The epigenetic regulation of centromeres and telomeres in plants and animals.

abstract：:Drosophila melanogaster Meigen, 1830 has served as a model insect for over a century. Sequencing of the 11 additional Drosophila Fallen, 1823 species marks substantial progress in comparative genomics of this genus. By comparison, practically nothing is known about the genome size or genome sequences of parasitic wasp...

journal_title：Comparative cytogenetics

authors： Gokhman VE,Johnston JS,Small C,Rajwani R,Hanrahan SJ,Govind S

更新日期：2011-08-24 00:00:00

abstract：:Ninety individuals of the characid fish Astyanax fasciatus (Cuvier, 1819) were collected at Água da Madalena stream (Botucatu, São Paulo, Brazil) and analyzed for diploid chromosome number 2n and karyotype composition as well as for the chromosomal location of the 5S and 18S ribosomal DNA (rDNA). Whereas no chromosome...

journal_title：Comparative cytogenetics

authors： Ferreira-Neto M,Artoni RF,Vicari MR,Moreira-Filho O,Camacho JP,Bakkali M,de Oliveira C,Foresti F

更新日期：2012-01-24 00:00:00

abstract：:Plantago lagopus is a diploid (2n = 2x =12) weed belonging to family Plantaginaceae. We reported a novel B chromosome in this species composed of 5S and 45S ribosomal DNA and other repetitive elements. In the present work, presence of B chromosome(s) was confirmed through FISH on root tip and pollen mother cells. Seve...

journal_title：Comparative cytogenetics

authors： Dhar MK,Kour G,Kaul S

更新日期：2017-05-22 00:00:00

abstract：:The B chromosome in the hylid Hypsiboas albopunctatus (2n = 22 + B) is small, almost entirely composed of C-positive heterochromatin, and does not pair with any chromosome of the A complement. B probe, obtained by microdissection and DOP-PCR amplification, was used to search for homology between the B and regular chro...

journal_title：Comparative cytogenetics

authors： Gruber SL,Diniz D,Sobrinho-Scudeler PE,Fausto Foresti,Haddad CF,Kasahara S

更新日期：2014-08-08 00:00:00

abstract：:The ancient insect order Odonata is divided into three suborders: Anisoptera and Zygoptera with approximately 3000 species worldwide each, and Anisozygoptera with only four extant species in the relict family Epiophlebiidae. An updated list of Odonata species studied regarding chromosome number, sex chromosome mechani...

journal_title：Comparative cytogenetics

authors： Kuznetsova VG,Golub NV

更新日期：2020-10-22 00:00:00

abstract：:Peanut, Arachis hypogaea (Linnaeus, 1753) is an allotetraploid cultivated plant with two subgenomes derived from the hybridization between two diploid wild species, A. duranensis (Krapovickas & W. C. Gregory, 1994) and A. ipaensis (Krapovickas & W. C. Gregory, 1994), followed by spontaneous chromosomal duplication. To...

journal_title：Comparative cytogenetics

authors： do Nascimento EFMB,Dos Santos BV,Marques LOC,Guimarães PM,Brasileiro ACM,Leal-Bertioli SCM,Bertioli DJ,Araujo ACG

更新日期：2018-03-14 00:00:00

abstract：:An extreme example of nonrandom rearrangements, especially inversion breaks, is described in the polytene chromosomes of the black fly Simulium bergi Rubtsov, 1956 from Armenia and Turkey. A total of 48 rearrangements was discovered, relative to the standard banding sequence for the subgenus Simulium Latreille, 1802. ...

journal_title：Comparative cytogenetics

authors： Adler PH,Yildirim A,Onder Z,Tasci GT,Duzlu O,Arslan MO,Ciloglu A,Sari B,Parmaksizoglu N,Inci A

更新日期：2016-06-30 00:00:00

abstract：:This article provides an overview of research on chromatin diminution (CD) in copepods. The phenomenology, mechanisms and biological role of CD are discussed. A model of CD as an alternative means of regulating cell differentiation is presented. While the vast majority of eukaryotes inactivate genes that are no longer...

journal_title：Comparative cytogenetics

authors： Grishanin A

更新日期：2014-01-09 00:00:00

abstract：:The karyotypes and the localization of C-bands, clusters of ribosomal DNA and telomeric repeats of 10 species of the family Pamphagidae from Morocco are described for the first time. The species studied belong to the subfamilies Pamphaginae and Thrinchinae. All species have karyotypes consisting of 19 and 20 acrocentr...

journal_title：Comparative cytogenetics

authors： Buleu OG,Jetybayev IY,Chobanov DP,Bugrov AG

更新日期：2019-02-27 00:00:00

abstract：:[This corrects the article DOI: 10.3897/CompCytogen.v14i2.49513.]. ...

journal_title：Comparative cytogenetics

authors： Goes CAG,Daniel SN,Piva LH,Yasui GS,Artoni RF,Hashimoto DT,Foresti F,Porto-Foresti F

