Article
Specific oligosaccharide form of the Rhizobium meliloti exopolysaccharide promotes nodule invasion in alfalfa.
Proceedings of the National Academy of Sciences of the United States of America - 15 Jun 1992
Battisti L, Lara J C, Leigh J A
Abstract excerpt
Rhizobium meliloti strain SU47 produces both high molecular weight (HMW) and low molecular weight (LMW) forms of an acidic exopolysaccharide, succinoglycan. Genetic studies have shown that succinoglycan is required for alfalfa root nodule invasion. We found that LMW succinoglycan, when applied exogenously to alfalfa roots, restored nodule invasion to exoA, exoB, exoF, and exoH mutants. Nodule initiation signals...
Topics
- Chromatography, Ion Exchange
- Genes, Bacterial
- Medicago sativa
- Molecular Weight
- Mutation
- Oligosaccharides
- Polysaccharides, Bacterial
- Sinorhizobium meliloti