PMID: 7337433Jan 1, 1981Paper

Cellular glycogen, beta-1,2,-glucan, poly beta-hydroxybutyric acid and extracellular polysaccharides in fast-growing species of Rhizobium

Antonie van Leeuwenhoek
L P Zevenhuizen

Abstract

Synthesis of acidic exopolysaccharides, neutral cellular polysaccharides and poly-beta-hydroxybutyric acid (PHB) by Rhizobium is strongly dependent on cultural conditions and the strains used. Exopolysaccharide production by R. leguminosarum, R. Phaseoli and R. trifolii closely parallels growth, whereas R. meliloti mainly excretes (low mol wt) polysaccharides when cell propagation is limited by lack of a necessary growth element (nitrogen) and an excess of carbon source is still present in the medium. In all strains, accumulation of cellular glycogen, beta-1,2-glucan and PHB is initiated only under growth-limiting conditions. When the external carbon source is exhausted, glycogen and PHB are metabolized by the cells, sustaining their longevity and thus act as true reserve materials; on the other hand, beta-1,2-glucan and excreted polysaccharides are not utilized on further incubation of the culture. Differences exist in the nature and relative amounts of the products synthesized by strains of different species of Rhizobium. R. leguminosarum, R. phaseoli and R. trifolii synthesize a uronic containing exopolysaccharide, PHB and/or glycogen, non-metabolizable capsular polysaccharide and low amounts of beta-1,2-glucan. R. meliloti ...Continue Reading

References

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Citations

Jan 1, 1985·Antonie van Leeuwenhoek·M M Carranza de StoraniN E Ghittoni
May 17, 2006·Applied Microbiology and Biotechnology·Maria A Trainer, Trevor C Charles
Sep 22, 1999·European Journal of Biochemistry·J C PortaisJ N Barbotin
Jan 28, 2005·Molecular Plant-microbe Interactions : MPMI·E M LodwigP S Poole
Nov 22, 2001·Journal of Bacteriology·S L López-GarcíaA R Lodeiro
Mar 27, 2002·Journal of Bacteriology·Sergio EncarnaciónJaime Mora
Jun 23, 2011·BMC Genomics·Daniela KalhoeferThorsten Brinkhoff
Dec 16, 2006·Prikladnaia biokhimiia i mikrobiologiia·A P BonartsevA L Iordanskiĭ
Dec 8, 2015·Canadian Journal of Microbiology·Tam T Tran, Trevor C Charles
Nov 5, 2002·FEMS Microbiology Reviews·Jean-Charles Portais, Anne-Marie Delort
Jul 18, 2008·FEMS Microbiology Ecology·William C RatcliffRobert Ford Denison
Apr 4, 2017·Environmental Microbiology·Saraladevi MuthusamyJarone Pinhassi
Sep 6, 2017·Molecular Plant-microbe Interactions : MPMI·Justin P HawkinsIvan J Oresnik
Apr 7, 1999·Biotechnology and Bioengineering·P TavernierJ N Barbotin
Sep 8, 1998·FEMS Microbiology Reviews·M F Dunn
Apr 4, 2021·Polymers·Jonathan David HinchliffeIpsita Roy
Jan 1, 1997·Applied and Environmental Microbiology·P TavernierJ Barbotin
Jun 1, 1994·Microbiological Reviews·M W Breedveld, K J Miller
Aug 28, 2021·Life·Alexandra PeregrinaCecília M Arraiano

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