Effect of the concentration of sodium chloride in the medium on the relative proportions of poly- and oligo-saccharides excreted by Rhizobium meliloti strain YE-2SL.
Rhizobium meliloti mutant strains have been found which, in the presence of low concentrations of NaCl, produce a galactoglucan instead of the usual succinoglycan. When grown in a mannitol-glutamic acid-salts medium, the principal products secreted by R. meliloti YE-2S1 were comparable quantities of succinoglycan repeating-units and galactoglucan. As NaCl was added progressively to the culture medium, the repeating units nearly completely disappeared and the galactoglucan was gradually replaced by a succinoglycan.
Zevenhuizen
L P
LP
Department of Microbiology, Agricultural University, Wageningen, The Netherlands.
Faleschini
P
P
D002240:Carbohydrate Sequence; D003470:Culture Media; D008969:Molecular Sequence Data; D009844:Oligosaccharides / Q000096:biosynthesis* / Q000737:chemistry; D011135:Polysaccharides, Bacterial / Q000096:biosynthesis* / Q000737:chemistry; D012231:Rhizobium / Q000378:metabolism*; D012965:Sodium Chloride
D003470:Culture Media; D009844:Oligosaccharides; D011135:Polysaccharides, Bacterial; D012965:Sodium Chloride