Genetic and physiological characterization of sunflower resistance provided by the wild-derived Or_Deb2 gene against highly virulent races of Orobanche cumana Wallr.

ABSTRACT:

Key message

Or_Deb2 confers post-attachment resistance to Orobanche cumana and is located in a 1.38 Mbp genomic interval containing a cluster of receptor-like kinase and receptor-like protein genes with nine high-confidence candidates. Sunflower broomrape is a holoparasitic angiosperm that parasitizes on sunflower roots, severely constraining crop yield. Breeding for resistance is the most effective method of control. Or_Deb2 is a dominant resistance gene introgressed into cultivated sunflower from a wild-related species that confers resistance to highly virulent broomrape races. The objectives of this study were as follows: (i) locate Or_Deb2 into the sunflower genome and determine putative candidate genes and (ii) characterize its underlying resistan

SUBMITTER: Fernandez-Aparicio M 

PROVIDER: S-EPMC8866362 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature