Which of the following would only be activated or upregulated after a plant has already been infected by a pathogen?
A) phytochrome
B) salicylic acid
C) molecular chaperones
D) stress proteins
E) brassinosteroids

Question

Quizplus · Accepted Answer

Salicylic acid is a hormone that is involved in the plant's response to pathogen infection. It is not typically present at high levels in healthy plants, but is synthesized and upregulated specifically in response to infection. The other choices are all involved in various plant processes or stress responses regardless of whether the plant is infected by a pathogen or not.

Which of the Following Would Only Be Activated or Upregulated