Figure 1From: Global changes in gene expression during compatible and incompatible interactions of cowpea (Vigna unguiculata L.) with the root parasitic angiosperm Striga gesnerioidesRepresentative photographs showing the differential response of roots of cowpea cultivar B301 to infection by two different races of S. gesnerioides. (A) Roots infected with S. gesnerioides race SG3 at 6 days post-inoculation (dpi) showing a hypersensitive response; (B) Roots infected with S. gesnerioides race SG3 at 13 dpi showing a hypersensitive response and parasite death; (C) Roots infected with S. gesnerioides race SG4z at 6 dpi showing early penetration of host; (D) Roots infected with S. gesnerioides race SG4z at 13 dpi showing parasite growth.Back to article page