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Noor Atiqah Zulkifli
School of Biological Sciences, Universiti Sains Malaysia, Pulau Pinang
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences

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Morphological and Molecular Diversity of Aspergillus From Corn Grain Used as Livestock Feed Noor Atiqah Zulkifli; Latiffah Zakaria
HAYATI Journal of Biosciences Vol. 24 No. 1 (2017): January 2017
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2299.513 KB) | DOI: 10.4308/hjb.24.1.26

Abstract

The study of Aspergillus from corn grains used as livestock feed is important to ensure the safety of the grains as the occurrence of Aspergillus in the corn grain can give an indication of mycotoxin being produced. Morphological and molecular identifications were applied to identify Aspergillus isolated from corn grains used as livestock feed. Morphologically, six species were tentatively identified, namely Aspergillus niger (Groups I and II), Aspergillus flavus, Aspergillus oryzae, Aspergillus fumigatus, Aspergillus clavatus and Aspergillus terreus. Isolates of A. niger was divided into two groups based on slight differences of their colony appearances. Molecular identification using internal transcribed spacer and β-tubulin sequences supported morphological identification except isolates for A. niger Group II isolates, which were molecularly identified as Aspergillus tubingensis. Neighbour-joining phylogenetic tree showed that isolates from the same species were grouped in the same clade. The present study showed that diverse species of Aspergillus are prevalent in corn grain used as livestock feed. It is also necessary to correctly identify the Aspergillus species to employ correct treatment of contaminated corn grains. The occurrence of well-known toxigenic species such as A. niger, A. flavus and A. fumigatus suggested the possible risk of mycotoxin contamination of the corn grain.
Co-Authors Latiffah Zakaria