articlePLANT PHYSIOLOGYSep 23, 2005BRONZE OA

The Strigolactone Germination Stimulants of the Plant-Parasitic Striga and Orobanche spp. Are Derived from the Carotenoid Pathway

RMRadoslava MatúšováKRKumkum RaniFVFrancel VerstappenMCMaurice C. R. FranssenMHMichael H. Beale

Slovak Academy of Sciences · Rothamsted Research · +2 more institutions

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Abstract

The seeds of parasitic plants of the genera Striga and Orobanche will only germinate after induction by a chemical signal exuded from the roots of their host. Up to now, several of these germination stimulants have been isolated and identified in the root exudates of a series of host plants of both Orobanche and Striga spp. In most cases, the compounds were shown to be isoprenoid and belong to one chemical class, collectively called the strigolactones, and suggested by many authors to be sesquiterpene lactones. However, this classification was never proven; hence, the biosynthetic pathways of the germination stimulants are unknown. We have used carotenoid mutants of maize (Zea mays) and inhibitors of…

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Topics & keywords

Topics
Keywords
  • Striga
  • Striga hermonthica
  • Orobanche
  • Strigolactone
  • Biology
  • Germination
  • Parasitic plant
  • Orobanchaceae
UN Sustainable Development Goals
  • Life in Land
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