 生物学
Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology Pub Date : 2024-11-22 DOI: 10.1007/s10482-024-02039-8
Elena N. Kaparullina, Nadezhda V. Agafonova, Natalia E. Suzina, Denis S. Grouzdev, Nina V. Doronina
{"title":"Methylocystis borbori sp.nov., a novel methanotrophic bacterium from the sludge of a freshwater lake and its metabolic properties","authors":"Elena N. Kaparullina,&nbsp;Nadezhda V. Agafonova,&nbsp;Natalia E. Suzina,&nbsp;Denis S. Grouzdev,&nbsp;Nina V. Doronina","doi":"10.1007/s10482-024-02039-8","DOIUrl":"10.1007/s10482-024-02039-8","url":null,"abstract":"<div><p>A novel methanotrophic strain 9N<sup>T</sup> was isolated from the sludge of a freshwater lake. Cells were aerobic, Gram-stain-negative, non-motile pleomorphic rods with intracytoplasmic membrane systems that appropriate type-II methanotrophs and hemispherical and spherical exocellular formations on the perimeter of the cell wall surface. The novel isolate grows only on methane or methanol as the sole carbon and energy source, at 10–37 °C (optimum 28–30 °C), pH 4.5–9.0 (optimum 7.0–7.5), up to 1% NaCl (optimum 0.3–0.5%). Methanol supported the growth of the strain 9N<sup>T</sup> in a wide range of concentrations from 0.05 to 5.0% (v/v) with an optimum of 0.5% (v/v). The major fatty acids were C<sub>18:1</sub><i>ω</i>8<i>c</i> and C<sub>18:1</sub><i>ω</i>7<i>c</i>. Based on 16S rRNA gene sequence phylogenetic analysis, strain 9N<sup>T</sup> was closely related to representatives of the genus <i>Methylocystis</i> (96.5–98.3%). The genome of strain 9N<sup>T</sup> was 3.34 Mbp in size with 63.5% of G + C content. The average nucleotide identity and digital DNA–DNA hybridization values between strain 9N<sup>T</sup> and closely related type strains of genus <i>Methylocystis</i> were 78.0–82.4% and 20.9–24.3%, respectively. The careful genome annotation of the novel strain shows it possessed genes for the detoxification of arsenate and cyanides as well as genes potentially involved in plant growth promotion (such as biosynthesis of indoles, cytokinins, polyhydroxybutyrate, siderophore production, and nitrogen fixation). Based on the phylogenetic, phenotypic, chemotaxonomic and genomic data, we propose <i>Methylocystis borbori</i> sp. nov. as novel species of the genus <i>Methylocystis</i>. The type strain is 9N<sup>T</sup> (= VKM B-3616<sup>T</sup> = KCTC 92566<sup>T</sup>).</p></div>","PeriodicalId":50746,"journal":{"name":"Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology","volume":"118 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142679642","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
Reclassification of two Nocardiopsis species using whole genome analysis 利用全基因组分析对两种 Nocardiopsis 进行重新分类
IF 1.8 3区 生物学
Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology Pub Date : 2024-11-20 DOI: 10.1007/s10482-024-02038-9
Guendouz Dif, Nadjette Djemouai, Noureddine Bouras, Abdelghani Zitouni
{"title":"Reclassification of two Nocardiopsis species using whole genome analysis","authors":"Guendouz Dif,&nbsp;Nadjette Djemouai,&nbsp;Noureddine Bouras,&nbsp;Abdelghani Zitouni","doi":"10.1007/s10482-024-02038-9","DOIUrl":"10.1007/s10482-024-02038-9","url":null,"abstract":"<div><p>This study revisits the taxonomic classification of the genus <i>Nocardiopsis</i> through the application of advanced genome-based methodologies, representing a notable advancement beyond traditional approaches that primarily rely on 16S rRNA gene sequences and phenotypic traits. The advent of Next-Generation Sequencing (NGS) and sophisticated bioinformatic tools has enabled a more precise framework for prokaryotic classification. However, many recognized species still lack complete genome sequences. In this study, we employed overall genome-related indices (OGRI), particularly Average Nucleotide Identity (ANI) and digital DNA-DNA hybridization (dDDH), to reassess the phylogenetic relationships within the genus. Comparative analyses of complete 16S rRNA sequences demonstrated high genetic similarity between <i>N</i>. <i>umidischolae</i> 66/93<sup> T</sup> and <i>N</i>. <i>tropica</i> VKMAc-1457<sup> T</sup> (99.61% similarity), as well as between <i>N</i>. <i>rhodophaea</i> JCM15313<sup>T</sup> and <i>N</i>. <i>rosea</i> JCM15314<sup>T</sup> (100% identity). The dDDH, ANI%, FastANI%, ANIm, and ANIb values further supported these results, with 73.2%, 96.94%, 96.15%, 97.19%, and 96.74% for the former pair, and 93.6%, 99.13%, 99.97%, 99.98%, and 99.27% for the latter pair, respectively. All values surpassed the species delineation thresholds of 70% for dDDH and 95–96% for ANI. Consequently, we propose reclassifying <i>N</i>. <i>umidischolae</i> as a heterotypic synonym of <i>N</i>. <i>tropica</i>, and <i>N</i>. <i>rosea</i> as a heterotypic synonym of <i>N</i>. <i>rhodophaea</i>, in accordance with the International Code of Nomenclature of Prokaryotes (ICNP).</p></div>","PeriodicalId":50746,"journal":{"name":"Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology","volume":"118 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142672518","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
