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<p>Brown planthopper (BPH) is considered to be affecting rice production. This pest employs diverse feeding strategies, making it difficult to control. However, rice plants have evolved an array of defense mechanisms such as physical barriers, chemical defenses, and induced volatile compounds to combat BPH infestations. In turn, BPH reacts with the plant host by triggering anti-defensive salivary secretions and metabolic pathways for non expression or detoxification of host toxic metabolites. It is intriguing to note that planthopper populations from different regions differ in their responses to rice varieties with the same resistance genes. This comprehensive review focuses on the mechanisms of resistance developed by rice plants against this devastating pest, exploring host plant antibiosis, antixenosis and tolerance, as well as the counter responses evolved and exhibited by BPH towards the rice genotypes possessing such resistance mechanisms and highlighting the importance of understanding the complex interplay between BPH and rice plants for sustainable rice production. Thus this extensive insight would enlighten the conventional or molecular rice breeders about the scope, sustainability and longevity of these resistance mechanisms engineered into rice DNA using pyramided or edited defensive genes in protecting itself from this ever-evolving pest.</p>

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Plant defense versus pest defense – a case study with Oryza sativa L. and Nilaparvata lugens Stal.

  • 期刊论文

  • 发表日期：

    2025年8月28日

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  • Sheela Venugopal,
  • Bodireddy Thornavalli,
  • R. P. Soundararajan,
  • V. Baskaran,
  • M. Alagar,
  • P. Anandhi,
  • S. Mohankumar,
  • S. Manonmani

摘要

Brown planthopper (BPH) is considered to be affecting rice production. This pest employs diverse feeding strategies, making it difficult to control. However, rice plants have evolved an array of defense mechanisms such as physical barriers, chemical defenses, and induced volatile compounds to combat BPH infestations. In turn, BPH reacts with the plant host by triggering anti-defensive salivary secretions and metabolic pathways for non expression or detoxification of host toxic metabolites. It is intriguing to note that planthopper populations from different regions differ in their responses to rice varieties with the same resistance genes. This comprehensive review focuses on the mechanisms of resistance developed by rice plants against this devastating pest, exploring host plant antibiosis, antixenosis and tolerance, as well as the counter responses evolved and exhibited by BPH towards the rice genotypes possessing such resistance mechanisms and highlighting the importance of understanding the complex interplay between BPH and rice plants for sustainable rice production. Thus this extensive insight would enlighten the conventional or molecular rice breeders about the scope, sustainability and longevity of these resistance mechanisms engineered into rice DNA using pyramided or edited defensive genes in protecting itself from this ever-evolving pest.