Auxin-Induced Nicotine Inhibition Is Mediated by NaARF5 Through the Suppression of NaERF1-Like Expression and Interaction With NaERF1-Like in Nicotiana attenuata.

Nicotine is the most abundant alkaloid produced by Nicotiana species against insect herbivores. Although it has been known for decades that auxin can strongly inhibit nicotine biosynthesis, the underlying mechanisms have remained unclear. Here we dem…

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