Tomato severe rugose virus: potential of susceptible species as source of virus inoculum, vertical and horizontal transmission by B. tabaci MEAM1 and selection of mild strains for pre-immunization in tomato

• Grant number: 18/01633-0
• Support Opportunities: Scholarships in Brazil - Doctorate
• Effective date (Start): April 01, 2018
• Effective date (End): February 28, 2022
• Field of knowledge: Agronomical Sciences - Agronomy - Plant Health
• Principal Investigator: Jorge Alberto Marques Rezende
• Grantee: Gabriel Madoglio Favara
• Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
• Associated research grant: 12/51771-4 - Begomovirus and Crinivirus in Solanaceae: molecular epidemiology and management strategies, AP.TEM

Abstract

Tomato crops are susceptible to several species of virus belonging to the genus Begomovirus. Tomato Severe Rugose Virus (ToSRV) is one of the most important species in Brazil because it predominates in tomato main producing regions of this country and causes economic damages to production. ToSRV is transmitted in a circulative persistent manner by the whitefly Bemisia tabaci MEAM1. In addition, ToSRV has a wide host range including weeds and cultivated plants. These alternative hosts can act as reservoirs of the virus in the field. Although not very often, there is Begomovirus specie that can be transmitted to the progeny of B. tabaci, via transovarial and also among adults, via mating, as demonstrated for Tomato Yellow Leaf Curl Virus. This may be important in the epidemiology of the disease, since the viral inoculum remains in the vector, even in the absence of virus host plants. Despite the use of resistant cultivars and the constant application of insecticides for vector control, the disease associated with ToSRV occurs at high incidence in tomato crops. These facts justify the importance of improving knowledge about the epidemiology of the disease and the virus-vector relationships to allow the development of alternative management measures of this disease. The objectives of this work will be: to evaluate the potential of ToSRV susceptible species as source of virus inoculum; to verify the transovarial transmission and via mating of ToSRV by B. tabaci MEAM1; search for mild strains of ToSRV and carry out pre-immunization tests on tomato. The results obtained will provide important information that can be used to manage this disease more efficiently in tomato crops. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

VINICIUS HENRIQUE BELLO; GABRIEL MADOGLIO FAVARA; GUSTAVO VERRUMA BERNARDI; JORGE ALBERTO MARQUES REZENDE; RENATO BARBOSA SALAROLI; ELLIOT WATANABE KITAJIMA. First report of sunflower chlorotic mottle virus infecting sunflower plants in Brazil. Scientia Agricola, v. 80, 2022-09-12. (21/02179-4, 20/05563-7, 21/03113-7, 18/18274-3, 18/01633-0)

FAVARA, GABRIEL M.; BELLO, VINICIUS H.; REZENDE, JORGE A. M.. Evidence of no horizontal or vertical transmission of tomato severe rugose virus by Bemisia tabaci MEAM1. PLANT PATHOLOGY, v. 70, n. 4, DEC 2020. (18/18274-3, 12/51771-4, 18/01633-0)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

FAVARA, Gabriel Madoglio. Tomato severe rugose virus: exploring the potential of soybean as source of inoculum and no evidence of horizontal or vertical transmission by Bemisia tabaci MEAM1. 2022. Doctoral Thesis - Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz (ESALA/BC) Piracicaba.