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https://www.readbyqxmd.com/read/28550630/the-effects-of-different-sewage-sludge-amendment-rates-on-the-heavy-metal-bioaccumulation-growth-and-biomass-of-cucumbers-cucumis-sativus-l
#1
Ebrahem M Eid, Sulaiman A Alrumman, Ahmed F El-Bebany, Abd El-Latif Hesham, Mostafa A Taher, Khaled F Fawy
When sewage sludge is incorrectly applied, it may adversely impact agro-system productivity. Thus, this study addresses the reaction of Cucumis sativus L. (cucumber) to different amendment rates (0, 10, 20, 30, 40 and 50 g kg(-1)) of sewage sludge in a greenhouse pot experiment, in which the plant growth, heavy metal uptake and biomass were evaluated. A randomized complete block design with six treatments and six replications was used as the experimental design. The soil electrical conductivity, organic matter and Cr, Fe, Zn and Ni concentrations increased, but the soil pH decreased in response to the sewage sludge applications...
May 26, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28549547/a-systematic-review-on-ricochet-gunshot-injuries
#2
REVIEW
Yuw-Er Yong
Ricocheted bullets may still retain sufficient kinetic energy to cause gunshot injuries. Accordingly, this paper reviews the literature surrounding gunshot injuries caused by ricocheted bullets. In doing so, it discusses the characteristics of ricochet entrance wounds and wound tracks, noting several important considerations for assessment of a possible ricochet incident. The shapes of ricochet entrance wounds vary, ranging from round holes to elliptical, large and irregular shapes. Pseudo-stippling or pseudo-gunpowder tattooing, pseudo-soot blackening and tumbling abrasions seen on the skin surrounding the bullet hole are particularly associated with ricochet incidents...
May 2017: Legal Medicine
https://www.readbyqxmd.com/read/28549182/single-provenance-mature-conifers-show-higher-non-structural-carbohydrate-storage-and-reduced-growth-in-a-drier-location
#3
Frida I Piper, Alex Fajardo, Günter Hoch
Since growth is more sensitive to drought than photosynthesis, trees inhabiting dry regions are expected to exhibit higher carbohydrate storage and less growth than their conspecifics from more humid regions. However, the same pattern can be the result of different genotypes inhabiting contrasting humidity conditions. To test if reduced growth and high carbohydrate storage are environmentally driven by drought, we examined the growth and non-structural carbohydrate (NSC) concentrations in single-provenance stands of mature trees of Pinus contorta Douglas and Pinus ponderosa Douglas ex C...
May 26, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28548242/enhanced-root-growth-in-phosphate-starved-arabidopsis-by-stimulating-de-novo-phospholipid-biosynthesis-through-the-overexpression-of-lysophosphatidic-acid-acyltransferase-2-lpat2
#4
Artik Elisa Angkawijaya, Van Cam Nguyen, Yuki Nakamura
Upon phosphate starvation, plants retard shoot growth but promote root development presumably to enhance phosphate assimilation from the ground. Membrane lipid remodeling is a metabolic adaptation that replaces membrane phospholipids by non-phosphorous galactolipids, thereby allowing plants to obtain scarce phosphate yet maintain the membrane structure. However, stoichiometry of this phospholipid-to-galactolipid conversion may not account for the massive demand of membrane lipids that enables active growth of roots under phosphate starvation, thereby suggesting the involvement of de novo phospholipid biosynthesis, which is not represented in the current model...
May 26, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28547370/integration-of-cerium-chemical-forms-and-subcellular-distribution-to-understand-cerium-tolerance-mechanism-in-the-rice-seedlings
#5
Xue Wang, Dongwu Liu
Rare earth elements (REEs) accumulate in the soil and ecosystem. Cerium (Ce) is one of the main additives in REE-containing fertilizers. However, little information is available on Ce distribution patterns and chemical forms in rice. The subcellular distribution and chemical forms of Ce were investigated in the rice seedlings (Oryza sativa L., cv. Zhonghua 11) exposed to 0, 10, 20, 40, 80, and 160 μM Ce. The elongation of root and shoot was significantly inhibited by 20, 40, 80, and 160 μM Ce. Cerium was significantly accumulated in the cell walls, cell organelles, and soluble fractions of the roots and shoots with the increase of Ce concentrations...
