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https://www.readbyqxmd.com/read/28535481/graphene-oxide-enzyme-hybrid-nanoflowers-for-efficient-water-soluble-dye-removal
#1
Hui Li, Jingwei Hou, Linlin Duan, Chao Ji, Yatao Zhang, Vicki Chen
High efficient enzyme immobilization on carbon based conductive supports could provide wide applications in energy and environmental science. Here, we synthesized a 3D flower-like structured self-assembly hybrid nanocomposite with copper phosphate, laccase, graphite oxide (GO) and carbon nanotubes (CNTs) via a facile one-pot strategy under mild conditions. The prepared nanocomposite exhibited very high enzyme loading and improved laccase activity. During the formation of the nanocomposite, the copper phosphate-laccase petals were interwined by CNTs, and GO nanosheets were further coated on the petal surface...
May 11, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28533784/the-divergence-of-flowering-time-modulated-by-ft-tfl1-is-independent-to-their-interaction-and-binding-activities
#2
Zhen Wang, Ruiguang Yang, Upendra K Devisetty, Julin N Maloof, Yang Zuo, Jingjing Li, Yuxiao Shen, Jian Zhao, Manzhu Bao, Guogui Ning
FLOWERING LOCUS T (FT) and TERMINAL FLOWER1 (TFL1) proteins share highly conserved amino acid residues but they play opposite regulatory roles in promoting and repressing the flowering response, respectively. Previous substitution models and functional analysis have identified several key amino acid residues which are critical for the promotion of flowering. However, the precise relationship between naturally occurring FT/TFL1 homologs and the mechanism of their role in flowering is still unclear. In this study, FT/TFL1 homologs from eight Rosaceae species, namely, Spiraea cantoniensis, Pyracantha fortuneana, Photinia serrulata, Fragaria ananassa, Rosa hybrida, Prunus mume, Prunus persica and Prunus yedoensis, were isolated...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28533510/manganese-oxide-electrode-with-excellent-electrochemical-performance-for-sodium-ion-batteries-by-pre-intercalation-of-k-and-na-ions
#3
Mengya Feng, Qinghua Du, Li Su, Guowei Zhang, Guiling Wang, Zhipeng Ma, Weimin Gao, Xiujuan Qin, Guangjie Shao
Materials with a layered structure have attracted tremendous attention because of their unique properties. The ultrathin nanosheet structure can result in extremely rapid intercalation/de-intercalation of Na ions in the charge-discharge progress. Herein, we report a manganese oxide with pre-intercalated K and Na ions and having flower-like ultrathin layered structure, which was synthesized by a facile but efficient hydrothermal method under mild condition. The pre-intercalation of Na and K ions facilitates the access of electrolyte ions and shortens the ion diffusion pathways...
May 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28533452/fluorescence-as-a-means-of-colour-signal-enhancement
#4
REVIEW
Justin Marshall, Sonke Johnsen
Fluorescence is a physico-chemical energy exchange where shorter-wavelength photons are absorbed by a molecule and are re-emitted as longer-wavelength photons. It has been suggested a means of communication in several taxa including flowers, pitcher plants, corals, algae, worms, squid, spiders, stomatopods, fish, reptiles, parrots and humans. The surface or object that the pigment molecule is part of appears to glow due to its setting rather than an actual production of light, and this may enhance both signals and, in some cases, camouflage...
July 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28533203/floral-traits-influencing-plant-attractiveness-to-three-bee-species-consequences-for-plant-reproductive-success
#5
Austin A Bauer, Murray K Clayton, Johanne Brunet
PREMISE OF THE STUDY: The ability to attract pollinators is crucial to plants that rely on insects for pollination. We contrasted the roles of floral display size and flower color in attracting three bee species and determined the relationships between plant attractiveness (number of pollinator visits) and seed set for each bee species. METHODS: We recorded pollinator visits to plants, measured plant traits, and quantified plant reproductive success. A zero-inflated Poisson regression model indicated plant traits associated with pollinator attraction...
