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https://www.readbyqxmd.com/read/28107777/the-dc1-domain-protein-vacuoleless-gametophytes-is-essential-for-female-and-male-gametophyte-development-in-arabidopsis
#1
Sebastián D'Ippólito, Leonardo Agustín Arias, Claudia Anahí Casalongué, Gabriela Carolina Pagnussat, Diego Fernando Fiol
In this work we identified VACUOLELESS GAMETOPHYTES (VLG) as a DC1 domain containing protein present in the endomembrane system essential for both female and male gametophyte development. VLG was originally annotated as a gene coding for an unknown function protein containing DC1 domains. DC1 domains are cysteine and histidine -rich zinc finger domains found exclusively in the plant Kingdom that have been named based on its similarity with the C1 domain present in protein kinase C (PKC). In Arabidopsis, both male and female gametophytes are characterized by the formation of a big vacuole early in development, which is absent in vlg mutant plants...
January 20, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28106853/significant-change-spotting-for-periodic-human-motion-segmentation-of-cleaning-tasks-using-wearable-sensors
#2
Kai-Chun Liu, Chia-Tai Chan
The proportion of the aging population is rapidly increasing around the world, which will cause stress on society and healthcare systems. In recent years, advances in technology have created new opportunities for automatic activities of daily living (ADL) monitoring to improve the quality of life and provide adequate medical service for the elderly. Such automatic ADL monitoring requires reliable ADL information on a fine-grained level, especially for the status of interaction between body gestures and the environment in the real-world...
January 19, 2017: Sensors
https://www.readbyqxmd.com/read/28106833/influence-of-temperature-on-transdermal-penetration-enhancing-mechanism-of-borneol-a-multi-scale-study
#3
Qianqian Yin, Ran Wang, Shufang Yang, Zhimin Wu, Shujuan Guo, Xingxing Dai, Yanjiang Qiao, Xinyuan Shi
The influence of temperature on the transdermal permeation enhancing mechanism of borneol (BO) was investigated using a multi-scale method, containing a coarse-grained molecular dynamic (CG-MD) simulation, an in vitro permeation experiment, and a transmission electron microscope (TEM) study. The results showed that BO has the potential to be used as a transdermal penetration enhancer to help osthole (OST) penetrate into the bilayer. With the increasing temperature, the stratum corneum (SC) becomes more flexible, proving to be synergistic with the permeation enhancement of BO, and the lag time (TLag) of BO and OST are shortened...
January 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28106436/transient-casimir-forces-from-quenches-in-thermal-and-active-matter
#4
Christian M Rohwer, Mehran Kardar, Matthias Krüger
We compute fluctuation-induced (Casimir) forces for classical systems after a temperature quench. Using a generic coarse-grained model for fluctuations of a conserved density, we find that transient forces arise even if the initial and final states are force free. In setups reminiscent of Casimir (planar walls) and van der Waals (small inclusions) interactions, we find comparable exact universal expressions for the force. Dynamical details only scale the time axis of transient force curves. We propose that such quenches can be achieved, for instance, in experiments on active matter, employing tunable activity or interaction protocols...
January 6, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28106248/bacterial-impregnation-of-mineral-fertilizers-improves-yield-and-nutrient-use-efficiency-of-wheat
#5
Shakeel Ahmad, Muhammad Imran, Sabir Hussain, Sajid Mahmood, Azhar Hussain, Muhammad Hasnain
BACKGROUND: The fertilizer use efficiency (FUE) of agricultural crops is generally low which results in poor crop yields and low economic benefits to the farmers. Among the various approaches used to enhance FUE, impregnation of mineral fertilizers with plant growth promoting bacteria (PGPB) is attracting a worldwide attention. The present study was aimed to improve growth, yield and nutrient use efficiency of wheat by bacterially impregnated mineral fertilizers. RESULTS: Results of the pot study revealed that impregnation of diammonium phosphate (DAP) and urea with PGPB was helpful in enhancing the growth, yield, photosynthetic rate, nitrogen use efficiency (NUE) and phosphorus use efficiency (PUE) of wheat...
