This study had focused on maize as a host in the
histopathological studies though studies using other
hosts such as Sudan grass (Sorghum vulgare var
sudanense) and broomcorn (Sorghum vulgare var
technium) have reported similar pathological histology
(Hilu & Hooker 1964; Lilian et al., 2002, Naseri et al.,
2008). The pathological histology of E. turcicum is
unique compared to those of other leaf diseases
caused by Helminthosporium in that growth of the
fungus is most profuse in xylem tissue, while growth of
others is almost confined to the chlorenchyma. With E.