Journal
MICROORGANISMS
Volume 9, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/microorganisms9040692
Keywords
Arabidopsis thaliana; Cucumber mosaic virus; genome-wide association studies; plant– virus interaction; seed transmission; virulence
Categories
Funding
- Plan Nacional I + D + i, Ministerio de Economia y Competitividad (Agencia Nacional de Investigacion), Spain [PID2019-109579RB-I00]
- Ministerio de Economia y Competitividad (Instituto de Salud Carlos III) [PIE13/00041]
- Severo Ochoa Program for Centres of Excellence in R&D from the Agencia Estatal de Investigacion of Spain (2017-2021) [SEV-2016-0672]
- Formacion de Personal Investigador contract from MINECO [BES-2017-080783]
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The study identified eight host genes associated with virulence in plant-virus interactions, shedding light on the genetic regulation of virulence and seed transmission of the virus. The results suggest that functions controlling virulence are also crucial for CMV transmission through seeds. This work provides evidence of a novel role for some previously known plant defense genes and for cell wall metabolism in plant virus interactions.
Virulence, the effect of pathogen infection on progeny production, is a major determinant of host and pathogen fitness as it affects host fecundity and pathogen transmission. In plant-virus interactions, ample evidence indicates that virulence is genetically controlled by both partners. However, the host genetic determinants are poorly understood. Through a genome-wide association study (GWAS) of 154 Arabidopsis thaliana genotypes infected by Cucumber mosaic virus (CMV), we identified eight host genes associated with virulence, most of them involved in response to biotic stresses and in cell wall biogenesis in plant reproductive structures. Given that virulence is a main determinant of the efficiency of plant virus seed transmission, we explored the link between this trait and the genetic regulation of virulence. Our results suggest that the same functions that control virulence are also important for CMV transmission through seeds. In sum, this work provides evidence of a novel role for some previously known plant defense genes and for the cell wall metabolism in plant virus interactions.
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