Abstract 3283 from Intl. Bot. Congress 1999

ibclogo XVI International Botanical Congess

Abstract Number: 3283
Session = 19.4.3

VIRUS GENEALOGY AND GENE FLOW WITHIN AND BETWEEN FUNGAL POPULATIONS

M. G. Milgroom, Y.-C. Liu, B. I. Hillman‡ and P. Cortesi†, *Cornell University, Ithaca, NY, USA, ‡Rutgers University, New Brunswick, NJ, USA, †Università degli Studi di Milano, Milan, Italy

Viruses have some potential for regulating fungal populations. However, virus transmission between individuals can be restricted in the laboratory by vegetative incompatibility. Our objective was to test whether vegetative incompatibility is a significant barrier to virus gene flow in natural populations of the chestnut blight fungus, Cryphonectria parasitica. We sampled virus isolates from different vegetative compatibility (vc) types from two populations of C. parasitica. Sequence variation appeared random with respect to vc types, indicating that viruses may spread regardless of vegetative incompatibility in the host population. Furthermore, we found no evidence for restricted gene flow between the two populations.

HTML-Version made 7. July 1999 by Kurt Stüber

VIRUS GENEALOGY AND GENE FLOW WITHIN AND BETWEEN FUNGAL POPULATIONS

M. G. Milgroom*, Y.-C. Liu*, B. I. Hillman‡ and P. Cortesi†, *Cornell University, Ithaca, NY, USA, ‡Rutgers University, New Brunswick, NJ, USA, †Università degli Studi di Milano, Milan, Italy

M. G. Milgroom, Y.-C. Liu, B. I. Hillman‡ and P. Cortesi†, *Cornell University, Ithaca, NY, USA, ‡Rutgers University, New Brunswick, NJ, USA, †Università degli Studi di Milano, Milan, Italy