Contact us
 |
[email protected] |
 |
3275638434 |
 |
 |
| Paper Publishing WeChat |
Useful Links
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
María Carolina de Luna-López1, Arturo Gerardo Valdivia-Flores1, Fernando Jaramillo-Juárez2, José Luis Reyes3, Raúl Ortiz-Martínez1 and Teódulo Quezada-Tristán1
Full-Text PDF
XML 259 Views
DOI:10.17265/2159-5828/2013.12.007
Affiliation(s)
1. Agricultural Sciences Centre, Mycotoxicology, Aguascalientes Autonomous University, Aguascalientes 20131, Mexico
2. Basic Sciences Centre, Toxicology, Aguascalientes Autonomous University, Aguascalientes 20131, México
3. Department of Physiology and Biophysics, Toxicology, Center for Research and Advanced Studies–I. P. N., México, D. F. 07360, Mexico
ABSTRACT
Aspergillus flavus maize colonization leads to crop contamination by toxic secondary metabolites
and carcinogens called aflatoxins (AF); it has negative effects in public health and has caused economic
losses in agricultural
activities. Eleven genotypes of immature maize grain frequently used in Mexico
were inoculated in vitro with two
indigenous toxigenic strains of A. flavus.
The size of inoculum,
temperature, humidity and presence of other phytopathogens were assessed.
Genotypes Popcorn, C-526, Garst 8366, As910 and 30G40 showed resistance to rating of
fungal colonization (FC) and AF accumulation, while 3002W, 30R39, Creole, C-922, HV313 and P3028W genotypes were less resistant. AFB1 had the highest
concentrations (26.1 mg/kg ± 14.7 mg/kg), while AFB2, AFG1 and AFG2 showed only residual concentrations 1.6, 2.0 and 4.0 μg/kg, respectively.
Concerning FC and AF, there were significant differences (P < 0.01) between strains and genotype. Both strains
showed significant association (P < 0.01) between FC and the concentrations of AFB1 and AFB2 (R2:
99.5% and 93.2%; 87.2% and 73.2%,
respectively). Results suggest that the level of resistance to fungus infection
and AF accumulation is related to maize genotype. It emphasizes the relevance of developing A. flavus resistant maize genotypes as an alternative to
control contamination in foodstuff intended for human and animal consumption.
0pt;f:�fm@:�
s New Roman","serif";
mso-fareast-font-family:宋体;mso-ansi-language:EN-US;mso-fareast-language:EN-US;
mso-bidi-language:AR-SA'>= 0.084, P = 0.062). The high
cyanide contents of cassava leaves from Northern Ghana, due principally to the
high atmospheric temperature, may be a contributory factor to the high
prevalence of goiter
and the persistence of iodine deficiency in that geographic region.
KEYWORDS
AF, Aspergillus flavus, immature maize grain, resistance, Mexico.
Cite this paper
References