Survey of begomoviruses and the crinivirus, tomato chlorosis virus, in solanaceous in Southeast/Midwest of Brazil

Mituti, Tatiana; Moura, M. F.; Macedo, M. A.; Silva, Talita N. Z.; Pinto, Luiz Rafael; Costa, Hélcio; Krause‐Sakate, Renate; Inoue‐Nagata, Alice K.; Nunes, Gabriela Gonçalves; Lima, M. F.; Rezende, J. A. M.

doi:10.1007/s40858-019-00294-z

Cited by 19 publications

(17 citation statements)

References 38 publications

(38 reference statements)

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“…It suggests that after their establishment in a specific crop, under a certain vector population in an intensively cultivated area, the co-existence of two begomoviruses in the same plant is not a common phenomenon. In fact, some regions may have reached this stage with the predominance of ToSRV in the major tomato-growing areas of the country (States of Goiás, São Paulo, and Minas Gerais, Mituti et al, 2019 ), ToMoLCV in the North-East region ( Fernandes et al, 2008 ; Inoue-Nagata et al, 2016 ; Rojas et al, 2018 ), and tomato common mosaic virus (ToCmMV) in the states of Espírito Santo and Rio de Janeiro ( Barbosa et al, 2016 ).…”

Section: Discussionmentioning

confidence: 99%

“…Currently, 25 species of tomato-infecting begomoviruses have been described in Brazil (e.g., Flores et al, 1960;Matyis et al, 1975;Ribeiro et al, 2003;Fernandes et al, 2006;Castillo-Urquiza et al, 2008;Fernandes et al, 2008;Albuquerque et al, 2012;Rocha et al, 2013). Bipartite begomoviruses, especially tomato severe rugose virus (ToSRV;Inoue-Nagata et al, 2016;Rojas et al, 2018;Mituti et al, 2019), are the most predominant in tomato plants. The monopartite tomato mottle leaf curl virus (ToMoLCV) (Vu et al, 2015) has also been largely reported in tomato plants and causes severe symptoms such as chlorotic spots, interveinal chlorosis, mottling, mosaic, leaf distortion, and stunting (Inoue-Nagata et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Based on the overwhelming diversity of begomoviruses in tomato plants in Brazil and the prevalence of only two begomovirus species ( Inoue-Nagata et al, 2016 ; Rojas et al, 2018 ; Mituti et al, 2019 ), we hypothesize that several native begomoviruses were introduced from wild and weed plants to tomato and that their diversity decreased over time after intensive interactions between viruses, vectors, hosts, and environmental factors. Furthermore, the broad use of resistant tomato cultivars carrying Ty- like may also have influenced the begomovirus population dynamics in the field, as reported earlier for tomato yellow leaf curl disease ( García-Andrés et al, 2009 ).…”

Section: Introductionmentioning

confidence: 99%

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A Temporal Diversity Analysis of Brazilian Begomoviruses in Tomato Reveals a Decrease in Species Richness between 2003 and 2016

et al. 2020

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Understanding the molecular evolution and diversity changes of begomoviruses is crucial for predicting future outbreaks of the begomovirus disease in tomato crops. Thus, a molecular diversity study using high-throughput sequencing (HTS) was carried out on samples of infected tomato leaves collected between 2003 and 2016 from Central Brazil. DNA samples were subjected to rolling circle amplification and pooled in three batches,

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Temporal Diversity Analysis of Brazilian Begomoviruses in Tomato Reveals a Decrease in Species Richness between 2003 and 2016

et al. 2020

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“…In 2018, approximately 59.7 thousand hectares were planted to tomatoes in the country, and 4.1 million tons of fruit was produced (Instituto Brasileiro de Geografia e Estatística [IBGE], 2018). Tomato production can be affected by several begomoviruses, the most prevalent being tomato severe rugose virus (ToSRV) (Fernandes et al, 2008;Inoue-Nagata et al, 2016;Rojas et al, 2018;Mituti et al, 2019). Begomoviruses are transmitted by the silverleaf whitefly Bemisia tabaci in a circulative-persistent manner (Rosen et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Amplifier Hosts May Play an Essential Role in Tomato Begomovirus Epidemics in Brazil

