Open AccessInteractions between Pseudomonas fluorescens biocontrol agents and Glomus mosseae , an arbuscular mycorrhizal fungus, within the rhizosphere
Author(s) -
Edwards Simon G.,
Young J. Peter W.,
Fitter Alastair H.
Publication year - 1998
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.1574-6968.1998.tb13904.x
Subject(s) - glomus , pseudomonas fluorescens , biology , rhizosphere , colonisation , shoot , fungus , acaulospora , phycomycetes , botany , population , mycorrhiza , horticulture , inoculation , colonization , symbiosis , spore , arbuscular mycorrhizal , bacteria , microbiology and biotechnology , genetics , demography , sociology
Interactions between Pseudomonas fluorescens biocontrol agents and Glomus mosseae , an arbuscular mycorrhizal fungus, were studied. The biocontrol agents included the genetically modified strains CHA96 and CHA0 pME3424 which produced enhanced levels of antifungal compounds. Tomato ( Lycopersicum esculentum ) and leek ( Allium porrum ) host plants were grown in sterile Terra‐Green (calcined attapulgite clay) with limited nutrients. Mycorrhizal activity was indicated by shoot dry weight and phosphorus content. In all experiments, plants grown in the presence of G. mosseae had a significantly higher shoot dry weight than those grown in the absence of G. mosseae . Colonisation and activity of G. mosseae was unaltered in the presence of P. fluorescens isolates and presence of G. mosseae increased the population of P. fluorescens in the rhizosphere.