Comparative genomics of Ceriporiopsis subvermispora and Phanerochaete chrysosporium provide insight into selective ligninolysis.

TitleComparative genomics of Ceriporiopsis subvermispora and Phanerochaete chrysosporium provide insight into selective ligninolysis.
Publication TypeJournal Article
Year of Publication2012
AuthorsFernandez-Fueyo, E, Ruiz-Duenas, FJ, Ferreira, P, Floudas, D, Hibbett, DS, Canessa, P, Larrondo, LF, James, TY, Seelenfreund, D, Lobos, S, Polanco, R, Tello, M, Honda, Y, Watanabe, T, Watanabe, T, San Ryu, J, San, RJae, Kubicek, CP, Schmoll, M, Gaskell, J, Hammel, KE, St John, FJ, Wymelenberg, AVanden, Sabat, G, BonDurant, SSplinter, Syed, K, Yadav, JS, Doddapaneni, HV, Subramanian, V, Lavín, JL, Oguiza, JA, Perez, G, Pisabarro, AG, Ramirez, L, Santoyo, F, Master, E, Coutinho, PM, Henrissat, B, Lombard, V, Magnuson, JKarl, Kües, U, Hori, C, Igarashi, K, Samejima, M, Held, BW, Barry, KW, LaButti, KM, Lapidus, A, Lindquist, EA, Lucas, SM, Riley, R, Salamov, AA, Hoffmeister, D, Schwenk, D, Hadar, Y, Yarden, O, de Vries, RP, Wiebenga, A, Stenlid, J, Eastwood, D, Grigoriev, IV, Berka, RM, Blanchette, RA, Kersten, P, Martinez, AT, Vicuna, R, Cullen, D
JournalProc Natl Acad Sci U S A
Volume109
Issue14
Pagination5458-63
Date Published2012 Apr 03
ISSN1091-6490
KeywordsBasidiomycota, Genomics, Hydrolysis, Lignin, Molecular Sequence Data, Oxidation-Reduction, Phylogeny, Species Specificity
Abstract

Efficient lignin depolymerization is unique to the wood decay basidiomycetes, collectively referred to as white rot fungi. Phanerochaete chrysosporium simultaneously degrades lignin and cellulose, whereas the closely related species, Ceriporiopsis subvermispora, also depolymerizes lignin but may do so with relatively little cellulose degradation. To investigate the basis for selective ligninolysis, we conducted comparative genome analysis of C. subvermispora and P. chrysosporium. Genes encoding manganese peroxidase numbered 13 and five in C. subvermispora and P. chrysosporium, respectively. In addition, the C. subvermispora genome contains at least seven genes predicted to encode laccases, whereas the P. chrysosporium genome contains none. We also observed expansion of the number of C. subvermispora desaturase-encoding genes putatively involved in lipid metabolism. Microarray-based transcriptome analysis showed substantial up-regulation of several desaturase and MnP genes in wood-containing medium. MS identified MnP proteins in C. subvermispora culture filtrates, but none in P. chrysosporium cultures. These results support the importance of MnP and a lignin degradation mechanism whereby cleavage of the dominant nonphenolic structures is mediated by lipid peroxidation products. Two C. subvermispora genes were predicted to encode peroxidases structurally similar to P. chrysosporium lignin peroxidase and, following heterologous expression in Escherichia coli, the enzymes were shown to oxidize high redox potential substrates, but not Mn(2+). Apart from oxidative lignin degradation, we also examined cellulolytic and hemicellulolytic systems in both fungi. In summary, the C. subvermispora genetic inventory and expression patterns exhibit increased oxidoreductase potential and diminished cellulolytic capability relative to P. chrysosporium.

DOI10.1073/pnas.1119912109
Alternate JournalProc. Natl. Acad. Sci. U.S.A.
PubMed ID22434909
PubMed Central IDPMC3325662