title: The rhizosphere microbial community in a multiple parallel mineralization system suppresses the pathogenic fungus Fusarium oxysporum.
abstract: The rhizosphere microbial community in a hydroponics system with multiple parallel mineralization (MPM) can potentially suppress root-borne diseases. This study focused on revealing the biological nature of the suppression against Fusarium wilt disease, which is caused by the fungus Fusarium oxysporum, and describing the factors that may influence the fungal pathogen in the MPM system. We demonstrated that the rhizosphere microbiota that developed in the MPM system could suppress Fusarium wilt disease under in vitro and greenhouse conditions. The microbiological characteristics of the MPM system were able to control the population dynamics of F. oxysporum, but did not eradicate the fungal pathogen. The roles of the microbiological agents underlying the disease suppression and the magnitude of the disease suppression in the MPM system appear to depend on the microbial density. F. oxysporum that survived in the MPM system formed chlamydospores when exposed to the rhizosphere microbiota. These results suggest that the microbiota suppresses proliferation of F. oxysporum by controlling the pathogen's morphogenesis and by developing an ecosystem that permits coexistence with F. oxysporum.
authors: National Institute of Vegetable and Tea Science, National Agriculture and food Research Organization, Tsu, Mie, 514-2392, Japan; Graduate School of Environmental Studies, Nagoya University, Chikusa, Nagoya, Aichi, 464-8601, Japan.
authors: Kazuki
authors: K
authors: Fujiwara
authors: Yuichiro
authors: Y
authors: Iida
authors: Takashi
authors: T
authors: Iwai
authors: Chihiro
authors: C
authors: Aoyama
authors: Ryuya
authors: R
authors: Inukai
authors: Akinori
authors: A
authors: Ando
authors: Jun
authors: J
authors: Ogawa
authors: Jun
authors: J
authors: Ohnishi
authors: Fumihiro
authors: F
authors: Terami
authors: Masao
authors: M
authors: Takano
authors: Makoto
authors: M
authors: Shinohara
mesh_terms: D018407:Bacterial Physiological Phenomena; D058448:Biota; D005670:Fusarium / Q000254:growth & development*; D018551:Solanum lycopersicum / Q000382:microbiology; D056265:Microbial Interactions; D008969:Molecular Sequence Data; D010935:Plant Diseases / Q000382:microbiology / Q000517:prevention & control*; D058441:Rhizosphere; D017422:Sequence Analysis, DNA; D012988:Soil Microbiology
keywords: Fusarium oxysporum; multiple parallel mineralization; rhizosphere biofilm; soil-borne disease suppression.