Using a grass substrate to compare decay among two clades of brown rot fungi.
Identifieur interne : 002427 ( Main/Exploration ); précédent : 002426; suivant : 002428Using a grass substrate to compare decay among two clades of brown rot fungi.
Auteurs : Justin T. Kaffenberger [États-Unis] ; Jonathan S. SchillingSource :
- Applied microbiology and biotechnology [ 1432-0614 ] ; 2013.
Descripteurs français
- KwdFr :
- Basidiomycota (croissance et développement), Basidiomycota (métabolisme), Coriolaceae (croissance et développement), Coriolaceae (métabolisme), Milieux de culture (composition chimique), Mycologie (méthodes), Poaceae (microbiologie), Poaceae (métabolisme), Populus (microbiologie), Populus (métabolisme), Zea mays (microbiologie), Zea mays (métabolisme).
- MESH :
- composition chimique : Milieux de culture.
- croissance et développement : Basidiomycota, Coriolaceae.
- microbiologie : Poaceae, Populus, Zea mays.
- métabolisme : Basidiomycota, Coriolaceae, Poaceae, Populus, Zea mays.
- méthodes : Mycologie.
English descriptors
- KwdEn :
- Basidiomycota (growth & development), Basidiomycota (metabolism), Coriolaceae (growth & development), Coriolaceae (metabolism), Culture Media (chemistry), Mycology (methods), Poaceae (metabolism), Poaceae (microbiology), Populus (metabolism), Populus (microbiology), Zea mays (metabolism), Zea mays (microbiology).
- MESH :
- chemical , chemistry : Culture Media.
- growth & development : Basidiomycota, Coriolaceae.
- metabolism : Basidiomycota, Coriolaceae, Poaceae, Populus, Zea mays.
- methods : Mycology.
- microbiology : Poaceae, Populus, Zea mays.
Abstract
Interest in the mechanisms of wood-degrading fungi has grown in tandem with lignocellulose bioconversion efforts, yet many potential biomass feedstocks are non-woody. Using corn stover (Zea mays) as a substrate, we tracked degradative capacities among brown rot fungi from the Antrodia clade, including Postia placenta, the first brown rot fungus to have its genome sequenced. Decay dynamics were compared against Gloeophyllum trabeum from the Gloeophyllum clade. Weight loss induced by P. placenta (6.2 %) and five other Antrodia clade isolates (average 7.4 %) on corn stalk after 12 weeks demonstrated inefficiency among these fungi, relative to decay induced by G. trabeum (44.4 %). Using aspen (Populus sp.) as a woody substrate resulted in, on average, a fourfold increase in weight loss induced by Antrodia clade fungi, while G. trabeum results matched those on stover. The sequence and trajectories of chemical constituent losses differed as a function of substrate but not fungal clade. Instead, chemical data suggest that characters unique to stover limit decay by the Antrodia clade, rather than disparities in growth rate or extractives toxicity. High p-coumaryl lignin content, lacking the methoxy groups characteristically cleaved during brown rot, is among potential rate-distinguishing characters in grasses. This ineptitude among Antrodia clade fungi on grasses was supported by meta-analysis of other unrelated studies using grass substrates. Concerning application, results expose a problem if adopting the strategy of the model decay fungus P. placenta to treat corn stover, a widely available plant feedstock. Overall, the results insinuate phylogenetically distinct modes of brown rot and demonstrate the benefit of using non-woody substrates to probe wood degradation mechanisms.
DOI: 10.1007/s00253-013-5142-0
PubMed: 23917637
Affiliations:
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Using corn stover (Zea mays) as a substrate, we tracked degradative capacities among brown rot fungi from the Antrodia clade, including Postia placenta, the first brown rot fungus to have its genome sequenced. Decay dynamics were compared against Gloeophyllum trabeum from the Gloeophyllum clade. Weight loss induced by P. placenta (6.2 %) and five other Antrodia clade isolates (average 7.4 %) on corn stalk after 12 weeks demonstrated inefficiency among these fungi, relative to decay induced by G. trabeum (44.4 %). Using aspen (Populus sp.) as a woody substrate resulted in, on average, a fourfold increase in weight loss induced by Antrodia clade fungi, while G. trabeum results matched those on stover. The sequence and trajectories of chemical constituent losses differed as a function of substrate but not fungal clade. Instead, chemical data suggest that characters unique to stover limit decay by the Antrodia clade, rather than disparities in growth rate or extractives toxicity. High p-coumaryl lignin content, lacking the methoxy groups characteristically cleaved during brown rot, is among potential rate-distinguishing characters in grasses. This ineptitude among Antrodia clade fungi on grasses was supported by meta-analysis of other unrelated studies using grass substrates. Concerning application, results expose a problem if adopting the strategy of the model decay fungus P. placenta to treat corn stover, a widely available plant feedstock. Overall, the results insinuate phylogenetically distinct modes of brown rot and demonstrate the benefit of using non-woody substrates to probe wood degradation mechanisms. </div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">23917637</PMID><DateCompleted><Year>2014</Year><Month>03</Month><Day>10</Day></DateCompleted><DateRevised><Year>2019</Year><Month>12</Month><Day>10</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1432-0614</ISSN><JournalIssue CitedMedium="Internet"><Volume>97</Volume><Issue>19</Issue><PubDate><Year>2013</Year><Month>Oct</Month></PubDate></JournalIssue><Title>Applied microbiology and biotechnology</Title><ISOAbbreviation>Appl Microbiol Biotechnol</ISOAbbreviation></Journal><ArticleTitle>Using a grass substrate to compare decay among two clades of brown rot fungi.</ArticleTitle><Pagination><MedlinePgn>8831-40</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1007/s00253-013-5142-0</ELocationID><Abstract><AbstractText>Interest in the mechanisms of wood-degrading fungi has grown in tandem with lignocellulose bioconversion efforts, yet many potential biomass feedstocks are non-woody. Using corn stover (Zea mays) as a substrate, we tracked degradative capacities among brown rot fungi from the Antrodia clade, including Postia placenta, the first brown rot fungus to have its genome sequenced. Decay dynamics were compared against Gloeophyllum trabeum from the Gloeophyllum clade. Weight loss induced by P. placenta (6.2 %) and five other Antrodia clade isolates (average 7.4 %) on corn stalk after 12 weeks demonstrated inefficiency among these fungi, relative to decay induced by G. trabeum (44.4 %). Using aspen (Populus sp.) as a woody substrate resulted in, on average, a fourfold increase in weight loss induced by Antrodia clade fungi, while G. trabeum results matched those on stover. The sequence and trajectories of chemical constituent losses differed as a function of substrate but not fungal clade. Instead, chemical data suggest that characters unique to stover limit decay by the Antrodia clade, rather than disparities in growth rate or extractives toxicity. High p-coumaryl lignin content, lacking the methoxy groups characteristically cleaved during brown rot, is among potential rate-distinguishing characters in grasses. This ineptitude among Antrodia clade fungi on grasses was supported by meta-analysis of other unrelated studies using grass substrates. Concerning application, results expose a problem if adopting the strategy of the model decay fungus P. placenta to treat corn stover, a widely available plant feedstock. 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Schilling</name></noCountry><country name="États-Unis"><noRegion><name sortKey="Kaffenberger, Justin T" sort="Kaffenberger, Justin T" uniqKey="Kaffenberger J" first="Justin T" last="Kaffenberger">Justin T. Kaffenberger</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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