Plant Virus Resistance—2nd Edition

A special issue of Viruses (ISSN 1999-4915). This special issue belongs to the section "Viruses of Plants, Fungi and Protozoa".

Deadline for manuscript submissions: 31 December 2026 | Viewed by 1511

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Centro de Edafología y Biología Aplicada del Segura (CEBAS)—Consejo Superior de Investigaciones Científicas (CSIC), Campus Universitario de Espinardo, Edificio 25, 30100 Murcia, Spain
Interests: plant pathogenic viruses; viral and host mRNAs; viral factories; emergent plant viruses
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Dear Colleagues,

Viruses are responsible for a significant number of threats to plant health in agriculture, including many emerging crop diseases. The measures available to control viruses in crops are limited and often ineffective, making viruses a major cause of economic losses. Control methods for virus-induced diseases primarily rely on preventing vector transmission, applying hygienic practices during the propagation of plant material and cultivation, and using resistant varieties. Among these, the use of resistant varieties is undoubtedly the most advantageous, as it offers effective protection throughout the growing season without requiring additional input from the grower, and it is both environmentally friendly and safe for consumers. However, sources of genetic resistance are limited and can sometimes lose effectiveness due to the expansion of virus populations capable of overcoming them. Research in plant virus resistance includes but is not limited to the following: (i) identifying new sources of resistance and the underlying molecular mechanisms, (ii) identifying and characterizing resistance-breaking mechanisms, (iii) discovering new molecular targets for breeding resistant crop varieties using advanced tools such as genome editing, and (iv) analyzing the ecological and evolutionary factors that influence resistance durability.

Prof. Dr. Miguel A. Aranda
Guest Editor

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Keywords

  • plant virus resistance mechanisms
  • resistance-breaking viral strains
  • genetic and molecular breeding
  • virus–host interactions
  • genome editing
  • virus susceptibility factors
  • plant virus ecology
  • plant virus host range

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Published Papers (1 paper)

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Research

17 pages, 1136 KB  
Article
Polymorphisms for Defence and Virulence in the Arabidopsis thalianaCucumber mosaic virus Interaction Are Expressed in the Host’s Native Habitat
by Israel Pagán, Rafael de Andrés-Torán, Nuria Montes, Aurora Fraile and Fernando García-Arenal
Viruses 2026, 18(5), 494; https://doi.org/10.3390/v18050494 - 23 Apr 2026
Viewed by 1131
Abstract
Plant defences are assumed to evolve in response to the negative effects of virus infection on plant fitness (virulence), and to drive plant–virus coevolution. However, viruses are not always antagonistic symbionts of plants, and the expression of defence traits is environment-dependent. Thus, understanding [...] Read more.
Plant defences are assumed to evolve in response to the negative effects of virus infection on plant fitness (virulence), and to drive plant–virus coevolution. However, viruses are not always antagonistic symbionts of plants, and the expression of defence traits is environment-dependent. Thus, understanding plant–virus interactions requires analysing the expression of defence traits in the host’s native habitat. Here we analyse the effect of cucumber mosaic virus (CMV) infection, and the expression of resistance and tolerance in the native habitat of a wild Arabidopsis thaliana population. Plants from ten genotypes from that population, which have been shown to differ in resistance and tolerance to CMV in a greenhouse, were inoculated with an Arabidopsis isolate of CMV and transplanted to their habitat. Resistance was rated based on virus accumulation in leaves, and tolerance was rated based on the effect of infection on plant fecundity relative to virus accumulation. Consistent with the greenhouse assays, virulence depended on the host genotype, and polymorphisms for resistance and tolerance were expressed in the field, supporting the validity of the conclusions from the greenhouse assays. Our results also support theoretical predictions on the relationships between pathogen multiplication and virulence and between resistance and tolerance. Full article
(This article belongs to the Special Issue Plant Virus Resistance—2nd Edition)
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