Molecular Biology and Evolution, Vol 14, 1177-1185, Copyright © 1997 by Society for Molecular Biology and Evolution
T Giraud, D Fortini, C Levis, P Leroux and Y Brygoo
Molecular markers revealed that Botryotinia fuckeliana (the teleomorph of
Botrytis cinerea), a haploid, filamentous, heterothallic ascomycete,
contained a large amount of intrapopulation genetic variation. The markers
were used to determine the mode of reproduction and the population
structure of this fungus. We did not detect any differentiation between
isolates from different organs, collection dates, varieties of grape, or
locations in the Champagne region of France, but two unexpected sympatric
populations were identified. One group of isolates (transposa) contained
the transposable elements Boty and Flipper; the other (vacuma) did not.
These groups differed from one another for all the other markers. RFLP
markers showed that there was genetic recombination in both groups of
isolates. We conclude that there are two sympatric populations of B.
fuckeliana in Champagne. One species (transposa) seems to be local and well
adapted, while the other one (vacuma) is presumably a heterogeneous migrant
population.
ORIGINAL ARTICLE
RFLP markers show genetic recombination in Botryotinia fuckeliana (Botrytis cinerea) and transposable elements reveal two sympatric species
Institut National de la Recherche Agronomique, Versailles, France. giraud@versailles.inra.fr
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