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  • Title: Fusarium subglutinans f. sp. Pini represents a distinct mating population in the gibberella fujikuroi species complex.
    Author: Britz H, Coutinho TA, Wingfield MJ, Marasas WF, Gordon TR, Leslie JF.
    Journal: Appl Environ Microbiol; 1999 Mar; 65(3):1198-201. PubMed ID: 10049883.
    Abstract:
    Fusarium strains in the Gibberella fujikuroi species complex cause diseases on a variety of economically important plants. One of these diseases, pitch canker of Pinus spp., is caused by strains identified as Fusarium subglutinans f. sp. pini. Fertile crosses were detected between F. subglutinans f. sp. pini strains from South Africa, California, and Florida. F. subglutinans f. sp. pini strains were not cross-fertile with the standard tester strains of six of the seven other mating populations of G. fujikuroi. Sporadic perithecia with ascospores were obtained in two crosses with the mating population B tester strains. These perithecia were homothallic, and the ascospores derived from these perithecia were vegetatively compatible with the mating population B tester strain parent. We concluded that fertile F. subglutinans f. sp. pini isolates represent a new mating population (mating population H) of G. fujikuroi and that they belong to a unique biological species in a distinct taxon.
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