keyword
MENU ▼
Read by QxMD icon Read
search

Quantitative trait loci

keyword
https://www.readbyqxmd.com/read/27915454/round-fruit-shape-in-wi7239-cucumber-is-controlled-by-two-interacting-quantitative-trait-loci-with-one-putatively-encoding-a-tomato-sun-homolog
#1
Yupeng Pan, Xinjing Liang, Meiling Gao, Hanqiang Liu, Huanwen Meng, Yiqun Weng, Zhihui Cheng
QTL analysis revealed two interacting loci, FS1.2 and FS2.1, underlying round fruit shape in WI7239 cucumber; CsSUN , a homolog of tomato fruit shape gene SUN , was a candidate for FS1.2. Fruit size is an important quality and yield trait in cucumber, but its genetic basis remains poorly understood. Here we reported QTL mapping results on fruit size with segregating populations derived from the cross between WI7238 (long fruit) and WI7239 (round fruit) inbred cucumber lines. Phenotypic data of fruit length and diameter were collected at anthesis, immature and mature fruit stages in four environments...
December 3, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27914629/cytoplasmic-fmr1-interacting-protein-2-is-a-major-genetic-factor-underlying-binge-eating
#2
Stacey L Kirkpatrick, Lisa R Goldberg, Neema Yazdani, R Keith Babbs, Jiayi Wu, Eric R Reed, David F Jenkins, Amanda F Bolgioni, Kelsey I Landaverde, Kimberly P Luttik, Karen S Mitchell, Vivek Kumar, W Evan Johnson, Megan K Mulligan, Pietro Cottone, Camron D Bryant
BACKGROUND: Eating disorders are lethal and heritable; however, the underlying genetic factors are unknown. Binge eating is a highly heritable trait associated with eating disorders that is comorbid with mood and substance use disorders. Therefore, understanding its genetic basis will inform therapeutic development that could improve several comorbid neuropsychiatric conditions. METHODS: We assessed binge eating in closely related C57BL/6 mouse substrains and in an F2 cross to identify quantitative trait loci associated with binge eating...
October 25, 2016: Biological Psychiatry
https://www.readbyqxmd.com/read/27914204/the-genetic-architecture-of-tristyly-and-its-breakdown-to-self-fertilization
#3
Ramesh Arunkumar, Wei Wang, Stephen I Wright, Spencer C H Barrett
The floral polymorphism tristyly involves three style morphs with a reciprocal arrangement of stigma and anther heights governed by two diallelic loci (S and M). Tristyly functions to promote cross-pollination, but modifications to stamen position commonly cause transitions to selfing. Here, we integrate whole genome sequencing and genetic mapping to investigate the genetic architecture of the M locus and the genetic basis of independent transitions to selfing in tristylous Eichhornia paniculata. We crossed independently derived semi-homostylous selfing variants of the long- and mid-styled morph fixed for alternate alleles at the M locus (ssmm and ssMM, respectively) and backcrossed the F1 to the parental ssmm genotype...
December 3, 2016: Molecular Ecology
https://www.readbyqxmd.com/read/27907098/identification-of-qtl-for-fiber-quality-and-yield-traits-using-two-immortalized-backcross-populations-in-upland-cotton
#4
Hantao Wang, Cong Huang, Wenxia Zhao, Baosheng Dai, Chao Shen, Beibei Zhang, Dingguo Li, Zhongxu Lin
Two immortalized backcross populations (DHBCF1s and JMBCF1s) were developed using a recombinant inbred line (RIL) population crossed with the two parents DH962 and Jimian5 (as the males), respectively. The fiber quality and yield component traits of the two backcross populations were phenotyped at four environments (two locations, two years). One hundred seventy-eight quantitative trait loci (QTL) were detected including 76 for fiber qualities and 102 for yield components, explaining 4.08-17.79% of the phenotypic variation (PV)...
2016: PloS One
https://www.readbyqxmd.com/read/27906459/integrative-genomic-analysis-identifies-ancestry-related-expression-quantitative-trait-loci-on-dna-polymerase-%C3%AE-and-supports-the-association-of-genetic-ancestry-with-survival-disparities-in-head-and-neck-squamous-cell-carcinoma
#5
Meganathan P Ramakodi, Karthik Devarajan, Elizabeth Blackman, Denise Gibbs, Danièle Luce, Jacqueline Deloumeaux, Suzy Duflo, Jeffrey C Liu, Ranee Mehra, Rob J Kulathinal, Camille C Ragin
BACKGROUND: African Americans with head and neck squamous cell carcinoma (HNSCC) have a lower survival rate than whites. This study investigated the functional importance of ancestry-informative single-nucleotide polymorphisms (SNPs) in HNSCC and also examined the effect of functionally important genetic elements on racial disparities in HNSCC survival. METHODS: Ancestry-informative SNPs, RNA sequencing, methylation, and copy number variation data for 316 oral cavity and laryngeal cancer patients were analyzed across 178 DNA repair genes...
