The acetyl substituent of succinoglycan is not necessary for alfalfa nodule invasion by Rhizobium meliloti Rm1021.
Rhizobium meliloti Rm1021 requires a Calcofluor-binding exopolysaccharide, termed succinoglycan or EPS I, to invade alfalfa nodules. We have determined that a strain carrying a mutation in the exoZ locus produces succinoglycan that lacks the acetyl substituent. The exoZ mutant nodules alfalfa normally.
Reuber
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TL
Department of Biology, Massachusetts Institute of Technology, Cambridge 02139.
Walker
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GC
D000107:Acetylation; D001426:Bacterial Proteins / Q000235:genetics; D000455:Medicago sativa / Q000382:microbiology*; D011135:Polysaccharides, Bacterial / Q000737:chemistry*; D016962:Sinorhizobium meliloti / Q000737:chemistry / Q000472:pathogenicity*; D013559:Symbiosis / Q000502:physiology; D014774:Virulence
D001426:Bacterial Proteins; D011135:Polysaccharides, Bacterial; C072910:exoZ protein, Rhizobium meliloti; C056779:succinoglycan