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https://www.readbyqxmd.com/read/28801737/how-is-light-interception-efficiency-related-to-shoot-structure-in-tall-canopy-species
#1
Noriyuki Osada, Tsutom Hiura
Coexistence of multiple species is a fundamental aspect of plant and forest ecology. Although spatial arrangement of leaves within crowns is an important determinant of light interception and productivity, shoot structure varies considerably among coexisting canopy species. We investigated the relative importance of structural traits in determining the light availability of leaves (I) and light interception efficiency at the current-year shoot level (LIECS; the total light interception of leaves divided by shoot biomass) at the top of crowns of 11 canopy species in a cool-temperate forest in Japan...
August 11, 2017: Oecologia
https://www.readbyqxmd.com/read/28800365/the-impact-of-the-orlando-mass-shooting-on-fear-of-victimization-and-gun-purchasing-intentions-not-what-one-might-expect
#2
Wolfgang Stroebe, N Pontus Leander, Arie W Kruglanski
Mass public shootings are typically followed by a spike in gun sales as well as calls for stricter gun control laws. What remains unclear is whether the spike in gun sales is motivated by increased threat perceptions or by concerns about gun control, or whether the sales are mainly driven by non-owners purchasing guns or gun owners adding to their collection. Two surveys of gun owners and non-owners, conducted immediately before and after the Orlando shooting, allowed us to assess its impact on threat perceptions and on gun-purchasing intentions...
2017: PloS One
https://www.readbyqxmd.com/read/28794929/high-frequency-direct-shoot-organogenesis-of-leaf-explants-and-a-comparative-evaluation-of-phytochemicals-antioxidant-potential-of-wild-vs-in-vitro-plant-extracts-of-lysimachia-laxa
#3
Sanjoy Gupta, Tapan Seal, A A Mao, Soneswar Sarma
The present studies were attempted to develop direct shoot organogenesis from in vitro grown leaf explants of Lysimachia laxa and comparative evaluation of phytochemical and antioxidant potential of in vitro raised and wild plants extracts. The fresh leaves of this species are used for deworming gastrointestinal worm infection in traditional medicine. Overexploitation of this species and poor regeneration has led to rapid decline in wild population, therefore, present investigation was attempted to develop an efficient rapid mass propagation protocol for this species...
August 2017: 3 Biotech
https://www.readbyqxmd.com/read/28781134/psychological-effect-of-a-mass-casualty-event-on-general-surgery-residents
#4
William S Havron, Karen Safcsak, Joshua Corsa, Andrew Loudon, Michael L Cheatham
OBJECTIVE: To evaluate the psychological effect of a mass casualty shooting event on general surgery residents. DESIGN: Three and 7 months following the Pulse nightclub mass casualty shooting, the mental well-being of general surgery residents employed at the receiving institution was evaluated. A voluntary and anonymous screening questionnaire for posttraumatic stress disorder (PTSD) and major depression (MD) was administered. Responses were stratified into 2 groups; residents who worked (ON-CALL) and residents who did not work (OFF-CALL) the night of the event...
August 3, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28780690/engineered-silica-nanoparticles-alleviate-the-detrimental-effects-of-na-stress-on-germination-and-growth-of-common-bean-phaseolus-vulgaris
#5
Abdullah H Alsaeedi, Hassan El-Ramady, Tarek Alshaal, Mohamed El-Garawani, Nevien Elhawat, Mahdi Almohsen
During the past 10 years, exploiting engineered nanoparticles in agricultural sector has been rapidly increased. Nanoparticles are used to increase the productivity of different crops particularly under biotic and abiotic stresses. This study aims to test the ability of nanosilica (NS) to ameliorate the detrimental impact of Na(+) with different concentrations on the seed germination and the growth of common bean seedlings. Five doses of Na(+) have been prepared from NaCl, i.e., 1000, 2000, 3000, 4000, and 5000 mg L(-1), and distilled water was applied as a control...
