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<p>The nucleotide binding site-leucine rich repeat (NBS-LRR) gene family is widely recognized for playing prominent role in plant defence against diverse pathogens. One such member, <i>StTNLC7G2T1</i> (<i>PGSC0003DMC400041857</i>) from the cultivated potato (<i>Solanum</i> <i>tuberosum</i>) variety Kufri Jyoti was functionally characterized to investigate its role in plant immunity. Transgenic <i>Arabidopsis</i> plants were raised expressing <i>StTNLC7G2T1</i> (<i>OEStTNLC7G2T1</i>) exhibiting significantly enhanced resistance to fungal pathogen <i>Alternaria</i> <i>brassicicola</i> and bacterial pathogen <i>Pseudomonas</i> <i>syringae</i> pv. tomato DC3000. Compared to wild-type (Col-0) plants, these transgenic lines showed induced callose deposition at infection sites, suggesting a strengthened cell wall-mediated defence response. The <i>OEStTNLC7G2T1</i> plants maintained photosynthetic efficiency under pathogen attack, potentially contributing to improved overall plant health and resilience. The transcript expression patterns revealed significant modulation of genes associated with Salicylic acid (SA) and Jasmonic acid (JA) mediated defence responses (<i>PR1</i>, <i>PR2</i>, <i>NPR1</i>, <i>VSP2</i>, <i>PDF1.</i>2 and <i>MYC2</i>), indicating that <i>StTNLC7G2T1</i> may enhance plant immunity by influencing hormone signaling pathways. The observed increase in callose accumulation and the expression profile of select genes revealed that transgenic <i>StTNLC7G2T1</i> confers pathogen-triggered immunity in <i>Arabidopsis</i> via enhanced basal defense.</p>

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The StTNLC7G2T1 enhances resistance to biotic stress in Arabidopsis via pathogen triggered immunity

  • 期刊论文

  • 发表日期：

    2025年11月11日

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  • Namo Dubey,
  • L. Mathan,
  • Sidharth Patidar,
  • Kunal Singh

摘要

The nucleotide binding site-leucine rich repeat (NBS-LRR) gene family is widely recognized for playing prominent role in plant defence against diverse pathogens. One such member, StTNLC7G2T1 (PGSC0003DMC400041857) from the cultivated potato (Solanum tuberosum) variety Kufri Jyoti was functionally characterized to investigate its role in plant immunity. Transgenic Arabidopsis plants were raised expressing StTNLC7G2T1 (OEStTNLC7G2T1) exhibiting significantly enhanced resistance to fungal pathogen Alternaria brassicicola and bacterial pathogen Pseudomonas syringae pv. tomato DC3000. Compared to wild-type (Col-0) plants, these transgenic lines showed induced callose deposition at infection sites, suggesting a strengthened cell wall-mediated defence response. The OEStTNLC7G2T1 plants maintained photosynthetic efficiency under pathogen attack, potentially contributing to improved overall plant health and resilience. The transcript expression patterns revealed significant modulation of genes associated with Salicylic acid (SA) and Jasmonic acid (JA) mediated defence responses (PR1, PR2, NPR1, VSP2, PDF1.2 and MYC2), indicating that StTNLC7G2T1 may enhance plant immunity by influencing hormone signaling pathways. The observed increase in callose accumulation and the expression profile of select genes revealed that transgenic StTNLC7G2T1 confers pathogen-triggered immunity in Arabidopsis via enhanced basal defense.