Novel circular DNA viruses associated with Apiaceae and Poaceae from South Africa and New Zealand

Richet, Cécile; Kraberger, Simona; Filloux, Denis; Bernardo, Pauline; Harkins, Gordon William; Martin, Darren P.; Varsani, Arvind

doi:10.1007/s00705-018-4031-3

Cited by 12 publications

(6 citation statements)

References 40 publications

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“…Babuviruses are transmitted through finite aphid vectors Pentalonia nigronervosa and Micromyzus kalimpongensis (Almeida et al, 2009;Bressan and Watanabe, 2011;Ghosh et al, 2015;Halbert and Baker, 2015;Qazi, 2016; Figure 4E). In contrast, nanoviruses can be transmitted by various aphid species, in particular Aphis craccivora, A. gossypii, Acyrthosiphon pisum, Myzus persicae, and Macrosiphum euphorbiae are the most effective vector species for nanoviruses (Sano et al, 1998;Sicard et al, 2015;Gaafar et al, 2016;Richet et al, 2019; Figure 4F). Among these aphid species, A. craccivora is the most abundant and efficient vector, which transmits MDV, SCSV, FBNYV and FBNSV from plant to plant (Franz et al, 1998;Sicard et al, 2015;Gallet et al, 2018;Webster et al, 2018).…”

Section: Vector Transmissionmentioning

confidence: 99%

Nanovirus Disease Complexes: An Emerging Threat in the Modern Era

Lal

Sanjaya

et al. 2020

Front. Plant Sci.

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Multipartite viruses package their genomic segments independently and mainly infect plants; few target animals. Nanoviridae is a family of multipartite single-stranded DNA plant viruses that individually encapsidate single-stranded DNAs of approximately 1 kb and transmit them through aphids without replication in the aphid vectors, thereby causing important diseases of leguminous crops and banana. Significant findings regarding nanoviruses have recently been made on important features, such as their multicellular way of life, the transmission of distinct encapsidated genome segments through the vector body, evolutionary ambiguities, mode of infection, host range and geographical distribution. This review deals with all the above-mentioned features in view of recent advances with special emphasis on the emergence of new species and recognition of new host range of nanoviruses and aims to shed light on the evolutionary linkages, the potentially devastating impact on the world economy, and the future challenges imposed by nanoviruses.

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Section: Vector Transmissionmentioning

confidence: 99%

Nanovirus Disease Complexes: An Emerging Threat in the Modern Era

Lal

Sanjaya

et al. 2020

Front. Plant Sci.

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“…Since 2010, studies using HTS to identify plant viruses have been conducted in 20 African countries, reviewed by Ibaba et al [35]. At least 29 host plants, including various economically important crops, ornamentals, and medicinal plants representing 18 different families have been used in HTS for virus detection and diagnostics [32,35]. The studies resulted in the detection of previously known and novel viruses from almost any host, confirming the wide distribution of plant viruses in different ecosystems and suggesting the importance of knowledge on the diversity, prevalence, and spatial distribution of viruses.…”

Section: Verbena Officinalis L Silene Latifolia Poir Rorippa × Prostrata Robinia Pseudoaccacia Lmentioning

confidence: 99%

“…The studies resulted in the detection of previously known and novel viruses from almost any host, confirming the wide distribution of plant viruses in different ecosystems and suggesting the importance of knowledge on the diversity, prevalence, and spatial distribution of viruses. For example, four novel circular replication-associated protein (Rep)-encoding single-stranded (CRESS) DNA viruses were detected in wild and medicinal plant samples from Poaceae and Apiaceae species collected in Darling in the Western Cape region of South Africa [32].…”

Section: Verbena Officinalis L Silene Latifolia Poir Rorippa × Prostrata Robinia Pseudoaccacia Lmentioning

confidence: 99%

Metagenomic Studies of Viruses in Weeds and Wild Plants: A Powerful Approach to Characterise Variable Virus Communities

