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https://www.readbyqxmd.com/read/28649344/historical-demography-and-genetic-differentiation-of-the-giant-freshwater-prawn-macrobrachium-rosenbergii-in-bangladesh-based-on-mitochondrial-and-ddrad-sequence-variation
#1
M M Mahbub Alam, Kristen M Westfall, Snæbjörn Pálsson
Macrobrachium rosenbergii, the giant freshwater prawn, is an important source of high quality protein and occurs naturally in rivers as well as commercial farms in South and South-East Asia, including Bangladesh. This study investigated the genetic variation and population structure of M. rosenbergii sampled from four rivers in Bangladesh (sample size ranged from 19 to 20), assessing sequence variation, both in the mitochondrial cytochrome oxidase subunit 1 (CO1) gene and in 106 single nucleotide polymorphisms (SNPs) sampled randomly from the genome with double digest RAD sequencing (ddRADseq)...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28635965/identification-genealogical-structure-and-population-genetics-of-s-alleles-in-malus-sieversii-the-wild-ancestor-of-domesticated-apple
#2
X Ma, Z Cai, W Liu, S Ge, L Tang
The self-incompatibility (SI) gene that is specifically expressed in pistils encodes the SI-associated ribonuclease (S-RNase), functioning as the female-specificity determinant of a gametophytic SI system. Despite extensive surveys in Malus domestica, the S-alleles have not been fully investigated for Malus sieversii, the primary wild ancestor of the domesticated apple. Here we screened the M. sieversii S-alleles via PCR amplification and sequencing, and identified 14 distinct alleles in this species. By contrast, nearly 40 are present in its close wild relative, Malus sylvestris...
June 21, 2017: Heredity
https://www.readbyqxmd.com/read/28633462/in-reply-genealogy-of-training-in-vascular-neurosurgery
#3
Shakeel A Chowdhry, Robert F Spetzler
No abstract text is available yet for this article.
June 17, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28631189/marco-solinas-from-aristotle-s-teleology-to-darwin-s-genealogy-the-stamp-of-inutility-palgrave-macmillan-basingstoke-2015-200%C3%A2-pp-95-00-hardcover
#4
Bernardino Fantini
No abstract text is available yet for this article.
September 2017: History and Philosophy of the Life Sciences
https://www.readbyqxmd.com/read/28622111/caregiving-for-the-elderly-person-discourses-embedded-in-the-brazilian-practical-guide-for-the-caregiver
#5
Meiriel Tavares Araujo, Isabela Cancio Velloso, Christine Ceci, Mary Ellen Purkis
It is estimated that in 2025, Brazil will have the sixth largest elderly population in the world. Beyond the economic consequences of this projection, this changing demographic portends significant changes in the social realm. The aim of this study was to review and consider a range of government documents directed towards elderly Brazilian citizens that have been developed over the past thirty years to explore the ways that caregivers of older persons are positioned in daily care practices through the discourses such documents deploy...
June 16, 2017: Journal of Aging & Social Policy
https://www.readbyqxmd.com/read/28603037/species-boundaries-in-the-astragalus-cusickii-complex-delimited-using-molecular-phylogenetic-techniques
#6
J C Zimmers, M Thomas, L Yang, A Bombarely, M M Mancuso, M F Wojciechowski, J F Smith
Understanding the source of phenotypic variability is a challenge in the biological sciences. Variation in phenotypes is the result of variation in the genetics and environment the organism experiences, but elucidating the relative contribution of these two parameters can pose problems, especially in the field of systematics. Systematists are challenged to classify biological diversity into groups that share common ancestry. Phenotypic variation can be useful to demonstrate common ancestry, but only when the primary contributor to the variation is under strong genetic control, and thus heritable...
June 8, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28602831/species-boundaries-in-the-human-pathogen-paracoccidioides
#7
David A Turissini, Oscar M Gomez, Marcus M Teixeira, Juan G McEwen, Daniel R Matute
The use of molecular taxonomy for identifying recently diverged species has transformed the study of speciation in fungi. The pathogenic fungus Paracoccidioides spp has been hypothesized to be composed of five phylogenetic species, four of which compose the brasiliensis species complex. Nuclear gene genealogies support this divergence scenario, but mitochondrial loci do not; while all species from the brasiliensis complex are differentiated at nuclear coding loci, they are not at mitochondrial loci. We addressed the source of this incongruity using 11 previously published gene fragments, 10 newly-sequenced nuclear non-coding loci, and 10 microsatellites...
