A certain bacterium infects a plant's upper leaves.A few days later,bacteria of the same species attempt to infect the same plant's roots but are unsuccessful.What process is responsible for the plant's ability to prevent this infection?

Question

Quizplus · Accepted Answer

Systemic acquired resistance (SAR) is a process by which a plant can defend against a wide range of pathogens after being exposed to a triggering infection. This defense mechanism involves the production of compounds that can inhibit the growth and spread of invading pathogens, as well as activate other defense responses within the plant. Once SAR is induced, the plant becomes less susceptible to subsequent infections by the same or different pathogens. Therefore, the plant's ability to prevent infection of the roots by the same bacterial species that infected the leaves is likely due to SAR.

A Certain Bacterium Infects a Plant's Upper Leaves