Towards gene editing strategy to broomrape resistance
Year: 2026
Type: conference-paper
Abstract: The development of sunflower genotypes genetically resistant to the broomrape (Orobanche cumana Wallr.) is one of the most important tasks facing sunflower breeders. In this regard, a more complete understanding of the molecular mechanisms underlying sunflower resistance to broomrape should enable the development of sunflower genotypes, with multiplex resistance to broomrape, using genome editing technology. Wild Helianthus species represent a crucial reservoir of genetic diversity for resistance to O. cumana, providing both race-specific and quantitative resistance mechanisms that are essential for the development of resistant sunflower genotypes under evolving parasite pressure and changing environmental conditions. Considering the diverse mechanisms for preventing broomrape development including reduced germination stimulation, impaired haustorial attachment, and incompatible attachment (post-haustorial protection), recent advances in gene editing, particularly CRISPR/Cas9 based technologies, provide new opportunities to identify, validate, and deploy resistance associated genes derived from wild Helianthus species with high precision and efficiency. Resistance mechanisms from wild relatives, such as altered strigolactone biosynthesis, enhanced root structural barriers, and activation of localized defense responses, can be targeted either through direct introgression or functional validation using genome editing approaches. Gene editing enables the modification of susceptibility genes, modifying specific parasitism-related genes, and stacking of multiple resistance mechanisms within elite sunflower backgrounds.
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: green
OpenAlex ID: W7166407747
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