In the gene-for-gene resistance mechanism,if a plant has a resistance gene and a pathogen has the matching avirulence gene,the pairing makes the plant
A) resistant only to that pathogen.
B) resistant to all pathogens.
C) susceptible only to that pathogen.
D) susceptible to all pathogens.
E) able to trigger the hypersensitive response.

Question

Quizplus · Accepted Answer

The gene-for-gene resistance mechanism is based on the interaction of a plant resistance gene and a corresponding pathogen avirulence gene, which both must match. This pairing will result in the activation of plant defense responses and prevent the pathogen from infecting the plant. However, this resistance is specific to that particular pathogen, and the plant may still be susceptible to other pathogens that it does not have a matching resistance gene for. Thus, the correct choice is A, the plant is resistant only to that pathogen.

In the Gene-For-Gene Resistance Mechanism,if a Plant Has a Resistance