CAT and infection: A detailed transcriptome analysis of Rs provides the experimental proof that genes encoding T3SS (hrpY, hrpX, hrpK, and hrcT) and T4P (pilG, pilH, pilN, pilM, pilY, pilW, and fimV) are upregulated during host infection, along with peroxidases, catalases (katE and katG), and alkyl hydroperoxide reductases (ahpC1 and ahpF), suggesting adaptations to combat stress during plant infection [66].