Abscisic-acid-responsive induces StPRL expression to increase potato resistance to infection.

Late blight, caused by , is one of the most serious diseases affecting potatoes ( L.). Long non-coding RNAs (lncRNAs) are transcripts with a length of more than 200 nucleotides that have no protein-coding potential. Few studies have been conducted on lncRNAs related to plant immune regulation in plants, and the molecular mechanisms involved in this regulation require further investigation. We identified and screened an lncRNA that specifically responds to infection, namely, . infection activates the abscisic acid (ABA) pathway, and ABA induces to enhance potato resistance to . positively regulates the expression of its co-expressed PR-related gene . StPRL promotes the accumulation of reactive oxygen species and transmits a resistance response by affecting the salicylic acid hormone pathway, thereby enhancing potato resistance to . In summary, we identified the potato late blight resistance lncRNA and revealed its upstream and downstream regulatory relationship of . These results improve our understanding of plant-pathogen interactions' immune mechanism and elucidate the response mechanism of lncRNA-target genes regulating potato resistance to infection.