Asexual fungus Verticillium dahliae is potentially heterothallic

Fungal Diseases


Verticillium dahliae, a soilborne plant pathogen, causes wilt disease in many important crops. We reported previously that the mating type gene MAT1-2-1 is spread to isolates of this asexual fungus. However, we did not determine whether V. dahliae is homothallic or heterothallic because the opposite mating type gene, MAT1-1-1, had not been identified. In the present study, we identified the MAT1-1-1 gene from an isolate lacking MAT1-2-1 and the mating type idiomorphs of V. dahliae. Each isolate we tested contained either the MAT1-1 or MAT1-2 idiomorph, indicating that the asexual fungus V. dahliae is potentially heterothallic.


Verticillium dahliae Alpha box Mating type idiomorph MAT1-1 MAT1-2 Heterothallism 


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Copyright information

© The Phytopathological Society of Japan and Springer 2009

Authors and Affiliations

  • Toshiyuki Usami
    • 1
  • Mizuho Itoh
    • 1
  • Yoshimiki Amemiya
    • 1
  1. 1.Graduate School of HorticultureChiba UniversityMatsudoJapan

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