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<p>The <i>pathogenesis-related protein 5</i>(<i>PR-5</i>) gene family is implicated in various biological processes within plants. To facilitate the development of resistant potato varieties, it is imperative to elucidate the molecular defense mechanisms against the <i>Phytophthora infestans</i> pathogen, with particular emphasis on the <i>pathogenesis-related (PR)</i> gene family, specifically <i>PR-5</i>. In this study, we conducted a comprehensive genome-wide analysis of the <i>PR-5</i> gene family in potatoes and examined their expression patterns during <i>P. infestans</i> infection. Utilizing bioinformatics tools and high-throughput sequencing methodologies, we successfully identified and validated the role of the <i>PR-5</i> gene family within the potato genome. Additionally, phylogenetic analysis provided insights into the evolutionary relationships among these genes, suggesting potential functional diversification. RNA sequencing data indicated an upregulation of several <i>PR-5</i> genes upon infection with <i>P. infestans</i>, underscoring their involvement in the plant's defense response against the pathogen. By identifying gene targets associated with late blight resistance, we have laid a foundation for future research on plant-pathogen interactions and disease resistance in potatoes. This knowledge will support the development of molecular breeding and genetic engineering strategies. Furthermore, our extensive genome-wide analysis and high-throughput expression profiling of the <i>PR-5</i> gene family in potato has uncovered a novel mechanism for understanding plant defense at multiple levels. This research contributes significantly to sustainable agriculture and the advancement of resistance to <i>P. infestans</i> in potato.</p>

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The role of PR-5 genes in mediating resistance to Phytophthora infestans and abiotic stress tolerance in potato

  • 期刊论文

  • 发表日期：

    2026年1月27日

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  • Madiha Zaynab,
  • Rashid Al-Yahyai,
  • Monther Sadder,
  • Mohammed Albaqami

摘要

The pathogenesis-related protein 5(PR-5) gene family is implicated in various biological processes within plants. To facilitate the development of resistant potato varieties, it is imperative to elucidate the molecular defense mechanisms against the Phytophthora infestans pathogen, with particular emphasis on the pathogenesis-related (PR) gene family, specifically PR-5. In this study, we conducted a comprehensive genome-wide analysis of the PR-5 gene family in potatoes and examined their expression patterns during P. infestans infection. Utilizing bioinformatics tools and high-throughput sequencing methodologies, we successfully identified and validated the role of the PR-5 gene family within the potato genome. Additionally, phylogenetic analysis provided insights into the evolutionary relationships among these genes, suggesting potential functional diversification. RNA sequencing data indicated an upregulation of several PR-5 genes upon infection with P. infestans, underscoring their involvement in the plant's defense response against the pathogen. By identifying gene targets associated with late blight resistance, we have laid a foundation for future research on plant-pathogen interactions and disease resistance in potatoes. This knowledge will support the development of molecular breeding and genetic engineering strategies. Furthermore, our extensive genome-wide analysis and high-throughput expression profiling of the PR-5 gene family in potato has uncovered a novel mechanism for understanding plant defense at multiple levels. This research contributes significantly to sustainable agriculture and the advancement of resistance to P. infestans in potato.