U.S. flag

An official website of the United States government

PubAg

Main content area

You searched for: Subject "linkage groups" Remove constraint Subject: "linkage groups"
Start Over

Search

3,064  Search Results

« Previous | 1 - 20 of 3,064 |
Number of results to display per page

Search Results

1. Evidence of two XX/XY sex-determining loci in the Stirling stock of Nile tilapia (Oreochromis niloticus)

Author:
Taslima, Khanam; Khan, Mohd G.Q.; McAndrew, Brendan J.; Penman, David J.
Source:
Aquaculture 2021 v.532 pp. 735995
ISSN:
0044-8486
Subject:
linkage groups,   etc   ; Oreochromis niloticus; aquaculture; breeding stock; exons; fish; founder effect; lakes; loci; males; marker-assisted selection; phenotype; screening; sex determination; sex ratio; temperature; Egypt; Israel;     Show all 18 Subjects
Abstract:
... Nile tilapia (Oreochromis niloticus) has been the subject of much research on sex determination due to the problems caused by maturation and reproduction in culture before harvest, and because of the emerging complexity of sex determination in this species. Analysis of the stock held at the University of Stirling, derived directly from Lake Manzala in Egypt about 41 years ago, detected an XX/XY lo ...
DOI:
10.1016/j.aquaculture.2020.735995

2. Construction of a high-density genetic linkage map and fine mapping of QTLs for growth and sex-related traits in red-tail catfish (Hemibagrus wyckioides)

Author:
Zhou, Yu-Lin; Wang, Zhong-Wei; Guo, Xin-Fen; Wu, Jun-Jie; Lu, Wei-Jia; Zhou, Li; Gui, Jian-Fang
Source:
Aquaculture 2021 v.531 pp. 735892
ISSN:
0044-8486
Subject:
linkage groups,   etc   ; Hemibagrus; aquaculture; body weight; catfish; chromosome mapping; genes; marker-assisted selection; morphometry; parents; phenotypic variation; progeny; quantitative trait loci; single nucleotide polymorphism;     Show all 14 Subjects
Abstract:
... High-density genetic linkage map based on single nucleotide polymorphisms (SNPs) are essential for fine mapping of QTLs and identification of trait-related genes in aquaculture fish species. In this study, the first high-density genetic linkage map of red-tail catfish (Hemibagrus wyckioides) based on 2b-RAD sequencing technology was constructed using one F1 family composed of 165 offspring and the ...
DOI:
10.1016/j.aquaculture.2020.735892

3. QTL mapping for orange shell color and sex in the Pacific oyster (Crassostrea gigas)

Author:
Han, Ziqiang; Li, Qi; Xu, Chengxun; Liu, Shikai; Yu, Hong; Kong, Lingfeng
Source:
Aquaculture 2021 v.530 pp. 735781
ISSN:
0044-8486
Subject:
linkage groups,   etc   ; Crassostrea gigas; G-proteins; breeding programs; chromosome mapping; collagen; color; crossing; estrogen receptors; females; fibroblast growth factor receptor 4; genes; genotyping by sequencing; germplasm; males; phenotypic variation; proteasome endopeptidase complex; quantitative trait loci; sex determination; shell (molluscs); shellfish; single nucleotide polymorphism;     Show all 22 Subjects
Abstract:
... Molluscan shellfish have a diverse form of shell coloration and sex determination, understanding the genetic mechanism under these two traits is crucial to their germplasm exploitation and conservation. In our breeding program, a novel orange-shell variant of C. gigas was obtained, and an F2 family was constructed by crossing an orange-shell male with a black-shell female. This F2 family provided ...
DOI:
10.1016/j.aquaculture.2020.735781

4. Development of a core SNP panel for cacao (Theobroma cacao L.) identity analysis

Author:
Mahabir, Amrita; Motilal, Lambert A.; Gopaulchan, David; Ramkissoon, Saila; Sankar, Antoinette; Umaharan, Pathmanathan
Source:
Genome 2020 v.63 no.2 pp. 103-114
ISSN:
1480-3321
Subject:
linkage groups,   etc   ; DNA fingerprinting; Theobroma cacao; data collection; gene frequency; heterozygosity; linkage disequilibrium; single nucleotide polymorphism;     Show all 8 Subjects
Abstract:
... Single nucleotide polymorphisms (SNPs) are preferred markers for DNA fingerprinting and diversity studies in cacao (Theobroma cacao L.). Yet, a consensus SNP panel with a minimum number of SNPs for optimal identity analysis is unavailable for cacao. An initial set of 146 SNP panels of varying sizes were assembled based on heterozygosity, linkage disequilibrium (LD), linkage group (LG) distribution ...
DOI:
10.1139/gen-2019-0071

5. Molecular karyotypes of loquat (Eriobotrya japonica) aneuploids can be detected by using SSR markers combined with quantitative PCR irrespective of heterozygosity

Author:
Wen, Guo; Dang, Jiangbo; Xie, Zhongyi; Wang, Jinying; Jiang, Pengfei; Guo, Qigao; Liang, Guolu
Source:
Plant methods 2020 v.16 no.1 pp. 22
ISSN:
1746-4811
Subject:
linkage groups,   etc   ; Eriobotrya japonica; aneuploidy; chromosomes; heterozygosity; karyotyping; loquats; microsatellite repeats; open pollination; phenotype; progeny; quantitative polymerase chain reaction; triploidy;     Show all 13 Subjects
Abstract:
... BACKGROUND: Aneuploidy, a condition caused by an imbalance between the relative dosages of chromosomes, generally produces a novel phenotype specific to the molecular karyotype. Few techniques are currently available for detecting the molecular karyotypes of aneuploids in plants. RESULTS: Based on this imbalance in chromosome dosage, a new approach (referred to as ‘SSR-qPCR’) combining simple sequ ...
DOI:
10.1186/s13007-020-00568-7
PubMed:
32123538
PubMed Central:
PMC7041098

6. QTL mapping and marker identification for sex determination in the ridgetail white prawn, Exopalaemon carinicauda

Author:
Lv, Jianjian; Lu, Xuan; Ti, Xingbin; Liu, Ping; Li, Jitao; Li, Jian
Source:
Genomics 2020 v.112 no.6 pp. 5240-5247
ISSN:
0888-7543
Subject:
linkage groups,   etc   ; chromosome mapping; females; genes; genotype; phospholipase D; protein kinases; quantitative trait loci; sex determination; shrimp;     Show all 10 Subjects
Abstract:
... Sex determination is an important and intriguing research topic in the field of evolutionary and developmental biology. Quantitative trait locus (QTL) mapping for sex is helpful in clarifying the sex determination system of species. In this study, a second high-resolution genetic linkage map was constructed for the ridgetail white prawn, Exopalaemon carinicauda, which included 9280 markers, coveri ...
DOI:
10.1016/j.ygeno.2020.09.037

7. The reference genome of the selfing fish Kryptolebias hermaphroditus: Identification of phases I and II detoxification genes

Author:
Choi, Beom-Soon; Park, Jun Chul; Kim, Min-Sub; Han, Jeonghoon; Kim, Duck-Hyun; Hagiwara, Atsushi; Sakakura, Yoshitaka; Hwang, Un-Ki; Lee, Bo-Young; Lee, Jae-Seong
Source:
Comparative biochemistry and physiology 2020 v.35 pp. 100684
ISSN:
1744-117X
Subject:
linkage groups,   etc   ; Kryptolebias marmoratus; ecotoxicology; fish; genes; genome assembly; genomic libraries; homozygosity; loci; reproductive system; selfing; transposons; Panama;     Show all 13 Subjects
Abstract:
... The selfing fish Kryptolebias hermaphroditus has unique reproductive system for self-fertilization, making genetically homozygous offsprings. Here, we report on high density genetic map-based genome assembly for the K. hermaphroditus Panama line (PanRS). The numbers of scaffolds were 5212 and the genome was 683,992,224 bp (N50 = 27.45 Mb). The length of anchored scaffold onto 24 linkage groups was ...
DOI:
10.1016/j.cbd.2020.100684

8. Phylogenetic Analysis and Substitution Rate Estimation of Colonial Volvocine Algae Based on Mitochondrial Genomes

Author:
Hu, Yuxin; Xing, Weiyue; Hu, Zhengyu; Liu, Guoxiang
Source:
Genes 2020 v.11 no.1
ISSN:
2073-4425
Subject:
linkage groups,   etc   ; Pandorina; Volvulina; algae; chloroplast genome; chloroplasts; genes; horizontal gene transfer; mitochondria; mitochondrial genome; phylogeny; selection pressure;     Show all 12 Subjects
Abstract:
... We sequenced the mitochondrial genome of six colonial volvocine algae, namely: Pandorina morum, Pandorina colemaniae, Volvulina compacta, Colemanosphaera angeleri, Colemanosphaera charkowiensi, and Yamagishiella unicocca. Previous studies have typically reconstructed the phylogenetic relationship between colonial volvocine algae based on chloroplast or nuclear genes. Here, we explore the validity ...
DOI:
10.3390/genes11010115