May 25, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28545156/the-boron-transporter-bnac4-bor1-1c-is-critical-for-inflorescence-development-and-fertility-under-boron-limitation-in-brassica-napus
#6
Quan Zhang, Haifei Chen, Mingliang He, Zhuqing Zhao, Hongmei Cai, Guangda Ding, Lei Shi, Fangsen Xu
Boron (B) is an essential micronutrient for plants, but the molecular mechanisms underlying the uptake and distribution of B in allotetraploid rapeseed (Brassica napus) are unclear. Here, we identified a B transporter of rapeseed, BnaC4.BOR1;1c, which expressed in shoot nodes and involved in distributing B to the reproductive organs. Transgenic Arabidopsis plants containing a BnaC4.BOR1;1c promoter-driven GUS reporter gene showed strong GUS activity in roots, nodal regions of the shoots and immature floral buds...
May 25, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28545103/combined-effects-of-cotyledon-excision-and-nursery-fertilization-on-root-growth-nutrient-status-and-outplanting-performance-of-quercus-variabilis-container-seedlings
#7
Wenhui Shi, Mark Bloomberg, Guolei Li, Shuchai Su, Liming Jia
Artificial excision of the distal part of acorns in order to promote germination is well researched in oak seedling cultivation studies. However, studies of combined effects of cotyledon excision and nursery fertilization on container seedlings are lacking, especially for seedling root growth and outplanting performance. This study aimed to explore the main effects of cotyledon excision on Quercus variabilis seedling emergence characteristics and demonstrated the combined effects of cotyledon excision and nursery fertilization on seedling quality to improve Quercus variabilis seedling outplanting performance...
2017: PloS One
https://www.readbyqxmd.com/read/28542296/traders-guns-and-money-the-effects-of-mass-shootings-on-stock-prices-of-firearm-manufacturers-in-the-u-s
#8
Anandasivam Gopal, Brad N Greenwood
We investigate how mass shootings influence the stock price of firearms manufacturers. While it is well known that mass shootings lead to increased firearms sales, the response from financial markets is unclear. On one hand, given the observed short-term increase in demand, firearm stock prices may rise due to the unexpected financial windfall for the firm. On the other, mass shootings may result in calls for regulation of the industry, leading to divestment of firearms stocks in spite of short-term demand...
2017: PloS One
https://www.readbyqxmd.com/read/28542267/discerning-morpho-anatomical-physiological-and-molecular-multiformity-in-cultivated-and-wild-genotypes-of-lentil-with-reconciliation-to-salinity-stress
#9
Dharmendra Singh, Chandan Kumar Singh, Shanti Kumari, Ram Sewak Singh Tomar, Sourabh Karwa, Rajendra Singh, Raja Bahadur Singh, Susheel Kumar Sarkar, Madan Pal
One hundred and sixty two genotypes of different Lens species were screened for salinity tolerance in hydroponics at 40, 80 and 120 mM sodium chloride (NaCl) for 30 d. The germination, seedling growth, biomass accumulation, seedling survivability, salinity scores, root and shoot anatomy, sodium ion (Na+), chloride ion (Cl-) and potassium ion (K+) concentrations, proline and antioxidant activities were measured to evaluate the performance of all the genotypes. The results were compared in respect of physiological (Na+, K+ and Cl-) and seed yield components obtained from field trials for salinity stress conducted during two years...
