keyword
MENU ▼
Read by QxMD icon Read
search

Diversity

keyword
https://www.readbyqxmd.com/read/28724201/variations-in-the-bioactive-compounds-composition-and-biological-activities-of-loofah-luffa-cylindrica-fruits-in-relation-to-maturation-stages
#1
Takoua Ben Hlel, Feten Belhadj, Fatih Gül, Muhammed Altun, Ayşe ŞahinYağlıoğlu, Ibrahim Demirtaş, M Nejib Marzouki
The present work aimed to determine the antioxidant and antiproliferative potential of Luffa cylindrica fruits collected at two different maturation stages and to identify and compare their functional components composition. The methanolic extracts of L. cylindrica fruits harvested at 60 to 65 days after seeding (S1) and 85 to 90 days after seeding (S2) were investigated for their antioxidant activity using various assays. Furthermore, the antiproliferative activity of the extracts against HeLa human cervical cancer cells was explored with xCELLigence real time cell analyzer while the effect of the samples on the membrane integrity of the same cell line was assessed using LDH cytotoxicity leakage assay...
July 19, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28724089/grower-analysis-of-organic-matter-amendments-in-california-orchards
#2
Sat Darshan S Khalsa, Patrick H Brown
Organic matter amendments supply crop nutrients and enhance soil health, yet information specific to orchards is lacking. A survey was conducted to analyze use of these materials by California almond [ (Mill.) D.A. Webb] growers. Significant differences were observed for benefits, concerns, and accessibility to manure and green waste sources and between users and nonusers. Use patterns were significantly influenced by heavy and light users, farm size, and geographic region. Enhanced soil biology was the main benefit attributed to organic matter amendments by both users and nonusers...
May 2017: Journal of Environmental Quality
https://www.readbyqxmd.com/read/28724084/comparison-of-models-and-whole-genome-profiling-approaches-for-genomic-enabled-prediction-of-septoria-tritici-blotch-stagonospora-nodorum-blotch-and-tan-spot-resistance-in-wheat
#3
Philomin Juliana, Ravi P Singh, Pawan K Singh, Jose Crossa, Jessica E Rutkoski, Jesse A Poland, Gary C Bergstrom, Mark E Sorrells
The leaf spotting diseases in wheat that include Septoria tritici blotch (STB) caused by , Stagonospora nodorum blotch (SNB) caused by , and tan spot (TS) caused by pose challenges to breeding programs in selecting for resistance. A promising approach that could enable selection prior to phenotyping is genomic selection that uses genome-wide markers to estimate breeding values (BVs) for quantitative traits. To evaluate this approach for seedling and/or adult plant resistance (APR) to STB, SNB, and TS, we compared the predictive ability of least-squares (LS) approach with genomic-enabled prediction models including genomic best linear unbiased predictor (GBLUP), Bayesian ridge regression (BRR), Bayes A (BA), Bayes B (BB), Bayes Cπ (BC), Bayesian least absolute shrinkage and selection operator (BL), and reproducing kernel Hilbert spaces markers (RKHS-M), a pedigree-based model (RKHS-P) and RKHS markers and pedigree (RKHS-MP)...
July 2017: Plant Genome
https://www.readbyqxmd.com/read/28724075/a-comprehensive-image-based-phenomic-analysis-reveals-the-complex-genetic-architecture-of-shoot-growth-dynamics-in-rice-oryza-sativa
#4
Malachy T Campbell, Qian Du, Kan Liu, Chris J Brien, Bettina Berger, Chi Zhang, Harkamal Walia
Early vigor is an important trait for many rice ( L.)-growing environments. However, genetic characterization and improvement for early vigor is hindered by the temporal nature of the trait and strong genotype × environment effects. We explored the genetic architecture of shoot growth dynamics during the early and active tillering stages by applying a functional modeling and genomewide association (GWAS) mapping approach on a diversity panel of ∼360 rice accessions. Multiple loci with small effects on shoot growth trajectory were identified, indicating a complex polygenic architecture...
July 2017: Plant Genome
https://www.readbyqxmd.com/read/28724071/haplotypes-phased-from-population-transcriptomes-detecting-selection-in-the-initial-adaptation-of-miscanthus-lutarioriparius-to-stressful-environments
#5
Cai-Yun Zhu, Wei Liu, Li-Fang Kang, Qin Xu, Shi-Lai Xing, Yang-Yang Fan, Zhi-Hong Song, Juan Yan, Jian-Qiang Li, Tao Sang
Adaptation is a characteristic that enhances the survival or reproduction of organisms; selection is the critical process leading to adaptive evolution. Therefore, detecting selection is important in studying evolutionary biology. Changes in allele frequency are fundamental to adaptive evolution. The allele frequency of entire genes at the genomic scale is more intensive and precise for analyzing selection effects, compared with simple sequence repeat and single nucleotide polymorphism (SNP) alleles from nuclear gene fragments...
