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Summary Statement While avirulent Russian wheat aphids trigger defensive mono‐ and diterpenoid production in resistant ( Dn7 ) wheat, these downstream terpenoids are suppressed by a virulent biotype despite inducing upstream jasmonic acid (JA) biosynthesis. Concurrently, DnDCXR is upregulated in the virulent aphid, which we propose acts as a metabolic effector that scavenges in planta JA to disarm host defences.
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Swiegers et al. (2026) studied this question.
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