Correction: Isoptericola haloaureus sp. nov., a dimorphic actinobacterium isolated from mangrove sediments of southeast India, implicating biosaline agricultural significance through nitrogen fixation and salt tolerance genes 更正:Isoptericola haloaureus sp.
IF 1.8 3区 生物学
Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology Pub Date : 2024-11-18 DOI: 10.1007/s10482-024-02033-0
Munisamy Prathaban, Ragothaman Prathiviraj, Mythili Ravichandran, Sharmila Devi Natarajan, Murugesan Sobanaa, S. Hari Krishna Kumar, Varadharaju Chandrasekar, Joseph Selvin
{"title":"Correction: Isoptericola haloaureus sp. nov., a dimorphic actinobacterium isolated from mangrove sediments of southeast India, implicating biosaline agricultural significance through nitrogen fixation and salt tolerance genes","authors":"Munisamy Prathaban,&nbsp;Ragothaman Prathiviraj,&nbsp;Mythili Ravichandran,&nbsp;Sharmila Devi Natarajan,&nbsp;Murugesan Sobanaa,&nbsp;S. Hari Krishna Kumar,&nbsp;Varadharaju Chandrasekar,&nbsp;Joseph Selvin","doi":"10.1007/s10482-024-02033-0","DOIUrl":"10.1007/s10482-024-02033-0","url":null,"abstract":"","PeriodicalId":50746,"journal":{"name":"Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology","volume":"118 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142649694","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
A systematic approach to determine the outcome of the competition between two microbial species in bioreactor cocultures 确定生物反应器共培养物中两种微生物竞争结果的系统方法。
IF 1.8 3区 生物学
Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology Pub Date : 2024-11-14 DOI: 10.1007/s10482-024-02035-y
Marcin Bizukojć, Tomasz Boruta, Anna Ścigaczewska
{"title":"A systematic approach to determine the outcome of the competition between two microbial species in bioreactor cocultures","authors":"Marcin Bizukojć,&nbsp;Tomasz Boruta,&nbsp;Anna Ścigaczewska","doi":"10.1007/s10482-024-02035-y","DOIUrl":"10.1007/s10482-024-02035-y","url":null,"abstract":"<div><p>The two-species microbial cocultures are effective in terms of awakening the cryptic biosynthetic pathways. They may also lead to the improved production of previously discovered molecules. Importantly, only a few outcomes of the cocultures may prove desirable, namely those leading to the formation of useful secondary metabolites. To address this issue, a method allowing for the evaluation of the final outcome of the co-culture process and fine-tune the cocultivation strategy was proposed. The systematic approach was supported by the experimental data from the bioreactor runs with the participation of <i>Aspergillus terreus</i> and <i>Penicillium rubens</i> confronted with <i>Streptomyces rimosus</i> and <i>Streptomyces noursei</i>. Kinetic, morphological and metabolic aspects of dominance were analysed via the newly proposed formula describing the dominance pattern. The suggested method involved the determination of the numerical value representing the dominance level. When it was high (value 1) no useful metabolites were formed apart from those originating from the winning counterpart. But either for the partial dominances or when the winning organism changed within the run or when the competition ended in draw, the number of the secondary metabolites of interest in the broth was the highest. Next, the systematic approach illustrated how the delayed inoculation strategy influenced the level of dominance leading to the change of winning counterpart and the set of metabolites produced. The proposed systematic approach allows for the reliable determination of the level of dominance in the two-species cocultures to seek for the potentially useful substances for future applications.</p></div>","PeriodicalId":50746,"journal":{"name":"Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology","volume":"118 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10482-024-02035-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142632166","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
Parasalinivibrio latis gen. nov., sp. nov., isolated from the distal gut of healthy farmed Asian Seabass (Lates calcarifer) 从健康养殖的亚洲鲈鱼(Lates calcarifer)远端肠道中分离出的新属新种拉丁副嗜血杆菌(Parasalinivibrio latis gen.
