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Transcriptomic responses of Phanerochaete chrysosporium to oak acetonic extracts: focus on a new glutathione transferase.

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Issue date
2014
Author
Thuillier, Anne
Chibani, Kamel
Bellí i Martínez, Gemma
Herrero Perpiñán, Enrique
Dumarçay, Stéphane
Gérardin, Philippe
Kohler, Annegret
Deroy, Aurélie
Dhalleine, Tiphaine
Bchini, Raphael
Jacquot, Jean Pierre
Gelhaye, Eric
Morel-Rouhier, Mélanie
Suggested citation
Thuillier, Anne; Chibani, Kamel; Bellí i Martínez, Gemma; Herrero Perpiñán, Enrique; Dumarçay, Stéphane; Gérardin, Philippe; ... Morel-Rouhier, Mélanie. (2014) . Transcriptomic responses of Phanerochaete chrysosporium to oak acetonic extracts: focus on a new glutathione transferase.. Applied and Environmental Microbiology, 2014, vol. 80, núm. 20, p. 6316-6327. https://doi.org/10.1128/AEM.02103-14.
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Abstract
The first steps of wood degradation by fungi lead to the release of toxic compounds known as extractives. To better understand how lignolytic fungi cope with the toxicity of these molecules, a transcriptomic analysis of Phanerochaete chrysosporium genes was performed in presence of oak acetonic extracts. It reveals that in complement to the extracellular machinery of degradation, intracellular antioxidant and detoxification systems contribute to the lignolytic capabilities of fungi presumably by preventing cellular damages and maintaining fungal health. Focusing on these systems, a glutathione transferase (PcGTT2.1) has been selected for functional characterization. This enzyme, not characterized so far in basidiomycetes, has been first classified as a GTT2 in comparison to the Saccharomyces cerevisiae isoform. However, a deeper analysis shows that GTT2.1 isoform has functionally evolved to reduce lipid peroxidation by recognizing high-molecular weight peroxides as substrates. Moreover, the GTT2.1 gene has been lost in some non-wood decay fungi. This example suggests that the intracellular detoxification system could have evolved concomitantly with the extracellular ligninolytic machinery in relation to the capacity of fungi to degrade wood.
URI
http://hdl.handle.net/10459.1/48422
DOI
https://doi.org/10.1128/AEM.02103-14
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Applied and Environmental Microbiology, 2014, vol. 80, núm. 20, p. 6316-6327
European research projects
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  • Articles publicats (IRBLleida) [1167]
  • Articles publicats (Grup de Recerca en Estrès Cel·lular i Supervivència en Models Eucariotes) [51]

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