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Comparative Study
. 1993 May-Jun;23(5-6):490-5.
doi: 10.1007/BF00312640.

Comparison of the 5.8s rDNA and internal transcribed spacer sequences of isolates of Leptosphaeria maculans from different pathogenicity groups

V M Morales  1 , L E Pelcher, J L Taylor
Affiliations
Comparative Study

Comparison of the 5.8s rDNA and internal transcribed spacer sequences of isolates of Leptosphaeria maculans from different pathogenicity groups

V M Morales et al. Curr Genet. 1993 May-Jun.

Abstract

The regions coding for the 5.8s rRNA and the flanking internal transcribed spacers (ITS1 and ITS2) from nine isolates of the blackleg pathogen Leptosphaeria maculans and one isolate of Sclerotinia sclerotiorum were amplified by the polymerase chain reaction and sequenced. Five of the L. maculans isolates were highly virulent to Brassica plants, two were weakly virulent and two were isolated from the cruciferous weed Thlaspi arvense. The 5.8s DNA sequences of all L. maculans isolates were identical. However, there were major differences in both ITS1 and ITS2 sequences that correlated with the pathogenicity grouping. Phylogenetic analysis of the ITS sequences by both parsimony and maximum-likelihood methods indicated that each pathogenicity group was statistically different from each other with the weakly-virulent isolates being more closely related to the Thlaspi than to the highly-virulent isolates. The relationships of L. maculans to other fungi, based on a comparison of the 5.8s rDNA sequences, are discussed.

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References

    1. Nucleic Acids Res. 1987 Nov 25;15(22):9599 - PubMed
    1. Appl Environ Microbiol. 1992 Jan;58(1):291-5 - PubMed
    1. EMBO J. 1990 Dec;9(12):3989-96 - PubMed
    1. J Mol Biol. 1990 Feb 20;211(4):699-712 - PubMed
    1. Q Rev Biol. 1991 Dec;66(4):411-53 - PubMed

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