Rifampicin resistant xanthan hyperproducing Xanthomonas campestr

Details Rifampicin resistant xanthan hyperproducing Xanthomonas campestr Rifampicin resistant xanthan hyperproducing Xanthomonas campestr

1992-11-05

1994-05-10

Schwartz, Richard A.

Chemistry: molecular biology and microbiology

Micro-organism, per se ; compositions thereof; proces of...

Bacteria or actinomycetales; media therefor

435104, C12N 120

Patent

active

053106776

ABSTRACT:
A method of increasing xanthan gum production, comprising culturing a Xanthomonas campestris strain having a xanthan-increasing modification in a culture medium, wherein the modification is selected from the group consisting of (1) a mutation causing rifampicin-resistance; (2) a mutation causing bacitracin-resistance; or (3) exogenous genetic information controlling the synthesis of xanthan; and separating xanthan from the culture medium, is provided along with specific DNA sequences and Xanthomonas campestris strains showing increased xanthan gum production.

REFERENCES:
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Borthakur et al, "A Mutation that Blocks Exopolysaccharide Synthesis Prevents Nodulation of Peas by Rhizobium leguminosarum But Not of Beans by R. phaseoli and is corrected by Cloned DNA from Rhizobium or Phytopathogen Xanthamonas" Mol. Gen. Genet. (1986) 203: 320-323.
Rogovin et al, "Production of Polysaccharide with Xanthamonas campestris in J. Biochem. Microbiol. Technol. Eng." (1961) 3: 51-63.
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