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Evidence for ligninolytic activity of the ascomycete fungus Podospora anserina.

Author(s): van Erven G, Kleijn AF, Patyshakuliyeva A, Di Falco M, Tsang A, de Vries RP, van Berkel WJH, Kabel MA

Biotechnol Biofuels. 2020;13:75 Authors: van Erven G, Kleijn AF, Patyshakuliyeva A, Di Falco M, Tsang A, de Vries RP, van Berkel WJH, Kabel MA

Article GUID: 32322305
The production and characterization of a new active lipase from Acremonium alcalophilum using a plant bioreactor.

Author(s): Pereira EO, Tsang A, McAllister TA, Menassa R

Biotechnol Biofuels. 2013;6:111 Authors: Pereira EO, Tsang A, McAllister TA, Menassa R

Article GUID: 23915965
Deconstructing the genetic basis of spent sulphite liquor tolerance using deep sequencing of genome-shuffled yeast.

Author(s): Pinel D, Colatriano D, Jiang H, Lee H, Martin VJ

Biotechnol Biofuels. 2015;8:53 Authors: Pinel D, Colatriano D, Jiang H, Lee H, Martin VJ

Article GUID: 25866561
Closely related fungi employ diverse enzymatic strategies to degrade plant biomass.

Author(s): Benoit I, Culleton H, Zhou M, DiFalco M, Aguilar-Osorio G, Battaglia E, Bouzid O, Brouwer CPJM, El-Bushari HBO, Coutinho PM, Gruben BS, Hild...

Biotechnol Biofuels. 2015;8:107 Authors: Benoit I, Culleton H, Zhou M, DiFalco M, Aguilar-Osorio G, Battaglia E, Bouzid O, Brouwer CPJM, El-Bushari HBO, Coutinho PM, Gruben BS, Hildén KS, Hou...

Article GUID: 26236396
Directed evolution of a fungal β-glucosidase in Saccharomyces cerevisiae.

Author(s): Larue K, Melgar M, Martin VJ

Biotechnol Biofuels. 2016;9:52 Authors: Larue K, Melgar M, Martin VJ

Article GUID: 26949413
Determinants of selection in yeast evolved by genome shuffling.

Author(s): Biot-Pelletier D, Pinel D, Larue K, Martin VJJ

Biotechnol Biofuels. 2018;11:282 Authors: Biot-Pelletier D, Pinel D, Larue K, Martin VJJ

Article GUID: 30356826
Title:Evidence for ligninolytic activity of the ascomycete fungus Podospora anserina.
Authors:van Erven G,  Kleijn AF,  Patyshakuliyeva A,  Di Falco M,  Tsang A,  de Vries RP,  van Berkel WJH,  Kabel MA
Link:https://www.ncbi.nlm.nih.gov/pubmed/32322305?dopt=Abstract
DOI:10.1186/s13068-020-01713-z
Category:Biotechnol Biofuels
PMID:32322305
Dept Affiliation: GENOMICS
1 1Laboratory of Food Chemistry, Wageningen University and Research, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands.
2 2Fungal Physiology, Westerdijk Fungal Biodiversity Institute and Fungal Molecular Physiology, Utrecht University, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands.
3 3Centre for Structural and Functional Genomics, Concordia University, 7141 Sherbrooke Street West, Montréal, Québec H4B 1R6 Canada.

Description:

Evidence for ligninolytic activity of the ascomycete fungus Podospora anserina.

Biotechnol Biofuels. 2020;13:75

Authors: van Erven G, Kleijn AF, Patyshakuliyeva A, Di Falco M, Tsang A, de Vries RP, van Berkel WJH, Kabel MA

Abstract

Background: The ascomycete fungus Podospora anserina has been appreciated for its targeted carbohydrate-active enzymatic arsenal. As a late colonizer of herbivorous dung, the fungus acts specifically on the more recalcitrant fraction of lignocellulose and this lignin-rich biotope might have resulted in the evolution of ligninolytic activities. However, the lignin-degrading abilities of the fungus have not been demonstrated by chemical analyses at the molecular level and are, thus far, solely based on genome and secretome predictions. To evaluate whether P. anserina might provide a novel source of lignin-active enzymes to tap into for potential biotechnological applications, we comprehensively mapped wheat straw lignin during fungal growth and characterized the fungal secretome.

Results: Quantitative 13C lignin internal standard py-GC-MS analysis showed substantial lignin removal during the 7 days of fungal growth (24% w/w), though carbohydrates were preferably targeted (58% w/w removal). Structural characterization of residual lignin by using py-GC-MS and HSQC NMR analyses demonstrated that Ca-oxidized substructures significantly increased through fungal action, while intact ß-O-4' aryl ether linkages, p-coumarate and ferulate moieties decreased, albeit to lesser extents than observed for the action of basidiomycetes. Proteomic analysis indicated that the presence of lignin induced considerable changes in the secretome of P. anserina. This was particularly reflected in a strong reduction of cellulases and galactomannanases, while H2O2-producing enzymes clearly increased. The latter enzymes, together with laccases, were likely involved in the observed ligninolysis.

Conclusions: For the first time, we provide unambiguous evidence for the ligninolytic activity of the ascomycete fungus P. anserina and expand the view on its enzymatic repertoire beyond carbohydrate degradation. Our results can be of significance for the development of biological lignin conversion technologies by contributing to the quest for novel lignin-active enzymes and organisms.

PMID: 32322305 [PubMed]