2017: PloS One
https://www.readbyqxmd.com/read/28539916/endophytic-fungi-piriformospora-indica-mediated-protection-of-host-from-arsenic-toxicity
#10
Shayan Mohd, Jagriti Shukla, Aparna S Kushwaha, Kapil Mandrah, Jai Shankar, Nidhi Arjaria, Prem N Saxena, Ram Narayan, Somendu K Roy, Manoj Kumar
Complex intercellular interaction is a common theme in plant-pathogen/symbiont relationship. Cellular physiology of both the partners is affected by abiotic stress. However, little is known about the degree of protection each offers to the other from different types of environmental stress. Our current study focused on the changes in response to toxic arsenic in the presence of an endophytic fungus Piriformospora indica that colonizes the paddy roots. The primary impact of arsenic was observed in the form of hyper-colonization of fungus in the host root and resulted in the recovery of its overall biomass, root damage, and chlorophyll due to arsenic toxicity...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28537842/-invisible-during-my-own-crisis-responses-of-lgbt-people-of-color-to-the-orlando-shooting
#11
Johanna L Ramirez, Kirsten A Gonzalez, M Paz Galupo
On June 12th, 2016, the Pulse nightclub in Orlando, Florida was the target of one of the country's deadliest mass shootings. Pulse, a gay nightclub, was hosting a Latin Pride Night the evening of the tragedy, resulting in the death of 49 victims and 53 casualties, over 90% of whom were lesbian, gay, bisexual, and transgender (LGBT) Latinx people, specifically. The present research investigates the narrative responses from LGBT people of color (LGBT-POC) following the tragedy. Results included an analysis of 94 participant narrative responses...
May 24, 2017: Journal of Homosexuality
https://www.readbyqxmd.com/read/28537795/the-influences-of-arbuscular-mycorrhizal-fungus-on-phytostabilization-of-lead-zinc-tailings-using-four-plant-species
#12
Hai-Hong Gu, Zheng Zhou, Yu-Qian Gao, Xue-Tao Yuan, Yan-Jun Ai, Jun-Ying Zhang, Wen-Zhe Zuo, Alicia A Taylor, Shi-Qing Nan, Fu-Ping Li
A greenhouse experiment was conducted to investigate the effects of the arbuscular mycorrhizal fungus Funneliformis mosseae on three parameters: Pb, Zn, Cu and Cd accumulation, translocation and plant growth in perennial ryegrass (Lolium perenne), tall fescue (Festuca arundinacea), showy stonecrop (Hylotelephium spectabile) and Purple Heart (Tradescantia pallida). The purpose of this work is to enhance site-specific phytostabilization of lead/zinc mine tailings using native plant species. The results showed that mycorrhizal fungi inoculation significantly increased plant biomass of F...
August 3, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28537029/arsenic-accumulation-and-physiological-attributes-of-spinach-in-the-presence-of-amendments-an-implication-to-reduce-health-risk
#13
Muhammad Shahid, Marina Rafiq, Nabeel Khan Niazi, Camille Dumat, Saliha Shamshad, Sana Khalid, Irshad Bibi
The current study examined the effect of calcium (Ca) and ethylenediaminetetraacetic acid (EDTA) on arsenic (As) uptake and toxicity to spinach (Spinacia oleracea) as well as assessed the potential human health risks. Spinach seedlings were exposed to three levels of As (25, 125, and 250 μM) alone or together with three levels of EDTA (25, 125, and 250 μM) and Ca (1, 5, and 10 mM). The effect of EDTA and Ca was assessed in terms of As contents in roots and shoots, hydrogen peroxide production, chlorophyll contents, and lipid peroxidation...
