Global Patent Index - EP 1190062 A1

EP 1190062 A1 20020327 - AVIRULENT XANTHOMONAS-CAMPESTRIS STRAINS PRODUCING XANTHAN

Title (en)

AVIRULENT XANTHOMONAS-CAMPESTRIS STRAINS PRODUCING XANTHAN

Title (de)

XANTHANERZEUGENDE, AVIRULENTE XANTHOMONAS CAMPESTRIS STÄMME

Title (fr)

SOUCHES AVIRULENTES DE XANTHOMONAS CAMPESTRIS, PRODUISANT DU XANTHANE

Publication

EP 1190062 A1 20020327 (FR)

Application

EP 00951637 A 20000621

Priority

  • FR 0001725 W 20000621
  • FR 9907963 A 19990622

Abstract (en)

[origin: FR2795423A1] Xanthomonas campestris bacteria strains made non-virulent by inactivation of at least one virulence gene are new. Xanthomonas campestris bacterial strains are made non-virulent by inactivation of at least one virulent gene, and which retain the capacity to produce exo-polysaccharides (preferably xanthan gum), are new. Independent claims are also included for (1) a plasmid, pRPA-BCAT 140, used to produce the strain; (2) a process of preparation of strain as claimed, comprising combination of homologue with plasmid comprising total or partial deletion of hrp or hrc genes; (3) a process of preparation of bacterial exo-polysaccharide, especially xanthan gum, comprising cultivation of Xanthomonas strain, especially Xanthomonas campestris as claimed, under conditions permitting formation of exo-polysaccharide in fermentation medium; and (4) nucleic acids comprising nucleotide sequences of 1189, 1818 and 702 bp as given in the specification.

IPC 1-7

C12N 15/31; C07K 14/21; C12N 1/21; C12P 19/06

IPC 8 full level

C12N 15/09 (2006.01); C07K 14/195 (2006.01); C12N 1/21 (2006.01); C12N 15/31 (2006.01); C12P 19/06 (2006.01); C12R 1/64 (2006.01)

CPC (source: EP)

C07K 14/195 (2013.01); C12N 1/205 (2021.05); C12P 19/06 (2013.01); C12R 2001/64 (2021.05)

Citation (search report)

See references of WO 0078967A1

Designated contracting state (EPC)

AT FR GB

DOCDB simple family (publication)

FR 2795423 A1 20001229; FR 2795423 B1 20030425; AU 6451200 A 20010109; BR 0011889 A 20020305; CA 2375791 A1 20001228; CN 1357043 A 20020703; EP 1190062 A1 20020327; JP 2003503025 A 20030128; WO 0078967 A1 20001228

DOCDB simple family (application)

FR 9907963 A 19990622; AU 6451200 A 20000621; BR 0011889 A 20000621; CA 2375791 A 20000621; CN 00809327 A 20000621; EP 00951637 A 20000621; FR 0001725 W 20000621; JP 2001505709 A 20000621