Populations of Bemisia tabaci Mediterranean in São Paulo state are inefficient vectors of Brazilian begomoviruses

• Published in: Plant pathology 2024-10, Vol.73 (8), p.2224-2234
• Main Authors: Nogueira, Angélica Maria, Oliveira, Cíntia Sabino, Bello, Vinicius Henrique, Favara, Gabriel Madoglio, Vicentin, Eduardo, Marubayashi, Julio Massaharu, Cruz Martines, Caroline, Watanabe, Luis Fernando Maranho, Barbosa, Tarsiane Mara Carneiro, Lima Alvarez, Daniel, Oliveira, Regiane Cristina, Zerbini, Francisco Murilo, Rezende, Jorge Alberto Marques, Krause‐Sakate, Renate
• Format: Article
• Language: English
• Subjects: Beans; Begomovirus; Bemisia tabaci; BGMV; Crop production; Crops; Cryptic species; Epidemiology; Greenhouses; Insects; Phaseolus vulgaris; Plant layout; Plant viruses; Populations; Solanum lycopersicum; State vectors; Tomatoes; ToRMV; ToSRV; Transmission efficiency; Vectors; Viruses; whiteflies
• ISSN: 0032-0862; 1365-3059
• DOI: 10.1111/ppa.13970

Begomoviruses cause losses in several crops around the world. Whiteflies of the Bemisia tabaci cryptic species MEAM1 and MED are efficient vectors of begomoviruses. MEAM1 has been the predominant species in Brazil since the mid‐1990s. MED was detected in Brazil in 2014, and since then, high insect infestations have been reported, mainly in greenhouse production of solanaceous crops. In this study, we compared the transmission efficiency of the begomoviruses tomato severe rugose virus (ToSRV) and tomato rugose mosaic virus (ToRMV) to tomato (Solanum lycopersicum) and bean golden mosaic virus (BGMV) to common bean (Phaseolus vulgaris) by a population of MEAM1 and four populations of MED. B. tabaci MEAM1 efficiently transmitted ToSRV and ToRMV to tomato and BGMV to common bean. B. tabaci MED populations did not transmit ToSRV and ToRMV to tomato. Only one population of B. tabaci MED transmitted BGMV with an efficiency of 3%. PCR analysis indicated that B. tabaci MED can acquire ToSRV, ToRMV and BGMV after a 24 h acquisition access period. Furthermore, some greenhouse tomato plantings from São Paulo state were surveyed for the presence of viruses and whiteflies, and B. tabaci MED were predominant, whereas begomoviruses were absent. Our results demonstrate that populations of MED from São Paulo state are inefficient vectors of begomoviruses, being able to acquire the virus but not transmit it to plants. Understanding this interaction is important and suggests that the spread of B. tabaci MED could change the epidemiological scenario of begomoviruses in areas where this insect predominates. Bemisia tabaci MED transmitted ToSRV and ToRMV to tomato plants and BGMV to common bean plants inefficiently. The prevalence of B. tabaci MED could alter the epidemiological scenario of begomoviruses in Brazil.