keyword
MENU ▼
Read by QxMD icon Read
search

Dwarf

keyword
https://www.readbyqxmd.com/read/28548533/novel-dark-matter-constraints-from-antiprotons-in-light-of-ams-02
#1
Alessandro Cuoco, Michael Krämer, Michael Korsmeier
We evaluate dark matter (DM) limits from cosmic-ray antiproton observations using the recent precise AMS-02 measurements. We properly take into account cosmic-ray propagation uncertainties, fitting DM and propagation parameters at the same time and marginalizing over the latter. We find a significant indication of a DM signal for DM masses near 80 GeV, with a hadronic annihilation cross section close to the thermal value, ⟨σv⟩≈3×10^{-26}  cm^{3} s^{-1}. Intriguingly, this signal is compatible with the DM interpretation of the Galactic center gamma-ray excess...
May 12, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28548508/possible-dark-matter-annihilation-signal-in-the-ams-02-antiproton-data
#2
Ming-Yang Cui, Qiang Yuan, Yue-Lin Sming Tsai, Yi-Zhong Fan
Using the latest AMS-02 cosmic-ray antiproton flux data, we search for a potential dark matter annihilation signal. The background parameters about the propagation, source injection, and solar modulation are not assumed a priori but based on the results inferred from the recent B/C ratio and proton data measurements instead. The possible dark matter signal is incorporated into the model self-consistently under a Bayesian framework. Compared with the astrophysical background-only hypothesis, we find that a dark matter signal is favored...
May 12, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28542137/dt-13-synergistically-enhanced-vinorelbine-mediated-mitotic-arrest-through-inhibition-of-foxm1-bicd2-axis-in-non-small-cell-lung-cancer-cells
#3
Hongyang Li, Li Sun, Hang Li, Xiaodan Lv, Herve Semukunzi, Ruiming Li, Jun Yu, Shengtao Yuan, Sensen Lin
Non-small-cell lung cancer (NSCLC) is the most commonly diagnosed malignant disease with the leading cause of cancer-related death. Combination treatment remains the major strategy in the clinical therapy of NSCLC. Vinorelbine (NVB), a semi-synthetic vinca alkaloid, is used for advanced and metastatic NSCLC by destabilizing microtubule formation to induce mitotic arrest and cell death. However, the side effect of NVB heavily affected its effectiveness in clinical therapy. Hence, it is of great significance to develop new agents to synergize with NVB and decrease the adverse effect...
May 25, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28536785/significance-of-accumulation-of-the-alarmone-p-ppgpp-in-chloroplasts-for-controlling-photosynthesis-and-metabolite-balance-during-nitrogen-starvation-in-arabidopsis
#4
Rina Honoki, Sumire Ono, Akira Oikawa, Kazuki Saito, Shinji Masuda
The regulatory nucleotides, guanosine 5'-triphosphate 3'-diphosphate (pppGpp) and guanosine 5'-diphosphate 3'-diphosphate (ppGpp), were originally identified in Escherichia coli, and control a large set of gene expression and enzyme activities. The (p)ppGpp-dependent control of cell activities is referred to as the stringent response. A growing number of (p)ppGpp synthase/hydrolase homologs have been identified in plants, which are localized in plastids in Arabidopsis thaliana. We recently reported that the Arabidopsis mutant overproducing ppGpp in plastids showed dwarf chloroplasts, and transcript levels in the mutant plastids were significantly suppressed...
May 23, 2017: Photosynthesis Research
https://www.readbyqxmd.com/read/28533812/visualization-of-zinc-dynamics-in-intact-plants-using-positron-imaging-of-commercially-available-65-zn
#5
Nobuo Suzui, Yong-Gen Yin, Satomi Ishii, Hitoshi Sekimoto, Naoki Kawachi
BACKGROUND: Positron imaging can be used to non-destructively visualize the dynamics of a positron-emitting radionuclide in vivo, and is therefore a tool for understanding the mechanisms of nutrient transport in intact plants. The transport of zinc, which is one of the most important nutrient elements for plants, has so far been visualized by positron imaging using (62)Zn (half-life: 9.2 h), which is manufactured in the limited number of facilities that have a cyclotron. In contrast, the positron-emitting radionuclide (65)Zn (half-life: 244 days) is commercially available worldwide...
