A femtomolar-range suicide germination stimulant for the parasitic plant striga hermonthica

Daisuke Uraguchi, Keiko Kuwata, Yuh Hijikata, Rie Yamaguchi, Hanae Imaizumi, A. M. Sathiyanarayanan, Christin Rakers, Narumi Mori, Kohki Akiyama, Stephan Irle, Peter McCourt, Toshinori Kinoshita, Takashi Ooi, Yuichiro Tsuchiya

Research output: Contribution to journalArticlepeer-review

94 Scopus citations

Abstract

The parasitic plant Striga hermonthica has been causing devastating damage to the crop production in Africa. Because Striga requires host-generated strigolactones to germinate, the identification of selective and potent strigolactone agonists could help control these noxious weeds. We developed a selective agonist, sphynolactone-7, a hybrid molecule originated from chemical screening, that contains two functional modules derived from a synthetic scaffold and a core component of strigolactones. Cooperative action of these modules in the activation of a high-affinity strigolactone receptor ShHTL7 allows sphynolactone-7 to provoke Striga germination with potency in the femtomolar range. We demonstrate that sphynolactone-7 is effective for reducing Striga parasitism without impinging on host strigolactone-related processes.

Original languageEnglish
Pages (from-to)1301-1305
Number of pages5
JournalScience
Volume362
Issue number6420
DOIs
StatePublished - Dec 14 2018

Funding

FundersFunder number
Japan Society for the Promotion of Science17J05519

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