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Phytopathogenic Fusarium oxysporum Schlecht, as a Necrotrophic Mycoparasite
Author(s) -
Vajna L.
Publication year - 1985
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1985.tb00629.x
Subject(s) - biology , fusarium oxysporum , hypha , rhizoctonia solani , botrytis cinerea , botany , parasitism , trichoderma harzianum , microbiology and biotechnology , botrytis , trichoderma , biological pest control , host (biology) , ecology
Fusarium oxysporum f. sp. dianthi , f. sp. lycopersici , f. sp. cepae , f. sp. niveum and one unidentified F. oxysporum isolate proved to be active necrotrophic mycoparasites. In dual cultures hyphae of Trichoderma hamatum, T. longibrachiatum, T. pseudokoningii, T. harzianum, Botrytis cinerea and Rhizoctonia solani were parasitized and destroyed by F. oxysporum. One isolate of Phytophthora sp. was not affected. Mutual parasitism between F. oxysporum and T. pseudokoningii and T. longibrachiatum has been observed, too. Details of parasitic hyphal interactions: hyphal coiling, penetration sites, resistance sheat formation, hyphal invasion and internal growing are described. The mycoparasitic feature as well as antimicrobial metabolic production of F. oxysporum is probably a common phenomenon to ensure this important plant pathogenic species to compete successfully against other soil‐borne fungal pathogens and saprophytes.