2017: Plant Methods
https://www.readbyqxmd.com/read/28533563/why-do-the-boreal-forest-ecosystems-of-northwestern-europe-differ-from-those-of-western-north-america
#6
Rudy Boonstra, Harry P Andreassen, Stan Boutin, Jan Hušek, Rolf A Ims, Charles J Krebs, Christina Skarpe, Petter Wabakken
The boreal forest is one of the largest terrestrial biomes on Earth. Conifers normally dominate the tree layer across the biome, but other aspects of ecosystem structure and dynamics vary geographically. The cause of the conspicuous differences in the understory vegetation and the herbivore-predator cycles between northwestern Europe and western North America presents an enigma. Ericaceous dwarf shrubs and 3- to 4-year vole-mustelid cycles characterize the European boreal forests, whereas tall deciduous shrubs and 10-year snowshoe hare-lynx cycles characterize the North American ones...
September 1, 2016: Bioscience
https://www.readbyqxmd.com/read/28533204/diverse-early-dwarf-mistletoes-arceuthobium-ecological-keystones-of-the-eocene-baltic-amber-biota
#7
Eva-Maria Sadowski, Leyla J Seyfullah, Carol A Wilson, Clyde L Calvin, Alexander R Schmidt
PREMISE OF THE STUDY: Extant dwarf mistletoes (Arceuthobium M. Bieb., Viscaceae) are hemiparasites with complex roles in nature. They are one of the most severe pests in northern hemisphere conifer forests, but they also enhance the structural complexity and species diversity of the forests. Here, we describe the first pre-Miocene macrofossils of dwarf mistletoes. The fossils from Eocene Baltic amber provide new insights into the morphological evolution of the Arceuthobium lineage and its paleobiogeography...
May 21, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28532403/assessing-the-impoverishment-effects-of-out-of-pocket-healthcare-payments-prior-to-the-uptake-of-the-national-health-insurance-scheme-in-ghana
#8
James Akazili, John Ele-Ojo Ataguba, Edmund Wedam Kanmiki, John Gyapong, Osman Sankoh, Abraham Oduro, Di McIntyre
BACKGROUND: There is a global concern regarding how households could be protected from relatively large healthcare payments which are a major limitation to accessing healthcare. Such payments also endanger the welfare of households with the potential of moving households into extreme impoverishment. This paper examines the impoverishing effects of out-of-pocket (OOP) healthcare payments in Ghana prior to the introduction of Ghana's national health insurance scheme. METHODS: Data come from the Ghana Living Standard Survey 5 (2005/2006)...
May 22, 2017: BMC International Health and Human Rights
https://www.readbyqxmd.com/read/28529264/communities-of-putative-ericoid-mycorrhizal-fungi-isolated-from-alpine-dwarf-shrubs-in-japan-effects-of-host-identity-and-microhabitat
#9
Takahiko Koizumi, Kazuhide Nara
Dwarf shrubs of the family Ericaceae are common in arctic and alpine regions. Many of these plants are associated with ericoid mycorrhizal (ERM) fungi, which allow them to take nutrients and water from the soil under harsh environmental conditions and, thus, affect host plant survival. Despite the importance of ERM fungi to alpine plant communities, limited information is available on the effects of microhabitat and host identity on ERM fungal communities. We investigated the communities of putative ERM fungi isolated from five dwarf shrub species (Arcterica nana, Diapensia lapponica, Empetrum nigrum, Loiseleuria procumbens, and Vaccinium vitis-idaea) that co-occur in an alpine region of Japan, with reference to distinct microhabitats provided by large stone pine (Pinus pumila) shrubs (i...
May 20, 2017: Microbes and Environments
https://www.readbyqxmd.com/read/28527803/using-brown-midrib-6-dwarf-forage-sorghum-silage-and-fall-grown-oat-silage-in-lactating-dairy-cow-rations
#10
M T Harper, J Oh, F Giallongo, J C Lopes, G W Roth, A N Hristov
Double cropping and increasing crop diversity could improve dairy farm economic and environmental sustainability. In this experiment, corn silage was partially replaced with 2 alternative forages, brown midrib-6 brachytic dwarf forage sorghum (Sorghum bicolor) or fall-grown oat (Avena sativa) silage, in the diet of lactating dairy cows. We investigated the effect on dry matter (DM) intake, milk yield (MY), milk components and fatty acid profile, apparent total-tract nutrient digestibility, N utilization, enteric methane emissions, and income over feed cost...
