The barley yellow dwarf virus is transmitted to wheat by several species of cereal aphids. Barley yellow dwarf viruses represent one of the most economically important. Barley yellow dwarf virus bydv is a positive sense singlestranded rna virus. Effect of barley yellow dwarf virus infection on yield. Barley yellow dwarf virus translocation in wheat and oats. Documents about barley yellow dwarf virus bydv00 european union funding. The barley yellow dwarf viruses bydv are singlestranded rna with a molecular weight of 2. Barley yellow dwarf plant pathology university of kentucky. Burnette pa ed world perspectives on barley yellow dwarf virus. Barley yellow dwarf symptoms and management maryland. Since the control of the virus itself is not possible, tolerant barley genotypes are considered as the most effective approach to avoid yield losses. Distribution of barley yellow dwarf viruspav in the sub.
Sequence and organization of barley yellow dwarf virus. Barley yellow dwarf virus also called cereal yellow dwarf is caused by a group of closely related strains of a luteovirus. These include evidence supporting reclassification of bydvs into two genera. It is probably the most widely distributed and most destructive virus disease of cereals. Due to huge yield losses in agriculture, the virus is of high economic relevance. Studies on barley yellow dwarf virus bydv in wheat meixue zhou1, philip larkin2. The barley yellow dwarf virus bydv system provides another interesting example of virusvirus competition. These viruses can infect more than 150 different grass species including wheat, oats, barley, rice, and corn. The geographical distribution of bydv and its prevalence in p.
Barley yellow dwarf virus bydv is a viral disease occasionally impacting small grain crops in michigan, including wheat, oats and barley. In pennsylvania, the most common vectors of the barley yellow dwarf virus include the a english grain aphid, b oat birdcherry aphid, c greenbug, and d corn leaf aphid. An introduction to the evolutionary ecology of viruses. Barley yellow dwarf virus bydv, isolated from field susceptible, reactive, black hulless barley c. Virusfree aphids must acquire the barley yellow dwarf virus by feeding on diseased cereal or grass p lants for periods as short as 30 minutes more ty pically 12 to 48 hours bef ore they are capable of inoculating healthy plants. Barley yellow dwarf virus in oats may cause some minor early symptoms that look like nutrient deficiencies, herbicide injury or root rot, so it can be easy to overlook initially. Identification and characterization of wheatwheatgrass. Reliable detection and quantification of barley and cereal yellow dwarf viruses ydvs is a critical component in managing yellow dwarf diseases in small grain cereal crops. Host selectivity by barley yellow dwarf viruses bydv across different grass species was likewise reported. Barley yellow dwarf virus particles were used as a bait to identify aphid factors involved in virus recognition. Studies were conducted at fargo, north dakota from 1989 to 1990 to determine the effect of bydv infection. Although the aphid rhopalosiphum padi does not regularly transmit the mav isolate of barley yellow drawf virus from singly infected oats, it often transmits mav, together with the serologically unrelated rpv isolate, from plants doubly infected by mav and rpv. The virus is transmitted only by aphids in a persistent, circulative, nonpropagative manner duffus et al. Barley yellow dwarf virus bydv infection occurs frequently in barley in the upper midwest region of the united states.
The aphidtransmitted virus bydv infects practically all members of the graminae. Barley yellow dwarf virus in wheat integrated pest. Based on the symptoms we concluded this was due to a virus infection. Yellow dwarf virus ydv are caused by a range of related luteoviruses but in wheat bydvpav vectored mainly by the oat aphid r. Winter barley infected with barley yellow dwarf virus, burley area, may 1, 20. Selection of putative wheatgrasswheat translocation lines based on segregation ratios of progeny from girradiated seed using a standard phenotypic analysis resulted in a low 4% success rate of identifying barley yellow dwarf virus bydv resistant and susceptible translocation lines. Barley yellow dwarf virus 5 utr is a noncoding rna element containing structural elements required for translation of the viral genome. Barley yellow dwarf virus bydv is persistently transmitted by at least 18 species of aphids throughout the. Bydv and cydv infection decreases grain yield and also causes shrivelled grain. Barley yellow dwarf virus is a destructive viral disease that affects grain plants around the world. In the united states, yellow dwarf virus affects primarily wheat, barley, rice, corn and oats, often reducing yield by up to 25 percent. The virus is transmitted by aphids, and the taxonomy of the virus is based on genome organisation, serotype differences and on the primary aphid vector of each isolate. For more comprehensive coverage of barley yellow dwarf disease.
