Self-incompatibility (SI) is a genetic mechanism in many flowering plants by which generative reproduction prevented. The self-incompatibility caused the functions of cell controlled genes called S or genes. results decreased pollination and ultimately yield loss. In apple (Malus domestica L.), multi-allelic S-locus. Approaches S-glycoprotein profiles allele-specific PCR methods using gene for ...

The lager brewing yeasts, Saccharomyces pastorianus (synonym Saccharomyces carlsbergensis), are allopolyploid, containing parts of two divergent genomes. Saccharomyces cerevisiae contributed to the formation of these hybrids, although the identity of the other species is still unclear. The presence of alleles specific to S. cerevisiae and S. pastorianus was tested for by PCR/RFLP in brewing yea...

Recently diverged species typically have incomplete reproductive barriers, allowing introgression of genetic material from one species into the genomic background of the other. The role of natural selection in preventing or promoting introgression remains contentious. Because of genomic co-adaptation, some chromosomal fragments are expected to be selected against in the new background and resis...

An Escherichia coli Hfr strain in which three negative chromosomal alleles (leu(-), arg(-), and mtl(-)) were closely linked to three positive alleles (ara(+), rha(+), and xyl(+), respectively) was employed in matings with a Salmonella typhosa recipient. The detected expression of the negative E. coli alleles in S. typhosa hybrids selected for receipt of an associated positive E. coli marker was...

OBJECTIVE To assess the relationship between HLA-DRB1 genotypes and the progression of bone destruction in Japanese patients with RA. METHODS The HLA-DRB1 alleles were determined by polymerase chain reaction and allele specific oligonucleotide probe techniques in 160 Japanese patients with RA. HLA-DR 0101, 0401, 0404, 0405, 1001 and 1402 were regarded as susceptible alleles of RA according to...

primary antibody deficiencies are the most frequent primary immunodeficiency disorders. bronchiectasis as a feature of these disorders may be developed due to some factors such α-1-antitrypsin deficiency. in order to determine the prevalence of two common α-1-antitrypsin deficiency alleles (pi*z and pi*s) in iranian patients with antibody deficiency, this study was performed. the prevalence of ...

both genetic and environmental factors seem to play role in the etiology of meniere's disease (md). several genes may be involved in susceptibility of md including human leukocyte antigens (hla). the associations between md and hla alleles have been previously studied in other populations and certain hla alleles were shown to be predisposing. the aim of this study was to determine the associati...