January 20, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28106116/overexpression-of-mosm1-encoding-for-an-immunity-inducing-protein-from-magnaporthe-oryzae-in-rice-confers-broad-spectrum-resistance-against-fungal-and-bacterial-diseases
#6
Yongbo Hong, Yayun Yang, Huijuan Zhang, Lei Huang, Dayong Li, Fengming Song
Potential of MoSM1, encoding for a cerato-platanin protein from Magnaporthe oryzae, in improvement of rice disease resistance was examined. Transient expression of MoSM1 in rice leaves initiated hypersensitive response and upregulated expression of defense genes. When transiently expressed in tobacco leaves, MoSM1 targeted to plasma membrane. The MoSM1-overexpressing (MoSM1-OE) transgenic rice lines showed an improved resistance, as revealed by the reduced disease severity and decreased in planta pathogen growth, against 2 strains belonging to two different races of M...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28105916/gpcrs-from-fusarium-graminearum-detection-modeling-and-virtual-screening-the-search-for-new-routes-to-control-head-blight-disease
#7
Emmanuel Bresso, Roberto Togawa, Kim Hammond-Kosack, Martin Urban, Bernard Maigret, Natalia Florencio Martins
BACKGOUND: Fusarium graminearum (FG) is one of the major cereal infecting pathogens causing high economic losses worldwide and resulting in adverse effects on human and animal health. Therefore, the development of new fungicides against FG is an important issue to reduce cereal infection and economic impact. In the strategy for developing new fungicides, a critical step is the identification of new targets against which innovative chemicals weapons can be designed. As several G-protein coupled receptors (GPCRs) are implicated in signaling pathways critical for the fungi development and survival, such proteins could be valuable efficient targets to reduce Fusarium growth and therefore to prevent food contamination...
December 15, 2016: BMC Bioinformatics
https://www.readbyqxmd.com/read/28105607/tailoring-the-mesoscopic-tio2-layer-concomitant-parameters-for-enabling-high-performance-perovskite-solar-cells
#8
Taehyun Hwang, Sangheon Lee, Jinhyun Kim, Jaewon Kim, Chunjoong Kim, Byungha Shin, Byungwoo Park
Architectural control over the mesoporous TiO2 film, a common electron-transport layer for organic-inorganic hybrid perovskite solar cells, is conducted by employing sub-micron sized polystyrene beads as sacrificial template. Such tailored TiO2 layer is shown to induce asymmetric enhancement of light absorption notably in the long-wavelength region with red-shifted absorption onset of perovskite, leading to ~20% increase of photocurrent and ~10% increase of power conversion efficiency. This enhancement is likely to be originated from the enlarged CH3NH3PbI3(Cl) grains residing in the sub-micron pores rather than from the effect of reduced perovskite-TiO2 interfacial area, which is supported from optical bandgap change, haze transmission of incident light, and one-diode model parameters correlated with the internal surface area of microporous TiO2 layers...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28103440/carbon-nanotubes-mediate-fusion-of-lipid-vesicles
#9
Ramachandra Moorthy Bhaskara, Stephanie M Linker, Martin Vögele, Juergen Koefinger, Gerhard Hummer
The fusion of lipid membranes is opposed by high energetic barriers. In living organisms, complex protein machineries carry out this biologically essential process. Here we show that membrane-spanning carbon nanotubes (CNTs) can trigger spontaneous fusion of small lipid vesicles. In coarse-grained molecular dynamics simulations, we find that a CNT bridging between two vesicles locally perturbs their lipid structure. Their outer leaflets merge as the CNT pulls lipids out of the membranes, creating an hourglass-shaped fusion intermediate with still intact inner leaflets...
January 19, 2017: ACS Nano
https://www.readbyqxmd.com/read/28103409/zea-mays-fe-deficiency-related-4-zmfdr4-functions-as-an-iron-transporter-in-the-plastids-of-monocots
#10
Xiu-Yue Zhang, Xi Zhang, Qi Zhang, Xiao-Xi Pan, Luo-Chen Yan, Xiao-Juan Ma, Wei-Zhong Zhao, Xiao-Ting Qi, Li-Ping Yin
Iron (Fe)-homeostasis in the plastids is closely associated with Fe transport proteins that prevent Fe from occurring in its toxic free ionic forms. However, the number of known protein families related to Fe transport in the plastids (about 5) and the function of iron in non-green plastids is limited. In the present study, we report the functional characterization of Zea mays Fe deficiency-related 4 (ZmFDR4), which was isolated from a differentially expressed clone of a cDNA library of Fe deficiency-induced maize roots...
