1 research outputs found
Trichothecene genotype profiling of wheat Fusarium graminearum species complex in Paraguay
Paraguay is a non-traditional wheat-producing country in one of the warmest regions in South America. Fusarium Head Blight (FHB) is a critical disease affecting this crop, caused by the Fusarium graminearum species complex (FGSC). A variety of these species produce trichothecenes, including deoxynivalenol (DON) and its acetylated forms (3-ADON and 15-ADON) or nivalenol (NIV). This study characterized the phylogenetic relationships, and chemotype diversity of 28 strains within FGSC collected from wheat fields across different country regions. Phylogenetic analysis based on the sequence of elongation factor-1α gene (EF-1α) from 28 strains revealed the presence of four species in the FGSC: F. graminearum sensu stricto, F. asiaticum, F. meridionale and F. cortaderiae. Ten strains selected for further analysis revealed that all F. graminearum strains were 15-ADON chemotype, while the two strains of F. meridionale and one strain of F. asiaticum were NIV chemotype. Thus, the 15-ADON chemotype of F. graminearum sensu stricto was predominant within the Fusarium strains isolated in the country. This work is the first report of phylogenetic relationships and chemotype diversity among Fusarium strains which will help understand the population diversity of this pathogen in Paraguay.Fil: Arrua Alvarenga, Andrea Alejandra. Universidad Nacional de Asunción; ParaguayFil: Iehisa Ouchi, Julio César Masaru. Universidad Nacional de Asunción; ParaguayFil: Cazal MartÃnez, Cinthia Carolina. Universidad Nacional de Asunción; ParaguayFil: Moura Mendes, Juliana. Universidad Nacional de Asunción; ParaguayFil: Colmán, Adans AgustÃn. Universidad Nacional de Asunción; ParaguayFil: Fernández RÃos, Danilo. Universidad Nacional de Asunción; ParaguayFil: Arrua, Pablo David. Universidad Nacional de Asunción; ParaguayFil: Barboza Guerreño, Claudia Adriana. Universidad Nacional de Asunción; ParaguayFil: Kohli, Man Mohan. Cámara Paraguaya de Exportadores y Comercializadores de; ParaguayFil: RamÃrez, MarÃa Laura. Universidad Nacional de RÃo Cuarto. Facultad de Ciencias Exactas FisicoquÃmicas y Naturales. Instituto de Investigación en MicologÃa y MicotoxicologÃa. - Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro CientÃfico Tecnológico Conicet - Córdoba. Instituto de Investigación en MicologÃa y MicotoxicologÃa; ArgentinaFil: Acuña RuÃz, Ana. Universidad Nacional de Asunción; ParaguayFil: Sarmiento, MarÃa Magdalena. Universidad Nacional de Asunción; ParaguayFil: OrtÃz, MarÃa Cecilia. Universidad Nacional de Asunción; ParaguayFil: Nuñez Quiles, Adriana Elizabeth. Universidad Nacional de Asunción; ParaguayFil: Lopez-Nicora, Horacio D.. Ohio University; Estados Unido