Helminthosporium maydis

In maize a variety of stain procedures were used with light microscopy to demonstrate that papillae formed in response to attempted infection by Colletotrichum graminicola and Helminthosporium maydis are composed of lignin (Cadena-Gomez and Nicholson, 1987 Figures 4-7 and 4-8). 

Low molecular weight toxins from Fusiococcum amygdali (75) and Helminthosporium maydis (76) are known to affect stomatal function through their action on guard cells but no polymeric toxins have been shown to act at this site. 

Other powerful phytotoxins, T-Toxins from the fiingus Helminthosporium maydis race T, are derived from acetate (Fig. 5.27) (Kono et al., 1981). 

---