Tatyana Kritskaya- PhD
- Principal Investigator at Saratov State University
Tatyana Kritskaya
- PhD
- Principal Investigator at Saratov State University
About
37
Publications
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Introduction
Currently, I am working on the study of the gene pool, evolutionary history, and methods of conservation of rare and endangered plant species in European Russia.
Current institution
Additional affiliations
August 2012 - present
Education
August 2013 - August 2016
September 2004 - August 2009
Publications
Publications (37)
Kashin AS, Parkhomenko AS, Kondratieva AO, Kritskaya TA, Bogoslov AV, Shilova IV. 2024. Diversity of the genus Chondrilla L. (Asteraceae) in Eastern Europe. Biodiversitas 25: 1901-1910. The genus Chondrilla (Asteraceae) has a complex taxonomic structure due to widespread apomictic reproduction. This study aimed to identify the variability and clari...
The leaf blade’s shape of 665 samples of 18 taxa from the genus Delphinium was analyzed using geometric morphometrics method. Within the subgenus Delphinastrum, D. elatum and, to a lesser extent, D. uralense were relatively well separated by canonical analysis, while D. litwinowii, D. pubiflorum, D. duhmbergii, and D. subcuneatumwere not actually s...
The article presents a phytocoenotic description of 23 plant communities with Colchicum bulbocodium subsp. versicolor studied during the period of mass flowering in 2014–2018. It was found that, across the Lower Volga region, the studied communities with C. bulbocodium subsp. versicolor are mostly confined to the slopes of south- and east-facing ar...
Polychromous Tulipa suaveolens Roth has a vast range comprising almost the whole Ponto-Cas-pian Steppe and extending from the south-east of Ukraine to western Kazakhstan. The species is famous forhigh variation in flower colour, but the pattern of its geographical distribution remains unclear. In the presentarticle, T. suaveolens flower colour vari...
The range of the polychromous Tulipa suaveolens Roth comprises almost the whole Ponto-Caspian Steppe, from the south-east of Ukraine to western Kazakhstan. High variation in flower color is a unique feature of this species, but features of its geographical distribution remain unclear. We studied T. suaveolens tepal color variation in 56 natural pop...
In the present article, we evaluated the genetic diversity of 216 specimens from 22 natural T. suaveolens localities in the Russia and Kazakhstan using ISSR (Inter Simple Sequence Repeat) method. The analysis of the biogeographical distributional pattern of the revealed genetic groups supported our hypothesis that the evolution and distribution of...
Morphological and phylogenetic (nrITS barcode) analyses are conducted to clarify the taxonomic status of 10 Delphinium species (D. cuneatum, D. dictyocarpum, D. duhmbergii, D. elatum, D. litwinowii, D. pubiflorum, D. puniceum, D. sergii, D. subcuneatum, D. uralense) occurring in the South-East of European Russia. The morphometric analysis is carrie...
Inter simple sequence repeats (ISSR) analysis revealed significant polymorphism in Tulipa suaveolens Roth (= T. schrenkii Regel) populations in the Crimea and the adjacent territories of Russia. In terms of the number of polymorphic ISSR fragments, these populations far exceed the previously studied populations in the Lower and Middle Volga regions...
Tulipa suaveolens Roth is a decorative bulbous, polycarpic species in the Liliaceae family. Currently, the species populations are declining due to the degradation of natural steppes. In the present article, we evaluated the genetic diversity of 216 specimens from 22 natural T. suaveolens localities in the European part of the species range using 1...
Despite the morphological correspondence between the regenerated and natural Tulipa suaveolens plants, the ISSR analysis identified a relatively high degree of somaclonal variability between them.
A map of the sampling points and the barriers between the groups of populations of Tulipa suaveolens defined by SAMOVA
Phylogenetic tree resulting from a Bayesian analyses of the cpDNA haplotypes of Tulipa suaveolens. Tulipa julia were used as outgroup taxa. Bayesian posterior probabilities (>50%) above branches, bootstrap support (>50%) below branches
Extra large specimens of Tulipa suaveolens found in natural population. The length is in centimeters
Divergence time estimates and ancestral range reconstruction (M1) for the Tulipa suaveolens based on ITS sequences of 19 taxa. Maximum clade credibility tree for divergence times with mean substitution rate according to Kay et al. (2006). The 95% highest posterior density (HPD>50%) estimates for each node are represented by bars
Geographic origin, GenBank accession numbers, ITS and cpDNA haplotypes and flower color in the investigated specimens Tulipa suaveolens
The administrative map of the sampling points of Tulipa suaveolens
Overview photos of some natural populations of Tulipa suaveolens. Detailed information on each of the populations is available in Online resource 1
Phylogenetic tree resulting from a Bayesian analyses of the ITS sequences of the genus Tulipa. Species from the related genus Erythronium were used as outgroup taxa. Bayesian posterior probabilities (>50%) above branches, bootstrap support (>50%) below branches
30 populations of six Delphinium L. taxa (D. pubiflorum, D. litwinowii, D. duhmbergii, D. subcuneatum, D. sergii, and D. puniceum) were studied in the Ulyanovsk, Saratov, Samara, Volgograd, Astrakhan, Voronezh, Rostov, Penza and Tambov regions as well as in the Republics of Kalmykia and Mordovia in order to reveal features of their ontogenetic and...
