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https://www.readbyqxmd.com/read/27922076/identification-of-bnayucca6-as-a-candidate-gene-for-branch-angle-in-brassica-napus-by-qtl-seq
#1
Hui Wang, Hongtao Cheng, Wenxiang Wang, Jia Liu, Mengyu Hao, Desheng Mei, Rijin Zhou, Li Fu, Qiong Hu
Oilseed rape (Brassica napus L.) is one of the most important oil crops in China as well as worldwide. Branch angle as a plant architecture component trait plays an important role for high density planting and yield performance. In this study, bulked segregant analysis (BSA) combined with next generation sequencing technology was used to fine map QTL for branch angle. A major QTL, designated as branch angle 1 (ba1) was identified on A06 and further validated by Indel marker-based classical QTL mapping in an F2 population...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27921078/data-on-genetic-analysis-of-atherosclerosis-identifies-a-major-susceptibility-locus-in-the-major-histocompatibility-complex-of-mice
#2
Andrew T Grainger, Michael B Jones, Jing Li, Mei-Hua Chen, Ani Manichaikul, Weibin Shi
The data presented here are related to the research article, entitled Genetic analysis of atherosclerosis identifies a major susceptibility locus in the major histocompatibility complex of mice, published in Atherosclerosis 2016;254:124 (A.T. Grainger, M.B. Jones, J. Li, M.H. Chen, A. Manichaikul, W. Shi, 2016) [1]. The supporting materials include original genotypic and phenotypic data obtained from 206 female F2 mice derived from an intercross between BALB and SMJ inbred mice. The F2 mice were fed 12 weeks of Western diet, starting at 6 weeks of age...
December 2016: Data in Brief
https://www.readbyqxmd.com/read/27920783/genomic-tools-in-pearl-millet-breeding-for-drought-tolerance-status-and-prospects
#3
REVIEW
Desalegn D Serba, Rattan S Yadav
Pearl millet [Penisetum glaucum (L) R. Br.] is a hardy cereal crop grown in the arid and semiarid tropics where other cereals are likely to fail to produce economic yields due to drought and heat stresses. Adaptive evolution, a form of natural selection shaped the crop to grow and yield satisfactorily with limited moisture supply or under periodic water deficits in the soil. Drought tolerance is a complex polygenic trait that various morphological and physiological responses are controlled by 100s of genes and significantly influenced by the environment...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27919778/a-mutation-in-the-psst-homologue-of-complex-i-nadh-ubiquinone-oxidoreductase-from-tetranychus-urticae-is-associated-with-resistance-to-meti-acaricides
#4
Sabina Bajda, Wannes Dermauw, Rafaela Panteleri, Naoya Sugimoto, Vassilis Douris, Luc Tirry, Masahiro Osakabe, John Vontas, Thomas Van Leeuwen
The acaricidal compounds pyridaben, tebufenpyrad and fenpyroximate are frequently used in the control of phytophagous mites such as Tetranychus urticae, and are referred to as Mitochondrial Electron Transport Inhibitors, acting at the quinone binding pocket of complex I (METI-I acaricides). Because of their very frequent use, resistance evolved fast more than 20 years ago, and is currently wide-spread. Increased activity of P450 monooxygenases has been often associated with resistance, but target-site based resistance mechanisms were never reported...
December 2, 2016: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27917289/a-high-density-multi-parental-snp-genetic-map-on-apple-validates-a-new-mapping-approach-for-outcrossing-species
#5
Erica A Di Pierro, Luca Gianfranceschi, Mario Di Guardo, Herma Jj Koehorst-van Putten, Johannes W Kruisselbrink, Sara Longhi, Michela Troggio, Luca Bianco, Hélène Muranty, Giulia Pagliarani, Stefano Tartarini, Thomas Letschka, Lidia Lozano Luis, Larisa Garkava-Gustavsson, Diego Micheletti, Marco Cam Bink, Roeland E Voorrips, Ebrahimi Aziz, Riccardo Velasco, François Laurens, W Eric van de Weg
Quantitative trait loci (QTL) mapping approaches rely on the correct ordering of molecular markers along the chromosomes, which can be obtained from genetic linkage maps or a reference genome sequence. For apple (Malus domestica Borkh), the genome sequence v1 and v2 could not meet this need; therefore, a novel approach was devised to develop a dense genetic linkage map, providing the most reliable marker-loci order for the highest possible number of markers. The approach was based on four strategies: (i) the use of multiple full-sib families, (ii) the reduction of missing information through the use of HaploBlocks and alternative calling procedures for single-nucleotide polymorphism (SNP) markers, (iii) the construction of a single backcross-type data set including all families, and (iv) a two-step map generation procedure based on the sequential inclusion of markers...
