Journal of General Plant Pathology (2005) 71, 263-272
Masato Kawabe, Yumiko Kobayashi, Gen Okada, Isamu Yamaguchi, Tohru Teraoka and Tsutomu Arie (2005)
Three evolutionary lineages of tomato wilt pathogen, Fusarium oxysporum f. sp. lycopersici, based on sequences of IGS, MAT1, and pg1, are each composed of isolates of a single mating type and a single or closely related vegetative compatibility group
Journal of General Plant Pathology 71 (4), 263-272
Abstract: Three evolutionary lineages of the tomato wilt pathogen Fusarium oxysporum f. sp. lycopersici were found among a worldwide sample of isolates based on phylogenetic analysis of the ribosomal DNA intergenic spacer region. Each lineage consisted of isolates mainly belonging to a single or closely related vegetative compatibility group (VCG) and a single mating type (MAT). The first lineage (A1) was composed of isolates VCG 0031 and MAT1-1; the second (A2) included VCG 0030 and/or 0032 and MAT1-1; and the third (A3) included VCG 0033 and MAT1-2. Race 1 and race 2 isolates belonged to the A1 or A2 lineages, and race 3 belonged to A2 or A3 lineages, suggesting that there is no correlation between race and lineage. However, for the isolates from Japan, race 1 (with one exception), race 2, and race 3 isolates belonged to A2, A1, and A3 lineages, respectively. These results suggest that the races could have evolved independently in each lineage; and in Japan the present races were likely to have been introduced independently after they had evolved in other locations.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Tsutomu Arie, Tohru Teraoka, Masato Kawabe
Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