9. Bent-core dimers with top-to-bottom linkage between central units

Author:
Horčic, Martin; Svoboda, Jiří; Novotná, Vladimíra; Pociecha, Damian; Gorecka, Ewa
Source:
RSC advances 2018 v.8 no.41 pp. 22974-22985
ISSN:
2046-2069
Subject:
linkage groups,   etc   ; organofluorine compounds; siloxanes;     Show all 3 Subjects
Abstract:
... A structurally new type of core-to-core dimer with a top-to-bottom linkage between the central cores of bent molecules is presented. The structure of the bent-core molecules was modified by changing the length of the spacer between the central cores and terminal chains, by changing the type of linkage groups in the bent-core arms and by variation of the terminal chain polarity – introducing polyfl ...
DOI:
10.1039/c8ra04108c

10. Characterization of sex chromosomes in three deeply diverged species of Pseudocrenilabrinae (Teleostei: Cichlidae)

Author:
Gammerdinger, William J.; Conte, Matthew A.; Sandkam, Benjamin A.; Penman, David J.; Kocher, Thomas D.
Source:
Hydrobiologia 2019 v.832 no.1 pp. 397-408
ISSN:
0018-8158
Subject:
linkage groups,   etc   ; Oreochromis mossambicus; evolution; genome; models; sex chromosomes;     Show all 6 Subjects
Abstract:
... The African cichlid radiations have created thousands of new cichlid species with a wide diversity of trophic morphologies, behaviors, sensory systems, and pigment patterns. In addition, recent research has uncovered a surprising number of young sex chromosome systems within African cichlids. Here, we refine methods to describe the differentiation of young sex chromosomes from whole genome compari ...
DOI:
10.1007/s10750-018-3778-6

11. First high-resolution genetic linkage map of taimen (Hucho taimen) and its application in QTL analysis of growth-related traits

Author:
Tong, Guangxiang; Xue, Shuqun; Geng, Longwu; Zhou, Yi; Yin, Jiasheng; Sun, Zhipeng; Xu, Huan; Zhang, Yongquan; Han, Ying; Kuang, Youyi
Source:
Aquaculture 2020 v.529 pp. 735680
ISSN:
0044-8486
Subject:
linkage groups,   etc   ; Hucho; Salmo taimen; aquaculture; body weight; breeding programs; chromosome mapping; genes; loci; quantitative trait loci; selective breeding; single nucleotide polymorphism;     Show all 12 Subjects
Abstract:
... Taimen (Hucho taimen) is an excellent aquaculture species. Currently, no selective breeding program has been conducted. To promote molecular breeding for taimen, we used genotype-by-sequencing technology to construct a high-resolution linkage map and performed QTL studies of growth-related traits. We sequenced 177 individuals of two full-sib families and obtained 58,016 SNPs. Among them, 30,535 SN ...
DOI:
10.1016/j.aquaculture.2020.735680

12. Dissecting the control of shoot development in grapevine: genetics and genomics identify potential regulators

Author:
Guillaumie, Sabine; Decroocq, Stéphane; Ollat, Nathalie; Delrot, Serge; Gomès, Eric; Cookson, Sarah J.
Source:
BMC plant biology 2020 v.20 no.1 pp. 43
ISSN:
1471-2229
Subject:
linkage groups,   etc   ; Arabidopsis thaliana; Vitis riparia; Vitis vinifera; confidence interval; crops; fruits; gene expression regulation; genomics; leaves; mutants; phenotype; quantitative trait loci; transcriptomics;     Show all 14 Subjects
Abstract:
... BACKGROUND: Grapevine is a crop of major economic importance, yet little is known about the regulation of shoot development in grapevine or other perennial fruits crops. Here we combine genetic and genomic tools to identify candidate genes regulating shoot development in Vitis spp. RESULTS: An F2 population from an interspecific cross between V. vinifera and V. riparia was phenotyped for shoot dev ...
DOI:
10.1186/s12870-020-2258-0
PubMed:
31996141
PubMed Central:
PMC6988314

13. Molecular karyotypes of loquat (Eriobotrya japonica) aneuploids can be detected by using SSR markers combined with quantitative PCR irrespective of heterozygosity

