Pseudomonas tolaasii: extra-genomic factor mediates toxin production and efficiency.
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.
Mamoun
M
M
INRA, Station de Recherches sur les Champignons, Villenave d'Ornon, France. marnoun@bordeaux.inra.fr
Moquet
F
F
Laffitte
J
J
Olivier
J M
JM
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
D001426:Bacterial Proteins; D001427:Bacterial Toxins; C095143:PheN protein, Pseudomonas tolaasii; D014157:Transcription Factors