更新日期：2020-12-29 00:00:00

abstract：:[This corrects the article DOI: 10.3897/CompCytogen.v11i1.10339.]. ...

journal_title：Comparative cytogenetics

authors： Celeste SM,Ortiz AM,Robledo GA,Valls JFM,Lavia GI

更新日期：2017-12-08 00:00:00

abstract：:Cytogenetic features of the hangingfly Bittacus sinicus Issiki, 1931 were investigated for the first time using C-banding and DAPI (4',6-diamidino-2-phenylindole) staining. The karyotype analyses show that the male B. sinicus possesses the lowest chromosome number (2n = 15) ever observed in Mecoptera, and an almost sy...

journal_title：Comparative cytogenetics

authors： Miao Y,Hua BZ

更新日期：2020-07-30 00:00:00

abstract：:The subfamily Harpactorinae is composed of six tribes. Phylogenetic studies bring together some of Harpactorinae tribes, but by and large the data on evolutionary relationships of the subfamily are scarce. Chromosome studies are of great importance for understanding the systematics of different groups of insects. For ...

journal_title：Comparative cytogenetics

authors： Tiepo AN,Pezenti LF,Ferraz Lopes TB,da Silva CR,Dionisio JF,Fernandes JA,Da Rosa R

更新日期：2016-12-09 00:00:00

abstract：:We describe the karyotype, location of nucleolus-organizing regions (NORs) and heterochromatin composition and distribution in Lepidochitona caprearum (Scacchi, 1836). The examined specimens had 2n=24 chromosomes; the elements of pairs 1-4 were metacentric, subtelocentric those of the fifth pair, telocentric the eleme...

journal_title：Comparative cytogenetics

authors： Petraccioli A,Maio N,Odierna G

更新日期：2012-12-12 00:00:00

abstract：:The species-rich and widespread genus Taraxacum F. H. Wiggers, 1780 (Asteraceae subfamily Cichorioideae) is one of the most taxonomically complex plant genera in the world, mainly due to its combination of different sexual and asexual reproduction strategies. Polyploidy is usually confined to apomictic microspecies, v...

journal_title：Comparative cytogenetics

authors： Macháčková P,Majeský Ľ,Hroneš M,Hřibová E,Bohumil Trávníček,Vašut RJ

更新日期：2018-09-18 00:00:00

abstract：:In the present study, we analyzed individuals of Hypostomus soniae (Loricariidae) collected from the Teles Pires River, southern Amazon basin, Brazil. Hypostomus soniae has a diploid chromosome number of 2n = 64 and a karyotype composed of 12 metacentric (m), 22 submetacentric (sm), 14 subtelocentric (st), and 16 acro...

journal_title：Comparative cytogenetics

authors： de Oliveira LC,Ribeiro MO,Costa GM,Zawadzki CH,Prizon-Nakajima AC,Borin-Carvalho LA,Martins-Santos IC,Portela-Castro ALB

更新日期：2019-12-11 00:00:00

abstract：:The genus Pseudophoxinus Bleeker, 1860 is found in a wide range of habitats in central Anatolia, but it is not well known from a cytogenetic aspect. In this study the first karyotypic description of the spring minnows Pseudophoxinuscrassus (Ladiges, 1960) and Pseudophoxinushittitorum Freyhof & Özulug, 2010 by means of...

journal_title：Comparative cytogenetics

authors： Unal S,Gaffaroğlu M,Ayata MK,Yüksel E

更新日期：2014-10-31 00:00:00

abstract：:We report the karyotype, some aspects of spermatogenesis, and ovarian trophocytes ploidy in three aquatic bug species: Ilyocoris cimicoides (Linnaeus, 1758), Notonecta glauca Linnaeus, 1758, and Diplonychus rusticus Fabricius, 1871 from previously unexplored regions - South Europe (Bulgaria) and Southeast Asia (Vietna...

journal_title：Comparative cytogenetics

authors： Stoianova D,Simov N,Vu MQ,Nguyen DM,Grozeva S

更新日期：2020-03-05 00:00:00

abstract：:Chromosome morphometry and nuclear DNA content are useful data for cytotaxonomy and for understanding the evolutionary history of different taxa. However, the chromosome number is the only karyotype aspect reported for the species of Dorstenia so far. In this study, the nuclear genome size of Dorstenia arifolia (Lamar...

journal_title：Comparative cytogenetics

authors： Amaral-Silva PM,Clarindo WR,Carrijo TT,Carvalho CR,Praça-Fontes MM

更新日期：2016-01-22 00:00:00

abstract：:Phaneropterinae is the largest subfamily of Tettigoniidae, distributed across the globe. There are few cytogenetic studies regarding this group, as in the case of the genus group Aniarae, which represents only two karyotyped species. The current study aims to analyze cytogenetically three species of Hyperophora Brunne...

