Phylogenetic analysis of Plenodomus lingam and Plenodomus biglobosus isolates in Hungary
Journal of Plant Diseases and Protection(2023)
摘要
Blackleg (stem canker) of crucifers is a globally important disease caused by multiple genetic subclades of the fungi Plenodomus lingam (syn.: Leptosphaeria maculans ) and Plenodomus biglobosus (syn.: Leptosphaeria biglobosa ). In our study, we monitored the geographical distribution of these two pathogen species from rapeseed growing areas in Hungary. Multiplex PCR identified 48.7% of the isolates as Plenodomus biglobosus , which indicates the non-recent introduction of the pathogen into Hungary. In addition, multi-locus analysis revealed low genetic diversity within the species, as all isolates were clustered to the Plenodomus lingam ‘brassicae’ and Plenodomus biglobosus ‘brassicae’ subclades. The low genetic diversity of a population generally means reduced adaptation potential, which is essential information in breeding and in developing more effective management strategies.
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关键词
Plenodomus
lingam
,
Plenodomus biglobosus
,
Brassica
napus
,
tub2
, ITS rDNA, LSU,
rpb2
, Molecular phylogeny
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