What is the probable role of salicylic acid in the defense responses of plants?
A) to destroy pathogens directly
B) to activate systemic acquired resistance of plants
C) to close stomata, thus preventing the entry of pathogens
D) to activate heat-shock proteins
E) to sacrifice infected tissues by hydrolyzing cells

Question

Quizplus · Accepted Answer

Salicylic acid is known to activate the systemic acquired resistance (SAR) response in plants, which is a type of defense response that can protect the plant from a variety of pathogens. SAR involves the production of various defense-related molecules throughout the plant, including phytoalexins, enzymes, and reactive oxygen species. Salicylic acid is thought to act as a signaling molecule that helps to coordinate this response.

What Is the Probable Role of Salicylic Acid in the Defense