May 17, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28524115/label-free-quantitative-proteomic-analysis-of-chitosan-oligosaccharide-treated-rice-infected-with-southern-rice-black-streaked-dwarf-virus
#11
Anming Yang, Lu Yu, Zhuo Chen, Shanxue Zhang, Jing Shi, Xiaozhen Zhao, Yuanyou Yang, Deyu Hu, Baoan Song
Southern rice black-streaked dwarf virus (SRBSDV) has spread from thesouth of China to the north of Vietnam in the past few years and severelyinfluenced rice production. Its long incubation period and early symptoms are not evident; thus, controlling it is difficult. Chitosan oligosaccharide (COS) is a green plant immunomodulator. Early studies showed that preventing and controlling SRBSDV have a certain effect and reduce disease infection rate, but its underlying controlling and preventing mechanism is unclear...
May 18, 2017: Viruses
https://www.readbyqxmd.com/read/28522394/interaction-research-on-an-antiviral-molecule-that-targets-the-coat-protein-of-southern-rice-black-streaked-dwarf-virus
#12
Longlu Ran, Yan Ding, Liangzhi Luo, Xiuhai Gan, Xiangyang Li, Yongzhong Chen, Deyu Hu, Baoan Song
Southern rice black-streaked dwarf virus (SRBSDV) coat protein (P10) is the key protein required for viral transmission and host plant infection and is thus a promising target for anti-SRBSDV agent screening. In this study, P10 was obtained from Escherichia coli through cloning, expression, and purification. The antiviral agent Ningnanmycin was selected as control, and a series of antiviral compounds based on the structural scaffold of ferulic acid were analyzed. Size-exclusion chromatography analysis results showed that compound F27 can alter the aggregation of P10 proteins...
May 15, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28516384/a-mutant-in-the-csdet2-gene-leads-to-a-systemic-brassinosteriod-deficiency-and-super-compact-phenotype-in-cucumber-cucumis-sativus-l
#13
Shanshan Hou, Huanhuan Niu, Qianyi Tao, Shenhao Wang, Zhenhui Gong, Sen Li, Yiqun Weng, Zheng Li
A novel dwarf cucumber mutant, scp-2, displays a typical BR biosynthesis-deficient phenotype, which is due to a mutation in CsDET2 for a steroid 5-alpha-reductase. Brassinosteroids (BRs) are a group of plant hormones that play important roles in the development of plant architecture, and extreme dwarfism is a typical outcome of BR-deficiency. Most cucumber (Cucumis sativus L.) varieties have an indeterminate growth habit, and dwarfism may have its value in manipulation of plant architecture and improve production in certain production systems...
May 17, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28513780/reduction-of-the-dna-damages-hepatoprotective-effect-and-antioxidant-potential-of-the-coconut-water-ascorbic-and-caffeic-acids-in-oxidative-stress-mediated-by-ethanol
#14
Vanderson S Bispo, Lucas S Dantas, Adriano B Chaves, Isabella F D Pinto, Railmara P DA Silva, Felipe A M Otsuka, Rodrigo B Santos, Aline C Santos, Danielle J Trindade, Humberto R Matos
Hepatic disorders such as steatosis and alcoholic steatohepatitis are common diseases that affect thousands of people around the globe. This study aims to identify the main phenol compounds using a new HPLC-ESI+-MS/MS method, to evaluate some oxidative stress parameters and the hepatoprotective action of green dwarf coconut water, caffeic and ascorbic acids on the liver and serum of rats treated with ethanol. The results showed five polyphenols in the lyophilized coconut water spiked with standards: chlorogenic acid (0...
May 15, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28512383/effects-of-cover-crops-on-pratylenchus-penetrans-and-the-nematode-community-in-carrot-production
#15
Zane J Grabau, Zin Thu Zar Maung, D Corey Noyes, Dean G Baas, Benjamin P Werling, Daniel C Brainard, Haddish Melakeberhan
Cover cropping is a common practice in U.S. Midwest carrot production for soil conservation, and may affect soil ecology and plant-parasitic nematodes-to which carrots are very susceptible. This study assessed the impact of cover crops-oats (Avena sativa), radish (Raphanus sativus) cv. Defender, rape (Brassica napus) cv. Dwarf Essex, and a mixture of oats and radish-on plant-parasitic nematodes and soil ecology based on the nematode community in Michigan carrot production systems. Research was conducted at two field sites where cover crops were grown in Fall 2014 preceding Summer 2015 carrot production...
