کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4369492 1616752 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Aflatoxin-producing Aspergillus species from Thailand
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش تغذیه
پیش نمایش صفحه اول مقاله
Aflatoxin-producing Aspergillus species from Thailand
چکیده انگلیسی

Aflatoxin-producing Aspergillus species were isolated from soil samples from ten different regions within Thailand. Aspergillus flavus was present in all of the soil samples. Unlike previous studies, we found no A. parasiticus or A. flavus capable of both B- and G-type aflatoxin production in any of the samples. A. pseudotamarii, which had not been previously reported from Thailand, was found in four soil samples. In two of the samples A. nomius was determined to be the most abundant aflatoxin-producing species. Based on sequence alignments for three DNA regions (Taka-amylase A (taa), the rRNA internal transcribed spacer (ITS), and the intergenic region for the aflatoxin biosynthesis genes aflJ and aflR) the A. nomius isolates separated into three well-supported clades. Isolates from one of the A. nomius clades had morphological properties similar to those found for S-type isolates capable of B and G aflatoxin production and could easily be mistaken for these isolates. Our results suggest that such unusual A. nomius isolates could be a previously unrecognized agent for aflatoxin contamination in Thailand.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Food Microbiology - Volume 114, Issue 2, 10 March 2007, Pages 153–159
نویسندگان
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