Diversity of the coat protein‐coding region among <i>Ilarvirus</i> isolates infecting hop in Australia

Crowle, D. R.; Pethybridge, Sarah J.; Leggett, G. W.; Sherriff, LJ; Wilson, C. R.

doi:10.1046/j.1365-3059.2003.00918.x

Cited by 18 publications

(14 citation statements)

References 25 publications

(42 reference statements)

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“…Polyclonal antisera for HpLV and Chestnut mosaic virus were obtained from Dr DJ Barbara (Horticultural Research International, United Kingdom). The latter antiserum was used to detect the hop and intermediate serotypes of ApMV found in hop Crowle et al 2003), which in this study were not differentiated. Polyclonal antisera for AHLV was produced and gifted by Dr Cal Skotland (previously of Washington State University, Presser, Washington, United States).…”

Section: Methodsmentioning

confidence: 97%

“…The industry supplies both domestic and export markets, with locally-adapted triploid cultivars. Five viruses have been reported to be found in hop gardens in New Zealand ) including three carlaviruses (Hop mosaic virus (HpMV), Hop latent virus (HpLV), and American Hop latent virus (AHLV)), Arab is mosaic nepovirus-hop strain (ArMV-H), andApple mosaic ilarvirus hop (ApMV-H) and intermediate (ApMV-I) serotypes (Crowle et al 2003). The effect of these viruses on production is a function of the time that newly established gardens become infected (Pethybridge et al 2000(Pethybridge et al , 2004b and cultivar susceptibility (Pethybridge et al 2002b(Pethybridge et al , 2004b.…”

Section: Introductionmentioning

confidence: 99%

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Prevalence and incidence of viruses in New Zealand hop (Humulus lupulus) gardens

Pethybridge

Fletcher

Hay

et al. 2009

New Zealand Journal of Crop and Horticultural Science

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Viruses pose a significant constraint to hop (Humulus lupulus) production worldwide. ApMV and HpLV occurred at highest incidence, with 22 and 15 gardens, respectively, having >50% incidence. HpMV, ArMV-H, and AHLV occurred at lower incidence with only four, two, and one gardens, respectively, having >50% incidence. Results suggested the prevalence and incidence of viruses was high and of concern to the continued production of high yields in New Zealand.

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Section: Methodsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Prevalence and incidence of viruses in New Zealand hop (Humulus lupulus) gardens

Pethybridge

Fletcher

Hay

et al. 2009

New Zealand Journal of Crop and Horticultural Science

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“…ApMV was first reported in Malus domestica by Bradford and Joley (1933) in the USA. Two serotypes of ApMV are found infecting hops (Humulus lupulus L.), ApMV-H (hop) and ApMV-I (intermediate) (Crowle et al 2003). In hops ApMV is transmitted in gardens by mechanical inoculation, plant-to-plant contact, pruning and other contacts during agronomic practices (Pethybridge et al 2002a).…”

Section: Apple Mosaic Virusmentioning

confidence: 99%

Emerging virus and viroid pathogen species identified for the first time in horticultural plants in Finland in 1997-2010

Lemmetty¹,

Laamanen²,

Soukainen³

2008

AFSci

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Expansion and intensification of global trade in horticultural plants has increased the risk of spread of new alien pathogen species in the European Union (EU). Alien species of pathogenic viruses and viroids in horticultural plants have been introduced into Finland in infected plant material (plants, seedlings, cuttings, tubers, seeds). By 1997, about 30 virus species of horticultural plants had been detected in Finland. We aimed at compiling emerging new virus and viroid records during 1997-2010. Eight new viruses belonging to tospo-, potex-, poty-, tymo-, ilar-and allexiviruses were detected in horticultural plants: four occurred in greenhouse crops, two in vegetables and two in garden ornamentals outdoors. Five new findings of viroids were made in ornamental and vegetable greenhouse crops during 2008-2009. More rapid and accurate diagnostic methods have contributed to identifying new alien pathogens. Global trade seems to be the main reason for the introduction of the newest virus and viroid pathogens into Finland.