December 1, 2016: Cancer
https://www.readbyqxmd.com/read/27905878/genomic-prediction-using-preselected-dna-variants-from-a-gwas-with-whole-genome-sequence-data-in-holstein-friesian-cattle
#6
Roel F Veerkamp, Aniek C Bouwman, Chris Schrooten, Mario P L Calus
BACKGROUND: Whole-genome sequence data is expected to capture genetic variation more completely than common genotyping panels. Our objective was to compare the proportion of variance explained and the accuracy of genomic prediction by using imputed sequence data or preselected SNPs from a genome-wide association study (GWAS) with imputed whole-genome sequence data. METHODS: Phenotypes were available for 5503 Holstein-Friesian bulls. Genotypes were imputed up to whole-genome sequence (13,789,029 segregating DNA variants) by using run 4 of the 1000 bull genomes project...
December 1, 2016: Genetics, Selection, Evolution: GSE
https://www.readbyqxmd.com/read/27903611/the-genomic-architecture-of-interactions-between-natural-genetic-polymorphisms-and-environments-in-yeast-growth
#7
Xinzhu Wei, Jianzhi Zhang
Gene-environment interaction (G×E) refers to the phenomenon that the same mutation has different phenotypic effects in different environments. Although quantitative trait loci (QTLs) exhibiting G×E have been reported, little is known about the general properties of G×E and those of its underlying QTLs. Here we use the genotypes of 1005 segregants from a cross between two Saccharomyces cerevisiae strains and the growth rates of these segregants in 47 environments to identify growth rate QTLs (gQTLs) in each environment and QTLs that have different growth effects in each pair of environments (g×eQTLs)...
November 30, 2016: Genetics
https://www.readbyqxmd.com/read/27903236/erratum-to-adrenal-cortex-expression-quantitative-trait-loci-in-a-german-holstein%C3%A2-%C3%A3-%C3%A2-charolais-cross
#8
Bodo Brand, Markus O Scheinhardt, Juliane Friedrich, Daisy Zimmer, Norbert Reinsch, Siriluck Ponsuksili, Manfred Schwerin, Andreas Ziegler
No abstract text is available yet for this article.
November 30, 2016: BMC Genetics
https://www.readbyqxmd.com/read/27902805/genome-wide-association-mapping-reveals-novel-qtl-for-seedling-leaf-rust-resistance-in-a-worldwide-collection-of-winter-wheat
#9
Genqiao Li, Xiangyang Xu, Guihua Bai, Brett F Carver, Robert Hunger, J Michael Bonman, James Kolmer, Hongxu Dong
Leaf rust of wheat ( L.) is a major disease that causes significant yield losses worldwide. The short-lived nature of leaf rust resistance () genes necessitates a continuous search for novel sources of resistance. We performed a genome-wide association study (GWAS) on a panel of 1596 wheat accessions. The panel was evaluated for leaf rust reaction by testing with a bulk of Eriks. () isolates collected from multiple fields of Oklahoma in 2013 and two predominant races in the fields of Oklahoma in 2015. The panel was genotyped with a set of 5011 single-nucleotide polymorphism (SNP) markers...
November 2016: Plant Genome
https://www.readbyqxmd.com/read/27902802/identification-and-characterization-of-quantitative-trait-loci-for-shattering-in-rice-landrace-jiucaiqing-from-taihu-lake-valley-china
#10
Jinping Cheng, Yongqi He, Chengfang Zhan, Bin Yang, Enshun Xu, Hongsheng Zhang, Zhoufei Wang
Easy shattering reduces yield from grain loss during rice ( L.) harvest. We characterized a nonshattering rice landrace Jiucaiqing from Taihu Lake valley in China. The breaking tensile strength (BTS; grams force, gf) of the grain pedicel was measured using a digital force gauge to evaluate the degree of shattering at 0, 7, 14, 21, 28, and 35 d after heading (DAH). The BTS of Jiucaiqing did not significantly decrease with increasing DAH, maintaining a level of 152.2 to 195.9 gf, while that of IR26 decreased greatly during 0 to 14 DAH and finally stabilized at ∼100 gf...
