Plant-mediated indirect effects of two viruses with different transmission modes on Bemisia tabaci feeding behavior and fitness

Author(s)

Maluta, Nathalie ^[1] ; Fereres, Alberto ^[2] ; Spotti Lopes, Joao Roberto ^[1]

Affiliation

^[1] Univ Sao Paulo, Dept Entomol & Acarol, ESALQ, Ave Padua Dias 11, BR-13418900 Piracicaba, SP - Brazil

^[2] CSIC, ICA, Dept Plant Protect, Serrano 115 Dpdo, Madrid 28006 - Spain

• Document type: Journal article
• Source: JOURNAL OF PEST SCIENCE; v. 92, n. 2, p. 405-416, MAR 2019.
• Web of Science Citations: 4

Abstract

Viral infections can induce phenotypic modifications on plant cues that mediate host plant colonization by vectors. It has been postulated that virus transmission mode influences the way in which virus infection alters the vector ` s probing behavior and fitness on plants in order to optimize transmission. We evaluated the indirect effects of tomato plant infection by a semipersistently transmitted crinivirus, Tomato chlorosis virus (ToCV), and a persistently transmitted begomovirus, Tomato severe rugose virus (ToSRV), on the biological parameters and probing behavior of Bemisia tabaci MEAM1, using the electrical penetration graph (EPG) technique. There was a deleterious effect on the viability of nymphs developed on ToCV- or ToSRV-infected tomato plants, but no effects on reproductive parameters of emerged adults, in comparison to mock-inoculated plants. The EPG analysis showed a delay in starting to probe and fewer probing attempts on ToCV-infected plants, suggesting that ToCV infection reduces plant palatability. No virus-indirect effect was observed on the insect ` s probing behavior in the phloem tissue. Our combined results show that tomato infection by viruses with two different transmission modes affected the development of the whitefly vector similarly, with neutral effects on probing behavior parameters associated with virus acquisition in the phloem, and thus no apparent benefits for virus 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: 12/24974-1 - Biological and behavioral responses of Bemisia tabaci biotype B in tomato infected plants with Tomato chlorosis virus (ToCV)
• Grantee: Nathalie Kristine Prado Maluta
• Support Opportunities: Scholarships in Brazil - Doctorate