January 19, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28103037/effects-of-different-forms-of-selenium-fertilizers-on-se-accumulation-distribution-and-residual-effect-in-winter-wheat-summer-maize-rotation-system
#11
Qi Wang, Yao Yu, Jixiang Li, Yanan Wan, Qingqing Huang, Yanbin Guo, Huafen Li
Foliar Se fertilizers were applied to investigate the effects of Se forms on Se accumulation and distribution in the wheat-maize rotation system and residual concentration of Se in subsequent crops. Sodium selenite, sodium selenate, selenomethionine, chemical nano-Se, humic acid + sodium selenite and compound fertilizer + sodium selenite were applied once at the flowering stage of wheat (30 g ha-1) and at the bell stage of maize (60 g ha-1). Compared with the control treatment, foliar Se applications significant increased the grain Se concentration of wheat and maize by 0...
January 19, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28102498/variation-in-accumulation-and-translocation-of-di-n-butyl-phthalate-dbp-among-rice-oryza-sativa-l-genotypes-and-selection-of-cultivars-for-low-dbp-exposure
#12
Quan-Ying Cai, Pei-Yun Xiao, Hai-Ming Zhao, Huixiong Lü, Qiao-Yun Zeng, Yan-Wen Li, Hui Li, Lei Xiang, Ce-Hui Mo
Di-n-butyl phthalate (DBP) is a typical endocrine-disrupting chemical with higher detection frequency and concentration in agricultural soil (particularly in paddy-field soil of Guangdong Province) of China. In this study, a greenhouse experiment was conducted to investigate variation in uptake and accumulation of DBP by 20 rice cultivars and to screen low DBP-accumulating cultivars. DBP concentrations in plants varied greatly with rice cultivars, growth stages, and tissues. The highest DBP concentrations in both roots and shoots were observed at the ripening stage, with concentrations 2-100-fold higher than those at tillering, jointing, and flowering stages...
January 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28102375/the-dynamic-binding-of-cholesterol-to-the-multiple-sites-of-c99-as-revealed-by-coarse-grained-and-all-atom-simulations
#13
Cheng-Dong Li, Qin Xu, Ruo-Xu Gu, Jing Qu, Dong-Qing Wei
It is generally believed that the etiology of Alzheimer's disease (AD) is closely related to the amyloid-β polypeptides, produced from γ-secretase cleavage of C99. There is preliminary evidence that cholesterol directly activates γ-secretase cleavage of C99 through mechanisms that have not been understood so far. In this article, coarse-grained (CG) and all-atom (AT) simulations were employed to investigate the association between C99 and cholesterol, which is essential for our understanding of the role of cholesterol in the amyloidogenic pathway...
January 19, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28102327/super-strong-materials-for-temperatures-exceeding-2000%C3%A2-%C3%A2-c
#14
Laura Silvestroni, Hans-Joachim Kleebe, William G Fahrenholtz, Jeremy Watts
Ceramics based on group IV-V transition metal borides and carbides possess melting points above 3000 °C, are ablation resistant and are, therefore, candidates for the design of components of next generation space vehicles, rocket nozzle inserts, and nose cones or leading edges for hypersonic aerospace vehicles. As such, they will have to bear high thermo-mechanical loads, which makes strength at high temperature of great importance. While testing of these materials above 2000 °C is necessary to prove their capabilities at anticipated operating temperatures, literature reports are quite limited...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102294/novel-bio-functional-magnesium-coating-on-porous-ti6al4v-orthopaedic-implants-in-vitro-and-in-vivo-study
#15
Xiaokang Li, Peng Gao, Peng Wan, Yifeng Pei, Lei Shi, Bo Fan, Chao Shen, Xin Xiao, Ke Yang, Zheng Guo
Titanium and its alloys with various porous structures are one of the most important metals used in orthopaedic implants due to favourable properties as replacement for hard tissues. However, surface modification is critical to improve the osteointegration of titanium and its alloys. In this study, a bioactive magnesium coating was successfully fabricated on porous Ti6Al4V by means of arc ion plating, which was proved with fine grain size and high film/substrate adhesion. The surface composition and morphology were characterized by X-ray diffraction and SEM equipped with energy dispersive spectroscopy...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102001/evaluation-of-the-hybrid-resolution-pace-model-for-the-study-of-folding-insertion-and-pore-formation-of-membrane-associated-peptides
#16
Michael D Ward, Shivangi Nangia, Eric R May
The PACE force field presents an attractive model for conducting molecular dynamics simulations of membrane-protein systems. PACE is a hybrid model, in which lipids and solvents are coarse-grained consistent with the MARTINI mapping, while proteins are described by a united atom model. However, given PACE is linked to MARTINI, which is widely used to study membranes, the behavior of proteins interacting with membranes has only been limitedly examined in PACE. In this study, PACE is used to examine the behavior of several peptides in membrane environments, namely WALP peptides, melittin and influenza hemagglutinin fusion peptide (HAfp)...
