We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
DIFFERENTIAL EXPRESSION OF MYB33 AND AP2 GENES AND RESPONSE OF TY RESISTANT PLANTS TO BEET CURLY TOP IRAN VIRUS INFECTION IN TOMATO.
- Authors
Ghanbari, M.; Eini, O.; Ebrahimi, S.
- Abstract
Beet curly top Iran virus (BCTIV) is a member of genus Becurtovirus, family Geminiviridae, which constrains host crop production in various geographical regions in Iran. This virus causes significant crop loss in sugar beet and has been also reported from other hosts including tomato. Various plant factors such as resistance genes and microRNA pathways were found to be involved in plant-geminivirus interaction. Ty resistant hybrids were found to confer resistance to both monopartite and bipartite begomoviruses through increasing cytosine methylation of the viral genome. In this study we investigated the response of various tomato cultivars and Ty resistant hybrids to BCTIV infection. In addition, the effect of the virus on the regulation of microRNA target genes in plant development was investigated. Based on the evaluated disease severity index and coefficient of infection, Ty resistant hybrids were grouped as moderately susceptible plants and produced leaf curling symptoms after BCTIV infection. However, no clear symptom was observed in the cultivar Super Chief. In addition, a significantly lower level of virus accumulation was observed in Super Chief plants compared to the susceptible cultivar, Grosse Lisse. Expression analysis of miRNA target genes in infected plants showed that AGO1 was induced in both cultivars. However, MYB33 and AP2 were differentially regulated in the susceptible and moderately resistant cultivars. The importance of regulation of these miRNA target genes in viral symptom development is discussed.
- Subjects
IRAN; GENE expression in plants; BEET curly top virus; TOMATO diseases &; pests; PLANT resistance to viruses; MICRORNA; PLANT genes
- Publication
Journal of Plant Pathology, 2016, Vol 98, Issue 3, p555
- ISSN
1125-4653
- Publication type
Article