Orobanche cumana KAI2d2 mediates perception of dehydrocostus lactone and strigolactones and is inhibited by triazole ureas

Key Points

• This research aims to understand how the KAI2d2 receptor in Orobanche cumana mediates germination signals from specific ligands.
• Examined the interaction of KAI2d2 with strigolactones and dehydrocostus lactone.
• Evaluated the effects of triazole urea compounds on KAI2d receptors and their impact on Orobanche cumana germination.
• Investigated the influence of these compounds on sunflower growth.
• KAI2d2 effectively perceives both strigolactones and dehydrocostus lactone through different mechanisms.
• Triazole urea compounds inhibit KAI2d receptors, significantly reducing seed germination rates.
• Sunflower growth remains unaffected despite KAI2d inhibition.