| black currant reversion virus, a mite-transmitted nepovirus. | summary taxonomy: black currant reversion virus (brv) is the first identified mite-transmitted member of the genus nepovirus (family comoviridae). a few systematic studies have been performed to compare virus isolates from different geographical locations. physical properties: purified preparations contain two closely sedimenting centrifugal components (b and m for rna1 and rna2, respectively) at varying ratios, and occasionally a t component (for satellite rna). the brv capsids have a diameter ... | 2004 | 20565606 |
| the development of a pcr-based marker linked to resistance to the blackcurrant gall mite (cecidophyopsis ribis acari: eriophyidae). | gall mite (cecidophyopsis ribis) is the most serious pest of blackcurrant (ribes nigrum l.), causing the damaging condition known as 'big bud' and also transmitting blackcurrant reversion virus (brv) within and between plantations. the identification of resistant germplasm is at present a time-consuming and expensive process, dependent on field infestation plots. resistance based on gene ce introgressed from gooseberry has been used in uk breeding programmes for blackcurrant. using a bulked segr ... | 2009 | 18813905 |
| black currant reversion disease--the probable causal agent, eriophyid mite vectors, epidemiology and prospects for control. | black currant reversion disease and the vector of its causal agent, the black currant gall mite cecidophyopsis ribis, have been recognised for at least 100 years and are the two most damaging organisms of black currant crops world-wide. however, the molecular characterisation of these two organisms has begun to be determined in only the last few years. the probable causal agent of reversion disease, black currant reversion associated virus (brav), belongs to the genus nepovirus, has isometric pa ... | 2000 | 11137163 |
| a study of embryonic development in eriophyoid mites (acariformes, eriophyoidea) with the use of the fluorochrome dapi and confocal microscopy. | the embryonic development of four eriophyoid mite species, cecidophyopsis ribis, phytoptus avellanae, oziella liroi and loboquintus subsquamatus, has been studied with the use of fluorochrome dapi and confocal microscopy. the first three nuclear divisions occur on the egg periphery (the groups of 2, 4, and 6 nuclei have been recorded), while the biggest part of yolk remains undivided. after four or five nuclear divisions all nuclei are situated only in one sector of the embryo, while other secto ... | 2016 | 26530993 |
| evaluating an interpolation approach for modelling spatial variability in pest development. | air temperatures estimated by partial thin plate spline interpolation, or from the 'nearest station' (voronoi polygon method), were used to model the phenology of three pests of horticultural crops throughout england and wales. temperatures for a particularly hot (1976) and a particularly cold (1986) year were interpolated to a grid resolution of 1 km. estimates were made of the timing of spring emergence (cecidophyopsis ribis (westwood)), the maximum number of generations completed during the s ... | 2002 | 12088539 |
| analysis of eriophyid mite rdna internal transcribed spacer sequences reveals variable simple sequence repeats. | ribosomal dna internal transcribed spacers of the eriophyid mites cecidophyopsis ribis, c. selachodon, c. spicata, c. alpina, c. aurea, c. grossulariae and phylocoptes gracillis were amplified using pcr, cloned and sequenced. sequences for the its1 of cecidophyopsids were 92-99% homologous. cecidophyopsis inter-specific differences were found in seventeen simple sequence repeats (vssrs), fourteen point mutations and two indels. no intra-specific variation in vssrs was detected. a hypothetical st ... | 1997 | 9013252 |
| effects of soil applied benzimidazole fungicides on the behaviour of cecidophyopsis ribis and on the transmission of reversion virus. | | 1975 | 1147325 |