Insight intotrade-off between wood decay and parasitism: Insights from the genome of a fungal forest pathogen
Articolo
Data di Pubblicazione:
2012
Abstract:
• Parasitism and saprotrophic wood decay are two fungal strategies fundamental for succession
and nutrient cycling in forest ecosystems. An opportunity to assess the trade-off between
these strategies is provided by the forest pathogen and wood decayer Heterobasidion
annosum sensu lato.
• We report the annotated genome sequence and transcript profiling, as well as the quantitative
trait loci mapping, of one member of the species complex: H. irregulare. Quantitative
trait loci critical for pathogenicity, and rich in transposable elements, orphan and secreted
genes, were identified.
• A wide range of cellulose-degrading enzymes are expressed during wood decay. By contrast,
pathogenic interaction between H. irregulare and pine engages fewer carbohydrate-active
enzymes, but involves an increase in pectinolytic enzymes, transcription modules for oxidative
stress and secondary metabolite production.
• Our results show a trade-off in terms of constrained carbohydrate decomposition and
membrane transport capacity during interaction with living hosts. Our findings establish that
saprotrophic wood decay and necrotrophic parasitism involve two distinct, yet overlapping,
processes.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
genome; Heterobasidion; parasitism; pathology; saprotrophy; trade-off; wood decay
Elenco autori:
OLSON Å.; AERTS A.; ASIEGBU F.; BELBAHRI L.; BOUZID O.; BROBERG A.; CANBÄCK B.; COUTINHO P.M.; CULLEN D.; DALMAN K.; DEFLORIO G.; VAN DIEPEN L.T.A.; DUNAND C.; DUPLESSIS S.; DURLING M.; GONTHIER P.; GRIMWOOD J.; FOSSDAL C.G.; HANSSON D.; HENRISSAT B.; HIETALA A.; HIMMELSTRAND K.; HOFFMEISTER D.; HÖGBERG N.; JAMES T.Y.; KARLSSON M.; LIND M.; KOHLER A.; KÜES U.; LEE Y.-H.; LIN Y.-C.; LINDQUIST E.; LOMBARD V.; LUCAS S.; LUNDÉN K.; MORIN E.; MURAT C.; PARK J.; RAFFAELLO T.; ROUZÉ P.; SALAMOV A.; SCHMUTZ J.; SOLHEIM H.; STÅHLBERG J.; VÉLËZ H.; DE VRIES R.P.; WIEBENGA A.; WOODWARD S.; YAKOVLEV I.; GARBELOTTO M.; MARTIN F.; GRIGORIEV I.V.; STENLID J.
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