Author:
Wen, Guo; Dang, Jiangbo; Xie, Zhongyi; Wang, Jinying; Jiang, Pengfei; Guo, Qigao; Liang, Guolu
Source:
Plant methods 2020 v.16 no.1 pp. 22
ISSN:
1746-4811
Subject:
linkage groups,   etc   ; Eriobotrya japonica; aneuploidy; chromosomes; detection; dosage; heterozygosity; hybrids; karyotyping; loquats; microsatellite repeats; open pollination; phenotype; progeny; quantitative polymerase chain reaction; triploidy;     Show all 16 Subjects
Abstract:
... BACKGROUND: Aneuploidy, a condition caused by an imbalance between the relative dosages of chromosomes, generally produces a novel phenotype specific to the molecular karyotype. Few techniques are currently available for detecting the molecular karyotypes of aneuploids in plants. RESULTS: Based on this imbalance in chromosome dosage, a new approach (referred to as ‘SSR-qPCR’) combining simple sequ ...
DOI:
10.1186/s13007-020-00568-7

14. Primary mapping of QTL for growth-related traits in grass carp (Ctenopharyngodon idellus)

Author:
Yu, Chengchen; Xu, Xiaoyan; Li, Jiale; Shen, Yubang
Source:
Aquaculture international 2020 v.28 no.6 pp. 2275-2285
ISSN:
0967-6120
Subject:
linkage groups,   etc   ; Ctenopharyngodon idella; aquaculture; body length; body weight; loci; marker-assisted selection; microsatellite repeats; phenotypic variation; progeny; quantitative trait loci; Yangtze River;     Show all 12 Subjects
Abstract:
... Growth-related traits are economically important in aquaculture, and their variation is linked to quantitative loci (QTLs). For exploring genetic basis of genetic breeding and improvement of grass carp (Ctenopharyngodon idellus), QTL mapping for growth-related traits was performed with an F2 family of grass carp from the Yangtze River system, including 360 offspring. In this study, we mapped QTLs ...
DOI:
10.1007/s10499-020-00594-1

15. Structure and Sequence of the Sex Determining Locus in Two Wild Populations of Nile Tilapia

Author:
Triay, Cécile; Conte, Matthew A.; Baroiller, Jean-François; Bezault, Etienne; Clark, Frances E.; Penman, David J.; Kocher, Thomas D.; D’Cotta, Helena
Source:
Genes 2020 v.11 no.9
ISSN:
2073-4425
Subject:
linkage groups,   etc   ; B chromosomes; Oreochromis niloticus; domestication; females; genetic engineering; genetic variation; lakes; loci; males; phenotype; sequence analysis; sex determination; stop codon; Africa;     Show all 15 Subjects
Abstract:
... In domesticated strains of the Nile tilapia, phenotypic sex has been linked to genetic variants on linkage groups 1, 20 and 23. This diversity of sex-loci might reflect a naturally polymorphic sex determination system in Nile tilapia, or it might be an artefact arising from the process of domestication. Here, we searched for sex-determiners in wild populations from Kpandu, Lake Volta (Ghana-West A ...
DOI:
10.3390/genes11091017

16. Construction of high-resolution genetic linkage map in pear pseudo-BC1 ((Pyrus pyrifolia × P. communis) × P. pyrifolia) using GBS-SNPs and SSRs

Author:
Oh, Sewon; Oh, Youngjae; Kim, Keumsun; Han, Hyeondae; Kim, Yumi; Won, Kyungho; Kim, Daeil
Source:
Horticulture, environment and biotechnology 2020 v.61 no.4 pp. 745-753
ISSN:
2211-3452
Subject:
linkage groups,   etc   ; Aronia arbutifolia; Pyrus communis; Pyrus pyrifolia; alleles; chromosome mapping; genetic analysis; genetic distance; hybrids; microsatellite repeats; pears; plant breeding;     Show all 12 Subjects
Abstract:
... Genetic linkage map of pear ((Pyrus pyrifolia × P. communis) × P. pyrifolia) was constructed to validate the effectiveness of the two-enzyme approach in GBS library preparation. In addition, allele inheritance was analyzed to investigate the usefulness of the pear pseudo-BC₁ in genetic analysis. A total of 905 GBS-SNPs and 69 SSRs were anchored in 17 linkage groups with total genetic distance of 1 ...
DOI:
10.1007/s13580-020-00261-7

17. The First Genetic Map for a Psoraleoid Legume (Bituminaria bituminosa) Reveals Highly Conserved Synteny with Phaseoloid Legumes

