title: Effects of the antimycotic molecule Iturin A2, secreted by Bacillus subtilis strain M51, on arbuscular mycorrhizal fungi.
abstract: A new system, devised for the study of early stages of arbuscular mycorrhizal infection, was used to test the effect of the biological control agent Iturin A2, secreted by the strain M51 of Bacillus subtilis, on the development of arbuscular mycorrhizal fungi. The saprophytic growth of the fungus Glomus mosseae was inhibited by Iturin A2 concentrations higher than 100 micrograms/g of sand; whereas, in the presence of the tomato host plant, both, pre-infection events and intraradical growth were not negatively influenced by the antifungal compound; furthermore, the development of arbuscular mycorrhizal symbiosis was not impeded by the biocontrol agent in field conditions, while Fusarium oxysporum f. sp. lycopersici infection was hindered.
authors.affiliation: Scuola Superiore di Studi Universitari e Perfezionamento S. Anna, Pisa, Italy.
authors.forename: A S
authors.initials: AS
authors.lastname: Citernesi
authors.forename: C
authors.initials: C
authors.lastname: Filippi
authors.forename: G
authors.initials: G
authors.lastname: Bagnoli
authors.forename: M
authors.initials: M
authors.lastname: Giovannetti
mesh_terms: D000900:Anti-Bacterial Agents / Q000302:isolation & purification / Q000494:pharmacology*; D000935:Antifungal Agents / Q000302:isolation & purification / Q000494:pharmacology*; D001412:Bacillus subtilis / Q000737:chemistry*; D005658:Fungi / Q000187:drug effects*; D005670:Fusarium / Q000187:drug effects; D018551:Solanum lycopersicum / Q000382:microbiology; D010455:Peptides; D010456:Peptides, Cyclic; D018517:Plant Roots / Q000382:microbiology; D018547:Plant Stems / Q000382:microbiology; D013559:Symbiosis / Q000187:drug effects
chemical_list: D000900:Anti-Bacterial Agents; D000935:Antifungal Agents; D010455:Peptides; D010456:Peptides, Cyclic; C013579:iturin A