(Universidade Federal de Goiás, 2023-01-17) Carrer Filho, Renato; Guimarães, Mariana; Abreu, Vanessa Pereira de; Rocha, Geisiane Alves; Menezes, Renato de Carvalho; Dias, Vanessa Duarte; Cunha, Marcos Gomes da
Sweet corn is susceptible to the attack of various
pathogens that affect its metabolism and compromise its quality
and production. This study aimed to identify the causal agent
of stem rot in sweet corn plants under greenhouse conditions.
The identity of the pathogenic isolate was confirmed by
sequencing of internal transcribed spacer (ITS1/ITS4), beta tubulin (BT2A/BT2B), calmodulin (CL1/CL2) and translation
elongation factor 1α (TEF1). The morphological and sequencing
characteristics showed that Fusarium sacchari, which belongs to
the Fusarium fujikuroi complex, is directly associated with the
symptoms observed in the field. This fungal isolate has never
been associated with diseases in Zea mays (saccharata group) in
Brazil; therefore, this is the first report of the fungus infecting
sweet corn in a cultivated area.