| comparison of the coat protein, movement protein and rna polymerase gene sequences of australian, chinese, and american isolates of barely yellow dwarf virus transmitted by rhopalosiphum padi. | barely yellow dwarf luteovirus-gpv (bydv-gpv) is a common problem in chinese wheat crops but is unrecorded elsewhere. a defining characteristic of gpv is its capacity to be transmitted efficiently by both schizaphis graminum and rhopaloshiphum padi. this dual aphid species transmission contrasts with those of bydv-rpv and bydv-sgv, globally distributed viruses, which are efficiently transmitted only by rhopaloshiphum padi and schizaphis graminum respectively. the viral rna sequences encoding the ... | 1998 | 9645205 |
| genetic regulation of polerovirus and luteovirus transmission in the aphid schizaphis graminum. | abstract sexual forms of two genotypes of the aphid schizaphis graminum, one a vector, the other a nonvector of two viruses that cause barley yellow dwarf disease (barley yellow dwarf virus [bydv]-sgv, luteovirus and cereal yellow dwarf virus-rpv, polerovirus), were mated to generate f1 and f2 populations. segregation of the transmission phenotype for both viruses in the f1 and f2 populations indicated that the transmission phenotype is under genetic control and that the parents are heterozygous ... | 2006 | 18943747 |
| virus transmission phenotype is correlated with host adaptation among genetically diverse populations of the aphid schizaphis graminum. | abstract schizaphis graminum is an important insect pest of several grain crops and an efficient vector of cereal-infecting luteoviruses and poleroviruses. we examined the virus transmission characteristics of several distinct populations and various developmental stages of the aphid. seven well-characterized s. graminum biotypes maintained at the usda-ars laboratory in stillwater, ok, and two biotypes maintained in new york (one collected in wisconsin and the other collected in south carolina) ... | 2002 | 18944022 |
| transmission of two viruses that cause barley yellow dwarf is controlled by different loci in the aphid, schizaphis graminum. | clonal populations of the aphid, schizaphis graminum, have been separated into biotypes based on host preference and their ability to overcome resistance genes in wheat. recently, several biotypes were found to differ in their ability to transmit one or more of the viruses that cause barley yellow dwarf disease in grain crops, and vector competence was linked to host preference. the genetics of host preference has been studied in s. graminum, but how this may relate to the transmission of plant ... | 2007 | 20302539 |
| genetics coupled to quantitative intact proteomics links heritable aphid and endosymbiont protein expression to circulative polerovirus transmission. | yellow dwarf viruses in the family luteoviridae, which are the causal agents of yellow dwarf disease in cereal crops, are each transmitted most efficiently by different species of aphids in a circulative manner that requires the virus to interact with a multitude of aphid proteins. aphid proteins differentially expressed in f2 schizaphis graminum genotypes segregating for the ability to transmit cereal yellow dwarf virus-rpv (cydv-rpv) were identified using two-dimensional difference gel electro ... | 2010 | 21159868 |
| species composition of aphid vectors (hemiptera: aphididae) of barley yellow dwarf virus and cereal yellow dwarf virus in alabama and western florida. | yellow dwarf is a major disease problem of wheat, triticum aestivum l., in alabama and is estimated to cause yield loss of 21-42 bu/acre. the disease is caused by a complex of viruses comprising several virus species, including barley yellow dwarf virus-pav and cereal yellow dwarf virus-rpv. several other strains have not yet been classified into a specific species. the viruses are transmitted exclusively by aphids (hemiptera:aphididae). between the 2005 and 2008 winter wheat seasons, aphids wer ... | 2011 | 21882679 |
| coupling genetics and proteomics to identify aphid proteins associated with vector-specific transmission of polerovirus (luteoviridae). | cereal yellow dwarf virus-rpv (cydv-rpv) is transmitted specifically by the aphids rhopalosiphum padi and schizaphis graminum in a circulative nonpropagative manner. the high level of vector specificity results from the vector aphids having the functional components of the receptor-mediated endocytotic pathways to allow virus to transverse the gut and salivary tissues. studies of f(2) progeny from crosses of vector and nonvector genotypes of s. graminum showed that virus transmission efficiency ... | 2007 | 17959668 |