Publications by authors named "alexandra V Amosova"

L. and L. are valuable and promising food crops for multi-purpose use that are distributed worldwide in temperate, subtropical, and tropical zones.

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The cosmopolitan genus L. (Fabaceae) is divided into sections , , and This genus includes many valuable medicinal, melliferous, and forage species. The species taxonomy and genome relationships within the sections are still unclear.

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The species of the genus are difficult for identification, and the genus is difficult for taxonomic treatment. The regions of 35S rRNA genes were studied for the species of the genus of different geographical origin with a method of sequencing by Sanger (ITS1-5.8S rRNA gene-ITS2, 14 species) and with a method of a locus-specific next-generation sequencing (NGS) on the Illumina platform (ITS1-5.

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The genus L. (Fabaceae) includes about 200 species of annual and perennial herbs distributed in Asia, Europe, North Africa, and North America. Many species of this genus are valuable medicinal, melliferous, and forage resources.

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Artificial hybrids between cultivated species and wild that possess genes for resistance to biotic and abiotic stresses can be important for oat breeding. For the first time, a comprehensive study of genomes of artificial fertile hybrids × and their parental species was carried out based on the chromosome FISH mapping of satellite DNA sequences (satDNAs) and also analysis of intragenomic polymorphism in the 18S-ITS1-5.8S rDNA region, using NGS data.

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The taxonomically challenging genus L. (Asteraceae) includes lots of medicinal species characterized by their high morphological and karyological variability. For the first time, a repeatome analysis of a valuable medicinal plant L.

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L. (Polemoniaceae) is a valuable medicinal herb with a wide spectrum of biological activities. Under natural conditions, the productivity of this species is rather low.

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High-copy tandemly organized repeats (TRs), or satellite DNA, is an important but still enigmatic component of eukaryotic genomes. TRs comprise arrays of multi-copy and highly similar tandem repeats, which makes the elucidation of TRs a very challenging task. Oxford Nanopore sequencing data provide a valuable source of information on TR organization at the single molecule level.

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The phylogeny of members of the family DC. ex Perleb has not been adequately studied. In particular, data on the phylogenetic relationship between Planch.

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The genus P. Beauv. (Poaceae) involves a group of widespread polymorphic species, and many of them are highly tolerant to stressful environmental conditions.

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The systematic knowledge on the genus L. (Fabaceae: Hedysareae) is still incomplete. The species from the section are valuable forage and medicinal resources.

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L. is a medicinal plant well-known as a valuable source of isoquinoline alkaloids, which has a variety of pharmacological properties including anti-viral and anti-bacterial effects. However, considerable intraspecific bio-morphological variability in complicates raw material identification and verification.

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Article Synopsis
  • Grasslands in the Arctic tundra are facing severe degradation due to climate change and resource over-exploitation, making it crucial to study the genetic structures of key pasture grass species for developing resilient forage cultivars.
  • Researchers conducted a molecular cytogenetic analysis of several insufficiently studied grass species, revealing their distribution across Eurasia and examining their karyotypes using advanced genetic techniques.
  • The study identified specific chromosomal features and rearrangements, providing insights into the genetic relationships among the species and their potential for adaptation in changing environments.
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Article Synopsis
  • * Mutant lines displayed significant variations in morphological and agronomic characteristics, producing high-protein, low-oil seeds with stable fatty acid content, making them suitable for animal feed.
  • * Despite some meiotic abnormalities, karyotype stability was generally maintained, suggesting that EMS mutagenesis can be an effective method for rapeseed improvement, but karyotype analysis is essential due to observed chromosomal changes in some mutant lines.
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The morphological, meiotic and chromosomal variability were studied in two cultivars of Calendula officinalis L. and their mutant lines obtained though chemical mutagenesis using diethyl sulphate (DES) (0.04%, 0.

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The ontogenesis and reproduction of plants cultivated aboard a spacecraft occur inside the unique closed ecological system wherein plants are subjected to serious abiotic stresses. For the first time, a comparative molecular cytogenetic analysis of L. () grown on board the RS ISS during the Expedition-14 and Expedition-16 and also plants of their succeeding (F1 and F2) generations cultivated on Earth was performed in order to reveal possible structural chromosome changes in the pea genome.

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Flax, L., is a valuable multi-purpose plant, and currently, its genome is being extensively investigated. Nevertheless, mapping of genes in flax genome is still remaining a challenging task.

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The genus Deschampsia P. Beauv (Poaceae) involves a group of widespread polymorphic species. Some of them are highly tolerant to stressful and variable environmental conditions, and D.

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Cultivated flax (Linum usitatissimum L.) is an important plant valuable for industry. Some flax lines can undergo heritable phenotypic and genotypic changes (LIS-1 insertion being the most common) in response to nutrient stress and are called plastic lines.

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Deschampsia antarctica Desv. (Poaceae) (2n = 26) is one of the two vascular plants adapted to the harshest environment of the Antarctic. Although the species is a valuable model for study of environmental stress tolerance in plants, its karyotype is still poorly investigated.

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Karyotypes of 3 diploid wheat species containing different variants of the A-genome, Triticum boeoticum (A(b)), T. monococcum (A(b)), and T. urartu (A(u)), were examined using C-banding and FISH with DNA probes representing 5S and 45S rDNA families, the microsatellite sequences GAAn and GTTn, the already known satellite sequences pSc119.

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The wide variation in chromosome number found in species of the genus Linum (2n = 16, 18, 20, 26, 28, 30, 32, 36, 42, 72, 84) indicates that chromosomal mutations have played an important role in the speciation of this taxon. To contribute to a better understanding of the genetic diversity and species relationships in this genus, comparative studies of karyotypes and genomes of species within section Syllinum Griseb. (2n = 26, 28) were carried out.

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