Compatibility Among Host-Specialized Isolates ofHeterobasidion annosumfrom Western North America

摘要: Harrington, T. C., Worrall, J. J., and Rizzo, D. M. 1989. Compatibility among host-specialized isolates of Heterobasidion annosum from western North America. Phytopathology 79:290-296. Host-specialization another 18 trees stumps in Pacific Coast states also fell into the S California was previously demonstrated by inoculating Pinus ponderosa P groups based on compatibility; those diseased pine were Abies concolor (white fir) seedlings greenhouse. In present P-compatible other host genera S-compatible. study, these tested for sexual compatibility hetero- However, strains with karyon-homokaryon pairings six four tester H. testers not consistent genus, indicating that stump Europe representing two intersterility groups. colonization can be non-host specific. When American determined presence clamp connections paired themselves or heterokaryotic isolates, subcultures homokaryotic mycelia taken 5 wk after pairing, less evident than when European The nine specialized to fir compatible testers, used. Reports thus far suggest both S-compatible Pand are widespread America, but only testers. Some formed clamps a few group has been reported eastern Heterokaryotic (single-basidiospore)