June 5, 2017: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/28596519/the-connection-of-the-genetic-cultural-and-geographic-landscapes-of-transoxiana
#8
Maxat Zhabagin, Elena Balanovska, Zhaxylyk Sabitov, Marina Kuznetsova, Anastasiya Agdzhoyan, Olga Balaganskaya, Marina Chukhryaeva, Nadezhda Markina, Alexey Romanov, Roza Skhalyakho, Valery Zaporozhchenko, Liudmila Saroyants, Dilbar Dalimova, Damir Davletchurin, Shahlo Turdikulova, Yuldash Yusupov, Inkar Tazhigulova, Ainur Akilzhanova, Chris Tyler-Smith, Oleg Balanovsky
We have analyzed Y-chromosomal variation in populations from Transoxiana, a historical region covering the southwestern part of Central Asia. We studied 780 samples from 10 regional populations of Kazakhs, Uzbeks, Turkmens, Dungans, and Karakalpaks using 35 SNP and 17 STR markers. Analysis of haplogroup frequencies using multidimensional scaling and principal component plots, supported by an analysis of molecular variance, showed that the geographic landscape of Transoxiana, despite its distinctiveness and diversity (deserts, fertile river basins, foothills and plains) had no strong influence on the genetic landscape...
June 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28592249/ixora-rubiaceae-on-the-philippines-crossroad-or-cradle
#9
Cecilia I Banag, Arnaud Mouly, Grecebio Jonathan D Alejandro, Birgitta Bremer, Ulrich Meve, Guido W Grimm, Sigrid Liede-Schumann
BACKGROUND: The Philippine archipelago is globally one of the most important model island systems for studying evolutionary processes. However, most plant species on this archipelago have not yet been studied in sufficient detail. The main aim of this study is to unravel the evolutionary history and biogeographic relationships of the Philippine members of the pantropical genus Ixora. RESULTS: The complex plastid and nuclear divergence patterns in Philippine Ixora, documented using tree and network approaches, reveal a highly dynamic evolution in Ixora, involving several phases of radiation and recolonization...
June 7, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28587861/evolutionary-dynamics-of-an-expressed-mhc-class-ii%C3%AE-locus-in-the-ranidae-anura-uncovered-by-genome-walking-and-high-throughput-amplicon-sequencing
#10
Kevin P Mulder, Maria Cortazar-Chinarro, D James Harris, Angelica Crottini, Evan H Campbell Grant, Robert C Fleischer, Anna E Savage
The Major Histocompatibility Complex (MHC) is a genomic region encoding immune loci that are important and frequently used markers in studies of adaptive genetic variation and disease resistance. Given the primary role of infectious diseases in contributing to global amphibian declines, we characterized the hypervariable exon 2 and flanking introns of the MHC Class IIβ chain for 17 species of frogs in the Ranidae, a speciose and cosmopolitan family facing widespread pathogen infections and declines. We find high levels of genetic variation concentrated in the Peptide Binding Region (PBR) of the exon...
June 3, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28582433/travelling-to-the-south-phylogeographic-spatial-diffusion-model-in-monttea-aphylla-plantaginaceae-an-endemic-plant-of-the-monte-desert
#11
Matias C Baranzelli, Andrea Cosacov, Gabriela Ferreiro, Leigh A Johnson, Alicia N Sérsic
Effects of Pleistocene climatic oscillations on plant phylogeographic patterns are relatively well studied in forest, savanna and grassland biomes, but such impacts remain less explored on desert regions of the world, especially in South America. Here, we performed a phylogeographical study of Monttea aphylla, an endemic species of the Monte Desert, to understand the evolutionary history of vegetation communities inhabiting the South American Arid Diagonal. We obtained sequences of three chloroplast (trnS-trnfM, trnH-psbA and trnQ-rps16) and one nuclear (ITS) intergenic spacers from 272 individuals of 34 localities throughout the range of the species...
2017: PloS One
https://www.readbyqxmd.com/read/28578827/a-phylogenetic-framework-for-the-kingdom-fungi-based-on-18s-rrna-gene-sequences
#12
Pablo Yarza, Pelin Yilmaz, Katrin Panzer, Frank Oliver Glöckner, Marlis Reich
The usage of molecular phylogenetic approaches is critical to advance the understanding of systematics and community processes in the kingdom Fungi. Among the possible phylogenetic markers (or combinations of them), the 18S rRNA gene appears currently as the most prominent candidate due to its large availability in public databases and informative content. The purpose of this work was the creation of a reference phylogenetic framework that can serve as ready-to-use package for its application on fungal classification and community analysis...
May 31, 2017: Marine Genomics
https://www.readbyqxmd.com/read/28577564/high-frequency-of-the-recurrent-c-1310_1313delaaga-brca2-mutation-in-the-north-east-of-morocco-and-implication-for-hereditary-breast-ovarian-cancer-prevention-and-control
#13
Fatima-Zahra Laarabi, Ilham Ratbi, Siham Chafai Elalaoui, Loubna Mezzouar, Yassamine Doubaj, Laila Bouguenouch, Karim Ouldim, Noureddine Benjaafar, Abdelaziz Sefiani
BACKGROUND: To date, a limited number of BRCA1/2 germline mutations have been reported in hereditary breast and/or ovarian cancer in the Moroccan population. Less than 20 different mutations of these two genes have been identified in Moroccan patients, and recently we reported a further BRCA2 mutation (c.1310_1313delAAGA; p.Lys437IlefsX22) in three unrelated patients, all from the North-East of the country. We aimed in this study to evaluate the frequency and geographic distribution of this BRCA2 frameshift mutation, in order to access its use as the first-line BRCA genetic testing strategy for Moroccan patients...