March 2017: Journal of Nematology
https://www.readbyqxmd.com/read/28499064/enhancing-auxin-accumulation-in-maize-root-tips-improves-root-growth-and-dwarfs-plant-height
#16
Zhaoxia Li, Xinrui Zhang, Yajie Zhao, Yujie Li, Guangfeng Zhang, Zhenghua Peng, Juren Zhang
Maize is a globally important food, feed crop and raw material for the food and energy industry. Plant architecture optimization plays important roles in maize yield improvement. PIN-FORMED (PIN) proteins are important for regulating auxin spatio-temporal asymmetric distribution in multiple plant developmental processes. In this study, ZmPIN1a overexpression in maize increased the number of lateral roots and inhibited their elongation, forming a developed root system with longer seminal roots and denser lateral roots...
May 12, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28495743/a-probable-dwarf-planet-beyond-neptune
#17
Keith T Smith
No abstract text is available yet for this article.
May 12, 2017: Science
https://www.readbyqxmd.com/read/28494021/rice-black-streaked-dwarf-virus-p7-2-forms-a-scf-complex-through-binding-to-oryza-sativa-skp1-like-proteins-and-interacts-with-gid2-involved-in-the-gibberellin-pathway
#18
Tao Tao, Cui-Ji Zhou, Qian Wang, Xiang-Ru Chen, Qian Sun, Tian-Yu Zhao, Jian-Chun Ye, Ying Wang, Zong-Ying Zhang, Yong-Liang Zhang, Ze-Jian Guo, Xian-Bing Wang, Da-Wei Li, Jia-Lin Yu, Cheng-Gui Han
As a core subunit of the SCF complex that promotes protein degradation through the 26S proteasome, S-phase kinase-associated protein 1 (SKP1) plays important roles in multiple cellular processes in eukaryotes, including gibberellin (GA), jasmonate, ethylene, auxin and light responses. P7-2 encoded by Rice black streaked dwarf virus (RBSDV), a devastating viral pathogen that causes severe symptoms in infected plants, interacts with SKP1 from different plants. However, whether RBSDV P7-2 forms a SCF complex and targets host proteins is poorly understood...
2017: PloS One
https://www.readbyqxmd.com/read/28488280/open-tundra-persist-but-arctic-features-decline-vegetation-changes-in-the-warming-fennoscandian-tundra
#19
Katariina E M Vuorinen, Lauri Oksanen, Tarja Oksanen, Anni Pyykönen, Johan Olofsson, Risto Virtanen
In the forest-tundra ecotone of the North Fennoscandian inland, summer and winter temperatures have increased by two to three centigrades since 1965, which is expected to result in major vegetation changes. To document the expected expansion of woodlands and scrublands and its impact on the arctic vegetation, we repeated a vegetation transect study conducted in 1976 in the Darju, spanning from woodland to a summit, 200 m above the tree line. Contrary to our expectations, tree line movement was not detected, and there was no increase in willows or shrubby mountain birches, either...
May 10, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28484469/long-term-overgrazing-induced-memory-decreases-photosynthesis-of-clonal-offspring-in-a-perennial-grassland-plant
#20
Weibo Ren, Ningning Hu, Xiangyang Hou, Jize Zhang, Huiqin Guo, Zhiying Liu, Lingqi Kong, Zinian Wu, Hui Wang, Xiliang Li
Previous studies of transgenerational plasticity have demonstrated that long-term overgrazing experienced by Leymus chinensis, an ecologically dominant, rhizomatous grass species in eastern Eurasian temperate grassland, significantly affects its clonal growth in subsequent generations. However, there is a dearth of information on the reasons underlying this overgrazing-induced memory effect in plant morphological plasticity. We characterized the relationship between a dwarf phenotype and photosynthesis function decline of L...
2017: Frontiers in Plant Science
keyword
keyword
17452
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"