Pathogenicity, morphology and genetic variation of Phytophthara cactorum from strawberry, apple, rhododendron, and silver birch

Citation
J. Hantula et al., Pathogenicity, morphology and genetic variation of Phytophthara cactorum from strawberry, apple, rhododendron, and silver birch, MYCOL RES, 104, 2000, pp. 1062-1068
Citations number
28
Categorie Soggetti
Plant Sciences
Journal title
MYCOLOGICAL RESEARCH
ISSN journal
09537562 → ACNP
Volume
104
Year of publication
2000
Part
9
Pages
1062 - 1068
Database
ISI
SICI code
0953-7562(200009)104:<1062:PMAGVO>2.0.ZU;2-5
Abstract
The analysis of random amplified microsatellite (RAMS) markers of Phytophth ora cactorum from strawberry showed that leather rot of strawberry fruits a nd crown rot are not caused by genetically different strains of this specie s. UPGMA-analysis showed that the populations of P. cactorum on strawberry differ between North America and Europe and that no clear genetic separatio n between isolates from different plants can be made among these population s. Slight morphological variation exists in the diameters of oogonia and oo spores among the isolates but is insufficient for the identification of gen etic groups or host specificity of P, cactorum isolates. Pathogenicity expe riments proved that strains show a tendency towards host specialization.