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 type of induced plant resistance that occurs after an initial infection and provides protection against subsequent infections by the same or related pathogens throughout the entire plant. It involves the production of signaling molecules that activate a cascade of defense responses in the plant, which can include the accumulation of pathogenesis-related proteins and the strengthening of cell walls. In this scenario, the initial infection of the upper leaves likely triggered the SAR response, which then provided protection to the roots when they were subsequently attacked by the same bacteria.

A Certain Bacterium Infects a Plant's Upper Leaves