title: Interactions of Fusarium species during prepenetration development.
abstract: Interspecies interactions between Fusarium avenaceum, Fusarium culmorum, Fusarium graminearum, Fusarium poae, and Fusarium tricinctum were studied during early growth stages of isolates on model surfaces. Additionally, germination and germ tube growth of the pathogens were studied on attached and detached wheat leaves at 10 °C and 22 °C. Two-species interactions between Fusarium isolates during germination and germ tube growth were assessed after 8 hours of incubation. All species except F. tricinctum germinated and grew faster at higher than lower temperature. All species were able to germinate with more than one germ tube per conidium cell; and germination and germ tube growth were faster on leaves than on glass surface. Interactions among Fusarium species during germination and germ tube growth were predominantly competitive with macroconidia-producing species being more competitive. It is concluded that the type of conidia as well as environmental factors influence the competitiveness of Fusarium species during early stages of growth.
authors: Institute of Crop Science and Resource Conservation, Division Phytomedicine, University of Bonn, Nussallee 9, 53115 Bonn, Germany. maina.wagacha@uonbi.ac.ke
authors: John Maina
authors: JM
authors: Wagacha
authors: Erich-Christian
authors: EC
authors: Oerke
authors: Heinz-Wilhelm
authors: HW
authors: Dehne
authors: Ulrike
authors: U
authors: Steiner
mesh_terms: D005670:Fusarium / Q000254:growth & development* / Q000472:pathogenicity; D056265:Microbial Interactions; D010935:Plant Diseases / Q000382:microbiology; D018515:Plant Leaves / Q000382:microbiology; D013172:Spores, Fungal / Q000254:growth & development; D013696:Temperature; D013997:Time Factors; D014908:Triticum / Q000382:microbiology