et al. 2020

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Current control of tomato golden mosaic disease, caused in Brazil predominantly by tomato severe rugose virus (ToSRV), is dependent on both, planting resistant/tolerant hybrids and intensive insecticide sprays (two to three per week) for controlling Bemisia tabaci, the vector of ToSRV. Resistant hybrids only confer moderate resistance to infection by ToSRV and some tolerance to the disease. Insecticide sprays, although widely used, have failed in most tomato production areas in Brazil, as they are unable to reduce primary spread, i.e., infection caused by the influx of viruliferous whiteflies coming from external sources of inoculum. Severe epidemics are recurrently observed in some tomato fields in several Brazilian regions, which prompted us to postulate the existence in the agroecosystem, in some places and time, of amplifier hosts that provide the necessary force of infection for epidemics to occur, even in the absence of secondary spread in the target crop. Amplifier hosts are ideally asymptomatic, occur in high density near the target crop, and support growth of both virus and vector. Soybean and common bean are potential amplifier hosts for begomovirus in tomato crops. Our results support the hypothesis that soybean plants may play an important role as an amplifier host of ToSRV for tomato crops in the field, although this does not seem to be a frequent phenomenon. Successful amplification will depend on several factors, including the soybean cultivar, the soybean stage of development at the moment of infection, the ToSRV isolate, and the perfect synchrony between the beginning of a soybean field and the end of a ToSRV-infected crop, and, later, between the senescence of the ToSRVinfected soybean plants and the new tomato crop. The concept of amplifier hosts has been widely used in ecology of zoonoses but, to our knowledge, has never been used in botanical epidemiology.

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“…In Brazil, B. tabaci is responsible for the transmission of begomoviruses and a crinivirus in solanaceous crops, particularly tomato (Inoue‐Nagata et al, 2016). Several species of begomovirus have been reported to infect tomato plants in Brazil; however, a survey between 2013 and 2017 in tomato fields in the states of São Paulo, Minas Gerais, Goiás, Rio de Janeiro, Bahia, and Espírito Santo indicated that tomato severe rugose virus (ToSRV) was prevalent, being detected in 105/136 (77.2%) of plants analysed (Mituti et al, 2019). So far, this begomovirus has been found only in Brazil.…”

Section: Introductionmentioning

confidence: 99%

Evidence of no horizontal or vertical transmission of tomato severe rugose virus by Bemisia tabaci MEAM1

2020

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Bemisia tabaci is important in agriculture worldwide, mainly because it is a vector of numerous plant viruses, probably the most important of which are members of the genus Begomovirus. Dozens of begomoviruses have been reported to infect tomato plants in Brazil, although tomato severe rugose virus (ToSRV) predominates in tomato crops. ToSRV, found so far only in Brazil, is efficiently transmitted by B. tabaci MEAM1. However, no studies have assessed the occurrence of vertical and horizontal transmission of the virus in the insect, which may have epidemiological consequences affecting disease management. This study evaluated the possibility of transmission of ToSRV between whiteflies during copulation and transovarial transmission from viruliferous females of B. tabaci MEAM1 to their progeny. Transmission of ToSRV did not occur during mating between males and females of B. tabaci MEAM1. Aviruliferous males and females confined with viruliferous insects of the opposite sex were also unable to transmit the virus to tomato plants. ToSRV was detected, by PCR, in the ovaries of viruliferous females of B. tabaci MEAM1 but not in eggs, nymphs, or adults of the progeny of viruliferous females. Adult progeny of viruliferous females also did not transmit ToSRV to tomato plants. Together, the results indicate that vertical and horizontal transmission of ToSRV by B. tabaci MEAM1 is unlikely. Sustainable management of the tomato golden mosaic disease caused by ToSRV should continue to focus on using resistant varieties, managing sources of inoculum around tomato fields, and rational chemical control of the vector.

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Survey of begomoviruses and the crinivirus, tomato chlorosis virus, in solanaceous in Southeast/Midwest of Brazil

Cited by 19 publications

References 38 publications

A Temporal Diversity Analysis of Brazilian Begomoviruses in Tomato Reveals a Decrease in Species Richness between 2003 and 2016

A Temporal Diversity Analysis of Brazilian Begomoviruses in Tomato Reveals a Decrease in Species Richness between 2003 and 2016

Amplifier Hosts May Play an Essential Role in Tomato Begomovirus Epidemics in Brazil

Evidence of no horizontal or vertical transmission of tomato severe rugose virus by Bemisia tabaci MEAM1

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