May 21, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28531965/does-arbuscular-mycorrhizal-fungus-affect-cadmium-uptake-and-chemical-forms-in-rice-at-different-growth-stages
#6
Na Luo, Xing Li, Ao Yu Chen, Li Jun Zhang, Hai Ming Zhao, Lei Xiang, Quan Ying Cai, Ce Hui Mo, Ming Hung Wong, Hui Li
Effects of the arbuscular mycorrhizal fungus (AMF) - Rhizophagus intraradices (a mix of root pieces, mycelium pieces and spores) on the temporal variation of Cd uptake and chemical forms in rice at four growth periods (tillering, jointing, flowering, and ripening stages) were investigated in soil added with 0, 2 and 10mgCdkg(-1). Results showed that the interactions amongst rice growth stages, soil Cd concentrations and mycorrhizal inoculation had significant effects (P˂0.001) on root biomass, straw and root Cd concentrations, and straw Cd chemical forms in rice...
May 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531303/varietal-preferences-and-within-orchard-and-tree-distribution-of-newly-recorded-gall-midges-dasineura-amaramanjarae-and-procontarinia-mangiferae-diptera-cecidomyiidae-from-commercial-mango-cultivars-in-pakistan
#7
H M Rehman, R Mahmood, M Razaq, R Saeed, M Jamil, G V P Reddy
Gall midges (Diptera: Cecidomyiidae) damage mango by feeding on flowers and fruit tissues, inducing galls on leaves, and providing inoculums of anthracnose. Dasineura amaramanjarae Grover and Procontarinia mangiferae (Felt), two gall midges that damage flowers in all mango-growing areas of the world, have recently been recorded in Pakistan, and studies were conducted in 2011 and 2012 on the within-tree and orchard distribution patterns and cultivar preference of both species in Pakistan at one location (Rahim Yar Khan)...
May 22, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28531293/effect-of-expanded-variation-in-anther-position-on-pollinator-visitation-to-wild-radish-raphanus-raphanistrum
#8
Yuval Sapir, Keith Karoly, Vanessa A Koelling, Heather F Sahli, Frances N Knapczyk, Jeffrey K Conner
Background and Aims: Plant-pollinator interactions shape the evolution of flowers. Floral attraction and reward traits have often been shown to affect pollinator behaviour, but the possible effect of efficiency traits on visitation behaviour has rarely been addressed. Anther position, usually considered a trait that influences efficiency of pollen deposition on pollinators, was tested here for its effect on pollinator visitation rates and visit duration in flowers of wild radish, Raphanus raphanistrum ...
May 22, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28531235/rna-seq-analysis-of-gene-expression-for-floral-development-in-crested-wheatgrass-agropyron-cristatum-l
#9
Fangqin Zeng, Bill Biligetu, Bruce Coulman, Michael P Schellenberg, Yong-Bi Fu
Crested wheatgrass [Agropyron cristatum L. (Gaertn.)] is widely used for early spring grazing in western Canada and the development of late maturing cultivars which maintain forage quality for a longer period is desired. However, it is difficult to manipulate the timing of floral transition, as little is known about molecular mechanism of plant maturity in this species. In this study, RNA-Seq and differential gene expression analysis were performed to investigate gene expression for floral initiation and development in crested wheatgrass...
2017: PloS One
https://www.readbyqxmd.com/read/28530795/modelling-living-cells-response-to-surface-tension-and-chemical-patterns
#10
Marco Macis, Francesca Lugli, Francesco Zerbetto
Mechanobiology is an important epigenetic factor. It influences cell functioning and bears on gene induction, protein synthesis, cell growth and differentiation. In the presence of patterned chemical cues, living cells can take shapes that are far from that of a drop of fluid. These shapes are characterized by inward curvatures that are pinned at the points of location of the cues. The mechano-chemical interactions that orchestrate cell behavior is simulated and controlled by modeling the cells as made by parcels of fluid...
