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Publications related to Karyology (3,522)
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Article
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Karyotype and COI gene sequences of Chironomus melanotus Keyl, 1961 from the Yaroslavl region (Russia) were analyzed. A low level of chromosomal polymorphism has been confirmed, eventually eight banding sequences were found: melA1, melB1, melC1, melD1, melE1, melF1, and melG1; only melD2 was found in two larvae from the Sunoga river. Analysis of ph...
Preprint
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The blue mussel Mytilus chilensis is a key socioeconomic species inhabiting the southern coast of Chile. This endemic marine mussel supports a booming aquaculture industry, which entirely relies on artificially collected seeds from natural beds that are translocated to diverse physical-chemical ocean farming conditions. Furthermore, mussel producti...
Article
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Although recent molecular data has advocated the distinct position of Arvicola persicus De Filippi from Iran, karyotypic and differential chromosome staining data, informative tools to describe biological diversity, are lacking. Here we present the first description of the chromosome complement of A. persicus from its type locality in Sultaniyeh, s...
Article
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Three subspecies of Armeria arenaria are reported from Italy, two of which are considered endemic to the Apennines. The taxonomic value of these two taxa (A. arenaria subsp. marginata and A. arenaria subsp. apennina) is unclear. Moreover, the relationships between A. arenaria subsp. praecox and Northern Italian populations—currently ascribed to A....
Article
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Saensouk S, Saen-in N, Saensouk P. 2022. Cytogenetic study of five species of medicinal plants from Maha Sarakham Province, Thailand. Biodiversitas 23: 3593-3603. The cytogenetic study of five species of medicinal plants, namely Butomopsis latifolia (D. Don) Kunth, Iris domestica (L.) Goldblatt & Mabb., Limnocharis flava (L.) Buchenau, Murdannia lo...
Article
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Introduction. Obtaining spermatozoa in azoospermic men is a relevant objective. Quantitative karyological analysis of immature germ cells (QKA IGCs) allows to characterize the progression of spermatogenesis through different meiotic stages, that present some advantages in comparison with standard semen analysis (SSA) examination and testicular biop...
Article
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The high mountain perennial pea Vavilovia formosa (Steven) Fed., commonly known as beautiful vavilovia, is a rare species of the high alpine flora of Armenia bound to scree habitats. Populations of V. formosa in Armenia, as well as in other regions of the world, are endangered and need to be studied and preserved both in natural and ex situ conditi...
Chapter
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Pimpinella species are annual, biennial, and perennial semibushy aromatic plants cultivated for folk medicine, pharmaceuticals, food, and spices. The karyology and genome size of 17 populations of 16 different Pimpinella species collected from different locations in Iran were analyzed for inter-specific karyotypic and genome size variations. For ka...
Article
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Pinguicula vulgaris is one of the most common carnivorous plants in the Northern Hemisphere. It is a member of the species complex (P. vulgaris agg.) of which in Europe six taxa are recognized at different taxonomic ranks. One of them is P. bohemica, a taxon considered endemic to the Czech Republic, for which there are varied reports on its chromos...
Article
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Capsicum L. (tribe Capsiceae, Solanaceae) is an American genus distributed ranging from the southern United States of America to central Argentina and Brazil. The genus includes chili peppers, bell peppers, ajíes, habaneros, jalapeños, ulupicas and pimientos, well known for their economic importance around the globe. Within the Solanaceae, the genu...
Article
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The karyology of five species of Boesenbergia (B. collinsii, B. pulcherrima, B. rotunda, B. thorellii and B. xyphostachya) (Zingiberaceae) in Thailand are investigated. The chromosome number and karyotype formula of the five species are 2n=20 (8m+10sm+2st) in B. collinsii, 2n=36 (8m+18sm+10st) in B. pulcherrima, 2n=38 (18m+14sm+6st) in B. rotunda,...
