Genetic analysis of the grapevine genotypes of the Russian Vitis ampelographic collection using iPBS markers

Cultivated grapevine (Vitis vinifera L. ssp. sativa D.C.) is one of the oldest agricultural crops, each variety comprising an array of clones obtained by vegetative propagation from a selected vine grown from a single seedling. Most clones within a variety are identical, but some show a different form of accession, giving rise to new divergent phenotypes. Understanding the associations among the genotypes within a variety is crucial to efficient management and effective grapevine improvement. Inter-primer binding-site (iPBS) markers may aid in determining the new clones inside closely related genotypes. Following this idea, iPBS markers were used to assess the genetic variation of 33 grapevine genotypes collected from Russia. We used molecular markers to identify the differences among and within five grapevine clonal populations and analysed the variation, using clustering and statistical approaches. Four of a total of 30 PBS primers were selected, based on amplification efficiency. Polymerase chain reaction (PCR) with PBS primers resulted in a total of 1412 bands ranging from 300 to 6000 bp, with a polymorphism ratio of 44%, ranging from 58 to 75 bands per group. In total, were identified seven private bands in 33 genotypes. Results of molecular variance analysis showed that 40% of the total variation was observed within groups and only 60% between groups. Cluster analysis clearly showed that grapevine genotypes are highly divergent and possess abundant genetic diversities. The iPBS PCR-based genome fingerprinting technology used in this study effectively differentiated genotypes into five grapevine groups and indicated that iPBS markers are useful tools for clonal selection. The number of differences between clones was sufficient to identify them as separate clones of studied varieties containing unique mutations. Our previous phenotypic and phenological studies have confirmed that these genotypes differ from those of maternal plants. This work emphasized the need for a better understanding of the genotypic differences among closely related varieties of grapevine and has implications for the management of its selection processes.Peer reviewe

Chloroplast genomes of

This article presents the structures of chloroplast genomes of three Vitis sylvestris Gmel. samples from Damanskaya population of the Krasnodar Territory. An expedition to the place where wild forest grapevine grows was made. After that, the selected leaves served as a source of chloroplasts. DNA was isolated from them and DNA libraries were prepared and sequenced. Genome assembly was carried out after selection of the most suitable reference sample at coverage of 35.0x. The genomes ranged in size from 159,900 to 160,887. Aligned chloroplast genomes were annotated with GeSeq and GeneMark.hmm. OGDRAW was used to visualize the structure of the genomes. GenBank search allowed to determine their belonging to V. sylvestris species. At the same time, a comparison of the genomes with each other showed the presence of minor differences in their structure

Study of the VvMybA1 gene allele state of some colored and uncolored grapevine varieties

As a result of the work, genetic markers were created that were used to identify alleles of the VvMybA1 genes, which control the anthocyanin color of berries in grape varieties. Using these markers, alleles were identified in grape varieties belonging to different ecologicalgeographical groups. In the process of work, alleles were sequenced and compared with the NCBI database in order to identify their state and their belonging to a specific type of structure. In addition, these sequences were compared with each other to reveal the structural features of varieties with and without color of berries. Single nucleotide polymorphisms, structural features, and deletions in the structure of alleles were revealed