May 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28530763/surface-oxygen-vacancy-induced-solar-light-activity-enhancement-of-a-cdwo4-bi2o2co3-core-shell-heterostructure-photocatalyst
#11
Chunming Yang, Guimei Gao, Junjun Zhang, Ruiping Liu, Ruicheng Fan, Ming Zhao, Yongwang Wang, Shucai Gan
A CdWO4/Bi2O2CO3 core-shell heterostructure photocatalyst was fabricated via a facile two-step hydrothermal process. Flower-like Bi2O2CO3 was synthesized and functioned as the cores on which CdWO4 nanorods were coated as the shells. Photoluminescence (PL) spectra and electron paramagnetic resonance (EPR) demonstrate that the CdWO4/Bi2O2CO3 core-shell heterostructure photocatalyst possesses a large amount of oxygen vacancies, which induce defect levels in the band gap and help to broaden light absorption. The photocatalyst exhibits enhanced photocatalytic activity for Rhodamine B (RhB), methylene blue (MB), methyl orange (MO), and colorless contaminant phenol degradation under solar light irradiation...
May 22, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28530701/flower-power-controls-the-flow-of-synaptic-transmission
#12
Dustin M Graham
No abstract text is available yet for this article.
May 22, 2017: Lab Animal
https://www.readbyqxmd.com/read/28530677/whole-genome-resequencing-of-292-pigeonpea-accessions-identifies-genomic-regions-associated-with-domestication-and-agronomic-traits
#13
Rajeev K Varshney, Rachit K Saxena, Hari D Upadhyaya, Aamir W Khan, Yue Yu, Changhoon Kim, Abhishek Rathore, Dongseon Kim, Jihun Kim, Shaun An, Vinay Kumar, Ghanta Anuradha, Kalinati Narasimhan Yamini, Wei Zhang, Sonnappa Muniswamy, Jong-So Kim, R Varma Penmetsa, Eric von Wettberg, Swapan K Datta
Pigeonpea (Cajanus cajan), a tropical grain legume with low input requirements, is expected to continue to have an important role in supplying food and nutritional security in developing countries in Asia, Africa and the tropical Americas. From whole-genome resequencing of 292 Cajanus accessions encompassing breeding lines, landraces and wild species, we characterize genome-wide variation. On the basis of a scan for selective sweeps, we find several genomic regions that were likely targets of domestication and breeding...
May 22, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28530389/bio-inspired-structural-colors-fabricated-with-zno-quasi-ordered-nanostructures
#14
Geon Hwee Kim, Taechang An, Geunbae Lim
Despite their advantages in different applications, structural colors are difficult to use due to the inability to change a structural color once it is implemented, as well as their high fabrication costs; implementing multiple structural colors simultaneously on one substrate is a challenge as well. In this study, structural colors were reproduced using quasi-ordered scattering to mitigate these issues. To this end, a ZnO flower-like structure having unimodal distributions of size and spacing was fabricated by ZnO hydrothermal growth...
May 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28530303/a-highly-sensitive-fet-type-aptasensor-using-flower-like-mos2-nanospheres-for-real-time-detection-of-arsenic-iii
#15
Ji Hyun An, Jyongsik Jang
Arsenic (As) contamination in drinking water is problematic due to its threat to human health. Highly stable, sensitive and selective sensors are needed for As(iii), which is the most toxic of the various forms of arsenic. Herein, we describe the fabrication of field-effect transistor (FET)-type aptasensors for As(iii) detection that is based on carboxylic polypyrrole (CPPy)-coated flower-like MoS2 nanospheres (CFMNSs). Arsenic-binding aptamer-conjugated CFMNSs were integrated into a liquid-ion gated FET system, leading to extraordinary performance with a rapid response (on a time scale of less than 1 s)...