IF 1.8 3区 生物学
Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology Pub Date : 2024-11-09 DOI: 10.1007/s10482-024-02036-x
Shuan Er, Melissa Soh, Adrian Low, Henning Seedorf
{"title":"Parasalinivibrio latis gen. nov., sp. nov., isolated from the distal gut of healthy farmed Asian Seabass (Lates calcarifer)","authors":"Shuan Er,&nbsp;Melissa Soh,&nbsp;Adrian Low,&nbsp;Henning Seedorf","doi":"10.1007/s10482-024-02036-x","DOIUrl":"10.1007/s10482-024-02036-x","url":null,"abstract":"<div><p>Asian Seabass (<i>Lates calcarifer</i>) is widely farmed as a sustainable source of protein for countries in the tropical Indo-West Pacific region. However, microbial species of the gut microbiome of healthy Asian Seabass remain largely uncharacterized and uncultured. Here, we analysed the microbial composition along the gastrointestinal tract of a farmed healthy Asian Seabass. We used different cultivation approaches to obtain isolates from the seabass intestinal tract and describe the isolation and characterization of a novel strain, TLL-SE01<sup>T</sup>. Analysis of the strain’s 16S rRNA gene indicates that the strain belongs to the family <i>Vibrionaceae</i> with <i>Photobacterium damselae</i> as its closest relative, albeit sharing only 94.8% (aligned region 1553 bp) nucleotide identity. Comparative genomic analysis with all validly published <i>Vibrionaceae</i> species with available genomes revealed average nucleotide identity (ANI) and DNA–DNA hybridisation (DDH) values of around 70% and 24% respectively to strain TLL-SE01<sup>T</sup>, which are well below proposed thresholds for species delineation (ANI, 95–96%; DDH, 70%). The alignment fraction and ANI genus demarcation boundaries for all genera in the <i>Vibrionaceae</i> family were determined for which strain TLL-SE01<sup>T</sup> is well below the calculated values, indicating that it belongs to a novel genus. Single- and core-gene phylogenetic analysis places strain TLL-SE01<sup>T</sup> in a monophyletic clade, further supporting its designation to a novel genus. Phenotypic comparison between strain TLL-SE01<sup>T</sup> and its close relatives indicated additional differences, such as growth response at different salt concentrations and different metabolic capabilities. Based on genotypic, phylogenetic and phenotypic differences to other <i>Vibrionaceae</i> species, we propose a novel species in a new genus, <i>Parasalinivibrio latis</i> gen. nov. sp. nov. and strain TLL-SE01<sup>T</sup> (= BCRC 81435<sup>T</sup> = JCM 36283<sup>T</sup>) as the type strain.</p></div>","PeriodicalId":50746,"journal":{"name":"Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology","volume":"118 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142596097","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
Roseobacter sinensis sp. nov., a marine bacterium capable to synthesize arachidonic acid 一种能够合成花生四烯酸的海洋细菌--Roseobacter sinensis sp.
