Association of Mycotoxin and Sclerotia Production with Compatibility Groups in Aspergillus flavus from Peanut in Argentina

Plant Disease
M Victoria Novas, Daniel Cabral

Abstract

Vegetative compatibility (VC) of Aspergillus flavus isolates from peanut seed was studied to evaluate preliminary diversity and its association with mycotoxin production and sclerotia production and number. A. parasiticus isolates also were included as a comparative group. Isolates were divided into five categories based on mycotoxin production combination. Five of the A. flavus isolates were considered atypical because they simultaneously produced aflatoxins B, G, and cyclopiazonic acid (CPA). Vegetative compatibility groups (VCGs) were determined through complementation tests between nitrate-nonutilizing mutants. Sclerotia diameters and the number of sclerotia produced per square centimeter were determined for each isolate. Out of 32 isolates of A. flavus, 25 combined in 13 VCGs, whereas the remaining could not be assigned to any particular group. Each VCG included isolates of the same mycotoxin category, with only one exception. Also, all isolates within the same VCG were characterized by their ability to produce or not produce sclerotia. Isolates between VCGs showed significant differences in number of sclerotia per square centimeter, but differences in sclerotia size were not evident. Atypical isolates simultaneously produ...Continue Reading

References

Jan 1, 1993·Annual Review of Phytopathology·J F Leslie
Jan 1, 1992·Annual Review of Phytopathology·N L Glass, G A Kuldau

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Citations

Oct 2, 2014·The Journal of Microbiology·Sheikh Imranudin Sheikh-AliMd Enamul Hoque
Feb 20, 2007·Applied and Environmental Microbiology·Claudia ProbstPeter J Cotty
Mar 6, 2008·International Journal of Systematic and Evolutionary Microbiology·María B PildainRobert A Samson
Feb 18, 2020·Archives of Microbiology·K Raksha RaoG Venkateswaran
Dec 25, 2012·Applied and Environmental Microbiology·Hillary L Mehl, Peter J Cotty
Mar 1, 2006·Mycotoxin Research·K C Ehrlich
Dec 13, 2012·Annals of the New York Academy of Sciences·Hillary L MehlPeter J Cotty
Feb 23, 2021·Saudi Journal of Biological Sciences·Abeer R M Abd El-AzizAfnan A Alobathani
May 8, 2021·Toxicon : Official Journal of the International Society on Toxinology·Ola A A KhalilAhmed Salem Sebaei

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