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“…Several ilarvirus species have been reported from Australia including Asparagus virus 2 (AV-2; Shimura et al 2013), Prune dwarf virus (PDV; Greber et al 1992), Prunus necrotic ringspot virus (PNRSV;Munro 1987), Apple mosaic virus (ApMV; Crowle et al 2003), Sunflower ringspot virus (SRSV: Dale and Behncken 1981;Thomas et al 1988) and TSV . SRSV has only been reported from Australia while the other ilarviruses are common in many other countries.…”

Section: Ilarvirus Diversity In Australiamentioning

confidence: 99%

“…The record of AV-2 by Shimura et al (2013) is the first report of this virus from Australia and was determined by testing imported asparagus samples collected from markets in Japan. There is partial genome sequence for three of the ilarviruses present in Australia including numerous sequences for isolates of ApMV (Crowle et al 2003), for one isolate of PNRSV (Sala-Rejczak and Paduch-Cichal 2013) and for one isolate of AV-2 (Shimura et al 2013). Reports of differing strains of TSV suggest there is significant diversity in TSV strains present in Australia but no molecular information to confirm phylogenetic relatedness was available.…”

Section: Ilarvirus Diversity In Australiamentioning

confidence: 99%

Epidemiology and genetic diversity of Tobacco streak virus and related subgroup 1 ilarviruses

Sharman¹

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A quarter of Australia's sunflower production is from the central highlands region of Queensland and is currently worth six million dollars ($AUD) annually. From the early 2000s a severe necrosis disorder of unknown aetiology was affecting large areas of sunflower crops in central Queensland, leading to annual losses of up to 20%. Other crops such as mung bean and cotton were also affected. This PhD study was undertaken to determine if the causal agent of the necrosis disorder was of viral origin and, if so, to characterise its genetic diversity, biology and disease cycle, and to develop effective control strategies.The research described in this thesis identified Tobacco streak virus (TSV; genus Ilarvirus, family Bromoviridae) as the causal agent of the previously unidentified necrosis disorder of sunflower in central Queensland. TSV was also the cause of commonly found diseases in a range of other crops in the same region including cotton, chickpea and mung bean. This was the first report from Australia of natural field infections of TSV from these four crops.TSV strains have previously been reported from other regions of Australia in several hosts based on serological and host range studies. In order to determine the relatedness of previously reported TSV strains with TSV from central Queensland, we characterised the genetic diversity of the known TSV strains from Australia. We identified two genetically distinct TSV strains from central Queensland and named them based on their major alternative hosts, TSV-parthenium from Parthenium hysterophorus and TSV-crownbeard from Verbesina encelioides. They share only 81 % totalgenome nucleotide sequence identity. In addition to TSV-parthenium and TSV-crownbeard from central Queensland, we also described the complete genomes of two other ilarvirus species. This proved that previously reported TSV strains, TSV-S isolated from strawberry and TSV-Ag from Ageratum houstonianum, were actually the first record of Strawberry necrotic shock virus from Australia, and a new subgroup 1 ilarvirus, Ageratum latent virus. Our results confirmed that the TSV strains found in central Queensland were not related to previously described strains from Australia and may represent new incursions. This is the first report of the genetic diversity within subgroup 1 ilarviruses from Australia.Based on field observations we hypothesised that parthenium and crownbeard were acting as symptomless hosts of TSV-parthenium and TSV-crownbeard, respectively. We developed strainspecific multiplex PCRs for the three RNA segments to accurately characterise the range of naturally infected hosts across central Queensland. Results described in this thesis show compelling evidence that parthenium and crownbeard are the major (symptomless) alternative hosts of TSV-4 parthenium and TSV-crownbeard. While both TSV strains had wide natural host ranges, the geographical distribution of each strain was closely associated with the respective distribution of their major alternative hosts. Both TSV strains were ...

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Diversity of the coat protein‐coding region among Ilarvirus isolates infecting hop in Australia

Cited by 18 publications

References 25 publications

Prevalence and incidence of viruses in New Zealand hop (Humulus lupulus) gardens

Prevalence and incidence of viruses in New Zealand hop (Humulus lupulus) gardens

Emerging virus and viroid pathogen species identified for the first time in horticultural plants in Finland in 1997-2010

Epidemiology and genetic diversity of Tobacco streak virus and related subgroup 1 ilarviruses

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