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Title: Analysis of the Phlebiopsis gigantea Genome, Transcriptome and Secretome Provides Insight into Its Pioneer Colonization Strategies of Wood

Source: PLOS Genet Volume 10, Number 12, December 2014; 20 p.

Author(s)Hori, Chiaki; Ishida, Takuya; Igarashi, Kiyohiko; Samejima, Masahiro; Suzuki, Hitoshi; Master, Emma; Ferreira, Patricia; Ruiz-Duenas, Francisco J.; Held, Benjamin; Canessa, Paulo; Larrondo, Luis F.; Schmoll, Monika; Druzhinina, Irina S.; Kubicek, Christian P.; Gaskell, Jill A.; Kersten, Phil; St. John, Franz; Glasner, Jeremy; Sabat, Grzegorz; Bondurant, Sandra Splinter; Syed, Khajamohiddin; Yadav, Jagjit; Mgbeahuruike, Anthony C.; Kovalchuk, Andriy; Asiegbu, Fred O.; Lackner, Gerald; Hoffmeister, Dirk; Recoret, Jorge; Gutierrez, Ana; Sun, Hui; Lindquist, Erika; Barry, Kerrie; Riley, Robert; Grigoriev, Igor V.; Henrissat, Bernard; Kues, Ursula; Berka, Randy M.; Martinez, Angel T.; Covert, Sarah F.; Blanchette, Robert A.; Cullen, Daniel

Publication Year: 2014  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4712-4B

Abstract: Collectively classified as white-rot fungi, certain basidiomycetes efficiently degrade the major structural polymers of wood cell walls. A small subset of these Agaricomycetes, exemplified by Phlebiopsis gigantea, is capable of colonizing freshly exposed conifer sapwood despite its high content of extractives, which retards the establishment of other fungal species. The mechanism(s) by which P. gigantea tolerates and metabolizes resinous compounds have not been explored. Here, we report the annotated P. gigantea genome and compare profiles of its transcriptome and secretome when cultured on freshcut versus solvent-extracted loblolly pine wood. The P. gigantea genome contains a conventional repertoire of hydrolase genes involved in cellulose/hemicellulose degradation, whose patterns of expression were relatively unperturbed by the absence of extractives. The expression of genes typically ascribed to lignin degradation was also largely unaffected. In contrast, genes likely involved in the transformation and detoxification of wood extractives were highly induced in its presence. Their products included an ABC transporter, lipases, cytochrome P450s, glutathione S-transferase and aldehyde dehydrogenase. Other regulated genes of unknown function and several constitutively expressed genes are also likely involved in P. gigantea’s extractives metabolism. These results contribute to our fundamental understanding of pioneer colonization of conifer wood and provide insight into the diverse chemistries employed by fungi in carbon cycling processes.

Keywords: White-rot; lignin; extractives; conifer; Phlebiopsis; Loblolly

Publication Review Process: Formally Refereed

File size: 2,492 kb(s)

Date posted: 12/22/2014

This publication is also viewable on Treesearch:  view
RITS Product ID: 71730
Current FPL Scientists associated with this product (listed alphabetically)
Cullen, Daniel
Research Microbiologist
Kersten, Philip J.
Research Microbiologist
St. Johns, Franz
Research Microbiologist

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