Distribution of fungi and mycotoxins and polyphasic study of Phoma spp. isolated from grains of sorghum during different sowing periods

• Grant number: 12/09570-1
• Support type: Scholarships in Brazil - Doctorate
• Effective date (Start): June 01, 2013
• Effective date (End): April 30, 2017
• Field of knowledge: Agronomical Sciences - Food Science and Technology - Food Science
• Principal researcher: Benedito Corrêa
• Grantee: Rodrigo Cardoso de Oliveira
• Home Institution: Instituto de Ciências Biomédicas (ICB). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

In recent decades, the grain sorghum (Sorghum bicolor (L.) Moench.) has shown a significant increase in productivity and planted area in Brazil, becoming a key role as an energy alternative for animal feed. On the other hand, few studies have investigated the contamination of grain by fumonisin and mycotoxins and fall when it comes to analyzing the problem on a technical standpoint, as an example, the investigation of grains in different maturity stages and the interference of different sowing periods. Given the importance of the topic, this project will conduct a detailed study on the occurrence of fungi and mycotoxin (fumonisins and tenuazonic acid) in different maturity stages of grain sorghum, from anthesis to harvest, and two sowing dates (Nov/12; Feb /13). Moreover, climatological data will correlate critical moments of the crop to be carefully observed to obtain adequate grains for human and animal consumption. In addition, a polyphasic study will be realize with strains of Phoma spp., genus that show high incidence in grains of sorghum, involving morphological characters, partial sequencing 3 regions (ITS, ²-TUB and ACT), and enzyme profiles will be evaluate. These results will contribute with important information about distribution of fungi and mycotoxin in grains of sorghum, greater susceptibility stages of culture and on improvement of knowledge of species belong to Phoma complex. (AU)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

OLIVEIRA, Rodrigo Cardoso de. Distribution of fungi and tenuazonic acid in sorghum grains cultivated in different growing seasons and polyphasic study of Phoma spp. isolates.. 2017. Doctoral Thesis - Universidade de São Paulo (USP). Instituto de Ciências Biomédicas São Paulo.