On the mechanism of persistence and distribution of barley yellow. Abstract three cultivars of soft red winter wheat were evaluated to determine the relationship between the incidence and time of infection by barley yellow dwarf virus bydv and yield. Regulation of barley yellow dwarf virus gene expression. For a threeyear period 20181211 to 20211210, eppo has been awarded an eu grant for. Occurrence of barley yellow dwarf viruses in oversummering. Ecology of barley yellow dwarf viruses in southeast queensland. Continuing to use this website means you agree to our use of cookies. General information about barley yellow dwarf virus bydv00 this website uses cookies our website uses cookies to ensure that we give you the best possible online experience. In the spring of 2002 increased reduced growth of barley was observed at many locations in croatia belje, daruvar, dakovo, kutjevo, nova gradiska, tovarnik, valpovo and zagreb.
Citeseerx document details isaac councill, lee giles, pradeep teregowda. Barley yellow dwarf virus bydv, a member of the luteoviruses, is a group of five closely related virus strains. Data from bioassays of field collected aphids, barley indicator plants exposed to natural conditions, and various types of aphid traps were used to describe the spread of barley yellow dwarf virus bydv in wheat and barley near prosser, washington. A novel approach to barley yellow dwarf virus bydv. Frontiers barley yellow dwarf virus infection leads to. Bioassays were also used to assess the relative importance of local vector species. Barley yellow dwarf byd is one of the most common diseases of cereal crops, caused by the phloem. Later the disease will cause yellow discoloration at the leaf tips, which in oats will then turn red or purple. Sward rj, kollmorgen jf 1989 the effects of the interaction of barley yellow dwarf virus and takeall fungus on the growth and yield of wheat. Barley yellow dwarf virus, cereal yellow dwarf virus hosts. Like most viruses, barley yellow dwarf virus bydv consists of an rna molecule surrounded by a protein coat. Barley yellow dwarf virus and cereal yellow dwarf virus. Strains of bydv differ serologically and in virulence, host range and vector specificity.
Barley yellow dwarf of wheat, oats, and barley ohioline. Barley yellow dwarf byd is an important virus disease that causes significant reductions in wheat yield. This disease is the most widely distributed and economically most important virus disease of wheat. Yellow dwarf viruses ydvs are a group of luteo and polero viruses that are obligately transmitted by aphids and are the most economically important viral. Plants along center pivot tire tracks are often the most severly affected. Barley yellow dwarf virus bydv was detected in both introduced and native grasses such as poa cookii. Perry kl, kolb fl, sammons b, lawson c, cisar g, ohm h. The ways in which the information in these genes is converted to the proteins the process of gene expression needed for virus. When plants are infected in earlier growth stages, stunting, reduced test weight and reduced grain yield are common. Unlike eukaryotic mrna, this virus lacks a 5 cap and a polya tail but still circularises its mrna through base pairing between two stem loops, one located in the 5 utr and the other within the 3 utr. Barley yellow dwarf virus grains, pulses and cereals.
A systematic search for viral infection was performed in the isolated kerguelen islands, using a range of polyvalent genusspecific pcr assays. Barley yellow dwarf virus in idaho cereal crops juliet m. For effective control of barley yellow dwarf virus through breeding, the. Bydv symptoms on oat leaves whole plants in the field. They infect wheat, barley, oats and grasses and are transmitted by aphids. Accurate serological tests for barley yellow dwarf virus are available from the plant diagnostic lab at kansas state university. The virus is then transmitted during subsequent feedings of greater than 4 hours. Evaluation of various methods for the detection of barley. Barley yellow dwarf viruses represent one of the most economically important and ubiquitous groups of plant viruses. Yield loss is greatest from infection early in the growing season which can be up to 80 percent in severe cases where a susceptible variety has become infected soon after sowing. Unfortunately, the options for treating barley yellow dwarf are limited, but its possible to slow the spread, thus minimizing the damage. Plants grow slowly and the discolouration develops further. Major symptoms of bydv infection in cereals include plant dwarfing and colour. Yield effects of barley yellow dwarf virus in soft red.
