Genetic diversity of Australian isolates of Leptosphaeria maculans, the fungus that causes blackleg of canola ( Brassica napus )

Isolates of Leptosphaeria maculans , the fungus that causes blackleg of canola, were randomly sampled from seven sites in both eastern Australia and Western Australia. Amplified fragment length polymorphism and restriction fragment length polymorphism analyses showed a low degree of genetic differen...

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Bibliographic Details
Published in:Australasian plant pathology 2004-01, Vol.33 (4), p.529-536
Main Authors: Barrins, Joseph M, Ades, Peter K, Salisbury, Philip A, Howlett, Barbara J
Format: Article
Language:English
Subjects:
Age
Amplified fragment length polymorphism
Blackleg
Brassica napus
Differentiation
Genetic diversity
Leptosphaeria maculans
Mating types
Polymerase chain reaction
population genetics
Primers
Restriction fragment length polymorphism
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Summary:Isolates of Leptosphaeria maculans , the fungus that causes blackleg of canola, were randomly sampled from seven sites in both eastern Australia and Western Australia. Amplified fragment length polymorphism and restriction fragment length polymorphism analyses showed a low degree of genetic differentiation between isolates of L. maculans from these sites. There were small, weakly significant differences in genetic diversity of isolates when grouped according to the cultivar, age of the plants and the region from which the isolates were sampled. However, distinct populations were not observed. There was an even distribution of mating types, as shown by a PCR assay using idiomorph-specific primers.
ISSN:0815-3191
1448-6032
DOI:10.1071/AP04061