• 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.

Insight intotrade-off between wood decay and parasitism: Insights from the genome of a fungal forest pathogen

GONTHIER, Paolo;
2012-01-01

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.
2012
Inglese
Sì, ma tipo non specificato
194
1001
1013
13
http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2012.04128.x/full
genome; Heterobasidion; parasitism; pathology; saprotrophy; trade-off; wood decay
FRANCIA
GERMANIA
REGNO UNITO DI GRAN BRETAGNA
STATI UNITI D'AMERICA
BELGIO
COREA DEL SUD
FINLANDIA
NORVEGIA
PAESI BASSI
SVEZIA
SVIZZERA
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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.; D...espandi
info:eu-repo/semantics/article
partially_open
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/109410
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