keyword
MENU ▼
Read by QxMD icon Read
search

Evolution

keyword
https://www.readbyqxmd.com/read/29353419/pleiotropic-effects-of-the-wheat-domestication-gene-q-on-yield-and-grain-morphology
#1
Quan Xie, Na Li, Yang Yang, Yulong Lv, Hongni Yao, Rong Wei, Debbie L Sparkes, Zhengqiang Ma
Transformation from q to Q during wheat domestication functioned outside the boundary of threshability to increase yield, grains m-2, grain weight and roundness, but to reduce grains per spike/spikelet. Mutation of the Q gene, well-known affecting wheat spike structure, represents a key domestication step in the formation of today's free-threshing, economically important wheats. In a previous study, multiple yield components and spike characteristics were associated with the Q gene interval in the bread wheat 'Forno' × European spelt 'Oberkulmer' recombinant inbred line population...
January 20, 2018: Planta
https://www.readbyqxmd.com/read/29353309/methods-for-enhancing-cyanobacterial-stress-tolerance-to-enable-improved-production-of-biofuels-and-industrially-relevant-chemicals
#2
REVIEW
Rebecca L Kitchener, Amy M Grunden
Cyanobacteria are photosynthetic prokaryotes that can fix atmospheric CO2 and can be engineered to produce industrially important compounds such as alcohols, free fatty acids, alkanes used in next-generation biofuels, and commodity chemicals such as ethylene or farnesene. They can be easily genetically manipulated, have minimal nutrient requirements, and are quite tolerant to abiotic stress making them an appealing alternative to other biofuel-producing microbes which require additional carbon sources and plants which compete with food crops for arable land...
January 20, 2018: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29353305/an-investigation-of-the-critical-events-and-influential-factors-to-the-evolution-of-the-u-s-man-and-the-biosphere-program
#3
Jennifer M Thomsen
The UNESCO Man and the Biosphere program has operated for 45 years as an international program that started in the 1970s to conserve biotic communities and provide areas for research, education, and training. The program later evolved in the 1990s to address social and environmental issues in a sustainable manner across a landscape. This program was one of the first efforts that recognized the importance of working beyond park and protected area boundaries and the need to sustain livelihoods as much as the resources...
January 20, 2018: Environmental Management
https://www.readbyqxmd.com/read/29353187/medication-use-in-a-cohort-of-newly-admitted-nursing-home-residents-ageing-nh-in-relation-to-evolving-physical-and-mental-health
#4
Ivana Ivanova, Maarten Wauters, Robert Vander Stichele, Thierry Christiaens, Jonas De Wolf, Tine Dilles, Monique Elseviers
BACKGROUND: Medication use is high among nursing home (NH) residents, but there is a lack of longitudinal studies, determining medication use at admission and its evolution over time. AIM: Describing the evolution of the medication use two years after entering a NH, compared to the baseline observations and exploring the relation to the physical and mental health. METHODS: Data from the observational prospective Ageing@NH study, based on an inception cohort of newly admitted residents at NHs (65+) was used, selecting those consenting and with medication chart available...
January 17, 2018: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/29353096/modification-of-aspergillus-niger-by-conducting-polymer-polypyrrole-and-the-evaluation-of-electrochemical-properties-of-modified-cells
#5
Roxana-Mihaela Apetrei, Geta Carac, Gabriela Bahrim, Almira Ramanaviciene, Arunas Ramanavicius
The enhancement of bioelectrochemical properties of microorganism by in situ formation of conducting polymer within the cell structures (e.g. cell wall) was performed. The synthesis of polypyrrole (Ppy) within fungi (Aspergillus niger) cells was achieved. Two different Aspergillus niger strains were selected due to their ability to produce glucose oxidase, which initiated the Ppy formation through products of enzymatic reaction. The evolution of Ppy structural features was investigated by absorption spectroscopy, cyclic voltammetry and Fourier transform infrared spectroscopy...
