Data from: Comparative Analysis Reveals Genomic Characteristics in <i>R-genes</i> for HLB Resistance in Wild Australian Limes

Huanglongbing (HLB) is a devastating citrus disease that threatens the citrus industry globally. HLB is associated with the bacteria <i>Candidatus </i>Liberibacter asiaticus (<i>C</i>Las) and lacks tools for economically viable disease management. Previous field evaluation of citrus germplasm identified Australian wild limes as naturally tolerant/resistant to HLB. The resistance was hypothesized to be conferred by resistance genes (<i>R-genes</i>), the products of which mediate pathogen-specific defense responses. To gain insight into the mechanisms underlying HLB-resistance on the genomic level, we annotated and characterized the <i>R-genes</i> in the genomes of five citrus species with different HLB-resistance levels. Among these species, three were wild Australian limes rated as HLB-resistant (<i>Citrus glauca</i>) and HLB-tolerant (<i>C. australasica </i>and<i> C. inodora</i>), and two were cultivated species (<i>C. clementina</i> and <i>C. sinensis</i>) both rated as susceptible.