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Prospecting the genetic diversity of Aspergillus section Flavi isolated in Brazil

Grant number: 18/25597-3
Support Opportunities:Scholarships in Brazil - Post-Doctoral
Effective date (Start): July 01, 2019
Effective date (End): November 30, 2022
Field of knowledge:Biological Sciences - Genetics - Molecular Genetics and Genetics of Microorganisms
Principal Investigator:Beatriz Thie Iamanaka
Grantee:Josué José da Silva
Host Institution: Instituto de Tecnologia de Alimentos (ITAL). Agência Paulista de Tecnologia dos Agronegócios (APTA). Secretaria de Agricultura e Abastecimento (São Paulo - Estado). Campinas , SP, Brazil

Abstract

The contamination of agricultural products with mycotoxins has been a worldwide problem. In Brazil, the predominantly tropical climate favors the planting and production of the most varied crops, but these same conditions, high humidity, and temperature, also favor the development of fungi and contamination by mycotoxins. Among the fungi that produce mycotoxins, those belonging to the genus Aspergillus, especially to the A. section Flavi, are the main aflatoxin producing species and are considered of great relevance. Studies conducted by our research group have sought to evaluate the levels of contamination of various products destined for human consumption with aflatoxins, as well as their relationship with different species of the group A. section Flavi. To know the diversity of fungal species responsible for the contamination of Brazilian agribusiness products with aflatoxins is essential to assist in the definition of control strategies. The taxonomy of this section is complex, has undergone constant changes, and still lacks genetic studies that help in the correct classification and identification of the species. The objective of this project is to investigate the genetic diversity of A. section Flavi, belonging to the collection of the Institute of Food Technology (ITAL), Campinas / SP (obtained from peanuts, rice, cocoa, sugarcane, spices, cassava and Brazil nuts) and the collection of the State University of Londrina (UEL), Londrina / PR (obtained from yerba mate and corn), in addition, it is expected to clarify the phylogenetic relationships concerning against the current taxonomic status of A. section Flavi through the analysis of multiple loci (²-tubulin, calmodulin, and RNA polymerase II), and possibly describe new species belonging to this section.

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Scientific publications (6)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ONO, L. T.; SILVA, J. J.; DONA, S.; MARTINS, L. M.; IAMANAKA, B. T.; FUNGARO, M. H. P.; PITT, J. I.; TANIWAKI, M. H.. Aspergillus section Flavi and aflatoxins in Brazilian cassava (Manihot esculenta Crantz) and products. MYCOTOXIN RESEARCH, v. 37, n. 3, p. 221-228, . (18/25552-0, 18/25597-3, 13/05414-8)
SILVA, JOSUE JOSE; BERTOLDO, RACHEL; PELEGRINELLI FUNGARO, MARIA HELENA; MASSI, FERNANDA PELISSON; TANIWAKI, MARTA HIROMI; SANT'ANA, ANDERSON S.; IAMANAKA, BEATRIZ THIE. Black aspergilli in Brazilian onions: From field to market. International Journal of Food Microbiology, v. 337, . (18/25597-3, 13/05414-8)
SILVA, JOSUE J.; IAMANAKA, BEATRIZ T.; FUNGARO, MARIA HELENA P.; TANIWAKI, MARTA H.. Aflatoxins in sugarcane production chain: what could be the source?. CURRENT OPINION IN FOOD SCIENCE, v. 29, p. 94-98, . (18/25597-3, 11/10073-0, 18/25552-0, 19/06032-8)
ONO, L. T.; SILVA, J. J.; SOTO, T. S.; DONA, S.; IAMANAKA, B. T.; FUNGARO, M. H. P.; TANIWAKI, M. H.. Fungal communities in Brazilian cassava tubers and food products. International Journal of Food Microbiology, v. 384, p. 10-pg., . (18/25552-0, 13/05414-8, 18/25597-3)
SILVA, JOSUE J.; FUNGARO, MARIA H. P.; SOTO, TAYNARA SOUZA; TANIWAKI, MARTA H.; IAMANAKA, BEATRIZ T.. Low-cost, specific PCR assays to identify the main aflatoxigenic species of Aspergillus section Flavi. Journal of Microbiological Methods, v. 196, p. 9-pg., . (18/25597-3, 18/25552-0)
DA SILVA, ADRIANA RAQUEL PERSSON; FUNGARO, MARIA HELENA PELEGRINELLI; SILVA, JOSUE JOSE; MARTINS, LIGIA MANOEL; TANIWAKI, MARTA HIROMI; IAMANAKA, BEATRIZ THIE. Ochratoxin A and related fungi in Brazilian black pepper (Piper nigrum L.). Food Research International, v. 142, . (19/06032-8, 18/25597-3, 17/50349-0)

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