Authors:

Kaitlin Riggan

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About Paper:

Pants synthesize and secrete volatile organic compounds (VOCs) as an essential avenue for plant communication, pollinator attraction, and communication between different parts of the plant. These VOCs include sesquiterpenes such as (-) Germacrene D, which is produced in the tubes of petunia flowers and accumulates in the pistil via natural fumigation. As the biosynthetic pathways and transport mechanisms for these sesquiterpenes are better understood, it is also important to uncover the receptor pathways for VOC communication between floral organs. In petunia pistils, KAI2ia has been shown to act as a receptor of (-) Germacrene D and may form a complex with F-box protein MAX2a/b. The KAI2ia receptor pathway of (-) Germacrene D and the downstream effects on the formation of a KAI2ia-MAX2a/b complex are not well understood. Through analysis of rhythmic expression patterns, transient pistil transformation, and co- immunoprecipitation assays, we can uncover the VOC perception pathway for communication between floral organs in petunia. The rhythmic expression pattern is similar between both KAI2ia and KAI2ib, but there is no detectible rhythmicity in MAX2a nor MAX2b expression. Uncovering the receptor pathways for flower communication via natural fumigation may reveal opportunities to increase pollination and improve overall plant health.

Source:

Purdue University / 2023

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Co-authors:

Kaitlin Riggan