Highly diverse and rapidly spreading: Melanagromyza sojae threatens the soybean belt of South America

• Autores: Pozebon, Henrique; Ugalde, Gustavo Andrade; Smagghe, Guy; Tay, Wee Tek; Karut, Kamil; Copa Bazán, Angel Fernando; Vitorio, Lucas; Peralta, Roberto; Saluso, Adriana; Ramírez-Paredes, Mónica Lucía; Murúa, María Gabriela; Guedes, Jerson Vanderlei Carús; Arnemann, Jonas André
• Año de publicación: 2021
• Idioma: inglés
• Tipo de recurso: artículo
• Fuente: Biological Invasions (Published: 02 February 2021)
• Materia: Soja; Plagas de Plantas; Insecta; Melanagromyza; Glycine max; Variación Genética; América del Sur; Soybeans; Pests of Plants; Genetic Variation; South America; Melanagromyza sojae
• Institución: Instituto Nacional de Tecnología Agropecuaria

The soybean stem fly, Melanagromyza sojae, an Asian native insect, has successfully established in Brazil, Argentina, Paraguay and Bolivia. These countries are among the lead global soybean producing nations, being collectively known as the soybean belt of South America. Infestation levels of M. sojae grow by the year, facilitated by the lack of efficient management strategies. Previous studies have revealed a high number of maternal lineages in M. sojae populations from Southern Brazil and Paraguay, but a comprehensive survey on genetic diversity combining samples from all countries within the South American soybean belt remains absent. We used the mitochondrial DNA cytochrome oxidase I partial gene (mtCOI) to characterize specimens of M. sojae collected in fourteen Brazilian sites and one Argentine site, and then combined our mtCOI data with previously published data from Australia, Bolivia, Paraguay, and other Brazilian sites, to investigate genetic diversity in this invasive agricultural pest species. Based on the molecular characterisation of the mtCOI gene, haplotypes Msoj-COI-01 and Msoj-COI-02 have the highest frequencies in the continent. The high genetic diversity found is evidence of introductions involving multiple female founders into the continent, and the high proportion of unique mtDNA haplotypes identified from Brazil, Paraguay and Bolivia (~ 50%) suggests potential novel introductions have taken place. The findings from our study will contribute to a better understanding of M. sojae genetic diversity in South America, supporting the development of management strategies for this highly invasive pest and assisting with biosecurity preparedness of other emerging Agromyzidae flies of economic importance.
EEA Paraná
Fil: Pozebon, Henrique. Federal University of Santa Maria. Crop Protection Department; Brasil
Fil: Ugalde, Gustavo Andrade. Federal University of Santa Maria. Crop Protection Department; Brasil
Fil: Smagghe, Guy. Ghent University. Department of Plants and Crops; Bélgica
Fil: Tay, Wee Tek. CSIRO. Black Mountain Laboratories; Australia
Fil: Karut, Kamil. Çukurova University. Agricultural Faculty. Department of Plant Protection; Turquía
Fil: Copa Bazán, Angel Fernando. Universidad Autonoma Gabriel René Moreno; Bolivia
Fil: Vitorio, Lucas. Syngenta Crop Protection S.A. Research and Development; Bolivia
Fil: Peralta, Roberto. Halcón Monitoreos; Argentina
Fil: Saluso, Adriana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina
Fil: Ramírez-Paredes, Mónica Lucía. Universidad Católica Nuestra Señora de La Asunción; Paraguay
Fil: Murúa, María Gabriela. Instituto de Tecnologia Agroindustrial del Noroeste Argentino; Argentina
Fil: Guedes, Jerson Vanderlei Carús. Federal University of Santa Maria. Crop Protection Department; Brasil
Fil: Arnemann, Jonas André. Federal University of Santa Maria. Crop Protection Department; Brasil