journal_title：Comparative cytogenetics

authors： Cansanção Silva B,Henrique Bonfim Souza L,Chamorro-Rengifo J,Araujo D

更新日期：2019-04-02 00:00:00

abstract：:Synaptonemal complex (SC) chains were revealed in semisterile intraspecific F1 hybrids of Ellobius tancrei Blasius, 1884 (2n = 49, NF=56 and 2n=50, NF=56), heterozygous for Robertsonian (Rb) translocations. Chains were formed by Rb submetacentrics with monobrachial homology. Chromosome synapsis in spermatocytes of the...

journal_title：Comparative cytogenetics

authors： Matveevsky S,Bakloushinskaya I,Tambovtseva V,Romanenko S,Kolomiets O

更新日期：2015-12-02 00:00:00

abstract：:Brazilian fish cytogenetics started as early as the seventies in three pioneering research groups, located at the Universidade Estadual Paulista (UNESP, Botucatu, SP), Universidade Federal de São Carlos (UFSCar, São Carlos, SP) and Universidade de São Paulo (USP, São Paulo, SP). Investigations that have been conducted...

journal_title：Comparative cytogenetics

authors： Bertollo LAC,Cioffi MB,Galetti PM Jr,Filho OM

更新日期：2017-10-20 00:00:00

abstract：:Chromosome counts and karyotype characterization have proved to be important features of a genome. Chromosome changes during the diversification of ants might play an important role, given the diversity and success of Formicidae. Comparative karyotype analyses on ants have enriched and helped ant systematics. Among le...

journal_title：Comparative cytogenetics

authors： Pereira TTP,Dos Reis ACCC,Cardoso DC,Cristiano MP

更新日期：2018-01-09 00:00:00

abstract：:Valeriana jatamansi, a medicinally important species of the family Valerianaceae, has been cytologically studied in different geographical areas of North-Western Himalayan region of India. The tetraploid cytotype with chromosome numbers 2n=32 is in conformity with the earlier reports of the species from different part...

journal_title：Comparative cytogenetics

authors： Rani S,Sharma TR,Kapila R,Chahota RK

更新日期：2015-08-07 00:00:00

abstract：:Stingless bees are distributed widely in the tropics, where they are major pollinators of several plant species. In this study, the karyotype of Meliponaquinquefasciata Lepeletier, 1836 was analysed, with emphasis on the presence of B chromosomes. Post-defecating larvae were analysed using Giemsa staining, the C-bandi...

journal_title：Comparative cytogenetics

authors： Silva AA,Rocha MP,Ompolo SDG,Campos LAO,Tavares MG

更新日期：2018-11-09 00:00:00

abstract：:Chromosome morphometry and nuclear DNA content are useful data for cytotaxonomy and to understand the evolutionary history of different taxa. For the genus Bromus Linnaeus, 1753, distinct ploidy levels have been reported, occurring from diploid to duodecaploid species. The geographic distribution of Bromus species has...

journal_title：Comparative cytogenetics

authors： Artico LL,Mazzocato AC,Ferreira JL,Carvalho CR,Clarindo WR

更新日期：2017-04-07 00:00:00

abstract：:Previous cytogenetic analyses in Trypoxylon Latreille, 1796 have been basically restricted to C-banding. In the present study, base-specific CMA3 and DAPI fluorochrome staining were used to characterize the constitutive heterochromatin in three Trypoxylon species. The heterochromatin was GC-rich in all the species stu...

journal_title：Comparative cytogenetics

authors： Menezes RS,Carvalho AF,Silva JG,Costa MA

更新日期：2011-07-01 00:00:00

abstract：:The African chironomid Polypedilumvanderplanki Hinton, 1951 is the only chironomid able to withstand almost complete desiccation in an ametabolic state known as anhydrobiosis. The karyotypes of two allopatric populations of this anhydrobiotic chironomid, one from Nigeria and another from Malawi, were described accordi...

journal_title：Comparative cytogenetics

authors： Petrova NA,Cornette R,Shimura S,Gusev OA,Pemba D,Kikawada T,Zhirov SV,Okuda T

更新日期：2015-05-11 00:00:00

abstract：:A lectotype is designated for the Tibetan species Deronectesemmerichi Falkenström, 1936 (Currently Boreonectesemmerichi (Falkenström)), and its habitus, as well as the median lobe and parameres of its aedeagus, are figured along with additional comparative material. Material of Boreonectesemmerichi from Sikkim (BMNH) ...

journal_title：Comparative cytogenetics

authors： Angus RB,Angus EM,Jia F,Chen ZN,Zhang Y

更新日期：2015-03-31 00:00:00

abstract：:Variation in the number of chromosomes was revealed in 61 samples of Cimex lectularius Linnaeus, 1758 from the Czech Republic and other European countries, hosted on Myotis Kaup, 1829 (4) and Homo sapiens Linnaeus, 1758 (57). The karyotype of all the specimens of Cimex lectularius analysed contained 26 autosomes and a...

journal_title：Comparative cytogenetics

authors： Sadílek D,Sťáhlavský F,Vilímová J,Zima J

更新日期：2013-10-03 00:00:00