GATE XL concept:salicylic-acid-sa PYQs & Answers

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concept:salicylic-acid-sa

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Although Pseudomonas syringae infection in plants is actively inhibited by the endogenous salicylic acid (SA) of host origin, a successful infection is still established because the bacterium secretes coronatine, an effector molecule. Which one of the following best describes the mode of action of coronatine?

Your answerChoose one option.

Coronatine inhibits SA biosynthesis.

Coronatine promotes the biosynthesis of jasmonic acid (JA), and JA signal in turn inhibits SA response.

Coronatine is a structural analogue of SA, which binds to the SA receptor and inhibits its function.

Coronatine is a structural analogue of jasmonic acid (JA), which activates JA signaling to inhibit SA response.

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GATE XL concept:salicylic-acid-sa PYQs

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Question 49