July 2017: Plant Genome
https://www.readbyqxmd.com/read/28724070/marker-trait-association-analysis-of-iron-and-zinc-concentration-in-lentil-lens-culinaris-medik-seeds
#6
Hamid Khazaei, Rajib Podder, Carolyn T Caron, Shudhangshu S Kundu, Marwan Diapari, Albert Vandenberg, Kirstin E Bett
Lentil ( Medik.) seeds are relatively rich in iron (Fe) and zinc (Zn), making lentil a potential crop to aid in the global battle against human micronutrient deficiency. Understanding the genetic basis for uptake of seed Fe and Zn is required to increase sustainable concentrations of these minerals in seeds. The objectives of this study were to characterize genetic variation in seed Fe and Zn concentration and to identify molecular markers associated with these traits across diverse lentil accessions. A set of 138 cultivated lentil accessions from 34 countries were evaluated in four environments (2 sites × 2 yr) in Saskatchewan, Canada...
July 2017: Plant Genome
https://www.readbyqxmd.com/read/28724069/a-distinct-genetic-cluster-in-cultivated-chickpea-as-revealed-by-genome-wide-marker-discovery-and-genotyping
#7
Stefano Pavan, Concetta Lotti, Angelo R Marcotrigiano, Rosa Mazzeo, Nicoletta Bardaro, Valentina Bracuto, Francesca Ricciardi, Francesca Taranto, Nunzio D'Agostino, Adalgisa Schiavulli, Claudio De Giovanni, Cinzia Montemurro, Gabriella Sonnante, Luigi Ricciardi
The accurate description of plant biodiversity is of utmost importance to efficiently address efforts in conservation genetics and breeding. Herein, we report the successful application of a genotyping-by-sequencing (GBS) approach in chickpea ( L.), resulting in the characterization of a cultivated germplasm collection with 3187 high-quality single nucleotide polymorphism (SNP) markers. Genetic structure inference, principal component analysis, and hierarchical clustering all indicated the identification of a genetic cluster corresponding to black-seeded genotypes traditionally cultivated in Southern Italy...
July 2017: Plant Genome
https://www.readbyqxmd.com/read/28724067/multitrait-random-regression-or-simple-repeatability-model-in-high-throughput-phenotyping-data-improve-genomic-prediction-for-wheat-grain-yield
#8
Jin Sun, Jessica E Rutkoski, Jesse A Poland, José Crossa, Jean-Luc Jannink, Mark E Sorrells
High-throughput phenotyping (HTP) platforms can be used to measure traits that are genetically correlated with wheat ( L.) grain yield across time. Incorporating such secondary traits in the multivariate pedigree and genomic prediction models would be desirable to improve indirect selection for grain yield. In this study, we evaluated three statistical models, simple repeatability (SR), multitrait (MT), and random regression (RR), for the longitudinal data of secondary traits and compared the impact of the proposed models for secondary traits on their predictive abilities for grain yield...
July 2017: Plant Genome
https://www.readbyqxmd.com/read/28724066/strategies-for-selecting-crosses-using-genomic-prediction-in-two-wheat-breeding-programs
#9
Bettina Lado, Sarah Battenfield, Carlos Guzmán, Martín Quincke, Ravi P Singh, Susanne Dreisigacker, R Javier Peña, Allan Fritz, Paula Silva, Jesse Poland, Lucía Gutiérrez
The single most important decision in plant breeding programs is the selection of appropriate crosses. The ideal cross would provide superior predicted progeny performance and enough diversity to maintain genetic gain. The aim of this study was to compare the best crosses predicted using combinations of mid-parent value and variance prediction accounting for linkage disequilibrium (V) or assuming linkage equilibrium (V). After predicting the mean and the variance of each cross, we selected crosses based on mid-parent value, the top 10% of the progeny, and weighted mean and variance within progenies for grain yield, grain protein content, mixing time, and loaf volume in two applied wheat ( L...
