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<p>Rice-<i>Magnaporthe oryzae</i> interaction is a well-known model for studying hemibiotrophic plant-pathogen interactions. Molecular evidences accumulated over decades suggest, success of <i>M. oryzae</i> infection in rice is not only driven by its own genes but also by an array of rice genes that support pathogenicity. These host-genes which predispose the host towards susceptibility to any pathogen infection are typically termed as susceptibility genes. A time-course transcriptome profiling of compatible rice – <i>Magnaporthe oryzae</i> interaction can catalog potential blast susceptibility genes in rice. In this study, we have analyzed differentially expressed genes (DEGs) in a susceptible rice cultivar HR-12 at four time points, viz. 12-, 24-, 48-, and 72-hours post inoculation (hpi) with <i>M. oryzae</i> strain Mo-ei-11. Our study indicates the existence of several potential susceptibility genes based on their continuous and/or gradual high-fold upregulation following <i>M. oryzae</i> infection. These genes are involved in various pathways related to host primary metabolism, signal transduction, transcription factors etc. Among these genes, a few candidates <i>viz. OsSWEET2b</i>, <i>OsFLR14</i> and a set of four <i>OsRALF</i>s, and six <i>OsWRKYs</i> might be really interesting for further study given their known pedigree in conditioning susceptibility in different hosts during pathogen invasion. An in-depth investigation regarding their roles in conditioning susceptibility of rice to <i>M. oryzae</i> might help gaining novel insights in future.</p>

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Identification of potential genes for susceptibility in rice-Magnaporthe oryzae interaction

  • 期刊论文

  • 发表日期：

    2025年9月16日

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  • Joshitha Vijayan,
  • Soham Ray,
  • Sourabh Kumar Jain,
  • Priyanka Jain,
  • Nagendra Kumar Singh,
  • Tilak Raj Sharma

摘要

Rice-Magnaporthe oryzae interaction is a well-known model for studying hemibiotrophic plant-pathogen interactions. Molecular evidences accumulated over decades suggest, success of M. oryzae infection in rice is not only driven by its own genes but also by an array of rice genes that support pathogenicity. These host-genes which predispose the host towards susceptibility to any pathogen infection are typically termed as susceptibility genes. A time-course transcriptome profiling of compatible rice – Magnaporthe oryzae interaction can catalog potential blast susceptibility genes in rice. In this study, we have analyzed differentially expressed genes (DEGs) in a susceptible rice cultivar HR-12 at four time points, viz. 12-, 24-, 48-, and 72-hours post inoculation (hpi) with M. oryzae strain Mo-ei-11. Our study indicates the existence of several potential susceptibility genes based on their continuous and/or gradual high-fold upregulation following M. oryzae infection. These genes are involved in various pathways related to host primary metabolism, signal transduction, transcription factors etc. Among these genes, a few candidates viz. OsSWEET2b, OsFLR14 and a set of four OsRALFs, and six OsWRKYs might be really interesting for further study given their known pedigree in conditioning susceptibility in different hosts during pathogen invasion. An in-depth investigation regarding their roles in conditioning susceptibility of rice to M. oryzae might help gaining novel insights in future.