title: Pseudomonas tolaasii: extra-genomic factor mediates toxin production and efficiency.
abstract: Pseudomonas tolaasii is responsible for brown blotch symptoms on Agaricus bisporus. Investigations among 15 P. tolaasii wild-type strains revealed the existence of an extra-genomic factor. Pseudomonas tolaasii CNBP2152D, a spontaneous derivative of the wild-type strain CNBP2152 which has lost the factor, exhibited a significant decline in pathogenicity. Comparison of blotch symptoms induced by toxins extracted from CNBP2152 and CNBP2152D showed that the extragenomic factor mediates toxin production and efficiency.
authors.affiliation: INRA, Station de Recherches sur les Champignons, Villenave d'Ornon, France. marnoun@bordeaux.inra.fr
authors.forename: M
authors.initials: M
authors.lastname: Mamoun
authors.forename: F
authors.initials: F
authors.lastname: Moquet
authors.forename: J
authors.initials: J
authors.lastname: Laffitte
authors.forename: J M
authors.initials: JM
authors.lastname: Olivier
mesh_terms: D001426:Bacterial Proteins; D001427:Bacterial Toxins / Q000096:biosynthesis / Q000633:toxicity*; D001487:Basidiomycota; D010957:Plasmids / Q000032:analysis*; D011549:Pseudomonas / Q000737:chemistry* / Q000472:pathogenicity*; D014157:Transcription Factors / Q000235:genetics
chemical_list: D001426:Bacterial Proteins; D001427:Bacterial Toxins; C095143:PheN protein, Pseudomonas tolaasii; D014157:Transcription Factors