November 2016: Plant Genome
https://www.readbyqxmd.com/read/27902793/snp-discovery-and-qtl-mapping-of-sclerotinia-basal-stalk-rot-resistance-in-sunflower-using-genotyping-by-sequencing
#11
Zahirul I Talukder, Gerald J Seiler, Qijian Song, Guojia Ma, Lili Qi
Basal stalk rot (BSR), caused by the ascomycete fungus (Lib.) de Bary, is a serious disease of sunflower ( L.) in the cool and humid production areas of the world. Quantitative trait loci (QTL) for BSR resistance were identified in a sunflower recombinant inbred line (RIL) population derived from the cross HA 441 × RHA 439. A genotyping-by-sequencing (GBS) approach was adapted to discover single nucleotide polymorphism (SNP) markers. A genetic linkage map was developed comprised of 1053 SNP markers on 17 linkage groups (LGs) spanning 1401...
November 2016: Plant Genome
https://www.readbyqxmd.com/read/27901509/how-does-epistasis-influence-the-response-to-selection
#12
N H Barton
Much of quantitative genetics is based on the 'infinitesimal model', under which selection has a negligible effect on the genetic variance. This is typically justified by assuming a very large number of loci with additive effects. However, it applies even when genes interact, provided that the number of loci is large enough that selection on each of them is weak relative to random drift. In the long term, directional selection will change allele frequencies, but even then, the effects of epistasis on the ultimate change in trait mean due to selection may be modest...
November 30, 2016: Heredity
https://www.readbyqxmd.com/read/27900399/quantitative-trait-loci-mapping-of-heat-tolerance-in-broccoli-brassica-oleracea-var-italica-using-genotyping-by-sequencing
#13
Sandra E Branham, Zachary J Stansell, David M Couillard, Mark W Farnham
Five quantitative trait loci and one epistatic interaction were associated with heat tolerance in a doubled haploid population of broccoli evaluated in three summer field trials. Predicted rising global temperatures due to climate change have generated a demand for crops that are resistant to yield and quality losses from heat stress. Broccoli (Brassica oleracea var. italica) is a cool weather crop with high temperatures during production decreasing both head quality and yield. Breeding for heat tolerance in broccoli has potential to both expand viable production areas and extend the growing season but breeding efficiency is constrained by limited genetic information...
November 29, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27898833/a-cluster-of-nucleotide-binding-site-leucine-rich-repeat-genes-resides-in-a-barley-powdery-mildew-resistance-quantitative-trait-loci-on-7hl
#14
Carlos P Cantalapiedra, Bruno Contreras-Moreira, Cristina Silvar, Dragan Perovic, Frank Ordon, María Pilar Gracia, Ernesto Igartua, Ana M Casas
Powdery mildew causes severe yield losses in barley production worldwide. Although many resistance genes have been described, only a few have already been cloned. A strong QTL (quantitative trait locus) conferring resistance to a wide array of powdery mildew isolates was identified in a Spanish barley landrace on the long arm of chromosome 7H. Previous studies narrowed down the QTL position, but were unable to identify candidate genes or physically locate the resistance. In this study, the exome of three recombinant lines from a high-resolution mapping population was sequenced and analyzed, narrowing the position of the resistance down to a single physical contig...
July 2016: Plant Genome
https://www.readbyqxmd.com/read/27898832/genome-wide-association-and-prediction-reveals-genetic-architecture-of-cassava-mosaic-disease-resistance-and-prospects-for-rapid-genetic-improvement
#15
Marnin D Wolfe, Ismail Y Rabbi, Chiedozie Egesi, Martha Hamblin, Robert Kawuki, Peter Kulakow, Roberto Lozano, Dunia Pino Del Carpio, Punna Ramu, Jean-Luc Jannink
C ( Crantz) is a crucial, under-researched crop feeding millions worldwide, especially in Africa. Cassava mosaic disease (CMD) has plagued production in Africa for over a century. Biparental mapping studies suggest primarily a single major gene mediates resistance. To investigate this genetic architecture, we conducted the first genome-wide association mapping study in cassava with up to 6128 genotyping-by-sequenced African breeding lines and 42,113 reference genome-mapped single-nucleotide polymorphism (SNP) markers...
