[Genetic control of gliadin components in wheat Triticum spelta L].

The componental composition of electrophoretic spectra of gliadin in Triticum spelta L. was studied. By analogy with common wheat T.

[Comparative analysis of diploid species of Avena L. using cytogenetic and biochemical markers: Avena pilosa M. B. and A. clauda Dur].

The diploid oat species containing the Cp genome - Avena pilosa and A. clauda - were studied using C-banding, fluorescence in situ hybridization with probes pTa71 and pTa794, and electrophoresis of grain storage proteins (avenins). Species with the C genome differed considerably from the species of the A genome group in the karyotype structure, heterochromatin type and distribution, relative positions of the 45S and 5S rRNA gene loci, and avenin patterns.

[Comparative analysis of diploid species of Avena l. using cytogenetic and biochemical markers: Avena canariensis baum et fedak and A. longiglumis dur].

The diploid oat species containing the A genome of two types (Al and Ac) were studied by electrophoresis of grain storage proteins (avenins), chromosome C-banding, and in situ hybridization with probes pTa71 and pTa794. The karyotypes of the studied species displayed similar C-banding patterns but differed in size and morphology of several chromosomes, presumably, resulting from structural rearrangements that took place during the divergence of A genomes from a common ancestor. In situ hybridization demonstrated an identical location of the 45S and 5S rRNA gene loci in Avena canariensis and A.

[Prevalence of widespread BRCA1 gene mutations in patients with familial breast cancer from St. Petersburg].

Ten variants different from the canonical nucleotide sequence (GenBank, U14680) has been identified when studying the mutation spectrum in gene BRCA1. Six of them (5382insC, 2963del10, 3819de15, 3875del4, 2274insA, and R1203X) cause premature termination of protein synthesis, thus predisposing to breast cancer. A missense mutation E1250K is presumed to be a factor of predisposition to cancer.

[On the question of using alleles of gliadin-coding loci as possible markers of adaptive ability in cultivars of spring wheat (Triticum aestivum L.) during seed germination].

Prolamine proteolysis is assumed to be among numerous adaptability factors in cereals. The patterns of gliadin proteolysis have been studied in 16 cultivars of spring wheat via analysis of electrophoretic spectra. Four proteolytic patterns have been identified.