Characterization and Experimental Host Range of a Brazilian Tomato Isolate of Tomato severe rugose virus

Barbosa, J. C.; Barreto, Sarah da Silva; Inoue‐Nagata, Alice K.; Rezende, J. A. M.

doi:10.1111/j.1439-0434.2011.01817.x

Cited by 26 publications

(22 citation statements)

References 7 publications

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“…; Barbosa et al. , ), they may serve as primary source of inoculum and vector. In the course of the experiments, leaf samples from Chenopodium album , C. ambrosioides , Nicandra physaloides and Sida urens naturally occurring near to the tomato fields were analysed by PCR and revealed as positive for ToSRV infection (data not shown).…”

Section: Discussionmentioning

confidence: 99%

Temporal Dynamics of Tomato Severe Rugose Virus and Bemisia tabaci in Tomato Fields in São Paulo, Brazil

Barbosa

Rezende

Amorim

et al. 2015

Journal of Phytopathology

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Temporal progress of a begomovirus disease in tomato fields and the abundance of its whitefly vector, Bemisia tabaci biotype B, were evaluated during three consecutive tomato plantings in the municipality of Sumaré, state of São Paulo, Brazil, in 2006 and 2007. The incidence of symptomatic plants and the number of adult whiteflies were weekly monitored on experimental plots randomly chosen in tomato commercial fields. Tomato severe rugose virus (ToSRV) was identified as the causal agent of the disease, and its relationships with other Brazilian begomoviruses was confirmed by partial and complete nucleotide sequencing of the viral genome. The disease temporal progress was analysed by fitting different models to disease incidence. The monomolecular model showed the best fit, which is consistent with a predominant role of primary spread in the epidemiology of ToSRV. A higher number of adult whiteflies were observed at the borders of the plots, also suggesting primary spread of ToSRV from external sources of inoculum, which might be represented by weeds and volunteer tomato‐infected plants. In Brazil, since 2004, there is a legislative measure that mandates, for some regions of processing tomato plantings, a 2‐month crop‐free period during the year. Based on our results, we suggest the extension of this measure to all tomato‐producing regions, including fresh market tomato. We also suggest that growers emphasize the elimination of old plants from harvested fields that can serve as virus reservoirs several weeks prior to new plantings and weeds nearby the fields to limit the primary spread of ToSRV.

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Section: Discussionmentioning

confidence: 99%

Temporal Dynamics of Tomato Severe Rugose Virus and Bemisia tabaci in Tomato Fields in São Paulo, Brazil

Barbosa

Rezende

Amorim

et al. 2015

Journal of Phytopathology

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“…To date, at least 14 recognized species of tomato-infecting begomoviruses have been described from Brazil (Ribeiro et al, 2003;Fernandes et al, 2006;Castillo-Urquiza et al, 2008;Barbosa et al, 2011;Albuquerque et al, 2012b;Rocha et al, 2013). The disease symptoms induced by these viruses include stunting and distorted growth and golden-light green-yellow mosaic/ mottle, crumpling, curling, interveinal chlorosis, rugosity, vein yellowing and purpling, and yellow spotting in leaves ( Figures 1B, 2B, 2C).…”

Section: Tomato (Solanum Lycopersicum)mentioning

confidence: 99%

A review of geminivirus diseases in vegetables and other crops in Brazil: current status and approaches for management

2016

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Insect-transmitted viruses cause some of the most damaging and economically important diseases of crop plants, especially in tropical and subtropical regions. The geminiviruses, a group of single-stranded DNA viruses with unique twined icosahedral virus particles, are responsible for many of these diseases. Of particular importance are the geminiviruses transmitted by whiteflies (Bemisia tabaci), which are in the genus Begomovirus. This is the largest genus of plant viruses (in terms of number of species), and some are responsible for devastating diseases in vegetable and fiber crops throughout the world. This review presents the current understanding of begomoviruses, the diseases they cause, and approaches for disease management. An emphasis is placed on the most important begomovirus diseases in Brazil, which are those that affect common bean and tomato. However, because of the wide host range of the vector and the genetic flexibility of begomoviruses, these diseases pose a threat to many other crops. Therefore, the current situation with begomoviruses that infect okra, pepper, potato, sweet potato and soybean in Brazil is also discussed.

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“…The insecticide susceptibility of whiteflies was not altered by their viruliferous condition (V or AV frutos por planta (Giordano et al, 2005). Tomato severe rugose virus (ToSRV) é um dos begomovírus predominante no Brasil (Barbosa et al, 2011) sendo transmitido por B. tabaci biótipo B de forma persistente-circulativa (Rubinstein & Czosnek, 1997). Segundo Santos et al (2003), os adultos de B. tabaci biótipo B podem adquirir o begomovírus alimentando-se por pelo menos 15 minutos (período de acesso de aquisição, PAA) de uma planta doente, sendo capaz de transmiti-lo após 16 horas (período de latência, PL), tão logo mantenha contato com uma planta sadia por pelo menos 30 minutos de alimentação (período de acesso de inoculação, PAI).…”

Section: Abstract Susceptibility Of Bemisia Tabaci Biotype B To Insecunclassified

Suscetibilidade de adultos de Bemisia tabaci biótipo B a inseticidas

et al. 2016

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RESUMO: A associação de alguns vírus fitopatogênicos com seus vetores pode ou não alterar a ação do controle químico. Este trabalho objetivou avaliar a suscetibilidade de moscas-brancas virulíferas (com aquisição do begomovirus Tomato severe rugose virus, ToSRV) e avirulíferas (sem aquisição do ToSRV) aos principais inseticidas registrados para o seu controle na cultura do tomateiro. Foram realizados ensaios com plantas de tomateiro e discos foliares de feijão-de-porco. Os tratamentos foram arranjados em esquema fatorial de 7 (seis inseticidas + controle) e de 5 (quatro inseticidas + controle) x 2 {mosca-branca (MB) virulífera (V) ou avirulífera (AV)} e dispostos no delineamento em blocos ao acaso com seis e 25 repetições para o tomateiro e feijão-de-porco, respectivamente. Os inseticidas e concentrações avaliados foram: a) tomateiro: acefato (100 g), clotianidina (20 g), pimetrozina (40 g), piriproxifem (75 mL) e tiametoxam (20 g de i.a./100 L de calda) e diafentiurom (800 g de i.a./300 L de calda); b) feijão-de-porco: acefato (100 g), tiametoxam (20 g), pimetrozina (40 g de i.a./100 L) e diafentiurom (800 g de i.a./300 L de calda). Não houve diferença na suscetibilidade do vetor em razão de sua condição (V ou AV). Os inseticidas diafentiurom (87,68%±4,96) e tiametoxam (43,95%±9,43) proporcionaram maior mortalidade de MB no tomateiro, enquanto no feijão-de-porco diafentiurom (92,01%±2,68) e tiametoxam (86,39%±2,74) apresentaram desempenho similar. Diafentiurom foi o único inseticida que proporcionou controle satisfatório de B. tabaci em ambos os ensaios avaliados.

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Characterization and Experimental Host Range of a Brazilian Tomato Isolate of Tomato severe rugose virus

Cited by 26 publications

References 7 publications

Temporal Dynamics of Tomato Severe Rugose Virus and Bemisia tabaci in Tomato Fields in São Paulo, Brazil

Temporal Dynamics of Tomato Severe Rugose Virus and Bemisia tabaci in Tomato Fields in São Paulo, Brazil

A review of geminivirus diseases in vegetables and other crops in Brazil: current status and approaches for management

Suscetibilidade de adultos de Bemisia tabaci biótipo B a inseticidas

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