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Triazolide strigolactone mimics as potent selective germinators of parasitic plant Phelipanche ramosa.

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BACKGROUND Strigolactones are a unique class of plant metabolites which serve as a rhizosphere signal for parasitic plants and evocate their seed germination. The expansion of these parasitic weeds in… Click to show full abstract

BACKGROUND Strigolactones are a unique class of plant metabolites which serve as a rhizosphere signal for parasitic plants and evocate their seed germination. The expansion of these parasitic weeds in the food crop fields urgently calls for their increased control and depletion. Simple strigolactone analogues able to stimulate seed germination of these parasitic plants may represent an efficient control measure through the induction of suicidal germination. RESULTS Triazolide-type strigolactone mimics were easily synthesized in three steps from commercially available materials. These derivatives induced effectively seed germination of Phelipanche ramosa with EC50 as low as 5.2 × 10-10 M. These mimics did not induce seed germination of Striga hermonthica even at high concentration (≥1 × 10-5 M). CONCLUSIONS Simple and stable strigolactone mimics with selective activity against Phelipanche ramosa were synthesized. © 2019 Society of Chemical Industry.

Keywords: seed; strigolactone mimics; germination; phelipanche ramosa; strigolactone

Journal Title: Pest management science
Year Published: 2019

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