Infection by the semi-persistently transmitted Tomato chlorosis virus alters the biology and behaviour of Bemisia tabaci on two potato clones

Author(s)

Pereira, L. S. ^[1] ; Lourencao, A. L. ^[1] ; Salas, F. J. S. ^[2] ; Bento, J. M. S. ^[3] ; Rezende, J. A. M. ^[4] ; Penaflor, V, M. F. G.

Affiliation

^[1] Ctr Fitossanidade, Inst Agron IAC, Av Barao Itapura 1481, BR-13020902 Campinas, SP - Brazil

^[2] Inst Biol, Lab Estudo Vetores, Av Conselheiro Rodrigues Alves 1-252, BR-04014900 Sao Paulo, SP - Brazil

^[3] Luiz de Queiroz Univ Sao Paulo ESALQ USP, Escola Super Agr, Dept Entomol & Acarol, Av Padua Dias 11, BR-13418900 Piracicaba, SP - Brazil

^[4] Luiz de Queiroz Univ Sao Paulo ESALQ USP, Escola Super Agr, Dept Fitopatol & Nematol, Av Padua Dias 11, BR-13418900 Piracicaba, SP - Brazil

• Document type: Journal article
• Source: BULLETIN OF ENTOMOLOGICAL RESEARCH; v. 109, n. 5, p. 604-611, OCT 2019.
• Web of Science Citations: 0

Abstract

Insect-borne plant viruses usually alter the interactions between host plant and insect vector in ways conducive to their transmission ('host manipulation hypothesis'). Most studies have tested this hypothesis with persistently and non-persistently transmitted viruses, while few have examined semi-persistently transmitted viruses. The crinivirus Tomato chlorosis virus (ToCV) is semi-persistently transmitted virus by whiteflies, and has been recently reported infecting potato plants in Brazil, where Bemisia tabaci Middle East Asia Minor 1 (MEAM1) is a competent vector. We investigated how ToCV infection modifies the interaction between potato plants and B. tabaci in ways that increase the likelihood of ToCV transmission, in two clones, one susceptible ('Agata') and the other moderately resistant (Bach-4) to B. tabaci. Whiteflies alighted and laid more eggs on ToCV-infected plants than mock-inoculated plants of Bach-4. When non-viruliferous whiteflies were released on ToCV-infected plants near mock-inoculated plants, adults moved more intensely towards non-infected plants than in the reverse condition for both clones. Feeding on ToCV-infected plants reduced egg-incubation period in both clones, but the egg-adult cycle was similar for whiteflies fed on ToCV-infected and mock-inoculated plants. Our results demonstrated that ToCV infection in potato plants alters B. tabaci behaviour and development in distinct ways depending on the host clone, with potential implications for ToCV spread. (AU)

• FAPESP's process: 12/51771-4 - Begomovirus and Crinivirus in Solanaceae: molecular epidemiology and management strategies
• Grantee: Jorge Alberto Marques Rezende
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 08/57701-2 - Technological bases for identification, synthesis and use of semiochemicals in agriculture
• Grantee: José Roberto Postali Parra
• Support Opportunities: Research Projects - Thematic Grants