Abstract
The role of host factors in plant viral diseases is not well understood. To study this important aspect of plant–pathogen interaction, we identified anArabidopsis thalianamutant, designatedvid1(virus-inducibledwarf), with altered responses to viral infection. Specifically,vid1resembled the wild-type plants when healthy but developed a severely dwarfed phenotype with a loss of apical dominance following infection by a tobamovirus. Genetic segregation showed that thevid1phenotype is caused by a recessive mutation in a single gene. Since systemic viral infection is thought to interfere with the host plant intercellular transport, we propose that thevid1mutation affects this transport process. Combination of the mutation and viral infection may disrupt transport of developmental regulators, such as hormones, causing formation of thevid1phenotype. Indeed, the effect ofvid1mutation was repressed by exogenous application of a plant hormone auxin. Potentially, thevid1mutant will help characterize the mechanism of virus–plant interaction and formation of plant viral disease symptoms.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
