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Relationship of symbionts primary and secondary of Bemisia tabaci species Middle East Asia Minor 1 with insecticide resistance and its role in the transmission of begomovirus and crinivirus

Grant number: 13/20693-0
Support Opportunities:Scholarships in Brazil - Post-Doctorate
Effective date (Start): December 01, 2013
Effective date (End): March 31, 2016
Field of knowledge:Agronomical Sciences - Agronomy - Plant Health
Principal Investigator:Marcelo Agenor Pavan
Grantee:Julio Massaharu Marubayashi
Host Institution: Faculdade de Ciências Agronômicas (FCA). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil


The whiteflies (Bemisia tabaci) are recognized as one of the most important pests of the century, mainly because they are vectors of begomoviruses. They are insects with high biological variability and intra-specific genetic and there are about 32 different species divided into 11 groups. These species of whitefly harbor bacteria in their body called first symbiotic Portiera aleyrodidarum and several secondary symbionts: Arsenophonus, Hamiltonella, Wolbachia, Cardinium, Fritschea, Rickettsia and Orientia-like organism (OLO). The association found between species of whitefly and secondary symbionts suggest, a possible contribution of these bacteria to confer characteristics such as resistance insecticide, host range, virus transmission and thermal tolerance. This work aims to establish several colonies of whiteflies, with different combinations of secondary symbionts, evaluate the potential for transmission of begomovirus and crinivirus and resistance to these insecticides with different combinations of secondary symbionts. (AU)

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