Fusarium species richness in mono- and dicotyledonous weeds and their ability to infect barley and wheat

MARTINEZ M.; ARATA A.; FERNANDEZ M.D.; STENGLEIN S.A.; DINOLFO M.I.

MYCOLOGICAL PROGRESS

SPRINGER HEIDELBERG

Lugar: HEIDELBERG; Año: 2021 vol. 20 p. 1203 - 1216

1617-416X

Fusarium spp. cause diseases and yield and quality losses in cereal crops. They areknown to occur in alternative hosts such as weeds. The aims of the present study were toisolate Fusarium spp. from stems, leaves, and inflorescences of different mono- anddicotyledonous weeds and to evaluate the pathogenicity of obtained species in barley andwheat. A total of 86 Fusarium isolates were obtained from 17 weed samples representing53% mono- and 47% dicotyledonous host species. A member of F. chlamydosporumspecies complex (46.5%), F. proliferatum (26.7%), F. poae (9.3%), and F. verticillioides(8.1%) were the species most frequently isolated. Of the total of Fusarium obtained, 94.2%were pathogenic to wheat, 44.2% to barley, while 40.7% were pathogenic to both crops. Inconclusion, our results demonstrate that different Fusarium spp. can occur in different weedtissues collected from a restricted area of a cultivable land. None of the weed speciesanalysed presented symptoms of Fusarium infection. In this context, an integrated weedmanagement becomes relevant to minimize the impact of Fusarium spp. on yield, grainquality, and mycotoxin contamination.