Figure 7.
Infection by hdc1 Mutant.
Low magnification (×40) microscopy of maize leaves infected with wild type (367-2) or hdc1 mutant T702.1. Photographs were taken 3 days after inoculation. Conidia (104/mL in 0.1% Tween 20) were sprayed on 3-week-old maize plants of genotype hm1/hm1 grown in a greenhouse, and the plants were covered overnight with plastic bags.
(A) to (C) Wild type. Arrows indicate individual conidia that established infection.
(D) to (F) hdc1 mutant. In (D) and (E), conidia failed to cause infection, whereas (F) shows a rare successful penetration by the hdc1 mutant.