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<p>One of the most important vegetables cum spices crops in the world, chilli crop is threatened by several environmental stressors, including high temperature. High ambient temperatures above 35&#xa0;°C are harmful, mainly during flowering and fruit set, adversely affecting photosynthetic efficiency, pollen viability, fertilization, and fruit development, ultimately leading to significant yield and quality losses. High temperature stress affects membrane stability, accelerates reactive oxygen species (ROS) production, and alters metabolic and hormonal balance in chilli plants. Unpredictable climatic patterns, which result in both gradual and sudden temperature rise along with higher intensity and duration, further worsen the impact of high temperature on crop. The development of high temperature tolerant chilli cultivars is important to fulfil the increasing demand for chilli at global level. This can be accomplished by understanding the pertinent physiological, biochemical, and molecular processes involved in high temperature stress response. These cellular adjustments assist in reducing the harmful consequences of high temperature stress. Genes or quantitative trait loci governing such stress responses are particularly of more interest to develop stress tolerant cultivars. The current review presents insights into the high temperature stress response in chilli through different molecular, biochemical, and physiological processes along with the progress in chilli improvement programmes using genetics and biotechnological approaches. In addition, advances in conventional breeding, marker-assisted selection, genomics, transcriptomics, and emerging genome-editing approaches are discussed in the context of developing high temperature tolerant chilli cultivars. By synthesizing chilli focused physiological, molecular, and breeding related studies within a single framework, this review advances current understanding of high temperature tolerance in chilli. The review also summarizes recent advances in chilli heat tolerance research, including QTL mapping, multi omics analysis, and emerging genome editing applications, while identifying existing gaps in trait validation and targeted improvement of high temperature tolerance.</p>

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Insight of high temperature stress in chilli (Capsicum annuum L.)

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月1日

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  • Indivar Prasad,
  • Chandroday Prakash Tiwari,
  • Suhas Gorakh Karkute,
  • Rajeev Kumar,
  • Vijay Bahadur Singh Chauhan,
  • Chhabi Nath Ram,
  • Aastik Jha,
  • Rajesh Kumar

摘要

One of the most important vegetables cum spices crops in the world, chilli crop is threatened by several environmental stressors, including high temperature. High ambient temperatures above 35 °C are harmful, mainly during flowering and fruit set, adversely affecting photosynthetic efficiency, pollen viability, fertilization, and fruit development, ultimately leading to significant yield and quality losses. High temperature stress affects membrane stability, accelerates reactive oxygen species (ROS) production, and alters metabolic and hormonal balance in chilli plants. Unpredictable climatic patterns, which result in both gradual and sudden temperature rise along with higher intensity and duration, further worsen the impact of high temperature on crop. The development of high temperature tolerant chilli cultivars is important to fulfil the increasing demand for chilli at global level. This can be accomplished by understanding the pertinent physiological, biochemical, and molecular processes involved in high temperature stress response. These cellular adjustments assist in reducing the harmful consequences of high temperature stress. Genes or quantitative trait loci governing such stress responses are particularly of more interest to develop stress tolerant cultivars. The current review presents insights into the high temperature stress response in chilli through different molecular, biochemical, and physiological processes along with the progress in chilli improvement programmes using genetics and biotechnological approaches. In addition, advances in conventional breeding, marker-assisted selection, genomics, transcriptomics, and emerging genome-editing approaches are discussed in the context of developing high temperature tolerant chilli cultivars. By synthesizing chilli focused physiological, molecular, and breeding related studies within a single framework, this review advances current understanding of high temperature tolerance in chilli. The review also summarizes recent advances in chilli heat tolerance research, including QTL mapping, multi omics analysis, and emerging genome editing applications, while identifying existing gaps in trait validation and targeted improvement of high temperature tolerance.