Open AccessPseudomonas tolaasii : extra‐genomic factor mediates toxin production and efficiency
Author(s) -
Mamoun M,
Moquet F,
Laffitte J,
Olivier J.M
Publication year - 1997
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1997.tb10484.x
Subject(s) - agaricus bisporus , toxin , microbiology and biotechnology , biology , pseudomonas , strain (injury) , pseudomonadaceae , pseudomonadales , genetics , bacteria , mushroom , botany , anatomy
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 extra‐genomic factor mediates toxin production and efficiency.