August 5, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28774638/mangrove-endophyte-promotes-reforestation-tree-acacia-polyphylla-growth
#6
Renata Assis Castro, Manuella Nóbrega Dourado, Jaqueline Raquel de Almeida, Paulo Teixeira Lacava, André Nave, Itamar Soares de Melo, João Lucio de Azevedo, Maria Carolina Quecine
Mangroves are ecosystems located in the transition zone between land and sea that serve as a potential source of biotechnological resources. Brazil's extensive coast contains one of the largest mangrove forests in the world (encompassing an area of 25,000km(2) along all the coast). Endophytic bacteria were isolated from the following three plant species: Rhizophora mangle, Laguncularia racemosa and Avicennia nitida. A large number of these isolates, 115 in total, were evaluated for their ability to fix nitrogen and solubilize phosphorous...
July 19, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28733104/comparative-shoot-proteome-analysis-of-two-potato-solanum-tuberosum-l-genotypes-contrasting-in-nitrogen-deficiency-responses-in-vitro
#7
Philipp Meise, Anna Maria Jozefowicz, Ralf Uptmoor, Hans-Peter Mock, Frank Ordon, Annegret Schum
Aiming at a better understanding of the physiological and biochemical background of nitrogen use efficiency, alterations in the shoot proteome under N-deficiency were investigated in two contrasting potato genotypes grown in vitro with 60 and 7.5mM N, respectively. A gel based proteomic approach was applied to identify candidate proteins associated with genotype specific responses to N-deficiency. 21% of the detected proteins differed in abundance between the two genotypes. Between control and N-deficiency conditions 19...
July 18, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28731365/chemical-composition-and-antimigraine-activity-of-essential-oil-of-angelicae-dahuricae-radix
#8
Jingbo Sun, He Li, Jinghui Sun, Huimin Liu, Jianguang Chen, Chunmei Wang
The aim of this study was to explore the chemical composition and the effect of essential oil of Angelicae dahuricae radix on a nitroglycerin (NTG)-induced rat model of migraine. The CO2 supercritical fluid extraction method was optimized for the extraction of essential oil of A. dahuricae radix (EOAD) and its chemical composition was determined. The migraine model was established by subcutaneous injection of NTG (10 mg/kg) 1 h after the last administration of EOAD. The therapeutic effect of EOAD and its underlying mechanism were assessed by monitoring behavioral changes, levels of nitric oxide (NO) in serum and brain tissues, plasma levels of calcitonin gene-related peptide (CGRP) and endothelin (ET), and ET/NO ratio...
August 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28721188/trait-variation-along-elevation-gradients-in-a-dominant-woody-shrub-is-population-specific-and-driven-by-plasticity
#9
Alix A Pfennigwerth, Joseph K Bailey, Jennifer A Schweitzer
Elevation gradients are frequently used as space-for-time substitutions to infer species' trait responses to climate change. However, studies rarely investigate whether trait responses to elevation are widespread or population-specific within a species, and the relative genetic and plastic contributions to such trait responses may not be well understood. Here, we examine plant trait variation in the dominant woody shrub, Rhododendron maximum, along elevation gradients in three populations in the South Central Appalachian Mountains, USA, in both field and common garden environments...
July 2017: AoB Plants
https://www.readbyqxmd.com/read/28704702/plant-architecture-auxin-homeostasis-and-phenol-content-in-arabidopsis-thaliana-grown-in-cadmium-and-zinc-enriched-media
#10
Adriano Sofo, Rocco Bochicchio, Mariana Amato, Nunzia Rendina, Antonella Vitti, Maria Nuzzaci, Maria Maddalena Altamura, Giuseppina Falasca, Federica Della Rovere, Antonio Scopa
A screening strategy using micropropagation glass tubes with a gradient of distances between germinating seeds and a metal-contaminated medium was used for studying alterations in root architecture and morphology of Arabidopsis thaliana treated with cadmium (Cd) and zinc (Zn) at the concentration of 10-20μM and 100-200μM, respectively. Metal concentrations in plant shoots and roots were measured by quadrupole inductively coupled plasma mass spectrometry. After 21days from germination, all plants in the tubes were scanned at high resolution and the root systems analyzed...
