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Updated: Sep 16, 2025
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VIGS-Mediated Forward Genetics Screening for Identification of Genes Involved in Nonhost Resistance
Published on: August 23, 2013
17.2K
Host Plant Resistance: Is It Time for a New Model?
1Dept of Entomology, Federal Univ of Lavras (UFLA), Lavras, MG, Brazil. brunosouza@ufla.br.
Neotropical Entomology
|July 10, 2025
Summary
Standardizing host plant resistance (HPR) terminology is crucial for effective integrated pest management. This review clarifies HPR definitions and proposes a model for practical application by farmers and scientists.
Area of Science:
- Entomology
- Plant Breeding
- Integrated Pest Management
Background:
- Host plant resistance (HPR) is vital for integrated pest management (IPM).
- Accurate terminology is essential for communicating the effectiveness of resistant crop varieties to stakeholders.
- Current HPR terminology lacks standardization, potentially hindering the adoption of resistant varieties.
Purpose of the Study:
- To review and clarify existing host plant resistance terminologies.
- To identify research gaps in understanding and applying HPR.
- To propose a standardized concept of resistant varieties for practical use.
Main Methods:
- Literature review of HPR terminology in entomological research.
- Analysis of classical (trichotomous) and recent (sichotomous) HPR models.
- Discussion of constitutive vs. induced and direct vs. indirect resistance concepts.
Main Results:
- Two primary HPR terminology models exist: trichotomous (antixenosis, antibiosis, tolerance) and sichotomous (resistance vs. tolerance, incorporating constitutive/induced and direct/indirect resistance).
- Limited information on insect resistance levels is available on commercial seed labels, except for Bt varieties.
- Unstandardized terms cause confusion and impede the effective use of resistant varieties.
Conclusions:
- Standardized HPR terminology is necessary for clear communication and effective implementation in IPM.
- A proposed HPR defense-growth model aims to provide a practical framework for defining resistant varieties.
- Adoption of clear terminology will benefit farmers, extension services, and researchers.
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