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United States Department of Agriculture

Agricultural Research Service

Research Project: Control of Aflatoxin Production by Targeting Aflatoxin Biosynthesis

Location: Food and Feed Safety Research

Title: Sex and recombination in aflatoxigenic Aspergilli: global implications

Author
item Moore, Geromy

Submitted to: Frontiers in Microbiology
Publication Type: Review Article
Publication Acceptance Date: January 17, 2014
Publication Date: February 5, 2014
Citation: Moore, G.G. 2014. Sex and recombination in aflatoxigenic Aspergilli: global implications. Frontiers in Microbiology. 5(32):doi10.3389/fmicb.

Technical Abstract: For most of the half century that aflatoxigenic species have been intensively studied, these molds were known only to reproduce asexually, with parasexuality found only in the laboratory between certain mutant strains. Therefore, the fairly recent discovery of their sexual (teleomorphic) states creates a new wrinkle in our understanding of the field behavior of these agriculturally significant fungi. Sex within populations of these fungi, and attendant genetic recombination, eventually may create difficulties for their control; and subsequently for the protection of important human and animal food supplies. Moreover, if fungal sex is a form of response to ecological and environmental stressors, then perhaps human influence and climate change could lead to an increase in genetic recombination thereby rendering current control measures inadequate, and requiring new strategies for the control or prevention of aflatoxin contamination. This article will explore scientific research into sexuality and recombination in aflatoxigenic Aspergillus species; the potential impacts these phenomena could have on a popular method of pre-harvest prevention of aflatoxin contamination (i.e., use of non-aflatoxigenic A. flavus for biocontrol); and the outlook for maintaining control of aflatoxin contamination in an era of changing global climate.

Last Modified: 7/30/2014
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