Main drivers of broomrape regulation. A review

We reviewed all the possible interactions of Orobanchaceae species with surrounding organisms in an agricultural landscape, with a focus on the Orobanche and Phelipanche genera

Dïnia Cartry; Christian Steinberg; Stéphanie Gibot-Leclerc

2021

Scholarcy highlights

  • Orobanchaceae—broomrapes—are a family of parasitic plants that represent an ecological and agronomic challenge because some of them cause significant damage to many monocots or dicots
  • Weedy broomrapes infest different crops in the Mediterranean basin, leading to substantial yield losses. They quickly adapt to new host plants, so that new crops are more and more under threat
  • Control methods are lacking because as plant parasites they cannot be considered as a common weed in agriculture
  • It is important to characterize the main drivers of their regulation to identify sustainable management strategies
  • Our main findings are that broomrapes successfully co-evolve with their host through tight interactions ranging from the molecular to the tissue level, resulting in a unique strategy in their interactions with their host; broomrapes have to face natural regulatory mechanisms such as host plant defenses, allelopathic interferences, and pest attacks from both the rhizosphere and phyllosphere; alternative methods combining these natural mechanisms with existing conventional methods should be used to control broomrape
  • Combining different control methods needs to be considered in an integrated weed management system
  • Modeling approaches would help predict the evolution of broomrape-infested plots and the available potential management strategies

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