Ocorrência e variabilidade genética do Tomato severe rugose virus em tomateiro e pimentão no Estado de São Paulo

Rocha, Kelly Cristina Gonçales; Marubayashi, Julio Massaharu; Navas‐Castillo, Jesús; Pavan, Marcelo Agenor; Krause‐Sakate, Renate

doi:10.1590/s0100-54052010000300006

Cited by 11 publications

(6 citation statements)

References 21 publications

(12 reference statements)

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“…To test this hypothesis, we selected Tomato severe rugose virus (ToSRV, Geminiviridae ), the predominant begomovirus infecting tomatoes in Brazil [26], and Tomato chlorosis virus (ToCV, Closteroviridae ) a worldwide distributed crinivirus causing serious disease in tomatoes and other solanaceous crops [25]. The aim of our work was to investigate if ToSRV and ToCV manipulate the behaviour of its vector, B. tabaci , in ways that can affect virus spread.…”

Section: Introductionmentioning

confidence: 99%

Tomato Infection by Whitefly-Transmitted Circulative and Non-Circulative Viruses Induce Contrasting Changes in Plant Volatiles and Vector Behaviour

Fereres

Peñaflor

Fávaro

et al. 2016

Viruses

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Virus infection frequently modifies plant phenotypes, leading to changes in behaviour and performance of their insect vectors in a way that transmission is enhanced, although this may not always be the case. Here, we investigated Bemisia tabaci response to tomato plants infected by Tomato chlorosis virus (ToCV), a non-circulative-transmitted crinivirus, and Tomato severe rugose virus (ToSRV), a circulative-transmitted begomovirus. Moreover, we examined the role of visual and olfactory cues in host plant selection by both viruliferous and non-viruliferous B. tabaci. Visual cues alone were assessed as targets for whitefly landing by placing leaves underneath a Plexiglas plate. A dual-choice arena was used to assess whitefly response to virus-infected and mock-inoculated tomato leaves under light and dark conditions. Thereafter, we tested the whitefly response to volatiles using an active air-flow Y-tube olfactometer, and chemically characterized the blends using gas chromatography coupled to mass spectrometry. Visual stimuli tests showed that whiteflies, irrespective of their infectious status, always preferred to land on virus-infected rather than on mock-inoculated leaves. Furthermore, whiteflies had no preference for either virus-infected or mock-inoculated leaves under dark conditions, but preferred virus-infected leaves in the presence of light. ToSRV-infection promoted a sharp decline in the concentration of some tomato volatiles, while an increase in the emission of some terpenes after ToCV infection was found. ToSRV-viruliferous whiteflies preferred volatiles emitted from mock-inoculated plants, a conducive behaviour to enhance virus spread, while volatiles from ToCV-infected plants were avoided by non-viruliferous whiteflies, a behaviour that is likely detrimental to the secondary spread of the virus. In conclusion, the circulative persistent begomovirus, ToSRV, seems to have evolved together with its vector B. tabaci to optimise its own spread. However, this type of virus-induced manipulation of vector behaviour was not observed for the semi persistent crinivirus, ToCV, which is not specifically transmitted by B. tabaci and has a much less intimate virus-vector relationship.

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Section: Introductionmentioning

confidence: 99%

Tomato Infection by Whitefly-Transmitted Circulative and Non-Circulative Viruses Induce Contrasting Changes in Plant Volatiles and Vector Behaviour

Fereres

Peñaflor

Fávaro

et al. 2016

Viruses

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“…Colariccio et al (2007) reported the occurrence of Tomato rugose mosaic virus (ToRMV) and ToYVSV in tomato producing regions in the state of São Paulo. Rocha et al (2010) runned DNA molecular analysis on tomato samples collected in São Paulo and detected mixed infections of ToYVSV and Tomato severe rugose virus (ToSRV). G e n e t i c r e s i s t a n c e i s t h e most effective measure to control geminiviruses.…”

