info:eu-repo/semantics/article
Trichothecene genotype profiling of wheat Fusarium graminearum species complex in Paraguay
Fecha
2022-04Registro en:
Arrua Alvarenga, Andrea Alejandra; Iehisa Ouchi, Julio César Masaru; Cazal Martínez, Cinthia Carolina; Moura Mendes, Juliana; Colmán, Adans Agustín; et al.; Trichothecene genotype profiling of wheat Fusarium graminearum species complex in Paraguay; MDPI; Toxins; 14; 4; 4-2022; 1-10
2072-6651
CONICET Digital
CONICET
Autor
Arrua Alvarenga, Andrea Alejandra
Iehisa Ouchi, Julio César Masaru
Cazal Martínez, Cinthia Carolina
Moura Mendes, Juliana
Colmán, Adans Agustín
Fernández Ríos, Danilo
Arrua, Pablo David
Barboza Guerreño, Claudia Adriana
Kohli, Man Mohan
Ramírez, María Laura
Acuña Ruíz, Ana
Sarmiento, María Magdalena
Ortíz, María Cecilia
Nuñez Quiles, Adriana Elizabeth
Lopez-Nicora, Horacio D.
Resumen
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.