Sweet cherry (Prunus avium L.) is one of the most important stone fruit species in Bulgaria. The known to be susceptible more than 30 viruses. Among them are prune dwarf virus (PDV), prunus necrotic ringspot (PNRSV) and apple mosaic (ApMV), ilarviruses. Testing for these viruses required certification schemes order provide virus-tested propagated material fruit-growing industry prevent their di...

Many species in Rosaceae, Solanaceae, and Plantaginaceae exhibit S-RNase-based self-incompatibility (SI). In this system, the pistil and pollen specificities are determined by S-RNase and the S locus F-box protein, respectively. The pollen S determinant F-box protein in Prunus (Rosaceae) is referred to by two different terms, SFB (for S-haplotype-specific F-box protein) and SLF (for S locus F b...

The two commercially important fruiting cherries in North America are Prunus cerasus L. (sour) and P. avium L. (sweet). Carbon partitioning between individual organs, reproductive and vegetative, is dependent upon photoassimilate supply from photosynthesis and storage carbohydrate, as well as the ability of the translocation system to deliver these resources to sinks (Layne and Flore, 1995). Si...

Gametophytic self-incompatibility (GSI) is an outcrossing mechanism in flowering plants that is genetically controlled by 2 separate genes located at the highly polymorphic S-locus, termed S-haplotype. This study characterizes a pollen part mutant of the S(1)-haplotype present in sour cherry (Rosaceae, Prunus cerasus L.) that contributes to the loss of GSI. Inheritance of S-haplotypes from reci...

Recently, an S haplotype-specific F-box (SFB) gene has been proposed as a candidate for the pollen-S specificity gene of RNase-mediated gametophytic self-incompatibility in Prunus (Rosaceae). We have examined two pollen-part mutant haplotypes of sweet cherry (Prunus avium). Both were found to retain the S-RNase, which determines stylar specificity, but one (S3' in JI 2434) has a deletion includ...

Development, imaginal survivorship, adult longevity and fecundity of the predatory phytoseiid mite Euseius (Amblyseius) finlandicus Oudemans reared on seven different plant pollens were determined in the laboratory. The rationale behind these experiments was to assess the nutritional value and the possible effect on development and population dynamics of the mite. Mites were kept individually o...

This Commentary discusses the work of Neudecker et al. in this issue of the Biochemical Journal in which site-directed mutagenesis and NMR spectroscopy have been used to analyse in detail the IgE-binding capacity of two cross-reactive allergens: Apg1.0101 from celery ( Apium graveolens ) and Pru av 1 from cherry ( Prunus avium ), which are both members of the pathogenesis-related allergen famil...