Chapter 38 - Plant Responses to Environmental Challenges - 38.1 - Plants Respond to Pathogens and Constitute and Induced Responses - 38.1 Recap - Learning Outcomes - Page 811: 2

Specific strains of rust fungus caused disease only in the varieties of flax that didn’t carry specific R genes. If a flax variety carried the appropriate R gene, it was resistant to those strains of fungus. Thus, a particular Avr gene inhibited the virus's effect on flax plants with the corresponding R gene.

Specific strains of rust fungus caused disease only in the varieties of flax that didn’t carry specific R genes. If a flax variety carried the appropriate R gene, it was resistant to those strains of fungus. Thus, a particular Avr gene inhibited the virus's effect on flax plants with the corresponding R gene.