Hasiów‐Jaroszewska

Boezen

Zwart

2021

Viruses

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High throughput sequencing (HTS) has revolutionised virus detection and discovery, allowing for the untargeted characterisation of whole viromes. Viral metagenomics studies have demonstrated the ubiquity of virus infection—often in the absence of disease symptoms—and tend to discover many novel viruses, highlighting the small fraction of virus biodiversity described to date. The majority of the studies using high-throughput sequencing to characterise plant viromes have focused on economically important crops, and only a small number of studies have considered weeds and wild plants. Characterising the viromes of wild plants is highly relevant, as these plants can affect disease dynamics in crops, often by acting as viral reservoirs. Moreover, the viruses in unmanaged systems may also have important effects on wild plant populations and communities. Here, we review metagenomic studies on weeds and wild plants to show the benefits and limitations of this approach and identify knowledge gaps. We consider key genomics developments that are likely to benefit the field in the near future. Although only a small number of HTS studies have been performed on weeds and wild plants, these studies have already discovered many novel viruses, demonstrated unexpected trends in virus distributions, and highlighted the potential of metagenomics as an approach.

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“…Since SpOrbCV-1 shares similar genomic characteristics with unclassified viruses reported from other spider species, dragonflies, and bat feces [2], we further explored the genomic sequences of circularisviruses, named after the first virus reported from this group (dragonfly circularisvirus) [27], and identified common features among this novel group of CRESS DNA viruses. Reciprocal BLAST searches led to the identification of panicum ecklonii-associated virus (accession number MH425571), a virus reported from the leaf tissue of a perennial grass [41], as an additional circularisvirus. Therefore, circularisviruses include viruses identified in terrestrial arthropods, animal feces, and plants (Table 2).…”

Section: Sporbcv-1 Represents a Novel Group Of Cress Dna Virusesmentioning

confidence: 99%

Prevalence of a vertically transmitted single-stranded DNA virus in spinybacked orbweavers (Gasteracantha cancriformis) from Florida, USA

Rosario

Mettel

Greco

et al. 2019

Journal of General Virology

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Spiders (Order Araneae, Class Arachnida) are an important group of predatory arthropods in terrestrial ecosystems that have been recently identified as an untapped reservoir of single-stranded (ss)DNA viruses. Specifically, spiders harbor a diversity of ssDNA viruses encoding a replicationassociated protein (Rep) within a circular genome. However, little is known about the ecology of novel circular Rep-encoding ssDNA (CRESS DNA) viruses. Here we investigated two CRESS DNA viruses recently identified in spinybacked orbweavers (Gasteracantha cancriformis), namely spinybacked orbweaver circular virus (SpOrbCV) 1 and 2. SpOrbCV-1 was detected in the majority (>65%) of spider specimens from all life stages, including eggs, spiderlings, and adults, demonstrating that this virus is active within spinybacked orbweavers. In contrast, SpOrbCV-2 was only detected in adults at a lower (36%) prevalence. Since we also detected SpOrbCV-2 in other spider species and this virus has been reported from a dragonfly, we suggest that SpOrbCV-2 is accumulated in these predators through common insect prey. The prevalence of SpOrbCV-1 in collected specimens allowed us to design assays to characterize this virus, which represents a new group of CRESS DNA viruses, the "circularisviruses". To our knowledge, SpOrbCV-1 is the first example of a vertically transmitted virus in spiders, which may explain its high prevalence in spinybacked orbweavers. Since vertically transmitted viruses infecting insects (Class Insecta) can manipulate their host behavior and physiology, future studies should investigate the ecological role of vertically transmitted viruses in spiders.

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Novel circular DNA viruses associated with Apiaceae and Poaceae from South Africa and New Zealand

Cited by 12 publications

References 40 publications

Nanovirus Disease Complexes: An Emerging Threat in the Modern Era

Nanovirus Disease Complexes: An Emerging Threat in the Modern Era

Metagenomic Studies of Viruses in Weeds and Wild Plants: A Powerful Approach to Characterise Variable Virus Communities

Prevalence of a vertically transmitted single-stranded DNA virus in spinybacked orbweavers (Gasteracantha cancriformis) from Florida, USA

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