January 6, 2018: Bioelectrochemistry
https://www.readbyqxmd.com/read/29353022/using-medical-examiner-case-narratives-to-improve-opioid-overdose-surveillance
#6
Emily Hurstak, Christopher Rowe, Caitlin Turner, Emily Behar, Rachel Cabugao, Nikolas P Lemos, Phillip Coffin
BACKGROUND: Current opioid overdose mortality surveillance methods do not capture the complexity of the overdose epidemic. Most rely on death certificates, which may underestimate both opioid analgesic and heroin deaths. Categorizing deaths using other characteristics from the death record including route of drug administration may provide useful information to design and evaluate overdose prevention interventions. METHODS: We reviewed California Electronic Death Reporting System records and San Francisco Office of the Chief Medical Examiner (OCME) toxicology reports and investigative case narratives for all unintentional opioid overdose deaths in San Francisco County from 2006 to 2012...
January 17, 2018: International Journal on Drug Policy
https://www.readbyqxmd.com/read/29353015/proteomic-and-functional-variation-within-black-snake-venoms-elapidae-pseudechis
#7
Jonathan Goldenberg, Vittoria Cipriani, Timothy N W Jackson, Kevin Arbuckle, Jordan Debono, Daniel Dashevsky, Nadya Panagides, Maria P Ikonomopoulou, Ivan Koludarov, Bin Li, Renan Castro Santana, Amanda Nouwens, Alun Jones, Chris Hay, Nathan Dunstan, Luke Allen, Brian Bush, John J Miles, Lilin Ge, Hang Fai Kwok, Bryan G Fry
Pseudechis (black snakes) is an Australasian elapid snake genus that inhabits much of mainland Australia, with two representatives confined to Papua New Guinea. The present study is the first to analyse the venom of all 9 described Pseudechis species (plus one undescribed species) to investigate the evolution of venom composition and functional activity. Proteomic results demonstrated that the typical Pseudechis venom profile is dominated by phospholipase A2 toxins. Strong cytotoxicity was the dominant function for most species...
January 15, 2018: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/29352991/molecular-monitoring-of-dihydrofolatereductase-dhfr-and-dihydropteroatesynthetase-dhps-associated-with-sulfadoxine-pyrimethamine-resistance-in-plasmodium-vivax-isolates-of-palawan-philippines
#8
Alison Paolo Bareng, Fe Esperanza Espino, Wanna Chaijaroenkul, Kesara Na-Bangchang
The emergence of drug-resistant Plasmodium vivax poses problems for malaria control and elimination in some parts of the world, especially in developing countries where individuals are routinely exposed to the infection. The aim of this study was to determine the single nucleotide polymorphisms (SNPs) in dihydropteroate synthase (pvdhps) and dihydrofolate reductase (pvdhfr) genes associated with sulfadoxine-pyrimethamine (SP) drug resistance among P. vivax isolates collected in Palawan, Philippines. Genetic polymorphisms of pvdhps and pvdhfr were analysed by nested PCR...
January 15, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29352783/addressing-global-uncertainty-and-sensitivity-in-first-principles-based-microkinetic-models-by-an-adaptive-sparse-grid-approach
#9
Sandra Döpking, Craig P Plaisance, Daniel Strobusch, Karsten Reuter, Christoph Scheurer, Sebastian Matera
In the last decade, first-principles-based microkinetic modeling has been developed into an important tool for a mechanistic understanding of heterogeneous catalysis. A commonly known, but hitherto barely analyzed issue in this kind of modeling is the presence of sizable errors from the use of approximate Density Functional Theory (DFT). We here address the propagation of these errors to the catalytic turnover frequency (TOF) by global sensitivity and uncertainty analysis. Both analyses require the numerical quadrature of high-dimensional integrals...
January 21, 2018: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29352691/adopting-an-early-invasive-strategy-for-non-st-elevation-myocardial-infarction-analysis-of-the-portuguese-registry-on-acute-coronary-syndromes
#10
Gonçalo Morgado, Hélder Pereira, Daniel Caldeira
INTRODUCTION: In patients with non-ST-elevation myocardial infarction (NSTEMI), the best timing for coronary angiography is not definitely established, although it is recognized that in high-risk patients it should be performed within the first 24 hours. The aim of this work was to describe the evolution over time of the use of an invasive strategy in the treatment of NSTEMI and in-hospital mortality. METHODS: We performed a retrospective analysis of patients admitted with NSTEMI included in the Portuguese Registry on Acute Coronary Syndromes (ProACS) between 2002 and 2015...