IF 1.8 3区 生物学
Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology Pub Date : 2024-10-29 DOI: 10.1007/s10482-024-02034-z
Hong-Chuan Wang, Meng-Han Huang, Dan-Yuan Guo, Wen-Li Liu, Zi-Wen Yang, Dao-Feng Zhang, Wen-Jun Li
{"title":"Roseobacter sinensis sp. nov., a marine bacterium capable to synthesize arachidonic acid","authors":"Hong-Chuan Wang,&nbsp;Meng-Han Huang,&nbsp;Dan-Yuan Guo,&nbsp;Wen-Li Liu,&nbsp;Zi-Wen Yang,&nbsp;Dao-Feng Zhang,&nbsp;Wen-Jun Li","doi":"10.1007/s10482-024-02034-z","DOIUrl":"10.1007/s10482-024-02034-z","url":null,"abstract":"<div><p>Strain WL0113<sup>T</sup> was isolated from surface seawater of the coast of Lianyungang, Jiangsu province, PR China. Strain WL0113<sup>T</sup> shared highest 16S rRNA gene sequence similarity with <i>Roseobacter insulae</i> YSTF-M11<sup>T</sup> (98.8%), followed by <i>R. cerasinus</i> AI77<sup>T</sup> (98.8%), <i>R</i>. <i>ponti</i> MM-7<sup> T</sup> (98.0%). Strain WL0113<sup>T</sup> was Gram-stain-negative, cream, aerobic, non-motile and coccoid- to oval-shaped, and able to grow at pH 6.5–9.0 (optimum, pH 7.0–8.0), at 10–37  °C (optimum, 28 °C) and in the presence of 1–5% (w/v; optimum, 2.5%) NaCl. Ubiquinone-10 was detected as dominant. The main fatty acids (&gt; 5%) of the strain WL0113<sup>T</sup> were C<sub>16:0</sub>, iso-C<sub>17:0</sub> 3OH, C<sub>20:4</sub><i>ω</i>6,9,12,15<i>c</i> (arachidonic acid), and summed feature 8 (C<sub>18:1</sub><i>ω</i>7<i>c</i> and/or C<sub>18:1</sub><i>ω</i>6<i>c</i>). The major polar lipids include phosphatidylglycerol, diphosphatidylglycerol, phosphatidylcholine, glycophospholipid, unknown aminolipid, unknown phospholipid, and two unknown polar lipids. The ANI and dDDH values between strain WL0113<sup>T</sup> and <i>Roseobacter cerasinus</i> were 80.4% and 23.0%, respectively. The genomic DNA G + C content of strain WL0113<sup>T</sup> was 63.1%. Based on these data, it is proposed that strain WL0113<sup>T</sup> represent novel species of the genus <i>Roseobacter</i>, for which the name <i>Roseobacter sinensis</i> sp. nov. is proposed. The type strain is WL0113<sup>T</sup> (= GDMCC 1.3082<sup>T</sup> = JCM 35567<sup>T</sup>).</p></div>","PeriodicalId":50746,"journal":{"name":"Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology","volume":"118 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540758","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
Separation and purification of antimicrobial substances from Paenibacillus polymyxa KH-19 and analysis of its physicochemical characterization 从多粘毛芽孢杆菌 KH-19 中分离纯化抗菌物质并分析其理化特性。
IF 1.8 3区 生物学
Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology Pub Date : 2024-10-24 DOI: 10.1007/s10482-024-02029-w
Longtao Dou, Wei Liu, Jihua Hu, Shumei Zhang, Xianghui Kong, Xiaojun Qu, Wei Jiang
{"title":"Separation and purification of antimicrobial substances from Paenibacillus polymyxa KH-19 and analysis of its physicochemical characterization","authors":"Longtao Dou,&nbsp;Wei Liu,&nbsp;Jihua Hu,&nbsp;Shumei Zhang,&nbsp;Xianghui Kong,&nbsp;Xiaojun Qu,&nbsp;Wei Jiang","doi":"10.1007/s10482-024-02029-w","DOIUrl":"10.1007/s10482-024-02029-w","url":null,"abstract":"<div><p>Soft rot is one of the top ten most dangerous plant pathogens in agricultural production, storage, and transport, and the use of microorganisms and their metabolites to control soft rot is a current research hotspot. In this study, we identified the antimicrobial substance in the metabolite of <i>Paenibacillus polymyxa</i> KH-19, and determined that the antimicrobial substance of this strain was an active protein. The protein was completely precipitated at 40–60% ammonium sulphate saturation and showed good inhibitory effects against seven pathogenic bacteria including <i>Pectobacterium carotovorum</i> BC2 and seven pathogenic fungi including <i>Pyricularia oryzae</i>. The MIC of the protein was 51.563 µg/mL, temperature acid–base UV and light stability insensitive to protease, with high-temperature resistance. The