September 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28697628/high-dose-alcohol-consumption-predicts-less-reduction-in-post-traumatic-stress-symptoms-after-a-campus-mass-shooting
#11
Jacob B Holzman, David P Valentiner, Susan M Hannan, Douglas G Wallace, Holly K Orcutt
BACKGROUND: Recognizing that alcohol might affect subsequent processing of trauma-related information, this study examined whether high dose alcohol consumption (HDAC) following a campus mass shooting affected the relation between shooting exposure and post-traumatic stress symptoms (PTSS). METHODS: Female participants (N = 691) recorded levels of physical exposure to the shooting event, alcohol use, and PTSS 1 month following the shooting event and 8 months later...
July 11, 2017: Anxiety, Stress, and Coping
https://www.readbyqxmd.com/read/28686491/falling-through-the-cracks-the-decline-of-mental-health-care-and-firearm-violence
#12
John Meszaros
BACKGROUND: This paper argues that the decline in the availability of long-term, intensive mental health services, particularly through state mental health hospital systems, has had negative impacts on firearm-related deaths and possibly on the incidence of mass shooting events. AIMS: Establish the effect of reduced availability of long-term, intensive mental health treatment on firearm-related violence in the United States. METHOD: Ordinary least squares regressions on cross-sectional data of US states...
August 2017: Journal of Mental Health
https://www.readbyqxmd.com/read/28678208/variation-in-yield-responses-to-elevated-co%C3%A2-and-a-brief-high-temperature-treatment-in-quinoa
#13
James A Bunce
Intraspecific variation in crop responses to global climate change conditions would provide opportunities to adapt crops to future climates. These experiments explored intraspecific variation in response to elevated CO₂ and to high temperature during anthesis in Chenopodium quinoa Wild. Three cultivars of quinoa were grown to maturity at 400 ("ambient") and 600 ("elevated") μmol·mol(-1) CO₂ concentrations at 20/14 °C day/night ("control") temperatures, with or without exposure to day/night temperatures of 35/29 °C ("high" temperatures) for seven days during anthesis...
July 5, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28665307/assessing-lead-nickel-and-zinc-pollution-in-topsoil-from-a-historic-shooting-range-rehabilitated-into-a-public-urban-park
#14
Ricardo Urrutia-Goyes, Ariadne Argyraki, Nancy Ornelas-Soto
Soil contamination is a persistent problem in the world. The redevelopment of a site with a historical deposition of metals might conceal the threat of remaining pollution, especially when the site has become a public place. In this study, human health risk assessment is performed after defining the concentrations of Pb, Ni, and Zn in the topsoil of a former shooting range rehabilitated into a public park in the Municipality of Kesariani (Athens, Greece). A methodology that uses inductively coupled plasma mass spectrometry (ICP-MS, 13 samples), another that uses portable X-ray fluorescence (XRF) following a dense sample design (91 samples), and a hybrid approach that combines both, were used to obtain the concentrations of the trace elements...
June 30, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28660338/trends-in-analysis-of-gunshot-residue-for-forensic-purposes
#15
REVIEW
Zuzanna Brożek-Mucha
Detection and identification of organic and inorganic components of gunshot residue are well established within forensic chemistry because of highly characteristic and uncommon features of the products of ammunition discharge at the time and place of a shooting incident in comparison to other materials present in daily life of people. Both types of residue play an important role in establishing various circumstances of a shooting crime, though the most vital one concerns the possibility of relating a suspect with the activity of shooting...