2016: Horticulture Research
https://www.readbyqxmd.com/read/27917192/mining-centuries-old-in-situ-conserved-turkish-wheat-landraces-for-grain-yield-and-stripe-rust-resistance-genes
#6
Deepmala Sehgal, Susanne Dreisigacker, Savaş Belen, Ümran Küçüközdemir, Zafer Mert, Emel Özer, Alexey Morgounov
Wheat landraces in Turkey are an important genetic resource for wheat improvement. An exhaustive 5-year (2009-2014) effort made by the International Winter Wheat Improvement Programme (IWWIP), a cooperative program between the Ministry of Food, Agriculture and Livestock of Turkey, the International Center for Maize and Wheat Improvement (CIMMYT) and the International Center for Agricultural Research in the Dry Areas (ICARDA), led to the collection and documentation of around 2000 landrace populations from 55 provinces throughout Turkey...
2016: Frontiers in Genetics
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
#7
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/27914204/the-genetic-architecture-of-tristyly-and-its-breakdown-to-self-fertilization
#8
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
#9
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/27903630/genetic-causes-of-phenotypic-adaptation-to-the-second-fermentation-of-sparkling-wines-in-saccharomyces-cerevisiae
#10
Maria Martí-Raga, Emilien Peltier, Albert Mas, Gemma Beltran, Philippe Marullo
Hybridization is known to improve complex traits due to heterosis and phenotypic robustness. However, these phenomena have been rarely explained at the molecular level. Here, the genetic determinism of Saccharomyces cerevisiae fermentation performance was investigated using a QTL-mapping approach on an F1-progeny population. Three main QTLs were detected, with positive alleles coming from both parental strains. The heterosis effect found in the hybrid was partially explained by three loci showing pseudo-overdominance and dominance effect...
November 30, 2016: G3: Genes—Genomes—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
#11
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
#12
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
#13
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/27900399/quantitative-trait-loci-mapping-of-heat-tolerance-in-broccoli-brassica-oleracea-var-italica-using-genotyping-by-sequencing
#14
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/27898967/genomewide-association-analysis-of-growth-traits-in-charolais-beef-cattle
#15
F J Jahuey-Martínez, G M Parra-Bracamonte, A M Sifuentes-Rincón, J C Martínez-González, C Gondro, C A García-Pérez, L A López-Bustamante
The objective of this study was to perform a genomewide association study (GWAS) for growth traits in Charolais beef cattle and to identify SNP markers and genes associated with these traits. Our study included 855 animals genotyped using 76,883 SNP from the GeneSeek Genomic Profiler Bovine HD panel. The examined phenotypic data included birth, weaning, and yearling weights as well as pre- and postweaning ADG. After quality control, 68,337 SNP and 823 animals were retained in the analysis. The association analysis was performed using the principal components method via the egscore function of the GenABEL version 1...
November 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27898882/genome-scan-for-postmortem-carcass-traits-in-nellore-cattle
#16
G A Fernandes Júnior, R B Costa, G M F de Camargo, R Carvalheiro, G J M Rosa, F Baldi, D A Garcia, D G M Gordo, R Espigolan, L Takada, A F B Magalhães, T Bresolin, F L B Feitosa, L A L Chardulo, H N de Oliveira, L G de Albuquerque
Carcass traits measured after slaughter are economically relevant traits in beef cattle. In general, the slaughter house payment system is based on HCW. Ribeye area (REA) is associated with the amount of the meat in the carcass, and a minimum of backfat thickness (BFT) is necessary to protect the carcass during cooling. The aim of this study was to identify potential genomic regions harboring candidate genes affecting those traits in Nellore cattle. The data set used in the present study consisted of 1,756 Nellore males with phenotype records...
October 2016: Journal of Animal Science
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
#17
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
#18
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
#19
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/27898823/genome-wide-association-studies-of-grain-yield-components-in-diverse-sorghum-germplasm
#20
Richard E Boyles, Elizabeth A Cooper, Matthew T Myers, Zachary Brenton, Bradley L Rauh, Geoffrey P Morris, Stephen Kresovich
Grain yield and its primary determinants, grain number and weight, are important traits in cereal crops that have been well studied; however, the genetic basis of and interactions between these traits remain poorly understood. Characterization of grain yield per primary panicle (YPP), grain number per primary panicle (GNP), and 1000-grain weight (TGW) in sorghum [ (L.) Moench], a hardy C cereal with a genome size of ∼730 Mb, was implemented in a diversity panel containing 390 accessions. These accessions were genotyped to obtain 268,830 single-nucleotide polymorphisms (SNPs)...
July 2016: Plant Genome
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