antimicrobial protein was isolated and purified by DEAE-anion exchange column and Sephadex G-75 gel filtration chromatography, and the LC–MS/MS assay identified the protein as lysophosphatidyl esterase with a molecular weight of 25.255 kDa. The purified antimicrobial protein increased the inhibitory effect against <i>P. carotovorum</i> BC2, with the diameter of the circle of inhibition being 26.50 ± 0.915 mm. Bioinformatics analysis showed that the protein has the molecular formula of C<sub>1117</sub>H<sub>1732</sub>N<sub>316</sub>O<sub>338</sub>S<sub>5</sub>, encodes 224 amino acids, has an aliphatic index of 88.39, and belongs to the category of hydrophilic unstable proteins. The present study is the first report of an active protein with extreme thermoplastic and resistance to <i>P. carotovorum</i> BC2, which provides a reference for the preparation and application of the antimicrobial substances of <i>P. polymyxa</i> KH-19, as well as a theoretical basis for the study of the function of lysophosphodiesterase protein and its use as a microbial preparation.</p></div>","PeriodicalId":50746,"journal":{"name":"Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology","volume":"118 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142512374","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
Comparative genomic analyses of the genus Robertmurraya and proposal of the novel species Robertmurraya mangrovi sp. nov., isolated from mangrove soil Robertmurraya 属的基因组比较分析以及从红树林土壤中分离出的新物种 Robertmurraya mangrovi sp.
IF 1.8 3区 生物学
Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology Pub Date : 2024-10-23 DOI: 10.1007/s10482-024-02032-1
Ming Li, Xixi Hu, Tiancheng Ni, Yuan Ni, Dong Xue, Feng Li
{"title":"Comparative genomic analyses of the genus Robertmurraya and proposal of the novel species Robertmurraya mangrovi sp. nov., isolated from mangrove soil","authors":"Ming Li,&nbsp;Xixi Hu,&nbsp;Tiancheng Ni,&nbsp;Yuan Ni,&nbsp;Dong Xue,&nbsp;Feng Li","doi":"10.1007/s10482-024-02032-1","DOIUrl":"10.1007/s10482-024-02032-1","url":null,"abstract":"<div><p>A Gram-positive, aerobic, motile, rod-shaped bacterial strain, designated 31A1R<sup>T</sup>, was isolated from the mangrove soil of Xilian village, Zhanjiang, China. Strain 31A1R<sup>T</sup> thrives at temperatures ranging from 15 to 45 °C (optimum at 30 °C), pH 6.5–10 (optimum at 8.5), and in the presence of 0–5% (w/v) NaCl (optimum at 1.5%). The strain shares the highest 16S rRNA gene sequence similarity with <i>Robertmurraya crescens</i> (97.24%) and <i>Robertmurraya dakarensis</i> (97.18%). The complete genome of strain 31A1R<sup>T</sup> spans 4.71 Mbp with a genomic DNA G + C content of 35.9 mol%. The average nucleotide identity and DNA–DNA hybridization values between strain 31A1R<sup>T</sup> and type strains of other species of the genus <i>Robertmurraya</i> were 71.24–72.11% and 19.90–21.40%, respectively. The amino acid identity values and percentage of conserved proteins ranged from 66.94 to 68.10% and from 58.34 to 61.62%, respectively, aligning with intrageneric cutoff values. The major fatty acids (≥ 5.0%) were iso-C<sub>14:0</sub> (5.0%), iso-C<sub>15:0</sub> (41.4%), iso-C<sub>16:0</sub> (12.6%), C<sub>16:1</sub>ω7c alcohol (12.2%), and iso-C<sub>17:1</sub> ω10c (6.5%). The polar lipids profile was mainly composed of diphosphatidyl glycerol, phosphatidyl glycerol, and phosphatidyl ethanolamine. We also profiled the pan-genome and metabolic features of genomic assemblies of strains belonging to the genus <i>Robertmurraya</i>, which indicated functional capacities and metabolic similarities. Consequently, we propose that strain 31A1R<sup>T</sup> represents a new species in the genus <i>Robertmurraya</i>, for which the name <i>Robertmurraya mangrovi</i> sp. nov. is proposed, with the type strain being 31A1R<sup>T</sup> (= GDMCC 1.4378<sup>T</sup> = JCM 36937<sup>T</sup>).</p></div>","PeriodicalId":50746,"journal":{"name":"Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology","volume":"118 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142512373","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