Polychromatic Tulipa suaveolens occurs over a vast territory ranging from the Crimea to eastern Kazakhstan. Its phylogenetic relationship to cultivated T. gesneriana is still under discussion. We used sequences from the psbE–petL region of chloroplast DNA and the complete internal transcribed spacer of nuclear ribosomal DNA to examine the genetic v...
Background. The current natural habitat of Tulipa suaveolens Roth rapidly decreases. In order to work out the strategy of the species’ preservation, evaluation of its intra and
interpopulation polymorphism is required.
Materials and methods. Molecular-genetic ISSR markers were used to analyze 125 samples from 10 populations of T. suaveolens occurr...
We studied genetic diversity in 54 populations of nine species of the genus Chondrilla (C. acantholepis, C. ambigua, C. brevirostris, C. canescens, C. graminea, C. juncea, C. laticoronata, C. latifolia, and C. pauciflora) from SE European Russia and the neighboring territories of NW Kazakhstan. Analyses of the trnT–trnF region of plastid DNA and th...
The research was aimed at regenerating the Tulipa suaveolens Roth plants in vitro, examining their morphogenesis, and evaluating the plants’ genetic stability using molecular ISSR markers. Specimens of two genetically contrasting populations of protected T. suaveolens species were introduced into in vitro culture. Seedlings obtained from rape seeds...
ISSR analysis revealed significant polymorphism in Tulipa suaveolens Roth. (= T. schrenkii Regel) populations in the Crimea and the adjacent territories of Russia. In terms of the number of polymorphic ISSR fragments, these populations far exceed the previously studied populations in the Lower and Middle Volga regions and the Orenburg oblast. The g...
The article is concerned with the difficulties of species identification of the Delphinium (Ranunculaceae) herbarium specimens gathered in the Lower Volga region (Astrakhan, Volgograd and Saratov oblasts) and the adjacent regions (Penza, Samara, Tambov and Ulyanovsk oblasts and the Republic of Mordovia). The specimens from a number of herbaria (MW,...
Based on Inter Simple Sequence Repeats (ISSR), we examine polymorphism in populations of Hieracium × robustum (Asteraceae) – the host of gall-making Aulacidea hieracii (Hymenoptera, Cynipidae). In each population, we study H. × robustum specimens with and without stem galls induced by gall wasps. It is revealed that individual gall-free plants have...
The vitality of 38 Tulipa gesneriana populations from the Lower Volga region and adjacent territories has been monitored in the course of a four-year study (2013–2016). The significant variability of this parameter, which correlated with certain geographical trends, has been shown within the surveyed territory. Two population clusters differing by...
The article examines the genetic diversity in 54 populations of 9 Chondrilla species (C. acantholepis, C. ambigua, C. brevirostris, C. canescens, C. graminea, C. juncea, C. laticoronata, C. latifolia, and C. pauciflora) in European Russia. Plastid DNA segments trnT–trnF are selected as markers. Reconstruction of evolutionary networks based on the p...
The method of ISSR analysis was employed to study the genetic diversity of 31 Tulipa suaveolens Roth natural populations located in the north and north-east of its range in the European Russia. Ten ISSR primers were used. In terms of polymorphic markers ratio, the populations fall into two categories: 1) the ones with low variability of 0.07—0.53;...
The article is the first to report the use of inoculation of a calcicole plant species, Silene cretacea Fisch. ex Spreng, by the rhizobacterium Azospirillum brasilense Sp245 to optimize the plant clonal micropropagation. Using enzyme immunoassay, fluorescence microscopy, and bacteriological plating, we confirmed the colonization by the bacteria of...
The vitality of 38 Tulipa gesneriana populations in the Lower Volga region and adjacent territories was monitored during four agricultural seasons (2013 – 2016). A significant variability of this parameter, correlated with certain geographical trends, is shown within the territory surveyed. Two population clusters were revealed, differing by opposi...
The features of the formation of microshoots in in vitro culture of Silene cretacea—endangered species
with narrow ecological amplitude, which is a promising source of medicinal raw materials—were studied.
It was demonstrated that, at the micropropagation step, basic Woody Plant Medium containing vitamins
according to Murashige and Skoog and supple...
Using the method of ISSR analysis, the genetic diversity of 18 natural populations of Tulipa gesneriana L. from the north of the Lower Volga region was examined. The ten ISSR primers used in the study provided identification of 102 PCR fragments, of which 50 were polymorphic (49.0%). According to the proportion of polymorphic markers, two populatio...
The article presents the results of work on preservation of plant tissues and organs of rare and endangered species in conditions of slow growth. Special attention is paid to modeling objects, Silene cretacea and Potentilla volgarica – obligate calcifythes enlisted in the Red book of the Russian Federation. Slower growth of the explants was provide...
Questions
Question (1)
My colleagues and I have done work on the polymorphism of flower color in one of the higher plant groups. But, unfortunately, it was rejected due to incorrect statistical analysis. We are just learning to work in R and none of us have worked with these packages. And at this stage the task looks impossible. Maybe there are researchers well versed in these packages and models, and interested in a joint publication?
