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Isolation and characterization of novel Staphylococcus aureus bacteriophage Hesat from dairy origin
Appl Microbiol Biotechnol. 2024 Apr 15;108(1):299. doi: 10.1007/s00253-024-13129-y.ABSTRACTA novel temperate phage, named Hesat, was isolated by the incubation of a dairy strain of Staphylococcus aureus belonging to spa-type t127 with either bovine or ovine milk. Hesat represents a new species of temperate phage within the Phietavirus genus of the Azeredovirinae subfamily. Its genome has a length of 43,129 bp and a GC content of 35.11% and contains 75 predicted ORFs, some of which linked to virulence. This includes (i) a pathogenicity island (SaPln2), homologous to the type II toxin-antitoxin system PemK/MazF family toxin;...
Source: Applied Microbiology and Biotechnology - April 15, 2024 Category: Microbiology Authors: Barbara Turchi Claudia Campobasso Arianna Nardinocchi Jeroen Wagemans Beatrice Torracca C édric Lood Graziano Di Giuseppe Paola Nieri Fabrizio Bertelloni Luca Turini Valeria Ruffo Rob Lavigne Mariagrazia Di Luca Source Type: research

Structural characteristics of gut microbiota in longevity from Changshou town, Hubei, China
This study can serve as a valuable addition to the current research on age-related GM. KEY POINTS: • The gut microbiota of elderly individuals with longevity and low BMI exhibit higher alpha diversity • Gut microbiota diversity did not differ significantly between genders in the elderly population • Several potentially beneficial bacteria (e.g., Akkermansia and Lactobacillus) are enriched in long-lived individuals.PMID:38619710 | PMC:PMC11018559 | DOI:10.1007/s00253-024-13140-3 (Source: Applied Microbiology and Biotechnology)
Source: Applied Microbiology and Biotechnology - April 15, 2024 Category: Microbiology Authors: Xu Ai Yu Liu Jinrong Shi Xiongwei Xie Linzi Li Rui Duan Yongling Lv Kai Xiong Yuanxin Miao Yonglian Zhang Source Type: research

Structural characteristics of gut microbiota in longevity from Changshou town, Hubei, China
This study can serve as a valuable addition to the current research on age-related GM. KEY POINTS: • The gut microbiota of elderly individuals with longevity and low BMI exhibit higher alpha diversity • Gut microbiota diversity did not differ significantly between genders in the elderly population • Several potentially beneficial bacteria (e.g., Akkermansia and Lactobacillus) are enriched in long-lived individuals.PMID:38619710 | DOI:10.1007/s00253-024-13140-3 (Source: Applied Microbiology and Biotechnology)
Source: Applied Microbiology and Biotechnology - April 15, 2024 Category: Microbiology Authors: Xu Ai Yu Liu Jinrong Shi Xiongwei Xie Linzi Li Rui Duan Yongling Lv Kai Xiong Yuanxin Miao Yonglian Zhang Source Type: research

Updated component analysis method for naturally occurring sophorolipids from Starmerella bombicola
In this study, we established a method for analyzing all SL derivatives in the products of Starmerella bombicola, a typical SL-producing yeast. Detailed component analyses of S. bombicola products were carried out using reversed-phase high-performance liquid chromatography and mass spectrometry. Methanol was used as the eluent as it is a good solvent for all SL derivatives. With this approach, it was possible to not only quantify the ratio of the main components of ASL, LSL, and SL glycerides but also confirm trace components such as SL mono-glyceride and bola-form SL (sophorose at both ends); notably, this is the first ti...
Source: Applied Microbiology and Biotechnology - April 12, 2024 Category: Microbiology Authors: Yosuke Kobayashi Qiushi Li Kazunori Ushimaru Makoto Hirota Tomotake Morita Tokuma Fukuoka Source Type: research

Pectate lyase genes from Radopholus similis and their application in pathotype identification
In this study, the parasitism and pathogenicity of 10 R. similis populations on rough lemon (Citrus limon) seedlings and the tropism and invasion of rough lemon roots were tested. It revealed that populations SWK, GJ, FZ, GZ, DBSR, and YJ were citrus pathotypes, which showed parasitism and pathogenicity on rough lemon and could invade rough lemon roots, whereas populations XIN, ML, HN6, and HL were banana pathotypes, having no parasitism and pathogenicity on rough lemon and they did not invade the rough lemon roots. Four pectate lyase genes (Rs-pel-2, Rs-pel-3, Rs-pel-4, and Rs-pel-5) belonging to the Class III family from...
Source: Applied Microbiology and Biotechnology - April 12, 2024 Category: Microbiology Authors: Sihua Yang Shuai Yang Qianying Li Yang Lu Xin Huang Chun Chen Chunling Xu Hui Xie Source Type: research

Strategies for the synthesis of the osmolyte glucosylglycerate and its precursor glycerate
Appl Microbiol Biotechnol. 2024 Apr 12;108(1):297. doi: 10.1007/s00253-024-13139-w.ABSTRACTGlycosidic osmolytes are widespread natural compounds that protect microorganisms and their macromolecules from the deleterious effects of various environmental stresses. Their protective properties have attracted considerable interest for industrial applications, especially as active ingredients in cosmetics and healthcare products. In that regard, the osmolyte glucosylglycerate is somewhat overlooked. Glucosylglycerate is typically accumulated by certain organisms when they are exposed to high salinity and nitrogen starvation, and ...
Source: Applied Microbiology and Biotechnology - April 12, 2024 Category: Microbiology Authors: Yentl Allaert Arthur Leyder Jorick Franceus Tom Desmet Source Type: research

Influence of combined abiotic/biotic factors on decay of P. aeruginosa and E. coli in Rhine River water
In this study, the effect of salinity, light, and temperature and the presence of indigenous microbiota, on the decay/persistence of Escherichia coli and Pseudomonas aeruginosa in Rhine River water were tested during 7 days of incubation with varying salinity (0.4, 5.4, 9.4, and 15.4 ppt), with light under a light/dark regime (light/dark) and without light (dark), temperature (3, 12, and 20 °C), and presence/absence of indigenous microbiota. The results demonstrated that light, indigenous microbiota, and temperature significantly impacted the decay of E. coli. Moreover, a significant (p<0.01) four-factor interactive im...
Source: Applied Microbiology and Biotechnology - April 10, 2024 Category: Microbiology Authors: Sha Gao Nora B Sutton Thomas V Wagner Huub H M Rijnaarts Paul W J J van der Wielen Source Type: research

Manganese reductive dissolution coupled to Sb mobilization in contaminated shooting range soil
Appl Microbiol Biotechnol. 2024 Apr 10;108(1):295. doi: 10.1007/s00253-024-13133-2.ABSTRACTA "redox-stat" RMnR bioreactor was employed to simulate moderately reducing conditions (+ 420 mV) in Sb-contaminated shooting range soils for approximately 3 months, thermodynamically favoring Mn(IV) reduction. The impact of moderately reducing conditions on elemental mobilization (Mn, Sb, Fe) and speciation [Sb(III) versus Sb(V); Fe2+/Fe3+] was compared to a control bioreactor RCTRL without a fixed redox potential. In both bioreactors, reducing conditions were accompanied by an increase in effluent Sb(V) and Mn(II) concentrations, s...
Source: Applied Microbiology and Biotechnology - April 10, 2024 Category: Microbiology Authors: Lara Costa Mathieu Martinez Marcel Suleiman Rolf Keiser Moritz Lehmann Markus Lenz Source Type: research