Inducción de la tolerancia contra el Virus del mosaico dorado del chile (PepGMV) en plantas de tomate (Solanum lycopersicum) micorrizadas con Rhizophagus intraradices

Abstract

The tomato is a crop spread worldwide with huge economic value, the production and commerce have been grow up in the last years. In Mexico 2010, this crop had a 2,277,791.43 tons production focus 32.9% in Sinaloa state. This crop is affected by bacteria, fungi, phytoplasms and virus. The genus Begomovirus is widespread in Mexico affecting horticultural crops. Thus viruses like Pepper golden mosaic virus (PepGMV) affect tomato crops. PepGMV has a bipartite genome and induce symptoms in tomato plants such: yellowing, distortion, flower abortion, etc. The arbuscular mycorrhiza fungi (AMF), has proved recently to induce tolerance to several pathogens. In this study, has been performed experiments to test whether mycorrhiza colonized tomato plants, show tolerance to Pepper golden mosaic virus compared to non-colonized plants. The data shows 100% colonization tomato plant´s with R. intraradices AM fungus. The infectivity of PepGMV in those plants was tested by biolistic procedure as a source to delivery viral DNA into the plant. The observed symptoms and plant production where statistical evaluated. The symptoms, where not different between treatments the replicative forms variety between and within mycorrhiza and not-mycorrhiza tomato plants. The buttons flowers and fruits where larger in mycorrhiza tomato plants than the rest of the treatments. Our findings suggest that AMF colonization of tomato plants induce tolerance against the bipartite begomovirus PepGMV.