July 2017: Plant Genome
https://www.readbyqxmd.com/read/28724064/genetic-characterization-of-the-soybean-nested-association-mapping-population
#10
Qijian Song, Long Yan, Charles Quigley, Brandon D Jordan, Edward Fickus, Steve Schroeder, Bao-Hua Song, Yong-Qiang Charles An, David Hyten, Randall Nelson, Katy Rainey, William D Beavis, Jim Specht, Brian Diers, Perry Cregan
A set of nested association mapping (NAM) families was developed by crossing 40 diverse soybean [ (L.) Merr.] genotypes to the common cultivar. The 41 parents were deeply sequenced for SNP discovery. Based on the polymorphism of the single-nucleotide polymorphisms (SNPs) and other selection criteria, a set of SNPs was selected to be included in the SoyNAM6K BeadChip for genotyping the parents and 5600 RILs from the 40 families. Analysis of the SNP profiles of the RILs showed a low average recombination rate...
July 2017: Plant Genome
https://www.readbyqxmd.com/read/28724063/evaluation-of-genetic-diversity-and-host-resistance-to-stem-rust-in-usda-nsgc-durum-wheat-accessions
#11
Shiaoman Chao, Matthew N Rouse, Maricelis Acevedo, Agnes Szabo-Hever, Harold Bockelman, J Michael Bonman, Elias Elias, Daryl Klindworth, Steven Xu
The USDA-ARS National Small Grains Collection (NSGC) maintains germplasm representing global diversity of small grains and their wild relatives. To evaluate the utility of the NSGC durum wheat ( L. ssp. ) accessions, we assessed genetic diversity and linkage disequilibrium (LD) patterns in a durum core subset containing 429 lines with spring growth habit originating from 64 countries worldwide. Genetic diversity estimated using wheat single-nucleotide polymorphism (SNP) markers showed considerable diversity captured in this collection...
July 2017: Plant Genome
https://www.readbyqxmd.com/read/28724061/multi-locus-mixed-model-analysis-of-stem-rust-resistance-in-winter-wheat
#12
Paul D Mihalyov, Virginia A Nichols, Peter Bulli, Matthew N Rouse, Michael O Pumphrey
Genome-wide association mapping is a powerful tool for dissecting the relationship between phenotypes and genetic variants in diverse populations. With the improved cost efficiency of high-throughput genotyping platforms, association mapping is a desirable method of mining populations for favorable alleles that hold value for crop improvement. Stem rust, caused by the fungus f. sp. is a devastating disease that threatens wheat ( L.) production worldwide. Here, we explored the genetic basis of stem rust resistance in a global collection of 1411 hexaploid winter wheat accessions genotyped with 5390 single nucleotide polymorphism markers...
July 2017: Plant Genome
https://www.readbyqxmd.com/read/28723946/the-mitochondrial-genome-of-the-terrestrial-carnivorous-plant-utricularia-reniformis-lentibulariaceae-structure-comparative-analysis-and-evolutionary-landmarks
#13
Saura R Silva, Danillo O Alvarenga, Yani Aranguren, Helen A Penha, Camila C Fernandes, Daniel G Pinheiro, Marcos T Oliveira, Todd P Michael, Vitor F O Miranda, Alessandro M Varani
The carnivorous plants of the family Lentibulariaceae have attained recent attention not only because of their interesting lifestyle, but also because of their dynamic nuclear genome size. Lentibulariaceae genomes span an order of magnitude and include species with the smallest genomes in angiosperms, making them a powerful system to study the mechanisms of genome expansion and contraction. However, little is known about mitochondrial DNA (mtDNA) sequences of this family, and the evolutionary forces that shape this organellar genome...
2017: PloS One
https://www.readbyqxmd.com/read/28723942/comparative-analysis-of-vaginal-microbiota-sampling-using-16s-rrna-gene-analysis
#14
Seppo Virtanen, Ilkka Kalliala, Pekka Nieminen, Anne Salonen
BACKGROUND: Molecular methods such as next-generation sequencing are actively being employed to characterize the vaginal microbiota in health and disease. Previous studies have focused on characterizing the biological variation in the microbiota, and less is known about how factors related to sampling contribute to the results. Our aim was to investigate the impact of a sampling device and anatomical sampling site on the quantitative and qualitative outcomes relevant for vaginal microbiota research...
2017: PloS One
https://www.readbyqxmd.com/read/28723930/does-culture-create-craving-evidence-from-the-case-of-menstrual-chocolate-craving
#15
Julia M Hormes, Martha A Niemiec
Craving is considered a key characteristic of diverse pathologies, but evidence suggests it may be a culture-bound construct. Almost 50% of American women crave chocolate specifically around the onset of menstruation. Research does not support popular accounts implicating physiological factors in menstrual chocolate craving etiology. We tested the novel hypothesis that greater menstrual craving prevalence in the U.S. is the product of internalized cultural norms. Women of diverse backgrounds (n = 275) reported on craving frequency and triggers and completed validated measures of acculturation...
