The <i>MLO1</i> powdery mildew susceptibility gene in <i>Lathyrus</i> species: The power of high‐density linkage maps in comparative mapping and synteny analysis

Powdery mildews are major diseases for a range of crops. The loss function specific Mildew Locus O (MLO) genes has long been associated with pre-haustorial plant resistance to powdery mildew and proven be durable in several species. Erysiphe pisi is the causal agent pea (Pisum sativum L.) closely related Lathyrus sativus L. cicera PsMLO1 extensively studied pea. However, no MLO gene family members have isolated characterized species so far. In this study, MLO1 were genotypes varied levels partial against mildew. Phylogenetic analyses confirmed that belongs Clade V, like all dicot proteins susceptibility. A recombinant inbred line population (RIL) was genotyped by sequencing develop high-density genetic linkage map. DNA sequence polymorphisms between analyzed allowed location newly developed RIL Subsequent comparative mapping maps P. sativum, Lens culinaris Medik., Medicago truncatula Gaertn. reference genomes revealed important aspects conservation locus position overall chromosomal rearrangements occurring during legume evolution, relevance disease breeding programs.