Section: Pesquisa / Researchmentioning

confidence: 99%

Selection of tomato breeding lines with resistance to Tomato yellow vein streak virus

et al. 2015

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The study aimed to assess the reaction to Tomato yellow vein streak virus (ToYVSV) of determinate-growth tomato breeding lines of the Instituto Agronomico de Campinas (Campinas Agronomic Institute) germplasm collection and to select resistant plants. The experiment was carried out from August 2008 to February 2009 in greenhouse conditions. The geminivirus isolate used was collected in a tomato commercial field, in Sumaré, São Paulo State, Brazil. The experimental design was completely ramdomized blocks, with 25 treatments, four replications, and 30-plant plots. Virus transmission was carried out in cages containing viruliferous whiteflies (Bemisia tabaci B biotype). Plant reaction to the pathogen was evaluated by means of the percentage of symptomless plants 40, 50, 57 and 64 days after transplanting. Virus detection in each genotype was carried out using PCR. Although all genotypes showed plants with and without ToYVSV symptoms, lines IAC-TG 17 and LA 462 (Solanum peruvianum) stood out due to the highest percentage of symptomless plants in the four evaluation dates. Therefore, considering the genotypes evaluated and the edaphoclimatic conditions in which this work was carried out, lines IAC-TG 17 and LA 462 can be used as sources of resistance to ToYVSV.

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“…in this country (Nozaki et al, 2006). Plants of Capsicum infected by ToSRV show yellow mosaic and leaf distortion (Bezerra et al, 2006), yellowing of veins, chlorotic mottling and reduction of plant growth (Rocha et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Since the first report of begomoviruses in pepper in Brazil (Lima et al, 2001), B. tabaci belonging to the Middle East-Asia Minor 1 group, which includes the invasive populations of the commonly known B biotype (Dinsdale et al, 2010), has been frequently found in this crop, contributing to an increase in the incidence of these viruses, especially Tomato severe rugose virus (ToSRV), prevalent in São Paulo state (Nozaki et al, 2006;Rocha et al, 2010;Rocha et al, 2011) and widespread in Brazil (Fernandes et al, 2008). Brazil is considered one of the major diversity centers of the neotropical bipartite begomovirus cluster (Fernandes et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of resistance to Tomato severe rugose virus (ToSRV) in Capsicum spp. genotypes

Rocha¹,

Marubayashi²,

Mituti³

et al. 2012

Trop. plant pathol.

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Tomato severe rugose virus (ToSRV) is the predominant species of begomovirus in São Paulo State, Brazil, and infects primarily tomato and pepper plants. There is no information about genetic resistance of pepper to this virus, so in this work the reaction of 29 genotypes of Capsicum spp. was evaluated by inoculation of two ToSRV isolates: ToSRV-Sk (isolated from a tomato plant) and ToSRV-PJU (isolated from a pepper plant). For both isolates, two C. annuun genotypes (Catarino Cascabel -México and Silver) showed no symptoms 30 days after inoculation (d.a.i). In a second experiment, these two genotypes were evaluated for 150 d.a.i and, again, no symptoms could be observed. However, the virus was detected by RCA-PCR, indicating that both genotypes are susceptible, but less affected by ToSRV infection. Catarino Cascabel -México and Silver can be indicated for use in breeding programs for resistance of pepper to ToSRV.

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Ocorrência e variabilidade genética do Tomato severe rugose virus em tomateiro e pimentão no Estado de São Paulo

Cited by 11 publications

References 21 publications

Tomato Infection by Whitefly-Transmitted Circulative and Non-Circulative Viruses Induce Contrasting Changes in Plant Volatiles and Vector Behaviour

Tomato Infection by Whitefly-Transmitted Circulative and Non-Circulative Viruses Induce Contrasting Changes in Plant Volatiles and Vector Behaviour

Selection of tomato breeding lines with resistance to Tomato yellow vein streak virus

Evaluation of resistance to Tomato severe rugose virus (ToSRV) in Capsicum spp. genotypes

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