Article
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Background Freshwater planarians of the genus Dugesia (Platyhelminthes, Tricladida, Dugesiidae) are distributed in a major part of the Old World and Australia, although until recently only very few species were known from China. Results Two new species of Dugesia from Southern China are described on the basis of an integrative taxonomic approach....
Article
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Pimpinella species are annual, biennial or perennial semi-bushy aromatic plants cultivated for folk medicine, pharmaceuticals, food and as spices. The karyology and genome size of 17 populations of 16 different Pimpinella species, collected from different locations of Iran, were analyzed for inter-specific karyotypic and genome size variations. For...
Article
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Abstract Chromosomal data and karyological relationships provides valuable contributions to understanding speciation and karyotypic phylogeny. Because of the large number of species, wide distribution, morphological differences and chromosomal variations, Geranium is an important genus for determining the relationship between chromosomal alteration...
Article
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The Bulgarian members of Chenopodiaceae are mainly ruderal and weed species; another part are halophytes. Over the last two decades, phylogenetic molecular studies have led to a number of taxo-nomic changes in the above mentioned family. Changes have also occurred in one of the largest genera-Chenopodium. The aim of the present study is to review t...
Article
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This paper provides new cytotaxonomic data on the genus Narcissus Linnaeus, 1753, in Algeria. Populations of seven taxa, N. tazetta Linnaeus, 1753, N. pachybolbus Durieu, 1847, N. papyraceus Ker Gawler, 1806, N. elegans (Haworth) Spach, 1846, N. serotinus sensu lato Linnaeus, 1753, including N. obsoletus (Haworth) Steudel, 1841, and N. cantabricus...
Article
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The comparative karyological analysis of Adonis vernalis and Adonis volgensis (Ranunculaceae) from 11 populations from Russia (Altai Territory, Novosibirsk Region, Republic of Khakassia) and Bulgaria was carried out. The somatic chromosome number was 2n = 16 in all studied plants. Chromosome sets of A. vernalis from the Altai Territory (near Sibirs...
Article
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Unisexual forms of lower vertebrates (fish, amphibians, and reptiles) reproduced by parthenogenesis, gynogenesis, or hybridogenesis are represented by diploids, triploids, or tetraploids, whose origin is associated with interspecific hybridization. Among fish species, the highest variability of unisexual polyploids was found in the genus Cobitis ....
Article
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Cytological studies in seven species of four genera of Commelinaceae from nature in Thailand revealed the following karyotypes: Callisia fragrans (striped leaves), 2n=12=6sm+6st; Commelina clavata, 2n=22=6m+10sm+6st; Co. erecta, 2n=56=22m+34sm; Co. obliqua 2n=30=8m+16sm+6st; Tradescantia fluminensis, 2n=12=6sm+6st; T. spathacea (green in all parts)...
Article
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Asparagus wild relatives could be a promising possibility to extent the genetic variability of garden asparagus and for new cultivars with favorable traits such as high yield stability, disease resistance and stress tolerance. In order to achieve an efficient use in breeding, a detailed cytogenetic characterization of the accessions is necessary. T...
Conference Paper
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In this study, karyological analysis were done, on 10 specimens of Oreochromis niloticus taken from experimental fish culture station of the University of Çukurova.
Article
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The freshwater plant water lettuce ( Pistia stratiotes L.) grows in warm climatic zones and is used for phytoremediation and biomass production. P. stratiotes belongs to the Araceae, an ecologically and structurally diverse early monocot family, but the phylogenetic relationships among Araceae members are poorly understood. Ribosomal DNAs (rDNAs),...
Article
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The genus Salvia is characterized by such small chromosomes, which has so far restricted the cytogenetic studies. Therefore, karyomorphological aspects of the chromosome complement were rarely analyzed in the genus. The aim of this study was to report the interspecific relationships and new chromosomal data in Salvia. The chromosomal records of 25...
Article
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The ubiquitous presence of rRNA genes in nuclear, plastid, and mitochondrial genomes has provided an opportunity to use genomic markers to infer patterns of molecular and organismic evolution as well as to assess systematic issues throughout the tree of life. The number, size, location, and activity of the 35S rDNA cistrons in plant karyotypes have...
