In Brazil, begomoviruses are considered one of the most important pathogen in tomato crop. Several begomoviruses can infect tomato in the country. However, tomato severe rugose virus (ToSRV), transmitted by Bemisia tabaci MEAM1 (biotype B), in a persistent circulatory way, is predominant. Besides tomato, this begomovirus infects plants of other solanaceae and weeds. The question remains unanswered as the main source of ToSRV inoculum in the field. The conceptual model that is being applied is the existence of amplifier hosts. This model is already recognized in the study of epidemics of zoonoses, but has never been applied to the study of plant diseases. The hypothesis is that in the absence of tomato plants in the field, ToSRV asymptomatic hosts and the vector would function as amplifiers of the pathogen. Thus, the main objective of this project will be the identification of possible source (s) of ToSRV in the field and propose sustainable alternatives for the management, not only of begomoviruses, but other vector-borne diseases.
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