2017: PloS One
https://www.readbyqxmd.com/read/28723912/ginger-and-the-beetle-evidence-of-primitive-pollination-system-in-a-himalayan-endemic-alpine-ginger-roscoea-alpina-zingiberaceae
#16
Babu Ram Paudel, Mani Shrestha, Adrian G Dyer, Qing-Jun Li
The Himalayan endemic alpine genus Roscoea, like other members of ginger family, exhibits the combination of floral traits that would fit pollination by long distant foragers such as bees, birds or flies. We studied the pollination biology of Roscoea alpina, observed potential floral visitors and determined their foraging behaviour, visitation frequency and pollination efficiency, to seek evidence in support of the pollination syndrome hypothesis. We also measured the floral spectra of R. alpina flowers to evaluate if signals fit with the currently known framework for observed floral visitors...
2017: PloS One
https://www.readbyqxmd.com/read/28723902/seed-size-and-its-rate-of-evolution-correlate-with-species-diversification-across-angiosperms
#17
Javier Igea, Eleanor F Miller, Alexander S T Papadopulos, Andrew J Tanentzap
Species diversity varies greatly across the different taxonomic groups that comprise the Tree of Life (ToL). This imbalance is particularly conspicuous within angiosperms, but is largely unexplained. Seed mass is one trait that may help clarify why some lineages diversify more than others because it confers adaptation to different environments, which can subsequently influence speciation and extinction. The rate at which seed mass changes across the angiosperm phylogeny may also be linked to diversification by increasing reproductive isolation and allowing access to novel ecological niches...
July 19, 2017: PLoS Biology
https://www.readbyqxmd.com/read/28723901/2b-rad-genotyping-for-population-genomic-studies-of-chagas-disease-vectors-rhodnius-ecuadoriensis-in-ecuador
#18
Luis E Hernandez-Castro, Marta Paterno, Anita G Villacís, Björn Andersson, Jaime A Costales, Michele De Noia, Sofía Ocaña-Mayorga, Cesar A Yumiseva, Mario J Grijalva, Martin S Llewellyn
BACKGROUND: Rhodnius ecuadoriensis is the main triatomine vector of Chagas disease, American trypanosomiasis, in Southern Ecuador and Northern Peru. Genomic approaches and next generation sequencing technologies have become powerful tools for investigating population diversity and structure which is a key consideration for vector control. Here we assess the effectiveness of three different 2b restriction site-associated DNA (2b-RAD) genotyping strategies in R. ecuadoriensis to provide sufficient genomic resolution to tease apart microevolutionary processes and undertake some pilot population genomic analyses...
July 19, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28723900/the-natural-history-of-acute-ebola-virus-disease-among-patients-managed-in-five-ebola-treatment-units-in-west-africa-a-retrospective-cohort-study
#19
Kelly Skrable, Reshma Roshania, Michaela Mallow, Vanessa Wolfman, Matthew Siakor, Adam C Levine
INTRODUCTION: Previous studies of Ebola Virus Disease (EVD) have focused on clinical symptoms and Ebola virus (EBOV) cycle threshold (CT) values recorded at patient triage. Our study explores EVD symptoms and EBOV CT values from onset of illness to recovery or death in a diverse population of patients. METHODOLOGY/PRINCIPAL FINDINGS: We analyzed clinical care data from EBOV positive patients admitted to five Ebola treatment units in West Africa from 2014-2015. Prevalence of clinical signs/symptoms and CT values were explored using descriptive statistics...
July 19, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28723893/in-vivo-crispr-screening-identifies-ptpn2-as-a-cancer-immunotherapy-target
#20
Robert T Manguso, Hans W Pope, Margaret D Zimmer, Flavian D Brown, Kathleen B Yates, Brian C Miller, Natalie B Collins, Kevin Bi, Martin W LaFleur, Vikram R Juneja, Sarah A Weiss, Jennifer Lo, David E Fisher, Diana Miao, Eliezer Van Allen, David E Root, Arlene H Sharpe, John G Doench, W Nicholas Haining
Immunotherapy with PD-1 checkpoint blockade is effective in only a minority of patients with cancer, suggesting that additional treatment strategies are needed. Here we use a pooled in vivo genetic screening approach using CRISPR-Cas9 genome editing in transplantable tumours in mice treated with immunotherapy to discover previously undescribed immunotherapy targets. We tested 2,368 genes expressed by melanoma cells to identify those that synergize with or cause resistance to checkpoint blockade. We recovered the known immune evasion molecules PD-L1 and CD47, and confirmed that defects in interferon-γ signalling caused resistance to immunotherapy...
July 19, 2017: Nature
keyword
keyword
35178
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"