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sp. nov., a bacterium isolated from the air of the Icelandic volcanic island Surtsey.
Int J Syst Evol Microbiol
January 2025
Department of Research and Innovation, MATIS, Reykjavk, Iceland.
A novel bacterium, designated 19SA41, was isolated from the air of the Icelandic volcanic island Surtsey. Cells of strain 19SA41 are Gram-stain-negative, strictly aerobic, non-motile rods and form pale yellow-pigmented colonies. The strain grows at 4-30 °C (optimum, 22 °C), at pH 6-10 (optimum, pH 7.
View Article and Find Full Text PDFIron limitation triggers roseoceramide biosynthesis and membrane remodeling in marine roseobacter.
Proc Natl Acad Sci U S A
January 2025
Department of Chemistry, Princeton University, Princeton, NJ 08544.
Chemical communication between marine bacteria and their algal hosts drives population dynamics and ultimately determines the fate of major biogeochemical cycles in the ocean. To gain deeper insights into this small molecule exchange, we screened niche-specific metabolites as potential modulators of the secondary metabolome of the roseobacter, . Metabolomic analysis led to the identification of a group of cryptic lipids that we have termed roseoceramides.
View Article and Find Full Text PDFUnveiling remarkable bacterial diversity trapped by cowpea (Vigna unguiculata) nodules inoculated with soils from indigenous lands in Central-Western Brazil.
Braz J Microbiol
January 2025
Department of Biochemistry and Biotechnology, Universidade Estadual de Londrina, PR-445, Km 380, C.P. 10.011, CEP 86.057-970, Londrina, Paraná, Brazil.
Cowpea (Vigna unguiculata) is recognized as a promiscuous legume in its symbiotic relationships with rhizobia, capable of forming associations with a wide range of bacterial species. Our study focused on assessing the diversity of bacterial strains present in cowpea nodules when inoculated with soils from six indigenous lands of Mato Grosso do Sul state, Central-Western Brazil, comprising the Cerrado and the Pantanal biomes, which are known for their rich diversity. The DNA profiles (BOX-PCR) of 89 strains indicated great genetic diversity, with 20 groups and 23 strains occupying single positions, and all strains grouped at a final similarity level of only 25%.
View Article and Find Full Text PDFA rhamnose-rich O-antigen of MP20 is required for symbiosis with .
J Bacteriol
January 2025
Department of Biological Sciences, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA.
a β-proteobacterium, forms a nitrogen-fixing symbiosis with many species of the large legume genus as well as with common bean ( L.). are considered to have evolved nodulation independently from the well-studied α-proteobacteria symbionts of legumes.
View Article and Find Full Text PDFGlobal Gac/Rsm regulatory system activates the biosynthesis of mupirocin by controlling the MupR/I quorum sensing system in sp. NCIMB 10586.
Appl Environ Microbiol
January 2025
State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China.
The biosynthesis of mupirocin, a clinically significant antibiotic produced by sp. NCIMB 10586, is activated by the -acyl homoserine lactone (AHL) MupR/I quorum sensing (QS) system. However, to date, limited research has focused on the influence of global regulators such as the GacS/A two-component system (TCS) on the MupR/I QS system or mupirocin biosynthesis.
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