Plants surprise by expending energy kicking up a stink

pollination of a petunia by a moth

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Discovery that flowers don’t just passively release their volatile, smelly compounds overturns conventional wisdom

It seems that plants actively emit their fragrances and whiffs thanks to transporter proteins inside plant cells rather than just release them passively. The discovery means that plants use energy to smell the way they do and offers new insight into the importance of plant communication.