January 15, 2018: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/29352504/trophic-niche-capture-efficiency-and-venom-profiles-of-six-sympatric-ant-eating-spider-species-araneae-zodariidae
#11
Stano Pekár, Lenka Petráková, Ondrej Šedo, Stanislav Korenko, Zbyněk Zdráhal
The arms race between specialist predators and their prey has resulted in the evolution of a variety of specific adaptations. In venomous predators this can include venom composition, particularly if predators are specialised on dangerous prey. Here, we performed an integrative study using six species of highly specialised ant-eating spiders of the genus Zodarion in order to investigate their phylogeny, realised trophic niche, efficacy in the capture of various ant species, and venom composition. Data on natural diet obtained by next-generation sequencing and field observations showed that the six Zodarion species exploit different ant species...
January 19, 2018: Molecular Ecology
https://www.readbyqxmd.com/read/29352488/understanding-intratumor-heterogeneity-by-combining-genome-analysis-and-mathematical-modeling
#12
REVIEW
Atsushi Niida, Satoshi Nagayama, Satoru Miyano, Koshi Mimori
Cancer is composed of multiple cell populations with different genomes. Each of the populations is called a clone (or subclone) and this phenomenon is called intratumor heterogeneity (ITH). ITH is observed in various types of cancers and presumed to be a major cause leading to therapeutic resistance. If a tumor harbors a major clone sensitive to a specific anti-cancer treatment, the tumor shrinks within a given period after the treatment. However, in most cases, a minor clone resistant to the chemotherapy exists in the tumor and predominantly regrows in spite of the intensive therapy...
January 20, 2018: Cancer Science
https://www.readbyqxmd.com/read/29352479/contrasting-effects-of-specialist-and-generalist-herbivores-on-resistance-evolution-in-invasive-plants
#13
Zhijie Zhang, Xiaoyun Pan, Dana Blumenthal, Mark van Kleunen, Mu Liu, Bo Li
Invasive alien plants are likely to be released from specialist herbivores and at the same time encounter biotic resistance from resident generalist herbivores in their new ranges. The Shifting Defense Hypothesis predicts that this will result in evolution of decreased defense against specialist herbivores and increased defense against generalist herbivores. To test this, we performed a comprehensive meta-analysis of 61 common garden studies that provide data on resistance and/or tolerance for both introduced and native populations of 32 invasive plant species...
January 20, 2018: Ecology
https://www.readbyqxmd.com/read/29352366/a-new-class-of-cest-experiment-based-on-selecting-different-magnetization-components-at-the-start-and-end-of-the-cest-relaxation-element-an-application-to-1h-cest
#14
Tairan Yuwen, Lewis E Kay
Chemical exchange saturation transfer (CEST) experiments are becoming increasingly popular for investigating biomolecular exchange dynamics with rates on the order of approximately 50-500 s-1 and a rich toolkit of different methods has emerged over the past few years. Typically, experiments are based on the evolution of longitudinal magnetization, or in some cases two-spin order, during a fixed CEST relaxation delay, with the same class of magnetization prepared at the start and selected at end of the CEST period...
January 19, 2018: Journal of Biomolecular NMR
https://www.readbyqxmd.com/read/29352346/the-evolution-of-breast-reduction-publications-a-bibliometric-analysis
#15
Ümran Muslu
OBJECTIVE: This study aims to make a bibliometric analysis of the studies on breast reduction (BR) between the years 1980 and 2016 and identify important studies through trend topics as well as active authors, countries, universities, scientific journals, and citation and co-citation analyses about BR. BACKGROUND: Although BR looks like one of the cosmetic surgeries performed in order to restore the woman's appearance, in fact it is a reconstructive surgery that eliminates back pain, stance disorder, headache, shoulder pain, back and cervical disk hernia, difficulty in breathing, hollowness caused by bra straps, hygiene problems under breasts (e...