July 2016: Plant Genome
https://www.readbyqxmd.com/read/27898826/quantitative-trait-loci-mapping-for-tillering-related-traits-in-two-switchgrass-populations
#16
Dan Chang, Yanqi Wu, Linglong Liu, Shuiyi Lu-Thames, Hongxu Dong, Carla Goad, Shiqie Bai, Shiva Makaju, Tilin Fang
Plant tillering and related traits are morphologically important components contributing to switchgrass ( L.) biomass yield. The objectives of this study were to estimate broad-sense heritabilities for tillering-related traits, to analyze correlations between biomass yield and the traits, and to identify quantitative trait loci (QTL) for them. A first-generation selfed population of NL94 plant and a hybrid population between NL94 and SL93 plants were field established in a randomized complete block design with three replications in Stillwater and Perkins, OK...
July 2016: Plant Genome
https://www.readbyqxmd.com/read/27898821/development-of-a-high-density-linkage-map-and-tagging-leaf-spot-resistance-in-pearl-millet-using-genotyping-by-sequencing-markers
#17
Somashekhar M Punnuri, Jason G Wallace, Joseph E Knoll, Katie E Hyma, Sharon E Mitchell, Edward S Buckler, Rajeev K Varshney, Bharat P Singh
Pearl millet [ (L.) R. Br; also (L.) Morrone] is an important crop throughout the world but better genomic resources for this species are needed to facilitate crop improvement. Genome mapping studies are a prerequisite for tagging agronomically important traits. Genotyping-by-sequencing (GBS) markers can be used to build high-density linkage maps, even in species lacking a reference genome. A recombinant inbred line (RIL) mapping population was developed from a cross between the lines 'Tift 99DB' and 'Tift 454'...
July 2016: Plant Genome
https://www.readbyqxmd.com/read/27898820/dissecting-the-genetic-basis-of-resistance-to-soybean-cyst-nematode-combining-linkage-and-association-mapping
#18
Ying-Hui Li, Xue-Hui Shi, Hui-Hui Li, Jochen C Reif, Jia-Jun Wang, Zhang-Xiong Liu, Sang He, Bai-Shuang Yu, Li-Juan Qiu
A set of 585 informative single-nucleotide polymorphism (SNP) loci was used to genotype both a panel of diverse accessions and a set of recombinant inbred lines (RILs) bred from the cross Zhongpin03-5373 (ZP; resistant to SCN) × Zhonghuang13 (ZH; susceptible). The SNP loci are mostly sited within genic sequence in regions of the soybean [ (L.) Merr.] genome thought to harbor genes determining resistance to the soybean cyst nematode (SCN, Ichinohe). The three strongest quantitative trait nucleotides (QTNs) identified by association mapping (AM) involved the genes (a component of the multigene locus ), and (an paralog), as well as some other loci with smaller effects...
July 2016: Plant Genome
https://www.readbyqxmd.com/read/27898815/germplasm-architecture-revealed-through-chromosomal-effects-for-quantitative-traits-in-maize
#19
Rex Bernardo, Addie M Thompson
Germplasm architecture refers to how favorable alleles for a given trait are distributed across the genome in a germplasm collection. Our objective was to assess germplasm architecture for quantitative traits among US maize ( L.) inbreds. A total of 271 inbreds were genotyped at 28,626 single nucleotide polymorphism (SNP) loci and phenotyped for anthesis date, plant height, starch and protein concentration, and resistance to northern corn leaf blight (NCLB, caused by ). Chromosomal effects were calculated as the sum of the trait effects of SNP alleles carried on a specific chromosome by an inbred...
July 2016: Plant Genome
https://www.readbyqxmd.com/read/27898814/software-for-genome-wide-association-studies-in-autopolyploids-and-its-application-to-potato
#20
Umesh R Rosyara, Walter S De Jong, David S Douches, Jeffrey B Endelman
Genome-wide association studies (GWAS) are widely used in diploid species to study complex traits in diversity and breeding populations, but GWAS software tailored to autopolyploids is lacking. The objectives of this research were to (i) develop an R package for autopolyploids based on the + mixed model, (ii) validate the software with simulated data, and (iii) analyze a diversity panel of tetraploid potatoes. A unique feature of the R package, called GWASpoly, is its ability to model different types of polyploid gene action, including additive, simplex dominant, and duplex dominant...
July 2016: Plant Genome
keyword
keyword
21604
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"