Article
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Somatic chromosome numbers and karyotypes of five populations of Nerium oleander in Iran were determined. karyological studies showed that, all the studied populations were diploid (2n = 2x = 22). The present study is the first report of the karyotype characteristics of N. oleander. The highest values of mean chromosome length (1.45 µm) and haploid...
Article
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We performed a molecular and cytogenetic analysis on different Mantellinae species and revised the available chromosomal data on this group to provide an updated assessment of its karyological diversity and evolution. Using a fragment of the mitochondrial 16S rRNA, we performed a molecular taxonomic identification of the samples that were used for...
Article
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Karyological study of 644 newborns with Down syndrome revealed 37 carriers of translocation (5.7%). Translocations were inherited in 8 cases, they were sporadic in 17 cases, and in 12 cases the parents were not examined. Total mutation rate per gamete per generation and mutation rates of D;21 and G;21 were calculated according to two categories of...
Article
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The genus Urospermum is distributed in the Mediterranean region and Macaronesia, and has been introduced to other extra-Mediterranean regions. Although the two species constituting the genus, U. dalechampii and U. picroides, are frequently found together, hybrids have so far only been reported once, from Morocco. However, we found certain individua...
Article
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Chromosome numbers and karyotype morphology are given for four taxa of the Greek flora together with distributional and taxonomic notes. The chromosome number (2n = 16) and karyotype morphology of Allium sphaerocephalon subsp. arvense is reported for the first time in material from Kithnos island (Kiklades). The studied population of Cyclamen graec...
Article
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New advancements in tissue culture techniques have resulted in vitro propagation of several regenerations of horticultural crops. The somaclonal variation which occurs during plant tissue culture is a potential source for inducing new genetic variability in such crops. Several approaches have been utilized to ascertain the occurrence of somaclonal...
Article
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Comparative karyomorphological analyses of six out of the eight white-flowered species of Eranthis sect. Shibateranthis have been carried out. All studied specimens of E. byunsanensis, E. lobulata, E. pinnatifida and E. stellata had a somatic chromosome number 2n = 16 with basic chromosome number x = 8. On the contrary, E. tanhoensis and E. sibiric...
Article
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We present new data on cytology and karyology of representatives of the genus Alaria from the eastern Kamchatka. Since, despite morphological differences, taxa previously reported from this region as A. angusta and A. marginata turned out to be genetically identical and conspecific to A. esculenta, we substantiated their independence as intraspecif...
Article
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The occurrence of tandem repeats of telomeric-like motifs at intra-chromosomal regions, known as interstitial telomeric repeats (ITR), have drawn attention as potential markers of structural changes, which might convey information about evolutionary relationships if preserved through time. Building on our previous work that reported outstanding ITR...
Article
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Introduction. Robertsonian translocations (RT) are the most common balanced chromosomal abnormalities. RT carriers may have an increased risk of reproductive disorders (infertility, pregnancy loss and chromosomal abnormalities/multiple congenital abnormalities in offspring), but the mechanisms of gametogenesis and fertility disorders are still unde...
Article
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Quantitative and qualitative analysis of chromosomal polymorphism in 19 natural populations of Ch. agilis had been performed. Most studied populations showed a medium level of chromosomal polymorphism: on average 45±3.0% of specimens are heterozygotes with 0.52±0.01 heterozygotic inversion per larvae. Besides inversions, B-chromosomes were found in...
Article
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A chromosomal polymorphism was detected on karyological screening of Kangayam breeding sires prior to subjecting them for frozen semen collection. One bull possessed the chromosomal complement 2n = 60, consisting of 58 acrocentric autosomes, one large sub-metacentric X-chromosome, and one small acrocentric Y-chromosome with a small visible p-arm, w...