June 28, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28650653/growth-and-metabolic-responses-of-rice-oryza-sativa-l-cultivated-in-phosphorus-deficient-soil-amended-with-tio2-nanoparticles
#16
Zahra Zahra, Naima Waseem, Rubab Zahra, Hwanhui Lee, Mohsin Ali Badshah, Arshad Mehmood, Hyung-Kyoon Choi, Muhammad Arshad
Plants have the natural ability to withstand stress conditions through metabolic adjustments. The present study aimed at investigating the effects of titanium dioxide nanoparticles (TiO2 NPs) application (0, 25, 50, 150, 250, 500, and 750 mg kg(-1)) in phosphorus-deficient soil in terms of growth responses, P contents, and metabolic alterations in rice. TiO2 NPs application increased shoot length up to 14.5%. Phosphorus contents in rice roots, shoots, and grains were increased by 2.6-, 2.4-, and 1.3-fold, respectively, at 750 mg kg(-1) of TiO2 NPs...
July 19, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28643283/role-of-cation-structure-in-the-phytotoxicity-of-ionic-liquids-growth-inhibition-and-oxidative-stress-in-spring-barley-and-common-radish
#17
Robert Biczak, Barbara Pawłowska, Arkadiusz Telesiński, Janusz Kapuśniak
The present study determines the influence of three ionic liquids (ILs) containing cations with diversified structure on the growth and development of spring barley seedlings and common radish leaves. Increasing amounts of 1-butyl-1-methylpyrrolidinium hexafluorophosphate [Pyrrol][PF6], 1-butyl-1-methylpiperidinium hexafluorophosphate [Piper][PF6], and 1-butyl-4-methylpyridinium hexafluorophosphate [Pyrid][PF6] were added to the soil on which both plants were cultivated. The results of this studies showed that the applied ILs were highly toxic for plants, demonstrated by the inhibition of length of plant shoots and roots, decrease of fresh mass, and increase of dry weight content...
June 22, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28642968/enhancing-the-enzymatic-saccharification-of-bamboo-shoot-shell-by-sequential-biological-pretreatment-with-galactomyces-sp-cczu11-1-and-deep-eutectic-solvent-extraction
#18
Yong Dai, Hai-Sheng Zhang, Bin Huan, Yucai He
In this study, sequential biological pretreatment (BP) with Galactomyces sp. CCZU11-1 at 30 °C for 3 days and deep eutectic solvent (DES) choline chloride: oxalic acid (ChCl:OA, 1 mol/2 mol) extraction at 120 °C for 1.5 h was used for pretreating BSS. It was found that combination pretreatment could effectively remove xylan and lignin for enhancing enzymatic saccharification. The reducing sugars and glucose from the hydrolysis of 100 g/L pretreated BSS with complexed cellulases of Galactomyces sp. CCZU11-1 were obtained in the yields of 81...
June 22, 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/28630990/correction-the-true-effect-of-mass-shootings-on-americans
#19
(no author information available yet)
No abstract text is available yet for this article.
June 20, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28617857/variability-in-citxet-expression-and-xet-activity-in-citrus-cultivar-huangguogan-seedlings-with-differed-degrees-of-etiolation
#20
Bo Xiong, Xianjie Gu, Xia Qiu, Zhixiang Dong, Shuang Ye, Guochao Sun, Shengjia Huang, Xinya Liu, Lijuan Xi, Zhihui Wang
Considering the known effects of xyloglucan endotransglycosylase (XET) on plant growth and development, we aimed to determine whether XETs help to regulate the growth and elongation of Huangguogan shoots and roots. We confirmed a possible role for XET during seedling etiolation. Our results revealed that the roots of etiolated seedlings (H-E) were longer than those of green seedlings (H-G). However, shoot length exhibited the opposite pattern. We also observed positive and negative effects on the xyloglucan-degrading activity of XET in the root sub-apical region and shoots of etiolated Huangguogan seedling, respectively...
2017: PloS One
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