January 19, 2017: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/28101936/quantitative-itraq-based-proteomic-analysis-of-rice-grains-to-assess-high-night-temperature-stress
#17
Hong-Yu Zhang, Gang Lei, Hui-Wen Zhou, Chao He, Jiang-Lin Liao, Ying-Jin Huang
Rice yield and quality are adversely affected by increasing global surface temperature, and are strongly attributed to high night temperature (HNT) than high daytime temperature. However, the molecular mechanism underlying the heat-tolerant characteristics of rice remains unclear. In the present study, we compared the proteomes of heat-tolerant and -sensitive lines of rice at early milky stage using an iTRAQ method. We have identified 38 differentially expressed proteins between the two lines, of which 32 proteins have been functionally annotated in NCBI and/or the UniProt database...
January 19, 2017: Proteomics
https://www.readbyqxmd.com/read/28101830/getting-ahead-of-yourself-parafoveal-word-expectancy-modulates-the-n400-during-sentence-reading
#18
Mallory C Stites, Brennan R Payne, Kara D Federmeier
An important question in the reading literature regards the nature of the semantic information readers can extract from the parafovea (i.e., the next word in a sentence). Recent eye-tracking findings have found a semantic parafoveal preview benefit under many circumstances, and findings from event-related brain potentials (ERPs) also suggest that readers can at least detect semantic anomalies parafoveally (Barber, Van der Meij, & Kutas, Psychophysiology, 50(1), 48-59, 2013). We use ERPs to ask whether fine-grained aspects of semantic expectancy can affect the N400 elicited by a word appearing in the parafovea...
January 18, 2017: Cognitive, Affective & Behavioral Neuroscience
https://www.readbyqxmd.com/read/28100826/biomechanical-properties-of-wheat-grains-the-implications-on-milling
#19
James E Hourston, Michael Ignatz, Martin Reith, Gerhard Leubner-Metzger, Tina Steinbrecher
Millennia of continuous innovation have driven ever increasing efficiency in the milling process. Mechanically characterizing wheat grains and discerning the structure and function of the wheat bran layers can contribute to continuing innovation. We present novel shear force and puncture force testing regimes to characterize different wheat grain cultivars. The forces endured by wheat grains during the milling process can be quantified, enabling us to measure the impact of commonly applied grain pretreatments, such as microwave heating, extended tempering, enzyme and hormone treatments on grains of different 'hardness'...
January 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28099032/pathogenicity-genes-in-ustilaginoidea-virens-revealed-by-a-predicted-protein-protein-interaction-network
#20
Kang Zhang, Yuejiao Li, Tengjiao Li, Zhi-Gang Li, Tom Hsiang, Ziding Zhang, Wenxian Sun
Rice false smut, caused by Ustilaginoidea virens, produces significant loss in rice yield and grain quality, and has recently emerged as one of the most important rice diseases worldwide. Despite its importance in rice production, relatively few studies have been conducted to illustrate the complex interactome and the pathogenicity gene interactions. Here, a protein-protein interaction (PPI) network of U. virens was built through two well-recognized approaches, interolog and domain-domain interaction-based methods...
January 18, 2017: Journal of Proteome Research
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