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Pear blister canker viroid: host range and improved bioassay with two new pear indicators, Fieud 37 and Fieud 110


, : Pear blister canker viroid: host range and improved bioassay with two new pear indicators, Fieud 37 and Fieud 110. Plant Disease 83(5): 419-422

An investigation was conducted to improve the biological detection of pear blister canker viroid (PBCVd), which over a period of 2 to 3 years induces pear blister canker disease on the perry pear (Pyrus communis) cv. A20. PBCVd was not detected by dot blot hybridization or bioassay in any of the tested species of Amelanchier, Aronia, Cotoneaster, Crataegus, and Pyracantha. However, some species of Chaenomeles, Cydonia, and Sorbus, five out of 13 species of Malus, 15 Pyrus species, and 16 commercial pear cultivars were susceptible to PBCVd, although none developed symptoms. Only in perry pear seedlings did approximately 5% of the population react to infection with pure PBCVd strains by developing petiole, leaf, or bark necrosis 2 to 3 years (cv. A20) or 3 to 5 months (cv. Fieudiere) after inoculation. The selected Fieud 37 and Fieud 110 clones are proposed as PBCVd indicators to replace A20. Results from bioassays on the indicators and from detection by a PBCVd-cRNA probe were essentially in agreement except for some Malus species.

US$19.90

DOI: 10.1094/pdis.1999.83.5.419


Other references

Holtzman, L., 1997: Multiple canal morphology in the maxillary first molar: case reports. The presence of several canals in each root has been established as a normal morphology of the root canal system. Two case reports are presented to describe maxillary first molars with multiple canal system morphology in the palatal root. Both tee...

Hitchcock P.F.; Easter S.S.Jr, 1987: Evidence for centripetally shifting axons on the tectum of postmetamorphic rana pipiens. Investigative Ophthalmology & Visual Science 28(3 SUPPL): 335

Nabedryk, E.; Allen, J.; Murchison, H.; Taguchi, A.; Williams, J.; Woodbury, N.; Breton, J., 1993: FTIR spectroscopy of bacterial reaction centers Effect of mutations near the primary donor. Biophysical Journal 64(2 PART 2): A214

Lemon M.; Methven P.; Bhoola K., 1980: Metabolism of cyclic nucleotides in the guinea pig pancreas adenylate cyclase and guanylate cyclase. Adenylate cyclase from the guinea-pig pancreas was activated in a dose-dependent manner by both secretin and cholecystokinin-pancreozymin, but in contrast with results in other species the hormones were approximately equipotent. All other hormones...

Yoo, J-Min.; Jeong, J.; Yoo, K.; Lee, J-Chun.; Kim, W., 2008: Enrichment of the metallic components from waste printed circuit boards by a mechanical separation process using a stamp mill. Printed circuit boards incorporated in most electrical and electronic equipment contain valuable metals such as Cu, Ni, Au, Ag, Pd, Fe, Sn, and Pb. In order to employ a hydrometallurgical route for the recycling of valuable metals from printed cir...

Baros F.; Regnier S., 1984: Measurement of cross sections for (super 22úNa, (super 20-22úNe and (super 36-42úAr in the spallation of Mg, Al, Si, Ca and Fe; production ratios of some cosmogenic nuclides in meteorites. Journal de Physique 45(5): 855-861

Golushko, V.M.; Podleshchuk, V.A.; Ioffe, V.B., 1997: Quality of feeds and the productivity of animals. Feeding young bulls on silage, prepared from grass cut at the budding stage of growth, allowed a saving of 29% to be made in concentrate use. The energy cost of meat production was 15.9% lower when grass was cut 3 times than when it was cut twice....

Backman, W.David.; Bakhai, A., 2013: Spontaneous triple coronary artery dissection in a 78-year-old woman resolved angiographically with anticoagulation and medical management. A 78-year-old woman who presented with chest pain, on a background of hypertension and varicose veins, was found to have a non-ST segment elevation myocardial infarction with coronary angiography demonstrating dissections of all three major arteri...

Wayne, G.J., 1961: Work therapy in the Soviet Union. Mental Hospitals 12: 20-23

Kasimova, GA., 1975: On the fauna of soil nematodes in Azerbaidjan. Izvestiya Akad Nauk azerb SSR (Biol): 1: 79-84