Genetius

The study reports the creation and validation of a high‑density Axiom SNP array for Solanum tuberosum, based on 10X Genomics sequencing of 108 diverse clones and integration of existing Illumina markers. The array demonstrated high reproducibility and, after filtering, provided 206,616 informative markers for population structure analysis, GWAS of polyphenol oxidase activity, and genomic prediction with accuracies up to 0.86.

The study shows that the ERF transcription factor PTI5, previously identified as a susceptibility factor, is strongly induced during Bacillus subtilis biofilm establishment on potato roots and modulates ethylene‑dependent immune signaling. Silencing PTI5 enhances bacterial abundance and increases colonization by the arbuscular mycorrhizal fungus Rhizophagus irregularis, indicating PTI5 restricts both pathogenic and beneficial microbial interactions. These findings provide mechanistic insight for managing beneficial plant‑microbe relationships in crops.