4.4 Article

Effect of chemical compounds on amino acid content of some Fusarium species and its significance to fungal chemotaxonomy

Journal

JOURNAL OF SAUDI CHEMICAL SOCIETY
Volume 16, Issue 2, Pages 183-192

Publisher

ELSEVIER SCIENCE BV
DOI: 10.1016/j.jscs.2011.12.007

Keywords

Fungal chemotaxonomy; Amino acids; Fusarium spp.; Environmental conditions

Funding

  1. King Saud University, Deanship of Scientific Research, College of Science, Research Center

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The cellular amino acid profiles of nine species of Fusarium; namely, Fusarium anthophilum, Fusarium avenaceum, Fusarium cerealis, Fusarium graminearum, Fusarium graminum, Fusarium oxysporum f. sp. conglutinans, Fusarium pseudograminearum, Fusarium roseum, and Fusarium sacchari var. elongatum growing on malt extract medium were determined. The amino acid profiles of the investigated fungi were varied and could be used for identification and characterisation of certain Fusarium species. Addition of certain chemical compounds including aspartic acid, glutamic acid, methionine, selenium, and urea to the growth medium affected the amino acid profiles. However, susceptibility of amino acid content to environmental conditions increased the variation of amino acid profiles among all the investigated Fusarium species. Some amino acids were only produced when certain chemical compounds were added to the growth medium. Valine was produced by F. anthophilum only in the presence of aspartic acid or selenium, while serine was produced in the presence of aspartic acid, glutamic acid, or methionine. Also, cysteine was produced by F. avenaceum in the presence of glutamic acid or urea. F. cerealis produced tryptophan only in the presence of aspartic acid or urea, while F. graminearum produced leucine in glutamic, methionine or urea. Similarly, many different amino acids were produced by each Fusarium species only in the presence of certain chemical compounds. The results revealed that the amino acid profiles will be more useful for characterisation and identification of fungi if they are determined under different conditions. (C) 2011 King Saud University. Production and hosting by Elsevier B.V. All rights reserved.

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