Factors Influencing Begomovirus Evolution and Their Increasing Global Significance: Implications for Sustainable Control

Seal, Susan; vandenBosch, F.; Jeger, M.J.

doi:10.1080/07352680500365257

Cited by 334 publications

(235 citation statements)

References 214 publications

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“…The within-plant virus titre varies widely among virus strains (Varma & Malathi 2003;Jimenez-Martinez & Bosque-Perez 2004;Seal et al 2006), making it possible to analyse the effects of the selection pressure associated with different disease control strategies on the evolution of virus titre in these virus populations. Thus, the evolving trait is the within-plant virus titre, x, that builds up in the plant with systemic infection.…”

Section: (B) Evolving Traitmentioning

confidence: 99%

“…For example, the manner in which the virus titre builds up in the plant during systemic infection is known to vary widely between strains (Varma & Malathi 2003;Jimenez-Martinez & Bosque-Perez 2004;Seal et al 2006) and selection imposed by new or more effective disease control can select strains that build up a higher virus titre. Low virus titre is associated with low symptom severity, which in turn makes it more likely that infected plants are not recognized and are used for vegetative propagation.…”

Section: Introductionmentioning

confidence: 99%

“…are among the main constraints to sustainable production of these vegetatively propagated staple food crops in lesser developed countries (Dahal et al 1997;Rybicki & Pietersen 1999;Gibson & Aritua 2002;Thresh & Cooter 2005). New viral strains frequently emerge (Rybicki & Pietersen 1999;Boulton 2003;Varma & Malathi 2003;Seal et al 2006); some with devastating consequences, such as the current pandemic of a new strain of the virus causing cassava mosaic disease (CMD) in Africa (Gibson et al 1996).…”

Section: Introductionmentioning

confidence: 99%

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Disease control and its selection for damaging plant virus strains in vegetatively propagated staple food crops; a theoretical assessment

2006

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Viral diseases are a key constraint in the production of staple food crops in lesser developed countries. New and improved disease control methods are developed and implemented without consideration of the selective pressure they impose on the virus. In this paper, we analyse the evolution of within-plant virus titre as a response to the implementation of a range of disease control methods. We show that the development of new and improved disease control methods for viral diseases of vegetatively propagated staple food crops ought to take the evolutionary responses of the virus into consideration. Not doing so leads to a risk of failure, which can result in considerable economic losses and increased poverty. Specifically in vitro propagation, diagnostics and breeding methods carry a risk of failure due to the selection for virus strains that build up a high within-plant virus titre. For vegetatively propagated crops, sanitation by roguing has a low risk of failure owing to its combination of selecting for low virus titre strains as well as increasing healthy crop density.

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Section: (B) Evolving Traitmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Disease control and its selection for damaging plant virus strains in vegetatively propagated staple food crops; a theoretical assessment

2006

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“…DNA A typically has six open reading frames (ORFs): AV1/V1 (coat protein, CP) and AV2/V2 (AV2/V2 protein) on the virion-sense strand, and AC1/C1 (replication initiation protein, Rep), AC2/C2 (transcriptional activator protein, TrAP), AC3/C3 (replication enhancer protein, REn) and AC4/C4 (AC4/C4 protein) on the complementary-sense strand. DNA-B has two ORFs encoding proteins necessary for virus movement: BV1 (nuclear shuttle protein, NSP) on the virus-sense strand and BC1 (movement protein, MP) on the complementary-sense strand [33,36].…”

mentioning

confidence: 99%

Detection of Corchorus golden mosaic virus Associated with Yellow Mosaic Disease of Jute (Corchorus capsularis)

et al. 2012

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Yellow mosaic disease, caused by a whitefly transmitted New World Begomovirus, named Corchorus golden mosaic virus (CoGMV), is emerging as a serious biotic constraint for jute fibre production in Asia. For rapid and sensitive diagnosis of the Begomovirus associated with this disease, a non-radiolabelled diagnostic probe, developed against the DNA A component of the east Indian isolate of CoGMV, detected the presence of the virus in infected plants and viruliferous whiteflies following Southern hybridization and nucleic acid spot hybridization tests. Presence of the virus was also confirmed when polymerase chain reaction amplification was performed using virus-specific primers on DNA templates isolated from infected plants and viruliferous whiteflies.

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“…Both the phenomenon are responsible for the diversification in begomovirus between variants of the same virus, between different species and between different genus leading to the ability to adapt in different environment and forming new variants in new hosts. Mutations and acquiring new components like satellite molecules in the viral genome resulted in the emergence of new viruses [23,124,135]. One of a key recombinant event in ToMoV DNA-A CR with that of BDMV DNA-B component has resulted in the emergence of new virulent fitter begomovirus.…”

Section: Introductionmentioning

confidence: 99%

Emerging threats of begomoviruses to the cultivation of medicinal and aromatic crops and their management strategies

Saeed

Samad

2017

VirusDis.

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Begomoviruses (family Geminiviridae) are responsible for extreme yield reduction in a number of economically important crops including medicinal and aromatic plants (MAPs). Emergence of new variants of viruses due to recombination and mutations in the genomes, modern cropping systems, introduction of susceptible plant varieties, global trade in agricultural products, and changes in climatic conditions are responsible for aggravating the begomovirus problems during the last two decades. This review summaries the current research work on begomoviruses affecting MAPs and provides various traditional and advanced strategies for the management of begomoviruses and vector in MAPs.

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Factors Influencing Begomovirus Evolution and Their Increasing Global Significance: Implications for Sustainable Control

Cited by 334 publications

References 214 publications

Disease control and its selection for damaging plant virus strains in vegetatively propagated staple food crops; a theoretical assessment

Disease control and its selection for damaging plant virus strains in vegetatively propagated staple food crops; a theoretical assessment

Detection of Corchorus golden mosaic virus Associated with Yellow Mosaic Disease of Jute (Corchorus capsularis)

Emerging threats of begomoviruses to the cultivation of medicinal and aromatic crops and their management strategies

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