Investigations on Hydrolytic Activities from Stachybotrys microspora and Their Use as an Alternative in Yeast DNA Extraction

• Published in: Applied biochemistry and biotechnology 2014-02, Vol.172 (3), p.1599-1611
• Main Authors: Abdeljalil, Salma, Ben Hmad, Ines, Saibi, Walid, Amouri, Bahia, Maalej, Wiem, Kaaniche, Marwa, Koubaa, Aida, Gargouri, Ali
• Format: Article
• Language: English
• Subjects: beta-glucanase; beta-glucosidase; Biochemistry; Biological and medical sciences; Biotechnology; carbon; Carbon sources; Cellulases - biosynthesis; Cellulose; Chemistry; Chemistry and Materials Science; Chitinases - biosynthesis; Culture Media; Deoxyribonucleic acid; DNA; DNA, Fungal - chemistry; DNA, Fungal - isolation & purification; Enzymes; Fundamental and applied biological sciences. Psychology; glucose; Glucose - chemistry; Hydrolysis; Microspora; Mutation; proteinases; secretion; Stachybotrys; Stachybotrys - enzymology; Triticum aestivum; Wheat bran; xylanases; Yeast; Yeasts
• ISSN: 0273-2289; 1559-0291
• DOI: 10.1007/s12010-013-0608-1

Stachybotrys microspora is a filamentous fungus characterized by the secretion of multiple hydrolytic activities (cellulolytic and non-cellulolytic enzymes). The production of these biocatalysts was studied under submerged culture using glucose, cellulose, and wheat bran as carbon sources. Endoglucanases, pectinases, xylanases, β-glucanases, chitinases, and proteases were induced on cellulose-based medium and repressed on glucose in both strains with higher amounts produced by the mutant. β-glucosidases were roughly equally produced by both strains under glucose and cellulose conditions. The yield of chitinases, β-glucanases, and proteases produced by Stachybotrys strains was as much higher than the commercialized lysing enzyme called “zymolyase,” currently used in yeast DNA extraction. In this context, we showed that S. microspora hydrolases can be successfully applied in the extraction of yeast DNA.