January 19, 2018: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/29352253/tracking-the-evolution-of-transiently-transfected-individual-cells-in-a-microfluidic-platform
#16
Micaela Tamara Vitor, Sébastien Sart, Antoine Barizien, Lucimara Gaziola De La Torre, Charles N Baroud
Transient gene expression (TGE) technology enables the rapid production of large amount of recombinant proteins, without the need of fastidious screening of the producing cells required for stable transfection (ST). However, several barriers must be overcome before reaching the production yields using ST. For optimizing the production yields from suspended cells using TGE, a better understanding of the transfection conditions at the single cell level are required. In this study, a universal droplet microfluidic platform was used to assess the heterogeneities of CHO-S population transiently transfected with cationic liposomes (CL) (lipoplexes) complexed with GFP-coding plasmid DNA (pDNA)...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352182/chloroplast-genomic-resources-for-phylogeny-and-dna-barcoding-a-case-study-on-fritillaria
#17
Yu Bi, Ming-Fang Zhang, Jing Xue, Ran Dong, Yun-Peng Du, Xiu-Hai Zhang
The genus Fritillaria comprises approximately 130 perennial herbaceous species. In the Pharmacopoeia of the People's Republic of China, the bulbs of 11 Fritillaria species are used in Chinese herbal medicines. However, the traditional methods of morphological classification cannot accurately identify closely related species of Fritillaria. Previous studies have attempted to identify these species with universal molecular markers, but insufficient phylogenetic signal was available. In this study, the complete chloroplast genomes of eight Fritillaria species were compared...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352153/biology-culture-co-evolution-in-finite-populations
#18
Bart de Boer, Bill Thompson
Language is the result of two concurrent evolutionary processes: biological and cultural inheritance. An influential evolutionary hypothesis known as the moving target problem implies inherent limitations on the interactions between our two inheritance streams that result from a difference in pace: the speed of cultural evolution is thought to rule out cognitive adaptation to culturally evolving aspects of language. We examine this hypothesis formally by casting it as as a problem of adaptation in time-varying environments...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352141/pressure-effect-on-impurity-local-vibrational-mode-and-phase-transitions-in-n-type-iron-doped-indium-phosphide
#19
Chih-Ming Lin, I-Jui Hsu, Sin-Cheng Lin, Yu-Chun Chuang, Wei-Ting Chen, Yen-Fa Liao, Jenh-Yih Juang
The evolution of iron local vibrational mode (Fe LVM) and phase transitions in n-type iron-doped indium phosphide (InP:Fe) were investigated at ambient temperature. In-situ angle-dispersive X-ray diffraction measurements revealed that InP:Fe starts to transform from zinc-blende (ZB) to rock-salt (RS) structure around 8.2(2) GPa and completes around 16.0(2) GPa. The Raman shift of both transverse and longitudinal optical modes increases monotonically with increasing pressure, while their intensities become indiscernible at 11...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352078/the-highly-divergent-mitochondrial-genomes-indicate-that-the-booklouse-liposcelis-bostrychophila-psocoptera-liposcelididae-is-a-cryptic-species
#20
Shiqian Feng, Qianqian Yang, Hu Li, Fan Song, Václav Stejskal, George P Opit, Wanzhi Cai, Zhihong Li, Renfu Shao
The booklouse, Liposcelis bostrychophila is an important storage pest worldwide. The mt genome of an asexual strain (Beibei, China) of the booklouse, L. bostrychophila, comprises two chromosomes; each chromosome contains approximate half of the 37 genes typically found in animals. The mt genomes of two sexual strains of L. bostrychophila, however, comprise five and seven chromosomes respectively; each chromosome contains one to six genes. To understand mt genome evolution in L. bostrychophila and whether L...
January 19, 2018: G3: Genes—Genomes—Genetics
keyword
keyword
6764
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"