Screening of marine fungi for lignocellulose-degrading enzyme activities
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Wen Luo
, Lilian L.P. Vrijmoed und E.B. Gareth Jones
Abstract
Twenty-nine fungal isolates collected from tropical and subtropical mangrove/marine habitats were screened for the presence of lignocellulose-degrading enzyme activities in agar media. These fungi were ascomycetes, except for a basidiomycete, Calathella mangrovei, and a mitosporic fungus, Cirrenalia tropicalis. Endoglucanase and xylanase were the most common enzymes produced. However, none of the fungi exhibited an ability to decolourise Poly-R-478 dye, indicating the lack of ligninolytic peroxidases. Three groups of fungi were categorised according to their cellulolytic, xylanolytic, and ligninolytic enzymes. Group I contained 21 isolates (ca. 72% of the test fungi) able to produce the three enzymes: endoglucanase, xylanase and laccase. Group II comprised 2 isolates lacking the ability to utilise filter paper and/or xylan, whereas Group III consisted of 6 isolates (ca. 21%) with no laccase activity. Five laccase-producing isolates selected for growth on artificial seawater (ASW) agar supplemented with 2,2′-azino-bis-3-ethylbenz-thiazoline-6-sulfonic acid (ABTS), a substrate for this enzyme, exhibited no laccase activity. Further testing in ASW liquid medium with Hypoxylon species B and Halorosellinia oceanica showed that laccase activity was detectable from culture supernatants that had been dialysed against distilled water. Therefore, care is required in assessing laccase activity when using an agar plate assay in the presence of ASW.
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©2005 by Walter de Gruyter Berlin New York
Artikel in diesem Heft
- Author index volume 48 (2005)
- Contents volume 48 (2005)
- Genus/Species index volume 48 (2005)
- Special Issues of Botanica Marina
- 5th Asia Mycological Congress and 9th International Marine and Freshwater Mycology Symposium, Chiang Mai, Thailand, 14–19 November 2004
- Molecular approaches for assessing fungal diversity in marine substrata
- Diversity of marine fungi from Egyptian Red Sea mangroves
- Marine fungi from the Bahamas Islands
- Marine fungi on Nypa fruticans in Thailand
- Abundance of thraustochytrids on fallen decaying leaves of Kandelia candel and mangrove sediments in Futian National Nature Reserve, China
- Screening of marine fungi for lignocellulose-degrading enzyme activities
- Properties of the docosahexaenoic acid-producer Schizochytrium mangrovei Sk-02: effects of glucose, temperature and salinity and their interaction
- A systematic reassessment of the marine ascomycetes Torpedospora and Swampomyces
- Long-term acclimation to UV radiation: effects on growth, photosynthesis and carbonic anhydrase activity in marine diatoms
- Histioneis (Dinophysiales, Dinophyceae) from the western Pacific Ocean
- Molecular investigation reveals epi/endophytic extrageneric kelp (Laminariales, Phaeophyceae) gametophytes colonizing Lessoniopsis littoralis thalli
- Total dietary fiber content in Hawaiian marine algae
- The antibacterial compound sulphoglycerolipid 1-0 palmitoyl-3-0(6′-sulpho-α-quinovopyranosyl)-glycerol from Sargassum wightii Greville (Phaeophyceae)
- Evidence for vertical growth in Zostera noltii Hornem.
- Acknowledgement volume 48 (2005)
Artikel in diesem Heft
- Author index volume 48 (2005)
- Contents volume 48 (2005)
- Genus/Species index volume 48 (2005)
- Special Issues of Botanica Marina
- 5th Asia Mycological Congress and 9th International Marine and Freshwater Mycology Symposium, Chiang Mai, Thailand, 14–19 November 2004
- Molecular approaches for assessing fungal diversity in marine substrata
- Diversity of marine fungi from Egyptian Red Sea mangroves
- Marine fungi from the Bahamas Islands
- Marine fungi on Nypa fruticans in Thailand
- Abundance of thraustochytrids on fallen decaying leaves of Kandelia candel and mangrove sediments in Futian National Nature Reserve, China
- Screening of marine fungi for lignocellulose-degrading enzyme activities
- Properties of the docosahexaenoic acid-producer Schizochytrium mangrovei Sk-02: effects of glucose, temperature and salinity and their interaction
- A systematic reassessment of the marine ascomycetes Torpedospora and Swampomyces
- Long-term acclimation to UV radiation: effects on growth, photosynthesis and carbonic anhydrase activity in marine diatoms
- Histioneis (Dinophysiales, Dinophyceae) from the western Pacific Ocean
- Molecular investigation reveals epi/endophytic extrageneric kelp (Laminariales, Phaeophyceae) gametophytes colonizing Lessoniopsis littoralis thalli
- Total dietary fiber content in Hawaiian marine algae
- The antibacterial compound sulphoglycerolipid 1-0 palmitoyl-3-0(6′-sulpho-α-quinovopyranosyl)-glycerol from Sargassum wightii Greville (Phaeophyceae)
- Evidence for vertical growth in Zostera noltii Hornem.
- Acknowledgement volume 48 (2005)