June 2, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28575458/letter-genealogy-of-training-in-vascular-neurosurgery
#14
Chandramouli Balasubramanian
No abstract text is available yet for this article.
June 1, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28573031/trajectory-energy-minimization-for-cell-growth-tracking-and-genealogy-analysis
#15
Yin Hu, Su Wang, Nan Ma, Suzanne M Hingley-Wilson, Andrea Rocco, Johnjoe McFadden, Hongying Lilian Tang
Cell growth experiments with a microfluidic device produce large-scale time-lapse image data, which contain important information on cell growth and patterns in their genealogy. To extract such information, we propose a scheme to segment and track bacterial cells automatically. In contrast with most published approaches, which often split segmentation and tracking into two independent procedures, we focus on designing an algorithm that describes cell properties evolving between consecutive frames by feeding segmentation and tracking results from one frame to the next one...
May 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28555659/human-y-chromosome-variation-in-the-genome-sequencing-era
#16
REVIEW
Mark A Jobling, Chris Tyler-Smith
The properties of the human Y chromosome - namely, male specificity, haploidy and escape from crossing over - make it an unusual component of the genome, and have led to its genetic variation becoming a key part of studies of human evolution, population history, genealogy, forensics and male medical genetics. Next-generation sequencing (NGS) technologies have driven recent progress in these areas. In particular, NGS has yielded direct estimates of mutation rates, and an unbiased and calibrated molecular phylogeny that has unprecedented detail...
May 30, 2017: Nature Reviews. Genetics
https://www.readbyqxmd.com/read/28555053/genealogy-of-conjugated-acyclic-polyenes
#17
Haruo Hosoya
Based on the total π-electron energies Eπs of Hückel Molecular Orbital (HMO) method for all the possible isomers of conjugated acyclic polyenes (C₂nH₂n+2) up to n = 7, the structure-stability relation of the possible isomers was analyzed. It was shown that the mean length of conjugation L can roughly predict the ordering of stability among isomers, while the Z-index, or Hosoya-index, can almost perfectly reproduce their stability. Further, the genealogy of the conjugated acyclic polyene family was obtained by drawing systematic diagrams connecting these isomers of different n, and governed by several simple rules...
May 29, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28552262/inferring-epidemiological-dynamics-of-infectious-diseases-using-tajima-s-d-statistic-on-nucleotide-sequences-of-pathogens
#18
Kiyeon Kim, Ryosuke Omori, Kimihito Ito
The estimation of the basic reproduction number is essential to understand epidemic dynamics, and time series data of infected individuals are usually used for the estimation. However, such data are not always available. Methods to estimate the basic reproduction number using genealogy constructed from nucleotide sequences of pathogens have been proposed so far. Here, we propose a new method to estimate epidemiological parameters of outbreaks using the time series change of Tajima's D statistic on the nucleotide sequences of pathogens...
May 1, 2017: Epidemics
https://www.readbyqxmd.com/read/28549094/a-novel-dominant-mutation-in-sag-the-arrestin-1-gene-is-a-common-cause-of-retinitis-pigmentosa-in-hispanic-families-in-the-southwestern-united-states
#19
Lori S Sullivan, Sara J Bowne, Daniel C Koboldt, Elizabeth L Cadena, John R Heckenlively, Kari E Branham, Dianna H Wheaton, Kaylie D Jones, Richard S Ruiz, Mark E Pennesi, Paul Yang, David Davis-Boozer, Hope Northrup, Vsevold V Gurevich, Rui Chen, Mingchu Xu, Yumei Li, David G Birch, Stephen P Daiger
Purpose: To identify the causes of autosomal dominant retinitis pigmentosa (adRP) in a cohort of families without mutations in known adRP genes and consequently to characterize a novel dominant-acting missense mutation in SAG. Methods: Patients underwent ophthalmologic testing and were screened for mutations using targeted-capture and whole-exome next-generation sequencing. Confirmation and additional screening were done by Sanger sequencing. Haplotypes segregating with the mutation were determined using short tandem repeat and single nucleotide variant polymorphisms...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28545796/is-type-d-personality-a-risk-factor-for-all-cause-mortality-a-prospective-population-based-study-among-2625-colorectal-cancer-survivors-from-the-profiles-registry
#20
Dounya Schoormans, Olga Husson, Johan Denollet, Floortje Mols
Objective Our goal was to examine whether Type D personality and its components, negative affectivity (NA) and social inhibition (SI), were associated with all-cause mortality among colorectal cancer (CRC) patients. METHODS: CRC patients diagnosed between 2000 and 2009, as registered in the Dutch population-based Eindhoven Cancer Registry, received a questionnaire on Type D (DS14) on average 5.3years after diagnosis. Survival status (31-12-2013) was obtained from the Central Bureau for Genealogy...
May 2017: Journal of Psychosomatic Research
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