Biological delignification of 14C-labeled [carbon isotope] lignocelluloses by Basidiomycetes: degradation and solubilization of the lignin and cellulose components [NRRL 6464, Pleurotus ostreatus, Phanerochaete chrysosporium, Fungi]
Three basidiomycetes, NRRL 6464, Pleurotus ostreatus, and Phanerochaete chrysosporium, were evaluated for their ability to both solubilize and metabolize to CO 2 differentially 14 C-labeled, naturally complexed lignocellulosics (LC). The fungi were grown on either 14 C-lignin (L*C) or 14 C-glucan (L...
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Veröffentlicht in: | Mycologia 1982, Vol.74 (6), p.943-951 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Three basidiomycetes, NRRL 6464, Pleurotus ostreatus, and Phanerochaete chrysosporium, were evaluated for their ability to both solubilize and metabolize to CO
2
differentially
14
C-labeled, naturally complexed lignocellulosics (LC). The fungi were grown on either
14
C-lignin (L*C) or
14
C-glucan (LC*) substrates for 20 da at 26 C. Several nutrient nitrogen (N) levels were employed to determine if this variable could influence these fungi to preferentially degrade the lignin or glucan component of LC. Pleurotus ostreatus and P. chrysosporium degraded 20% of the L*C component, whereas NRRL 6464 converted 40% of the
14
C-lignin component to
14
CO
2
at 2 mM N or less. At 20 mM N, lignin degradation was suppressed 15 and 60% for P. ostreatus and P. chrysosporium, respectively, after 20 da growth. NRRL 6464 was relatively unaffected by the N levels. With all three fungi, increasing levels of N yielded progressively higher
14
CO
2
evolution from the LC* substrates. |
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ISSN: | 0027-5514 1557-2536 |
DOI: | 10.1080/00275514.1982.12021614 |