Publications

in vitro interactions of the aphid endosymbiotic syml chaperonin with barley yellow dwarf virus.	barley yellow dwarf virus (bydv)-vector relationships suggest that there are specific interactions between bydv virions and the aphid's cellular components. however, little is known about vector factors that mediate virion recognition, cellular trafficking, and accumulation within the aphid. symbionins are molecular chaperonins produced by intracellular endosymbiotic bacteria and are the most abundant proteins found in aphids. to elucidate the potential role of symbionins in bydv transmission, w ...	1997	8985385
two distinct mechanisms regulate luteovirus transmission efficiency and specificity at the aphid salivary gland.	barley yellow dwarf luteovirus (bydv) particles are transmitted by aphids in a species-specific manner. transmission to plants requires that the virus particles be transported across the basal lamina and plasmalemma of the accessory salivary gland (asg). to characterize the role of the asg basal lamina in regulating bydv transmission, five aphid species were microinjected with purified new york isolates bydv-pav or -rpv. both viruses associated specifically only with the asg basal lamina. the ab ...	1997	9049397
seasonal abundance of aphids (homoptera: aphididae) in wheat and their role as barley yellow dwarf virus vectors in the south carolina coastal plain.	aphid (homoptera: aphididae) seasonal flight activity and abundance in wheat, triticum aestivum l., and the significance of aphid species as vectors of barley yellow dwarf virus were studied over a nine-year period in the south carolina coastal plain. four aphid species colonized wheat in a consistent seasonal pattern. greenbug, schizaphis graminum (rondani), and rice root aphid, rhopalosiphum rufiabdominalis (sasaki), colonized seedlingwheat immediately after crop emergence, with apterous colon ...	2001	11332833
vector specificity of barley yellow dwarf virus (bydv) transmission: identification of potential cellular receptors binding bydv-mav in the aphid, sitobion avenae.	two proteins (sam35 and sam50) isolated from head tissues of the aphid vector, sitobion avenae, were identified as potential receptors for barley yellow dwarf virus mav isolate (luteoviridae) based on mav virus overlay assays and immunoblots of urea sds 2-d gels. an anti-idiotypic antibody (mav4 anti-id) that mimics an epitope on mav virions and competes with mav in antibody binding assays also bound to sam50 and sam35 and to six additional proteins including a groel homolog. no mav-binding prot ...	2001	11448166
transmission of barley yellow dwarf virus by different forms of the apple grain aphid, rhopalosiphum fitchii (sand.).		1960	14429045
influence of aphid species and barley yellow dwarf virus on soft red winter wheat yield.	yield loss in soft red winter wheat, triticum aestivum l., caused by aphid-transmitted barley yellow dwarf virus (family luteoviridae, genus luteovirus, bydv) was measured over a 2-yr period in central missouri. rhopalosiphum padi (l.) was the most common and economically important species, accounting for > 90% of the total aphids. schizaphis graminum (rondani), rhopalosiphum maidis (fitch), and sitobion avenae (f.) made up the remainder of the aphids. aphid numbers peaked at wheat stem elongati ...	2005	16539127
role of accessory salivary glands in aphid transmission of barley yellow dwarf virus.	barley yellow dwarf virus (bydv) was consistently observed in the basal lamina and in plasmalemma invaginations only of accessory salivary glands in each of 20 aphids (sitobion avenae) reared on oats infected with the mav or rpv isolates of bydv. virus particles were not found in any of 13 aphids reared in parallel on healthy oats. the mav isolate was identified in aphids by indirect labeling with ferritin-conjugated antibody. virus particles were also observed within cytoplasmic vesicles and in ...	1980	18631658
vascular cell alterations and predisposed xylem infection in oats by inoculation with paired barley yellow dwarf viruses.	electron microscope studies of tissue doubly infected with sitobion avenae-specific and rhopalosiphum padi-specific variants of barley yellow dwarf virus revealed four types of alteration patterns in infected phloem cells not previously observed in tissue infected with either isolate alone. cells with alteration patterns similar to those in tissue singly infected with either variant were also present. double infections with isolates mav (s. avenae-specific) and rpv (r. padi-specific) predisposed ...	1981	18635099
analyzing and modeling temporal disease progress of barley yellow dwarf virus serotypes in barley fields.	abstract population dynamics of padi avenae (pav), macrosiphum avenae (mav), and rhopalosiphum padi (rpv) virus serotypes of barley yellow dwarf virus (bydv) and of their main aphid vectors were studied in winter barley (hordeum vulgare) fields for three successive years in western france. an epidemiological model of the spread of viruses in the field was developed based on vector populations as forcing variables and the population dynamics of each virus serotype. this model accurately simulated ...	2000	18944507
variation in the transmission of barley yellow dwarf virus-pav by different sitobion avenae clones in china.	fourteen sitobion avenae fabricius (hemiptera: aphididae) clonal lines (clones) originating from china were tested for their ability to transmit bydv-pav (one isolate from belgium and another from china) using wheat plants. by sequence analysis, the coat protein gene of bydv-pav-be was distinguishable from bydv-pav-cn. all of the clones could transmit bydv-pav, and the transmission varied from 24.42% to 66.67% with bydv-pav-be and from 23.55% to 56.18% with bydv-pav-cn. these data suggest that s ...	2013	23911295
comparison of the potential rate of population increase of brown and green color morphs of sitobion avenae (homoptera: aphididae) on barley infected and uninfected with barley yellow dwarf virus.	life tables of brown and green color morphs of the english grain aphid, sitobion avenae (fabricius) reared on barley under laboratory conditions at 20 ± 1°c, 65% ± 5% relative humidity and a photoperiod of 16 : 8 h (l : d) were compared. the plants were either: (i) infected with the barley yellow dwarf virus (bydv); (ii) not infected with virus but previously infested with aphids; or (iii) healthy barley plants, which were not previously infested with aphids. generally, both color morphs of s. a ...	2014	24382739
tripartite interactions of barley yellow dwarf virus, sitobion avenae and wheat varieties.	the tripartite interactions in a pathosystem involving wheat (triticum aestivum l.), the barley yellow dwarf virus (bydv), and the bydv vector aphid sitobion avenae were studied under field conditions to determine the impact of these interactions on aphid populations, virus pathology and grain yield. wheat varietal resistance to bydv and aphids varied among the three wheat varieties studied over two consecutive years. the results demonstrated that (1) aphid peak number (apn) in the aphid + bydv ...	2014	25184214