Karyotype analysis and interspecific hybridisation in three perennial Sesbania species (Leguminosae)

Euphytica ◽  
1993 ◽  
Vol 71 (1-2) ◽  
pp. 21-28 ◽  
Author(s):  
J. H. Heering ◽  
J. Hanson
Keyword(s):  
Karyotype Analysis ◽  
Interspecific Hybridisation

Detection Y Chromosome Microdeletions Among Iraq Population in Infertile Patients with Azoospermia and Severe Oligospermia

2019 ◽  
Vol 9 (02) ◽  
Author(s):  
Samah A Hammood ◽  
Alaauldeen S M AL-Sallami ◽  
Saleh M Al-Khafaji
Keyword(s):  
Y Chromosome ◽  
Karyotype Analysis ◽  
Semen Analysis ◽  
Obstructive Azoospermia ◽  
Severe Oligozoospermia ◽  
Infertile Men ◽  
Y Chromosome Microdeletions ◽  
Detailed Evaluation ◽  
Health Organization ◽  
Infertile Patients

Objective: To detection of microdeletions of Y chromosome and study the frequency of microdeletions in infertile men with non-obstructive azoospermia or severe oligozoospermia(Middle Euphrates center)in Iraq population. Material and methods: 153 males were included in the study, the casesweredivided into groups according to the infertility etiology and semen analysis according to Word health organization, the frequencies and the characteristicsof Y chromosome microdeletions were investigated in groups. Multiplex PCR was applied to detect the microdeletions. Results:Y chromosome microdeletion was detected in 42 (40.7%) of 153 cases ,Microdeletions in azoospermia showed more frequently detected 28 (52.8%), followed by severe oligospermia 14 (28 %),Microdeletions in the AZFc region were the most common 12 (22.64%), followed by AZFb 11(20.75%) and AZFa 5(9.43%) in azoospermia compared to severe oligospermisAZFc 6 (12%) AZFb 4 (8 %) and AZFa 4 (8%). Conclusion: Y chromosome microdeletions were detected quite frequently in certain infertility subgroups. Therefore, detailed evaluation of an infertile man by physical examination, semen analysis, hormonal evaluationsand when required, karyotype analysis may predict the patients for whom Y chromosome microdeletionanalysis is necessary and also prevent cost increases. Recommendation: This study emphasizes that analysis of microdeletions should be carried out for all patients with idiopathic azoospermia and severe oligospermia who are candidates for intracytoplasmic sperm injection

scholarly journals Diversification of the Balloon bushcrickets (Orthoptera, Hexacentrinae, Aerotegmina) in the East African mountains

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Beata Grzywacz ◽  
Elżbieta Warchałowska-Śliwa ◽  
Maciej Kociński ◽  
Klaus-Gerhard Heller ◽  
Claudia Hemp
Keyword(s):  
Molecular Phylogeny ◽  
Large Scale ◽  
Diploid Number ◽  
Karyotype Analysis ◽  
Spatial Separation ◽  
Eastern Arc Mountains ◽  
East African ◽  
Habitat Islands ◽  
Extinction Event ◽  
Underlying Processes

AbstractEast African mountains constitute a network of isolated habitat islands among dry savannah and are thus ideal for studying species diversification processes. This study elucidated the phylogenetic and phylogeographic relationships of all bushcricket species comprising the genus Aerotegmina. Our analysis indicated that large-scale climatic and topographic processes in Africa are likely to have driven speciation in this group, and revealed the cytogenetic traits of the species. Molecular phylogeny supported the monophyly of Aerotegmina and showed that the genus probably originated in the old Eastern Arc Mountains of Tanzania and Kenya. Two lineages were distinguished: small- and large-sized species with geographically distinct habitats. The underlying processes are thought to be eight dispersals, ten vicariance events, and one extinction event linked to repeated fragmentation of the African rainforest. Those processes, in conjunction with habitat change, probably also led to the spatial separation of the species into a northern clade with a diploid number of chromosomes 2n = 32 + X0 or 2n = 30 + neo-XY and a southern clade with a reduced number of chromosomes (2n = 28 + X0 or 24 + neo-X1X2Y). Karyotype analysis suggests that Aerotegmina is currently in the process of speciation.

scholarly journals A case report and mechanism analysis of a normal phenotype mosaic 47, XXY complicated by paternal iUPD (9) who had a normal PGD result

2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Dan Li ◽  
Yun Wang ◽  
Nan Zhao ◽  
Liang Chang ◽  
Ping Liu ◽  
...  
Keyword(s):  
Case Report ◽  
Karyotype Analysis ◽  
Snp Array ◽  
Uniparental Disomy ◽  
Comparative Genomic ◽  
Klinefelter’S Syndrome ◽  
Mechanism Analysis ◽  
Klinefelter's Syndrome ◽  
Preimplantation Genetic Testing ◽  
First Case