The 5,677 nucleotide genome contains five large open reading frames orfs. Life cycle the virus that causes barley yellow dwarf has a broad. The barley yellow dwarf virus disease on cereal crops in the netherlands. The yellow dwarf diseases of cereals have now been divided into two groups, barley yellow dwarf virus bydv and cereal yellow dwarf virus cydv. Pdf barley yellow dwarf virus and cereal yellow dwarf. Barley yellow dwarf virus an overview sciencedirect topics. Delayed planting and controlling aphid vector numbers with insecticides. Barley yellow dwarf virus bydv is a phloem limited virus that is persistently transmitted by aphids. Barley yellow dwarf virus and cereal yellow dwarf virus quantification by realtime polymerase chain reaction in resistant and susceptible plants. Barley yellow dwarf byd is a virus disease that can. Yield effects of barley yellow dwarf virus in soft red winter wheat. Pdf barley yellow dwarf virus infection bydv often results in substantial yield losses in susceptible cereal crops.
Barley yellow dwarf virus in oats gardening know how. Barley yellow dwarf byd is a worldwide virus disease of our most important grasses, including wheat, rice and maizedarcy, c. Various modifications of the tissueblot immunoassay tbia for the detection of barley yellow dwarf virus bydv, luteovirus were compared. Winter wheat triticum aestivum response to barley yellow. Proceeding of the international workshop cimmyt, medico, df mexico, pp. The aphid vectors the disease from one plant to another. Pdf barley yellow dwarf byd is a serious luteovirus disease that affects small grain production worldwide. The yield losses may vary year to year, and may range from 5 to 25 percent, depending upon the weather conditions. Similar results were obtained by using three different labelled molecules. They are the most important virus diseases of cereals worldwide. During summer and early autumn in 1989, barley yellow dwarf viruses bydv were detected by elisa in grasses. The virus barley yellow dwarf virus infects all cereals and many grasses. Barley yellow dwarf viruses barley yellow dwarf cabi.
Barley yellow dwarf is an economically important viral disease of small grains. Barley yellow dwarf byd disease occurs in most grain growing regions of the u. Mcvey at the usda cereal disease laboratory, soilborne wheat mosaic virus, wheat streak mosaic virus, and barley yellow dwarf virus data obtained from the uniform winter wheat southern regional performance nursery, 20002001 and field observations in ne. Once an aphid contracts the virus by feeding on an infected plant, it can transmit the virus for. These viruses are not seedborne and persist from one growing season to the next in oversummering grasses. Barley yellow dwarf virus bydv00documents eppo global. We do not use these to store personal information about you. Barley yellow dwarf virus bydv was recovered, using infectivity bioassays, from. The oat aphid is the most important aphid in the spread of the vims. The nucleotide sequence of the genomic rna of barley yellow dwarf virus, pav serotype was determined, except for the 5terminal base, and its genome organization deduced.
Although several genes and quantitative trait loci are known. Barley yellow dwarf virus bydv and cereal yellow dwarf virus cydv are found damaging cereal crops worldwide. Stephens soft white winter wheat infected with barley. Management suggestions for barley yellow dwarf virus.
The virus that causes barley yellow dwarf is spread by aphids. Vector specificity of the virus isolates appears to be a function of the virus capsid. The barley leaves were golden yellow and lagged in growth. In kentucky, the primary aphid transmitting bydv is the oat birdcherry aphid. There are many strains of the virus that vary in level and spectrum of. The viral genes are much more densely packed than typical genes on the dna of the host organism. Transmission of barley yellow dwarf virus isolates by the aphid. Effect of barley yellow dwarf virus infection on yield and.
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