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Int. J. Mol. Sci. 2015, 16(7), 15328-15346;

Fungi Isolated from Maize (Zea mays L.) Grains and Production of Associated Enzyme Activities

Department of Biochemistry, State University of Maringá, Av. Colombo, 5790, Maringá 87020-900, Brazil
Department of Agronomy, State University of Maringá, Av. Colombo, 5790, Maringá 87020-900, Brazil
Author to whom correspondence should be addressed.
Academic Editor: Ritva Tikkanen
Received: 28 January 2015 / Revised: 11 June 2015 / Accepted: 11 June 2015 / Published: 7 July 2015
(This article belongs to the Section Green Chemistry)
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Filamentous fungi produce a great variety of enzymes, and research on their biotechnological potential has recently intensified. The objective of this work was to identify, at the species level, using DNA barcoding, 46 fungal isolates obtained from maize grains with rot symptoms. We also analyzed the production of extracellular amylases, cellulases, proteases and lipases of 33 of those fungal isolates. The enzymatic activities were evaluated by the formation of a clear halo or a white precipitate around the colonies in defined substrate media. The found fungi belong to the genera Talaromyces, Stenocarpella, Penicillium, Phlebiopsis, Cladosporium, Hyphopichia, Epicoccum, Trichoderma, Aspergillus, Irpex, Fusarium, Microdochium, Mucor and Sarocladium. In the genus Fusarium, the species Fusarium verticillioides was predominant and this genus presented the highest diversity, followed by the genera Aspergillus. The best genera for lipase production were Cladosporium and Penicillium; while Cladosporium, Aspergillus and Penicillium were best for cellulase activity; Hyphopichia, Aspergillus and Irpex for amylase activity; and Cladosporium and Sarocladium for proteases activity. In conclusion, a collection of fungi from maize seeds presenting rotten symptoms were obtained, among which exist important producers of hydrolases. View Full-Text
Keywords: amylase; cellulase; protease; lipase; fungi; corn amylase; cellulase; protease; lipase; fungi; corn

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Abe, C.A.L.; Faria, C.B.; de Castro, F.F.; de Souza, S.R.; Santos, F.C.; da Silva, C.N.; Tessmann, D.J.; Barbosa-Tessmann, I.P. Fungi Isolated from Maize (Zea mays L.) Grains and Production of Associated Enzyme Activities. Int. J. Mol. Sci. 2015, 16, 15328-15346.

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