Author:
Nelson, Matthew N.; Jabbari, Jafar S.; Turakulov, Rust; Pradhan, Aneeta; Pazos-Navarro, Maria; Stai, Jacob S.; Cannon, Steven B.; Real, Daniel
Source:
Plants 2020 v.9 no.8
ISSN:
2223-7747
Subject:
linkage groups,   etc   ; Bituminaria bituminosa; chromosome mapping; chromosome number; chromosomes; cowpeas; drought tolerance; forage legumes; genes; genomics; genotyping by sequencing; haploidy; nucleotide sequences; plant breeding; soybeans; transcriptome; Canary Islands;     Show all 17 Subjects
Abstract:
... We present the first genetic map of tedera (Bituminaria bituminosa (L.) C.H. Stirton), a drought-tolerant forage legume from the Canary Islands with useful pharmaceutical properties. It is also the first genetic map for any species in the tribe Psoraleeae (Fabaceae). The map comprises 2042 genotyping-by-sequencing (GBS) markers distributed across 10 linkage groups, consistent with the haploid chro ...
DOI:
10.3390/plants9080973

18. Mapping and validation of sex-linked SNP markers in the swimming crab Portunus trituberculatus

Author:
Li, Ronghua; Bekaert, Michaël; Lu, Junkai; Lu, Shaokun; Zhang, Zhouyi; Zhang, Weijia; Shi, Ouwen; Chen, Chen; Mu, Changkao; Song, Weiwei; Migaud, Herve; Wang, Chunlin
Source:
Aquaculture 2020 v.524 pp. 735228
ISSN:
0044-8486
Subject:
linkage groups,   etc   ; Portunus trituberculatus; chromosome mapping; females; genetic markers; genomics; genotyping; heterozygosity; homozygosity; males; marine crustaceans; melting; sequence analysis; sex determination; sex linkage; single nucleotide polymorphism;     Show all 16 Subjects
Abstract:
... Portunus trituberculatus is one of the most commercially important marine crustacean species for both aquaculture and fisheries in Southeast and East Asia. Production of monosex female stocks is attractive in commercial production since females are more profitable than their male counterparts. Identification and mapping of the sex-linked locus is an efficient way to elucidate the mechanisms of sex ...
DOI:
10.1016/j.aquaculture.2020.735228

19. Dissecting Genetic Resistance to Fire Blight in Three Pear Populations

Author:
Zurn, Jason D.; Norelli, John L.; Montanari, Sara; Bell, Richard; Bassil, Nahla V.
Source:
Phytopathology 2020 v.110 no.7 pp. 1305-1311
ISSN:
0031-949X
Subject:
linkage groups,   etc   ; Erwinia amylovora; Pyrus; chromosomes; cultivars; disease resistance; fire blight; genetic resistance; genomics; genotyping; growers; pathogens; pears; plant breeding; progeny; quantitative trait loci; seedlings; shoots; trees;     Show all 19 Subjects
Abstract:
... Fire blight, caused by the bacterial pathogen Erwinia amylovora, is a persistent problem for pear (Pyrus spp.) growers in the United States. Growing resistant cultivars is one of the best options for managing fire blight. The cultivars Potomac and Old Home and the selection NJA2R59T69 display resistance to fire blight. As such, three mapping populations (El Dorado × Potomac, Old Home × Bartlett, a ...
DOI:
10.1094/PHYTO-02-20-0051-R

20. Genome-wide screening of the classical cadherin gene family and cadherin-1 expression response infected with streptococcus agalactiae in nile tilapia (oreochromis niloticus)

Author:
Yang, Shaoyu; Cai, Xiaohui
Source:
Aquaculture reports 2020 v.17 pp. 100393
ISSN:
2352-5134
Subject:
linkage groups,   etc   ; Oreochromis niloticus; Streptococcus agalactiae; amino acids; bioinformatics; brain; cadherins; calcium; genes; intestines; ions; kidneys; open reading frames; pathogens; phylogeny; quantitative polymerase chain reaction; screening; spleen; trisomics;     Show all 19 Subjects
Abstract:
... Classical cadherin gene family relies on calcium ions in playing an important role in adhesion between cells. However, comprehensive studies to identify classical cadherin gene families in Nile tilapia (Oreochromis niloticus) have not been conducted. In this study, 18 classical gene family members were screened from Nile tilapia using various bioinformatics methods. These screened cadherins were r ...
DOI:
10.1016/j.aqrep.2020.100393