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<p>The nonexpressor of pathogenesis-related 1 (<i>NPR1</i>) is the salicylic acid (SA) receptor, which plays an important regulatory role in plant immunity. However, the <i>NPR1-</i>like gene family in maize has not been comprehensively identified and analysed. In the present study, we identified gene structures, conserved motifs, <i>cis</i>-elements, and expression patterns in different tissues and organs, and under biotic and abiotic stresses. The <i>NPR1</i>-like proteins of different species are highly conserved during evolution. Many <i>cis</i>-acting elements have been identified in the promoter region of <i>NPR1-</i>like genes in maize, including elements that respond to growth and development, biotic and abiotic stresses, and plant hormones. Furthermore, the transcript abundance of all <i>NPR1-</i>like genes in maize changed significantly under abiotic treatments (cold, heat, salt, or drought treatments), phytohormone treatments and pathogen treatment (<i>Ustilago maydis</i>), indicating that they might be involved in biotic and abiotic stresses. In addition, <i>ZmNPR1</i> is located in the cytoplasm, and overexpression of <i>ZmNPR1</i> improves the resistance of maize plants to <i>U. maydis</i>. The findings of the present study might provide important information on understanding the complexity of the <i>NPR1-</i>like genes and their functions in maize.</p>

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Characterization and expression patterns of the NPR1-like genes in maize

  • 期刊论文

  • 发表日期：

    2025年3月19日

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  • Wenlan Li,
  • Xinwei Hou,
  • Zhaodong Meng,
  • Runqing Yue

摘要

The nonexpressor of pathogenesis-related 1 (NPR1) is the salicylic acid (SA) receptor, which plays an important regulatory role in plant immunity. However, the NPR1-like gene family in maize has not been comprehensively identified and analysed. In the present study, we identified gene structures, conserved motifs, cis-elements, and expression patterns in different tissues and organs, and under biotic and abiotic stresses. The NPR1-like proteins of different species are highly conserved during evolution. Many cis-acting elements have been identified in the promoter region of NPR1-like genes in maize, including elements that respond to growth and development, biotic and abiotic stresses, and plant hormones. Furthermore, the transcript abundance of all NPR1-like genes in maize changed significantly under abiotic treatments (cold, heat, salt, or drought treatments), phytohormone treatments and pathogen treatment (Ustilago maydis), indicating that they might be involved in biotic and abiotic stresses. In addition, ZmNPR1 is located in the cytoplasm, and overexpression of ZmNPR1 improves the resistance of maize plants to U. maydis. The findings of the present study might provide important information on understanding the complexity of the NPR1-like genes and their functions in maize.