Ito Y, Peterson S W, Goto T
National Research Institute of Vegetables, Ornamental Plants and Tea, MAFF, Shizuoka, Japan.
Mycopathologia. 1998;144(3):169-75. doi: 10.1023/a:1007021527106.
Fungi in Aspergillus section Flavi include both aflatoxin producers and non-producers. Aspergillus caelatus is a recently described non-aflatoxigenic species in this section, which has some common characteristics with A. tamarii, such as yellowish brown color and double walled spores. In contrast to the morphological similarities, all of the A. caelatus isolates tested produced no cyclopiazonic acid whereas most isolates of A. tamarii produce this compound. There are six nucleotide differences that distinguish the DNA sequences of these two species in the regions of ITS1, ITS2, 5.8S rDNA and 28S rDNA and this is a consistent difference. Both species were isolated from acidified field soils, but A. tamarii isolates were more common than A. caelatus in highly acidic soils.
黄曲霉组中的真菌包括产黄曲霉毒素的和不产黄曲霉毒素的。天蓝曲霉是该组中最近描述的一种不产黄曲霉毒素的物种，它与棕曲霉有一些共同特征，如黄褐色和双层壁孢子。与形态相似性相反，所有测试的天蓝曲霉分离株均不产生环匹阿尼酸，而大多数棕曲霉分离株产生这种化合物。在ITS1、ITS2、5.8S rDNA和28S rDNA区域，有六个核苷酸差异区分这两个物种的DNA序列，这是一个一致的差异。这两个物种均从酸化的田间土壤中分离得到，但在高酸性土壤中，棕曲霉分离株比天蓝曲霉更常见。