Article
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The chromosome numbers (2n) are presented for 7 species of Spiraea (Rosaceae), one of them for the first time (S. dahurica). All 20 samples studied are from different localities of Russia: Volga region (Volgogradskaya Oblast'), Caucasus (Republic of Dagestan), Siberia (Irkutskaya Oblast', Krasnoyarskii Krai, Novosibirskaya Oblast', Republic of Sakh...
Article
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One of the largest monocotyledonous genus in the Amaryllidaceae family is the Allium genus that includes approximately 900 species. This study aimed to examine the variations and clustering of eight Iranian endemic Allium species based on karyotype features. The species were collected from wild habitats across different geographical areas of Iran....
Article
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Cytological studies of two genera, four species of Commelinaceae from Thailand were conducted. The chromosome numbers and karyotype formulas of the four species analyzed here were Callisia repens, 2n=12, 4sm+8st; Ca. soconuscensis 2n=12, 2sm+10st; Cyanotis axilaris 2n=20, 20st; and Cyanotis cristata 2n=26, 6m+2sm+18st. The karyotypes of the four sp...
Article
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Pelophylax esculentus is an interspecies hybrid of marsh frog P. ridibundus and pool frog P. lessonae. The hybrids are usually presented by diploid and triploid forms, and coexist and crossbreed with one or both parental species in the hemiclonal population systems (HPS). Siverskyi Donets river basin is known for its diversity of HPS and was descri...
Article
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In the present work, the chromosome variation and comparative analysis of conventional and G-banding karyotypes between three duck breeds (Pekin, Soudani and Baladi) occurring in Egypt were carried out. Almost all examined cells of the three studied duck breeds showed 7 macro-chromosome pairs and Z, W and 64 microchromosomes (less than 1 micron in...
Article
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The discovery of telomeric repeats in interstitial regions of plant chromosomes (ITRs) through molecular cytogenetic techniques was achieved several decades ago. However, the information is scattered and has not been critically evaluated from an evolutionary perspective. Based on the analysis of currently available data, it is shown that ITRs are w...
Article
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There is dearth of karyological data for small African Enteromius species (formerly small African Barbus species) although, such data has been very important in understanding the internal groupings within the genus. This study assessed the chromosomes of Enteromius perince, a small Enteromius species, from Jos plateau, Nigeria, and presents its kar...
Article
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Tenualosa ilisha (Hamilton, 1822), commonly known as Hilsha shad is a valuable and highly acceptable species in terms of their high flavored properties. Hilsha shad has striking morpho-genetical adaptation to heterogeneous habitats across their migratory routes. Cytogenetic analysis demonstrates the changes in chromosomes. But none was focused on t...
Article
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Bats are the second largest mammalian order with an almost worldwide distribution. Bat taxonomy remained almost unchanged for decades, and the diversity of the order was underestimated. The advent of molecular methods brought change to chiropteran taxonomy. The number of families increased from 17–18 to 21, and the relationships between them were r...
Article
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Once introduced into new area, invasive species can be expected to have low genetic diversity due to the founder effect. Here we tested this prediction using cytogenetic and molecular analysis of Armenian and Belarusian populations of Colorado potato beetle Leptinotarsa decemlineata (Say, 1824) and by comparing the results with those of native (Nor...
Article
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The paper presents the original data of the chromosomal and molecular-genetic (by PCR typing) analysis of cryptic species of the genus Microtus on the territory of Belarus. The aim of the study is to perform chromosomal labeling of common vole populations in various localities in Belarus to identify Microtus arvalis s. l. twin species in natural ec...
Conference Paper
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Hyper-accumulators are unusual plants that accumulate particular metals or metalloids in their living tissues to levels that may be hundreds or thousands of times greater than is normal for most plants. Hyper-acumulative plants are of practical importance as they are used in soil rehabilitation technologies. Hyper-accumulators are exceptional model...
Article
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Complicated relationships between different forms of Pelophylax esculentus complex are strongly connected to their reproduction modes. Stability of the hemiclonal population systems including variety of hybrids is provided by balance between gamete production patterns and selective death of offspring portion. A direct way to study such mechanisms i...
