نتایج جستجو برای: aflatoxin biosynthesis

تعداد نتایج: 78581  

2009
Baozhu Guo Jiujiang Yu C. Corley Holbrook Thomas E. Cleveland William C. Nierman Brian T. Scully

Peanut (Arachis hypogaea L.), or groundnut, is an important crop economically and nutritionally in many tropical and subtropical areas of the world. It is also one of the most susceptible host crops to Aspergillus flavus resulting in aflatoxin contamination. The prevention or elimination of aflatoxin contamination in preharvest and postharvest crops is a serious challenge facing scientists. The...

Journal: :Applied and environmental microbiology 2004
Kenneth C Ehrlich Perng-Kuang Chang Jiujiang Yu Peter J Cotty

Aspergillus flavus isolates produce only aflatoxins B1 and B2, while Aspergillus parasiticus and Aspergillus nomius produce aflatoxins B1, B2, G1, and G2. Sequence comparison of the aflatoxin biosynthesis pathway gene cluster upstream from the polyketide synthase gene, pksA, revealed that A. flavus isolates are missing portions of genes (cypA and norB) predicted to encode, respectively, a cytoc...

Journal: :Fungal genetics and biology : FG & B 2000
D M Geiser J W Dorner B W Horn J W Taylor

Aspergillus flavus is a common filamentous fungus that produces aflatoxins and presents a major threat to agriculture and human health. Previous phylogenetic studies of A. flavus have shown that it consists of two subgroups, called groups I and II, and morphological studies indicated that it consists of two morphological groups based on sclerotium size, called "S" and "L." The industrially impo...

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