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The Possible Role of Competition between<i>Trichoderma harzianum</i>and<i>Fusarium oxysporum</i>on Rhizosphere Colonization
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1989
Year
EngineeringPlant PathologyFungal DiversityMicrobial EcologyChlamydospore Germination RateFungal BiologyMycelial InteractionRhizosphereFungal PhysiologyFusarium Oxysporum F.spFungal SymbiosisFungal PathogenBiologyRhizosphere ColonizationSoil SuppressivenessCrop ProtectionMaximal GerminationMicrobiologySymbiosisHost ResistanceMedicine
Soil was enriched with chlamydospores of Fusarium oxysporum f.sp. asinfectum and F. oxysporum f. sp. melonis and amended with increasing concentrations of glucose and asparagine. Maximal germination of chlamydospores was obtained in soil amended with 0.4 mg of glucose and 0.8 mg of asparagine per gram of soil. Addition of conidia of the biocontrol agent Trichoderma harzianum (T-35) significantly (P=0.05) reduced the chlamydospore germination rate of both Fusaria. (...)