Article
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We review the extent and nature of scientific knowledge of the Big-headed Amazon River Turtle, Peltocephalus dumerilianus, covering distribution, morphology, taxonomy, diet, behaviour, reproduction, and ecology. We discuss the phylogenetic position of the species and its evolutionary relationships with the other podocnemidids, comparing morphologic...
Article
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Use of planting material of forest trees with improved hereditary characteristics is one of the ways to increase the productivity and biological stability of forest stands. It requires taking measures to develop and improve selection base using modern approaches and methods of genetics and biotechnology. A molecular genetics assessment of clone pla...
Presentation
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Invited lecture. The lecture will mainly address two main problems which today threaten the social and scientific recognition of systematics as a basic science crucial for all applications involving the use of organisms, including their conservation. These problems concern a) nomenclature and b) taxonomy. Nomenclature: as a consequence of increasin...
Article
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Odontarrhena bertolonii is an endemic serpentine species of Tuscany and Liguria and a model system for nickel-hyperaccumulation research in plants. Phenotypic, genetic and karyological variability between populations was previously detected, but existence and distribution of cytotypes was unknown. Accordingly, we examined ploidy level in eight popu...
Poster
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As a result of the karyological study of the species A. hybridus and A. retroflexus in Bulgaria diploid chromosome number 2n = 34 was established (Table 1). Two types of chromosomes were reported: meta-and submetacentric. Predominant in both species are the metacentric chromosomes (Table 3, Figure 1). The chromosome size varies from 0,74 µm for the...
Article
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The peculiarities of pollen morphology and karyotype of endemic species Cousinia fedorovii Takht. (Asteraceae) included in the Red Data Book of plants of Armenia have been investigated. Pollen grains 3-zonocolp-orate, exine ornamentation negative-reticulate (LM) or irregular tuberculate (SEM). In the karyologically studied samples of the species C....
Article
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The article presents an analysis of chromosome numbers in Siberian species of the genus Viola (40 speciesfrom 12 sections) based on numerous literary sources and original data. In addition, hybrid forms from the collection site“Rare and endangered Plant Species” of the Central Siberian Botanical Garden (Novosibirsk) were analyzed. Just as theroots...
Article
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Information about ploidy is important in both commercial and conservation aquaculture and fish research. Unfortunately, methods for its determination, such as karyology, determination of the amount of DNA in a cell using microdensitometry or flow cytometry and/or measuring erythrocytes in a blood smear can be stressful or even destructive. Some of...
Article
Full-text available
Information about ploidy is important in both commercial and conservation aquaculture and fish research. Unfortunately, methods for its determination, such as karyology, determination of the amount of DNA in a cell using microdensitometry or flow cytometry and/or measuring erythrocytes in a blood smear can be stressful or even destructive. Some of...
Article
Full-text available
Two new species of the genus Dugesia (Platyhelminthes, Tricladida, Dugesiidae) from the tropical monsoon forest in southern China are described on the basis of an integrative taxonomic study involving morphology, karyology, histology, and molecular analyses. The new species Dugesia circumcisa Chen & Dong, sp. nov. is characterised by asymmetrical o...
Article
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We describe the first reported intergeneric, which naturally occurs between two subspecies belonging to different genera, Dactylorhiza fuchsii subsp. sooana (genus Dactylorhiza ) and Pseudorchis albida subsp. tricuspis (genus Pseudorchis ), as × Pseudorhiza nieschalkii (Senghas) P.F.Hunt nothosubsp. siculorum H.Kertész & N.Anghelescu, 2020. The hyb...
Article
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Ecologo-Physiological and Caryological Iinvestgations of Some Rare Halophyte Plant Species from Ararat Plain A study of several physiological features of eight plant species has been conducted in order to assess the vulnerability and adaptability to the conditions of salt marshes of the arid region of Armenia. Water regime, intensity of transpirati...