May 22, 2017: Nanoscale
https://www.readbyqxmd.com/read/28530276/focus-a-metaheuristic-algorithm-for-computing-knockouts-from-genome-scale-models-for-strain-optimization
#16
Sarma Mutturi
Although handful tools are available for constraint-based flux analysis to generate knockout strains, most of these are either based on bilevel-MIP or its modifications. However, metaheuristic approaches that are known for their flexibility and scalability have been less studied. Moreover, in the existing tools, sectioning of search space to find optimal knocks has not been considered. Herein, a novel computational procedure, termed as FOCuS (Flower-pOllination coupled Clonal Selection algorithm), was developed to find the optimal reaction knockouts from a metabolic network to maximize the production of specific metabolites...
May 22, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28529515/changes-in-leaf-anatomical-traits-enhanced-photosynthetic-activity-of-soybean-grown-in-hydroponics-with-plant-growth-promoting-microorganisms
#17
Roberta Paradiso, Carmen Arena, Veronica De Micco, Maria Giordano, Giovanna Aronne, Stefania De Pascale
The use of hydroponic systems for cultivation in controlled climatic conditions and the selection of suitable genotypes for the specific environment help improving crop growth and yield. We hypothesized that plant performance in hydroponics could be further maximized by exploiting the action of plant growth-promoting organisms (PGPMs). However, the effects of PGPMs on plant physiology have been scarcely investigated in hydroponics. Within a series of experiments aimed to identify the best protocol for hydroponic cultivation of soybean [Glycine max (L...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28529397/behavior-problems-and-children-s-academic-achievement-a-test-of-growth-curve-models-with-gender-and-racial-differences
#18
Kristen P Kremer, Andrea Flower, Jin Huang, Michael G Vaughn
The aim of this study was to examine the longitudinal association between externalizing and internalizing behavior and children's academic achievement, particularly in terms of whether these variables varied as a function of gender and race. Data pertaining to externalizing and internalizing behavior, academic achievement, gender, and race from three waves of the Child Development Supplement of the Panel Study of Income Dynamics (N = 2028) were used. Results indicate that behavior problems had a negative relationship with academic performance and some of these associations endured over time...
August 2016: Children and Youth Services Review
https://www.readbyqxmd.com/read/28528955/potential-therapeutic-activity-of-phlogacanthus-thyrsiformis-hardow-mabb-flower-extract-and-its-biofabricated-silver-nanoparticles-against-chemically-induced-urolithiasis-in-male-wistar-rats
#19
Poppy Das, Kiran Kumar, Arunai Nambiraj, Reshma Rajan, Rajendra Awasthi, Kamal Dua, Himaja M
Urolithiasis is a painful disorder in which stones are formed in the kidney, bladder or urethra. There are no proper therapeutic treatments available for kidney stones and people suffering from larger stones have to undergo surgery which has many side effects. A natural remedy with therapeutic effects that can dissipate and remove even the larger stones would eliminate the need of a surgery and the risks associated with it. The flowers of Phlogacanthus thyrsiformis used in culinary recipes in the north eastern India are also widely used as a folklore medicine for the treatment of kidney stones and liver disorders...
May 18, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28528644/bypassing-negative-epistasis-on-yield-in-tomato-imposed-by-a-domestication-gene
#20
Sebastian Soyk, Zachary H Lemmon, Matan Oved, Josef Fisher, Katie L Liberatore, Soon Ju Park, Anna Goren, Ke Jiang, Alexis Ramos, Esther van der Knaap, Joyce Van Eck, Dani Zamir, Yuval Eshed, Zachary B Lippman
Selection for inflorescence architecture with improved flower production and yield is common to many domesticated crops. However, tomato inflorescences resemble wild ancestors, and breeders avoided excessive branching because of low fertility. We found branched variants carry mutations in two related transcription factors that were selected independently. One founder mutation enlarged the leaf-like organs on fruits and was selected as fruit size increased during domestication. The other mutation eliminated the flower abscission zone, providing "jointless" fruit stems that reduced fruit dropping and facilitated mechanical harvesting...
May 15, 2017: Cell
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