Growth-Related Substituent Changes in Exopolysaccharides of Fast-Growing Rhizobia
AUTOR(ES)
Cadmus, Martin C.
RESUMO
Pyruvic acid and O-acetyl groups are the major noncarbohydrate substituents in exopolysaccharides (EPS) produced by fast-growing species of Rhizobium. EPS substituent variations were observed among strains of the same species. The amounts of these substituents also varied with culture age; pyruvic acid increased in the EPS of all four species, whereas O-acetyl increased in Rhizobium trifolii and R. leguminosarum EPS, decreased in R. meliloti EPS, and remained constant in R. phaseoli EPS. The use of glycerol as a substrate for R. meliloti significantly increased EPS yields, whereas mannitol increased those of the other three Rhizobium species.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=241996Documentos Relacionados
- Kinetics of Denitrifying Growth by Fast-Growing Cowpea Rhizobia
- Possible Involvement of a Megaplasmid in Nodulation of Soybeans by Fast-Growing Rhizobia from China
- Efficient homologous recombination in fast-growing and slow-growing mycobacteria.
- Recognition of individual strains of fast-growing rhizobia by using profiles of membrane proteins and lipopolysaccharides.
- Large plasmids of fast-growing rhizobia: homology studies and location of structural nitrogen fixation (nif) genes.