Preferential acquisition and inoculation of PVYNTN over PVYO in potato by the green peach aphid Myzus persicae (Sulzer)

Carroll, Juliet; Smith, Dawn; Gray, Stewart M.

doi:10.1099/jgv.0.000374

Cited by 26 publications

(25 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Carroll et al [22] The necrotic strain was transmitted more efficiently than the wild-type. Co-infection would more likely result from inoculation by multiple aphids feeding on plants infected with the different strains rather than by single aphids feeding on multiple plants infected with the different strains.…”

Section: Pvy Ntn Compared With Pvy O -Myzus Persicaementioning

confidence: 99%

“…Co-infection with virus strains differing in virulence (or other characteristic) can lead to the same set of interactions and consequences as found with virus species. A good example of two strains of the same virus species with shared vector species is potato virus Y (PVY) [21][22][23] on potato and other hosts [15]. There are many examples of two co-infecting virus species with a shared vector species [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modelling Vector Transmission and Epidemiology of Co-Infecting Plant Viruses

Allen

Bokil

Cunniffe

et al. 2019

Viruses

View full text Add to dashboard Cite

Co-infection of plant hosts by two or more viruses is common in agricultural crops and natural plant communities. A variety of models have been used to investigate the dynamics of co-infection which track only the disease status of infected and co-infected plants, and which do not explicitly track the density of inoculative vectors. Much less attention has been paid to the role of vector transmission in co-infection, that is, acquisition and inoculation and their synergistic and antagonistic interactions. In this investigation, a general epidemiological model is formulated for one vector species and one plant species with potential co-infection in the host plant by two viruses. The basic reproduction number provides conditions for successful invasion of a single virus. We derive a new invasion threshold which provides conditions for successful invasion of a second virus. These two thresholds highlight some key epidemiological parameters important in vector transmission. To illustrate the flexibility of our model, we examine numerically two special cases of viral invasion. In the first case, one virus species depends on an autonomous virus for its successful transmission and in the second case, both viruses are unable to invade alone but can co-infect the host plant when prevalence is high.

show abstract

Section: Pvy Ntn Compared With Pvy O -Myzus Persicaementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modelling Vector Transmission and Epidemiology of Co-Infecting Plant Viruses

Allen

Bokil

Cunniffe

et al. 2019

Viruses

View full text Add to dashboard Cite

show abstract

“…A recombinant necrotic strain of PVY (PVY NTN ) has increased in the US (and elsewhere) while the wild-type strain PVY O has been decreasing [ 233 ]. Transmission efficiency was determined in experiments where virus was acquired sequentially by an individual aphid ( M. persicae ) or by separate aphids and then inoculated to the same plant.…”

Section: Co-infectionmentioning

confidence: 99%

The Epidemiology of Plant Virus Disease: Towards a New Synthesis

Jeger

2020

Plants

View full text Add to dashboard Cite

Epidemiology is the science of how disease develops in populations, with applications in human, animal and plant diseases. For plant diseases, epidemiology has developed as a quantitative science with the aims of describing, understanding and predicting epidemics, and intervening to mitigate their consequences in plant populations. Although the central focus of epidemiology is at the population level, it is often necessary to recognise the system hierarchies present by scaling down to the individual plant/cellular level and scaling up to the community/landscape level. This is particularly important for diseases caused by plant viruses, which in most cases are transmitted by arthropod vectors. This leads to range of virus-plant, virus-vector and vector-plant interactions giving a distinctive character to plant virus epidemiology (whilst recognising that some fungal, oomycete and bacterial pathogens are also vector-borne). These interactions have epidemiological, ecological and evolutionary consequences with implications for agronomic practices, pest and disease management, host resistance deployment, and the health of wild plant communities. Over the last two decades, there have been attempts to bring together these differing standpoints into a new synthesis, although this is more apparent for evolutionary and ecological approaches, perhaps reflecting the greater emphasis on shorter often annual time scales in epidemiological studies. It is argued here that incorporating an epidemiological perspective, specifically quantitative, into this developing synthesis will lead to new directions in plant virus research and disease management. This synthesis can serve to further consolidate and transform epidemiology as a key element in plant virus research.

show abstract

“…Our interest in the spatial distribution of two PVY strains in co-infection stems from our previous studies on PVY acquisition efficiency and specificity of virus binding by aphid vectors [61][62][63]. Aphids will acquire PVY (and other potyviruses) from epidermal cells during brief probes of the plant to determine host suitability [64][65][66].…”

Section: Introductionmentioning

confidence: 99%

Different potato virus Y strains frequently co-localize in single epidermal leaf cells and in the aphid stylet

Mondal

Ghanim

Roberts

et al. 2021

Journal of General Virology

View full text Add to dashboard Cite

Single aphids can simultaneously or sequentially acquire and transmit multiple potato virus Y (PVY) strains. Multiple PVY strains are often found in the same field and occasionally within the same plant, but little is known about how PVY strains interact in plants or in aphid stylets. Immuno-staining and confocal microscopy were used to examine the spatial and temporal dynamics of PVY strain mixtures (PVYO and PVYNTN or PVYO and PVYN) in epidermal leaf cells of ‘Samsun NN’ tobacco and ‘Goldrush’ potato. Virus binding and localization was also examined in aphid stylets following acquisition. Both strains systemically infected tobacco and co-localized in cells of all leaves examined; however, the relative amounts of each virus changed over time. Early in the tobacco infection, when mosaic symptoms were observed, PVYO dominated the infection although PVYNTN was detected in some cells. As the infection progressed and vein necrosis developed, PVYNTN was prevalent. Co-localization of PVYO and PVYN was also observed in epidermal cells of potato leaves with most cells infected with both viruses. Furthermore, two strains could be detected binding to the distal end of aphid stylets following virus acquisition from a plant infected with a strain mixture. These data are in contrast with the traditional belief of spatial separation of two closely related potyviruses and suggest apparent non-antagonistic interaction between PVY strains that could help explain the multitude of emerging recombinant PVY strains discovered in potato in recent years.

show abstract

Preferential acquisition and inoculation of PVYNTN over PVYO in potato by the green peach aphid Myzus persicae (Sulzer)

Abstract: In the past decade, the incidence and distribution of the recombinant, tuber necrotic strain of

Cited by 26 publications

References 18 publications

Modelling Vector Transmission and Epidemiology of Co-Infecting Plant Viruses

Modelling Vector Transmission and Epidemiology of Co-Infecting Plant Viruses

The Epidemiology of Plant Virus Disease: Towards a New Synthesis

Different potato virus Y strains frequently co-localize in single epidermal leaf cells and in the aphid stylet

Contact Info

Product

Resources

About