Transposable element-assisted evolution and adaptation to host plant within the Leptosphaeria maculans-Leptosphaeria biglobosa species complex of fungal pathogens
- Grandaubert, J
- Lowe, RGT
- Soyer, JL
- Schoch, CL
- de Wouw, APV
- Fudal, I
- Robbertse, B
- Lapalu, N
- Links, MG
- Ollivier, B
- Linglin, J
- Barbe, V
- Mangenot, S
- Cruaud, C
- Borhan, H
- Howlett, BJ
- Balesdent, M-H
- Rouxel, T
DOIAbstract
BACKGROUND: Many plant-pathogenic fungi have a tendency towards genome size expansion, mostly driven by increasing content of transposable elements (TEs). Through comparative and evolutionary genomics, five members of the Leptosphaeria maculans-Leptosphaeria biglobosa species complex (class Dothideomycetes, order Pleosporales), having different host ranges and pathogenic abilities towards cruciferous plants, were studied to infer the role of TEs on genome shaping, speciation, and on the rise of better adapted pathogens. RESULTS: L. maculans 'brassicae', the most damaging species on oilseed rape, is the only member of the species complex to have a TE-invaded genome (32.5%) compared to the other members genomes (<4%). These TEs had an impact ...
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