Omics exploration of Tetraselmis chuii adaptations to diverse light regimes Omics 对 Tetraselmis chuii 适应不同光照制度的探索
IF 1.8 3区 生物学
Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology Pub Date : 2024-10-17 DOI: 10.1007/s10482-024-02028-x
Maria Patelou, Aikaterini Koletti, Carlos Infante, Dimitrios Skliros, Fotios Komaitis, Chrysanthi Kalloniati, Eleni Tsiplakou, Alexandros Mavrommatis, Lalia Mantecón, Emmanouil Flemetakis
{"title":"Omics exploration of Tetraselmis chuii adaptations to diverse light regimes","authors":"Maria Patelou,&nbsp;Aikaterini Koletti,&nbsp;Carlos Infante,&nbsp;Dimitrios Skliros,&nbsp;Fotios Komaitis,&nbsp;Chrysanthi Kalloniati,&nbsp;Eleni Tsiplakou,&nbsp;Alexandros Mavrommatis,&nbsp;Lalia Mantecón,&nbsp;Emmanouil Flemetakis","doi":"10.1007/s10482-024-02028-x","DOIUrl":"10.1007/s10482-024-02028-x","url":null,"abstract":"<div><p>Microalgae are significantly influenced by light quality and quantity, whether in their natural habitats or under laboratory and industrial culture conditions. The present study examines the adaptive responses of the marine microalga <i>Tetraselmis chuii</i> to different light regimes, using a cost-effective filtering method and a multi-omics approach. Microalgal growth rates were negatively affected by all filtered light regimes. After six days of cultivation, growth rate for cultures exposed to blue and green filtered light was 67%, while for red filter was 83%, compared to control cultures. Transcriptomic analysis revealed that the usage of green filters resulted in upregulation of transcripts involved in ribosome biogenesis or coding for elongation factors, exemplified by a 2.3-fold increase of <i>TEF3</i>. On the other hand, a 2.7-fold downregulation was observed in photosynthesis-related <i>petJ</i>. Exposure to blue filtered light led to the upregulation of transcripts associated with pyruvate metabolism, while photosynthesis was negatively impacted. In contrast, application of red filter induced minor transcriptomic alterations. Regarding metabolomic analysis, sugars, amino acids, and organic acids exhibited significant changes under different light regimes. For instance, under blue filtered light sucrose accumulated over 6-fold, while aspartic acid content decreased by 4.3-fold. Lipidomics analysis showed significant accumulation of heptadecanoic and linoleic acids under green and red light filters. Together, our findings indicate that filter light can be used for targeted metabolic manipulation.</p></div>","PeriodicalId":50746,"journal":{"name":"Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology","volume":"118 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142447305","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
Correction: Enterocin B3A-B3B produced by LAB collected from infant faeces: potential utilization in the food industry for Listeria monocytogenes biofilm management 更正:从婴儿粪便中收集的 LAB 产生的肠毒素 B3A-B3B:食品工业中用于单核细胞增多性李斯特菌生物膜管理的潜力
IF 1.8 3区 生物学
Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology Pub Date : 2024-10-16 DOI: 10.1007/s10482-024-02005-4
Alaa Al-Seraih, Yanath Belguesmia, John Baah, Sabine Szunerits, Rabah Boukherroub, Djamel Drider
{"title":"Correction: Enterocin B3A-B3B produced by LAB collected from infant faeces: potential utilization in the food industry for Listeria monocytogenes biofilm management","authors":"Alaa Al-Seraih,&nbsp;Yanath Belguesmia,&nbsp;John Baah,&nbsp;Sabine Szunerits,&nbsp;Rabah Boukherroub,&nbsp;Djamel Drider","doi":"10.1007/s10482-024-02005-4","DOIUrl":"10.1007/s10482-024-02005-4","url":null,"abstract":"","PeriodicalId":50746,"journal":{"name":"Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology","volume":"118 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438879","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
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