Abstract Background Uniparental disomy (UPD) refers to the situation in which two copies of homologous chromosomes or part of a chromosome originate from the one parent and no copy is supplied by the other parent. Case presentation Here, we reported a woman whose karyotype was 46, XX, t (1;17)(q42;q21), has obtained 5 embryos by intracytoplasmic sperm injection (ICSI) after one cycle of in vitro fertility (IVF). After microarray-based comparative genomic hybridization (array-CGH) for preimplantation genetic testing for chromosomal structural rearrangements (PGT-SR), two embryos were balanced, one balanced embryo was implanted and the patient successfully achieved pregnancy. Amniocentesis was performed at the 19th week of gestation for karyotype analysis and single nucleotide polymorphism (SNP)-array test. The result of karyotype analysis was: mos 47, XXY [19]/46, XY [81]; SNP-array results revealed 46, XY, iUPD (9) pat. After full genetic counseling for mosaic Klinefelter’s syndrome and paternal iUPD (9), the couple decided to continue pregnancy, and the patient gave birth to a healthy boy. The newborn is now 3.5 years old, and developed normally. This case will provide counseling evidences of paternal iUPD (9) for doctors. Conclusions This is the first case report of paternal iUPD9 with mosaic Klinefelter’s syndrome, and no abnormality has been observed during the 3.5-year follow-up. Further observation is required to determine whether the imprinted genes on the chromosomes are pathogenic and whether recessive pathogenetic genes are activated.

scholarly journals Erratum to: Molecular analysis of miscarriage products using multiplex ligation-dependent probe amplification (MLPA): alternative to conventional karyotype analysis

2014 ◽  
Vol 291 (2) ◽  
pp. 355-355
Author(s):  
Ji Won Kim ◽  
Sang Woo Lyu ◽  
Se Ra Sung ◽  
Ji Eun Park ◽  
Dong Hyun Cha ◽  
...  
Keyword(s):  
Molecular Analysis ◽  
Karyotype Analysis ◽  
Dependent Probe

Karyotype analysis of seven cultivated varieties ofCapsicum annuumL.

Caryologia ◽  
2013 ◽  
Vol 66 (1) ◽  
pp. 70-75 ◽  
Author(s):  
S.K. Cheema ◽  
M.R. Pant
Keyword(s):  
Karyotype Analysis

scholarly journals Karyotype Analysis of Eyprepocnemis alacris alacris Serville (Insecta: Orthoptera: Acrididae)

CYTOLOGIA ◽  
2012 ◽  
Vol 77 (3) ◽  
pp. 343-346
Author(s):  
Yogesh Jangonda Koli ◽  
Dilip Laxman Bharmal ◽  
Aruna A. Kanase ◽  
Ganesh Parsharam Bhawane
Keyword(s):  
Karyotype Analysis

DETERMINATION OF BREAKPOINT POSITIONS IN BARLEY TRANSLOCATIONS BY KARYOTYPE ANALYSIS OF PERMANENT RINGS OF SIX CHROMOSOMES

1974 ◽  
Vol 16 (3) ◽  
pp. 539-548 ◽  
Author(s):  
N. A. Tuleen ◽  
J. H. Gardenhire
Keyword(s):  
Karyotype Analysis ◽  
Chromosome 1 ◽  
Crossing Over ◽  
Differential Segment

Five T1-5 and 10 T1-6 barley translocations were crossed with the translocation T1-7f. Plants in which the T1-5 and T1-6 translocations had been combined with T1-7f due to crossing over in the differential segment were selected in the F2 generation. One of the chromosomes present in plants carrying the translocations in the combined form is made up of parts of the three chromosomes involved in the two translocations, and the segmental arrangement of this tripartite chromosome is determined by the position of the breakpoints in chromosome 1. The karyotypes of these stocks were analyzed and the breakpoints in seven of the translocations were assigned to the same arm and eight to the opposite arm of chromosome 1 relative to the position of the breakpoint in T1-7f.

Observations on the ecology of hybridisation in the clubmosses (Lycopodiaceae)

1985 ◽  
Vol 86 ◽  
pp. 245-251 ◽  
Author(s):  
Benjamin Øllgaard
Keyword(s):  
Male Gamete ◽  
Interspecific Hybridisation ◽  
Parent Species ◽  
Spore Dispersal ◽  
Population Densities ◽  
Ecological Conditions ◽  
Highly Effective ◽  
Subterranean Habitat

SynopsisEcological conditions for intergametophytic mating and interspecific hybridisation in the clubmosses are discussed. Several features, including the number of recorded hybrids, records of gametophyte population densities, and conditions for movement of the male gamete in the soil, indicate that intergametophytic mating in Lycopodium is not especially impeded by the subterranean habitat, as has been commonly assumed. The evidence from one site indicates highly effective spore dispersal, and a greater ecological tolerance than expected for the species involved. Two cases are discussed in which hybrids have been formed between ecologically and/or taxonomically very different parent species, in the absence of one parent sporophyte, or with one of the parent species sporophyte poorly adapted to the hybrid habitat. The protected, relatively uniform, subterranean gametophyte habitat is thought to account for successful gametophyte growth and hybridisation between species of widely different sporophyte ecology.

scholarly journals Karyotype analysis of eight cultivated Allium species

2018 ◽  
Vol 60 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Farzaneh Pordel Maragheh ◽  
Daniel Janus ◽  
Magdalena Senderowicz ◽  
Kamil Haliloglu ◽  
Bozena Kolano
Keyword(s):  
Karyotype Analysis ◽  
Allium Species

Karyotype analysis and report on B-chromosome in Gloriosa superba L. by differential staining

The Nucleus ◽  
2018 ◽  
Vol 62 (1) ◽  
pp. 31-38
Author(s):  
Syeda Sharmeen Sultana ◽  
Chandan Kumar Dash ◽  
Sheikh Shamimul Alam ◽  
Md. Abul Hassan
Keyword(s):  
Karyotype Analysis ◽  
B Chromosome ◽  
Differential Staining ◽  
Gloriosa Superba
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