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Inhibition of Septoria tritici and other phytopathogenic fungi and bacteria by Pseudomonas fluorescens and its antibiotics
Author(s) -
LEVY E.,
GOUGH F. J.,
BERLIN K. D.,
GUIANA P. W.,
SMITH J. T.
Publication year - 1992
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1992.tb02355.x
Subject(s) - pseudomonas fluorescens , biology , septoria , microbiology and biotechnology , bacteria , pseudomonadaceae , pseudomonadales , pseudomonas , strain (injury) , antibiotics , botany , genetics , anatomy
Pseudomonas fluorescens strain PFM2, antagonistic to Septoria tritici , also inhibited growth of several other phytopathogenic bacteria and fungi in vitro. Three inhibitory compounds were extracted from liquid glycerol‐peptone‐phosphate medium in which strain PFM2 was grown for 4 weeks. The compound recovered in greatest quantity (70 mg/1) was identified as 2,4‐diacetylphloroglucinol. The other two antibiotics, which were produced in small amounts (< 5 mg/l), were not identified. A similar pattern of inhibition against the different bacteria and fungi was exhibited by both 2,4‐diacetylphloroglucinol and strain PFM2 when grown in a medium of the same composition as that in which the antibiotic was produced.