Cotton leafroll dwarf virus detected in Timor-Leste

Ray, Jane; Sharman, Murray; Quintao, Valente; Rossel, B.; Westaway, John; Gambley, Cherie

doi:10.1007/s13314-016-0217-2

Cited by 21 publications

(13 citation statements)

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“…In addition to Africa and South America, CLRDV has also been reported in Timor-Leste [ 14 ], Thailand [ 15 ], India [ 16 ], and from Soybean aphid ( Aphis glycines ) in China [ 17 ]. Recently, there have been several reports on the detection of CLRDV in the USA: Arkansas [ 18 ], Alabama [ 19 ], Florida [ 20 ], Georgia [ 21 ], Kansas [ 22 ], Louisiana [ 23 ], Mississippi [ 24 ], North Carolina [ 25 ], Oklahoma [ 26 ], South Carolina [ 27 ] and Texas [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

Genome analysis of cotton leafroll dwarf virus reveals variability in the silencing suppressor protein, genotypes and genomic recombinants in the USA

et al. 2021

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Cotton leafroll dwarf virus (CLRDV) is an emerging virus in cotton production in Georgia and several other Southeastern states in the USA. To better understand the genetic diversity of the virus population, the near complete genome sequences of six isolates from Georgia and one from Alabama were determined. The isolates sequenced were 5,866 nucleotides with seven open reading frames (ORFs). The isolates from Georgia were >94% identical with other isolates from the USA and South America. In the silencing suppressor protein (P0), at amino acid position 72, the isolates from Georgia and Alabama had a valine (V), similar to resistant-breaking ‘atypical’ genotypes in South America, while the Texas isolate had isoleucine (I), similar to the more aggressive ‘typical’ genotypes of CLRDV. At position 120, arginine (R) is unique to Georgia and China isolates, but absent in Alabama, Texas and South American isolates. Ten potential recombinant events were detected in the isolates sequenced. An increased understanding of CLRDV population structure and genetic diversity will help develop management strategies for CLRDV in the USA cotton belt.

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Section: Introductionmentioning

confidence: 99%

Genome analysis of cotton leafroll dwarf virus reveals variability in the silencing suppressor protein, genotypes and genomic recombinants in the USA

et al. 2021

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“…Therefore, should any of these viruses become established in cotton growing areas of QLD and NSW, and CLRV in such areas in the NT and WA, serious outbreaks would be expected. Indeed, CLRDV infects cotton in East Timor which is only a short distance from Australia's northern coastline [332], and in Thailand [333]. This highlights the biosecurity threat this virus poses to emerging cotton production regions in northern Australia (Figure 1).…”

Section: Biosecurity Threatsmentioning

confidence: 99%

Virus Diseases of Cereal and Oilseed Crops in Australia: Current Position and Future Challenges

Jones

Sharman

Trębicki

et al. 2021

Viruses

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This review summarizes research on virus diseases of cereals and oilseeds in Australia since the 1950s. All viruses known to infect the diverse range of cereal and oilseed crops grown in the continent’s temperate, Mediterranean, subtropical and tropical cropping regions are included. Viruses that occur commonly and have potential to cause the greatest seed yield and quality losses are described in detail, focusing on their biology, epidemiology and management. These are: barley yellow dwarf virus, cereal yellow dwarf virus and wheat streak mosaic virus in wheat, barley, oats, triticale and rye; Johnsongrass mosaic virus in sorghum, maize, sweet corn and pearl millet; turnip yellows virus and turnip mosaic virus in canola and Indian mustard; tobacco streak virus in sunflower; and cotton bunchy top virus in cotton. The currently less important viruses covered number nine infecting nine cereal crops and 14 infecting eight oilseed crops (none recorded for rice or linseed). Brief background information on the scope of the Australian cereal and oilseed industries, virus epidemiology and management and yield loss quantification is provided. Major future threats to managing virus diseases effectively include damaging viruses and virus vector species spreading from elsewhere, the increasing spectrum of insecticide resistance in insect and mite vectors, resistance-breaking virus strains, changes in epidemiology, virus and vectors impacts arising from climate instability and extreme weather events, and insufficient industry awareness of virus diseases. The pressing need for more resources to focus on addressing these threats is emphasized and recommendations over future research priorities provided.

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“…Later, the full‐length viral genome was sequenced and characterized (Distefano et al., 2010). Since then, the virus has been reported in cultivated cotton (Mukherjee et al., 2012) and chickpea (Reddy & Kumar, 2004) from India, Thailand (Sharman et al., 2015), East Timor (Ray et al., 2016), and Uzbekistan (NCBI GenBank MK461137). Although not from plant hosts, the virus was also detected from soybean aphids ( Aphis glycines ) collected from soybean in China (Feng et al., 2017).…”

Section: Cotton Leafroll Dwarf Virus Historymentioning

confidence: 99%

Cotton Leafroll Dwarf Disease: An Emerging Virus Disease on Cotton in the U.S.

2021

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Features I n 2017, symptoms of leaf crinkling, downward curling, and deformation resembling virus-like diseases were observed in Alabama. Since there was a high incidence of whitefly in the fields where the symptoms were observed, they were tested for the presence of whitefly-transmitted viruses; however, none were detected. In 2017, cultivated cotton in Alabama was affected with an estimated economic loss of $19 million. Further investigations revealed the association of an aphid-transmitted RNA virus with symptomatic plants. Partial gene sequences of the virus identified as cotton leafroll dwarf virus, the same virus associated with a disease of cotton commonly known as "cotton blue disease" prevalent in South American and Asian countries (Avelar et al., 2019). In late 2018, extensive surveys were carried out, and the presence of the virus was confirmed from 23 counties in AL and 14 counties in GA (Figure 1). The virus's presence was also confirmed from other cotton-growing regions in the Southeast,

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Cotton leafroll dwarf virus detected in Timor-Leste

Cited by 21 publications

References 7 publications

Genome analysis of cotton leafroll dwarf virus reveals variability in the silencing suppressor protein, genotypes and genomic recombinants in the USA

Genome analysis of cotton leafroll dwarf virus reveals variability in the silencing suppressor protein, genotypes and genomic recombinants in the USA

Virus Diseases of Cereal and Oilseed Crops in Australia: Current Position and Future Challenges

Cotton Leafroll Dwarf Disease: An Emerging Virus Disease on Cotton in the U.S.

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