Exploitation of natural genetic diversity to study plant-virus interactions: what can we learn from <em>Arabidopsis thaliana</em>?
2013
Ouibrahim, Laurence | Caranta, Carole
The development and use of cultivars that are genetically resistant to viruses is an efficient strategy to tackle the problems of virus diseases. Over the past two decades, the model plant <em>Arabidopsis thaliana</em> has been documented as a host for a broad range of viral species, providing access to a large panel of resources and tools for the study of viral infection processes and resistance mechanisms. Exploration of its natural genetic diversity has revealed a wide range of genes conferring virus resistance. The molecular characterization of some of these genes has unveiled resistance mechanisms distinct from those described in crops. In these respects, <em>Arabidopsis</em> represents a rich and largely untapped source of new genes and mechanisms involved in virus resistance. Here, we review the current status of our knowledge concerning natural virus resistance in <em>Arabidopsis</em>. We also address the impact of environmental conditions on <em>Arabidopsis</em>-virus interactions and resistance mechanisms, and discuss the potential of applying the knowledge gained from the study of <em>Arabidopsis</em> natural diversity for crop improvement.
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