NDLI: Screening and Identification of Endomannanase-Producing Microfungi from Hypersaline Environments

Content Provider	Springer Nature Link
Author	Mudau, Mabyalwa Maria Setati, Mathabatha Evodia
Copyright Year	2006
Abstract	A culture-dependent enrichment technique was used to isolate endo-1,4-β-mannanase–producing fungi from a hypersaline environment. Galactomannan was used as carbon source and resulted in isolation of strains of Scopulariopsis brevicaulis, S. candida, and Verticillium dahliae. The Scopulariopsis isolates were found to be more dominant and could be isolated from consecutive evaporation ponds, whereas Verticillium was only isolated from one pond. The Scopulariopsis strains exhibited only endomannanase activity, whereas Verticillium displayed broad-activity spectrum by secreting endoxylanases and cellulases in addition to endomannanases. S. candida LMK004 and LMK008 produced 7420 and 14750 nkat g−1 biomass, respectively. Endomannanase production in these strains increased with an increase in NaCl concentration up to 10% (w/v), after which both growth and enzyme production was decreased. V. dahliae LMK006 grew and produced up to 5000 nkat g−1 biomass endomannanase in the absence of NaCl. Increased NaCl concentration had a negative effect on this strain. S. brevicaulis LMK002 showed poor endomannanase production but a similar growth trend as the other Scopulariopsis strains. In general, the Scopulariopsis strains exhibited better halotolerance than V. dahliae and could grow in the presence of 20% NaCl on solid medium.
Starting Page	477
Ending Page	481
Page Count	5
File Format	PDF
ISSN	03438651
Journal	Current Microbiology
Volume Number	52
Issue Number	6
e-ISSN	14320991
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-05-09
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biotechnology Microbiology
Content Type	Text
Resource Type	Article
Subject	Medicine Microbiology Applied Microbiology and Biotechnology

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