The transduction pathway that activates systemic acquired resistance in plants is initially signalled by
A)antisense RNA.
B)Pfr phytochrome.
C)salicylic acid.
D)abscisic acid.
E)red, but not far-red, light.

Question

Quizplus · Accepted Answer

The transduction pathway that activates systemic acquired resistance in plants is initially signalled by salicylic acid. Salicylic acid is a key signalling molecule involved in systemic acquired resistance, which is a type of induced resistance in plants that provides long-lasting protection against a wide range of pathogens. Salicylic acid triggers a cascade of responses that help the plant prepare for a possible attack, including the production of defence-related proteins, activation of defence genes, and increased expression of enzymes involved in the production of phytohormones.

The Transduction Pathway That Activates Systemic Acquired Resistance in Plants