Here, we describe a simple, non-time consuming and inexpensive method for monitoring of Calcofluor white M2R-binding exopolysaccharides in individual bacterial cells. This method was demonstrated by time-lapse microscopy of succinoglycan-producing cells of the plant-symbiotic alpha-proteobacterium Sinorhizobium meliloti. The method is most likely applicable to other bacteria producing β-(1→3) and β-(1→4) linked polysaccharides.
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http://dx.doi.org/10.1016/j.carbpol.2017.11.059 | DOI Listing |
Int J Biol Macromol
January 2025
Department of Bioscience and Biotechnology, Microbial Carbohydrate Resource Bank (MCRB), Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, South Korea; Department of System Biotechnology, Microbial Carbohydrate Resource Bank (MCRB), Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, South Korea. Electronic address:
Highly succinylated succinoglycan (HS-SG) was prepared by reacting succinic anhydride with succinoglycan (SG) exopolysaccharide isolated from Sinorhizobium meliloti. The rheological, physicochemical properties, and antioxidant effects of HS-SG were evaluated in comparison with SG. NMR and FTIR analyses confirmed that HS-SG retained the characteristic glycosidic structure of SG while showing a relative increase in succinyl functional groups.
View Article and Find Full Text PDFPlant Sci
January 2025
UMR INRAE 1355, Université Nice Côte d'Azur, Institut Sophia Agrobiotech, 06903 Sophia Antipolis, France. Electronic address:
Flooding induces hypoxia in plant tissues, impacting various physiological and biochemical processes. This study investigates the adaptive response of the roots and nitrogen-fixing nodules of Medicago truncatula in symbiosis with Sinorhizobium meliloti under short-term hypoxia caused by flooding. Four-week-old plants were subjected to flooding for 1 to 4 days.
View Article and Find Full Text PDFGenome Biol Evol
January 2025
Department of Biology, University of Florence, 50019 Sesto Fiorentino, Italy.
In prokaryotes, DNA methylation plays roles in DNA repair, gene expression, cell cycle progression, and immune recognition of foreign DNA. Genome-wide methylation patterns can vary between strains, influencing phenotype, and gene transfer. However, broader evolutionary studies on bacterial epigenomic variation remain limited.
View Article and Find Full Text PDFBiochim Biophys Acta Proteins Proteom
December 2024
Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral and CONICET, S3000ZAA Santa Fe, Argentina.
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