Plant Virus Disease Problems in The Developing World

Rybicki, Edward P.; Pietersen, G.

doi:10.1016/s0065-3527(08)60346-2

Cited by 80 publications

(58 citation statements)

References 120 publications

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“…The genus Begomovirus belongs to the family Geminiviridae, a family of single-stranded DNA viruses that can cause significant yield loss to tropical crops, including papaya [35,41,53]. Transmitted by whiteflies, begomoviruses are often associated with satellites and produce characteristic symptoms, including leaf curl, that adversely affect photosynthetic tissues [7].…”

Section: Introductionmentioning

confidence: 99%

“…Transmitted by whiteflies, begomoviruses are often associated with satellites and produce characteristic symptoms, including leaf curl, that adversely affect photosynthetic tissues [7]. Control of begomoviruses poses a global challenge in the face of debilitating epidemics reported for tomato, cotton and cassava [5,21,26,41]. It is evident from these pandemics that multiple causes, viz., introduction and adoption of susceptible host plant varieties, increase in populations and host choice of virulent vectors, emergence of novel and/or recombinant viruses with modified host range and even climate change, co-exist.…”

Section: Introductionmentioning

confidence: 99%

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Spatial and temporal diversity of begomoviral complexes in papayas with leaf curl disease

et al. 2012

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spatial and temporal diversity of begomoviral complexes in papayas with leaf curl disease

et al. 2012

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“…Emergence of plant viral diseases causes considerable economical and social problems (Rybicki and Pietersen, 1999). However, despite their importance, the attributes responsible for the establishment and spread of invaders are often difficult to pinpoint or are unknown.…”

Section: The Tomato Yellow Leaf Curl Disease and Associated Virusesmentioning

confidence: 99%

Rapid evolution of the population of begomoviruses associated with the tomato yellow leaf curl disease after invasion of a new ecological niche: a review

Moriones

Navas‐Castillo

2008

Span. j. agric. res.

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Epidemics of tomato yellow leaf curl disease (TYLCD) caused by monopartite begomoviruses (family Geminiviridae) result in devastating damage to tomato (Solanum lycopersicum L.) crops in Spain since early 1990's. Initially, the ES strain of the species Tomato yellow leaf curl Sardinia virus (TYLCSV) was reported as the causal agent. The population of this virus exhibited a high genetic stability. However, introduction of new virus types also associated with TYLCD occurred which rapidly altered the virus population structure and diversity. Thus, isolates of the Mld and the IL strains of Tomato yellow leaf curl virus (TYLCV) were introduced, which resulted in a progressive displacement of TYLCSV. Single, undifferentiated subpopulations were observed for each virus type, compatible with founder effects. Mixed infections were detected in single plants, rationalizing the occurrence of recombinants. In fact, natural recombinants between TYLCSV and TYLCV with selective advantage over the parental genotypes rapidly emerged and spread in the virus population. These data evidenced the great dynamism of the begomovirus population associated with the TYLCD after the invasion of a non-native area and the contribution of genetic migration and recombination to the genetic diversification.Additional key words: geminivirus, genetic diversity, genetic migration, recombination. ResumenRevisión. Rápida evolución de la población de begomovirus asociados con la enfermedad del rizado amarillo del tomate tras la invasión de un nuevo nicho ecológico Las epidemias de la enfermedad del rizado amarillo del tomate (tomato yellow leaf curl disease, TYLCD) causadas por begomovirus (familia Geminiviridae) monopartitos ocasionan importantes pérdidas económicas en los cultivos de tomate (Solanum lycopersicum L.) españoles desde inicios de los años 1990s. En un principio estas epidemias se encontraron asociadas con la cepa ES de la especie Tomato yellow leaf curl Sardinia virus (TYLCSV). La población de este virus presentaba una alta estabilidad genética en ausencia de influencias externas. Sin embargo, la migración de nuevos tipos genéticos de begomovirus asociados con TYLCD resultó en una rápida alteración de la diversidad y estructura de la población viral existente. Así, la introducción de las cepas Mld e IL de la especie Tomato yellow leaf curl virus (TYLCV) resultó en un desplazamiento progresivo de TYLCSV en las epidemias. La población quedó estructurada en subpoblaciones únicas e indiferenciadas para cada tipo viral, compatible con efectos fundadores. Además, se detectaba la presencia de infecciones mixtas de virus en plantas individuales, lo que permitía la generación de tipos recombinantes. De hecho, en poco tiempo se observó la emergencia en la población de recombinantes naturales entre TYLCSV y TYLCV, con ventajas selectivas frente a los virus parentales. Por tanto, nuestros datos sugieren un gran dinamismo de la población de begomovirus asociados con TYLCD después de la invasión de un área no nativa, así como la contribución d...

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“…The CABMV is a pathogen of many crops, including common beans (Phaseolus vulgaris L.) Fabaceae and has a wide host range (Behnckken and Maleevsky 1977). The CABMV, a member of the genus potyvirus belonging to the family potyviridae, is one of the plant viruses that cause the most widespread disease in cowpea in the world (Rybicki and Pietersen 1999). The intriguing characteristics of potyviral diseases are the appearance of mosaic, vein clearing, mottling, deformation and stunting of plants, which are characteristics of CABMV.…”

Section: Introductionmentioning

confidence: 99%

Genetic inheritance of resistance to cowpea aphid-borne mosaic virus in cowpea

et al. 2012

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Cowpea aphid-borne mosaic virus (CAB-MV) is a major virus disease in Uganda that causes substantial loss of the cowpea crop especially in growth and yield. The mode of gene action conferring resistance to the virus is not well understood. The objective of the study was to determine the genetic inheritance of resistance in cowpea crosses. Three susceptible (S) cowpea landraces that are commonly grown by farmers were crossed with five introduced resistant cowpea varieties in accordance with a North Carolina mating design II scheme. The F 1 , F 2 and BC 1 F 1 progenies generated were evaluated in the field together with their parents. They were then infected with two infection methods namely: by spreader-rows of S cultivar (Ebelat) and artificial inoculation of virus extracts. The results obtained showed that general combining ability (GCA) and specific combining ability (SCA) effects were significant, indicating that both additive and non-additive gene effects controlled virus infection. The results further demonstrated that the GCA effects (59.8 %) were more important than SCA effects (40.2 %) in determining virus resistance in the cowpea varieties. Utilisation of good general combiners of the varieties MU-93, IT82D-516-2, SECOW-2W and IT85F-2841 in hybridisation to improve virus resistance in cowpea crosses would be recommended. The result of this study provided an indication that CABMV resistance was conditioned by more than one recessive gene in eight populations, but also revealed resistance to be conditioned by a single recessive gene in the other seven populations. Observation of continuous distribution of progenies for severity data in the F 2 populations also confirmed significance of quantitative inheritance for CABMV resistance. Therefore, the significance of GCA effects suggests that recurrent selection could be applied to accumulate the additive genes for resistance in F 2 populations.

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Plant Virus Disease Problems in The Developing World

Cited by 80 publications

References 120 publications

Spatial and temporal diversity of begomoviral complexes in papayas with leaf curl disease

Spatial and temporal diversity of begomoviral complexes in papayas with leaf curl disease

Rapid evolution of the population of begomoviruses associated with the tomato yellow leaf curl disease after invasion of a new ecological niche: a review

Genetic inheritance of resistance to cowpea aphid-borne mosaic virus in cowpea

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