May 24, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28536586/ancestral-qtl-alleles-from-wild-emmer-wheat-enhance-root-development-under-drought-in-modern-wheat
#14
Lianne Merchuk-Ovnat, Tzion Fahima, Jhonathan E Ephrath, Tamar Krugman, Yehoshua Saranga
A near-isogenic line (NIL-7A-B-2), introgressed with a quantitative trait locus (QTL) on chromosome 7AS from wild emmer wheat (Triticum turgidum ssp. dicoccoides) into the background of bread wheat (T. aestivum L.) cv. BarNir, was recently developed and studied in our lab. NIL-7A-B-2 exhibited better productivity and photosynthetic capacity than its recurrent parent across a range of environments. Here we tested the hypothesis that root-system modifications play a major role in NIL-7A-B-2's agronomical superiority...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28536581/optimization-of-nitrogen-rate-and-planting-density-for-improving-yield-nitrogen-use-efficiency-and-lodging-resistance-in-oilseed-rape
#15
Shahbaz Khan, Sumera Anwar, Jie Kuai, Sana Ullah, Shah Fahad, Guangsheng Zhou
Yield and lodging related traits are essential for improving rapeseed production. The objective of the present study was to investigate the influence of plant density (D) and nitrogen (N) rates on morphological and physiological traits related to yield and lodging in rapeseed. We evaluated Huayouza 9 for two consecutive growing seasons (2014-2016) under three plant densities (LD, 10 plants m(-2); MD, 30 plants m(-2); HD, 60 plants m(-2)) and four N rates (0, 60, 120, and 180 kg ha(-1)). Experiment was laid out in split plot design using density as a main factor and N as sub-plot factor with three replications each...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28536482/nad-loss-a-new-player-in-ahr-biology-prevention-of-thymus-atrophy-and-hepatosteatosis-by-nad-repletion
#16
Silvia Diani-Moore, Jenny Shoots, Rubi Singh, Joshua B Zuk, Arleen B Rifkind
Dioxin (2,3,7,8-tetrachlorodibenzo-p-dioxin, TCDD) is a carcinogenic and highly toxic industrial byproduct that persists in the environment and produces a pleiotropic toxicity syndrome across vertebrate species that includes wasting, hepatosteatosis, and thymus atrophy. Dioxin toxicities require binding and activation of the aryl hydrocarbon receptor (AhR), a ligand activated transcription factor. However, after nearly 50 years of study, it remains unknown how AhR activation by dioxin produces toxic effects...
May 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28536099/repression-of-mir156-by-mir159-regulates-the-timing-of-the-juvenile-to-adult-transition-in-arabidopsis
#17
Changkui Guo, Yunmin Xu, Min Shi, Yongmin Lai, Xi Wu, Huasen Wang, Zhujun Zhu, R Scott Poethig, Gang Wu
Temporally-regulated miRNAs have been identified as master regulators of developmental timing in both animals and plants. In plants, vegetative development is regulated by a temporal decrease in miR156 level, but how this decreased expression is initiated and then maintained during shoot development remains elusive. Here we show that miR159 is required for the correct timing of vegetative development in Arabidopsis thaliana. Loss of miR159 increases miR156 level throughout shoot development and delays vegetative development, whereas overexpression of miR159 slightly accelerated vegetative development...
May 23, 2017: Plant Cell
https://www.readbyqxmd.com/read/28535150/a-new-scenario-for-gravity-detection-in-plants-the-position-sensor-hypothesis
#18
O Pouliquen, Y Forterre, A Bérut, H Chauvet, F Bizet, V Legué, B Moulia
The detection of gravity plays a fundamental role during the growth and evolution of plants. Although progress has been made in our understanding of the molecular, cellular and physical mechanisms involved in the gravity detection, a coherent scenario consistent with all the observations is still lacking. In this special issue article, we discuss recent experiments showing that the response to inclination of shoots is independent of the gravity intensity, meaning that the gravity sensor detects an inclination and not a force...
May 23, 2017: Physical Biology
https://www.readbyqxmd.com/read/28534307/acanthus-ilicifolius-l-a-promising-candidate-for-phytostabilization-of-zinc
#19
A M Shackira, Jos T Puthur, E Nabeesa Salim
The potential of a halophyte species-Acanthus ilicifolius L.-to phytostabilize zinc (Zn) grown under hydroponics culture conditions was critically evaluated in this study. The propagules after treating with ZnSO4 (4 mM) were analysed for the bioaccumulation pattern, translocation rate of Zn to the shoot, effects of Zn accumulation on organic solutes and the antioxidant defence system. It was found that most of the Zn absorbed by the plant was retained in the root (47%) and only a small portion was transported to stem (12%) and leaves (11%)...
June 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28534059/cryo-mesh-a-simple-alternative-cryopreservation-protocol
#20
B Funnekotter, E Bunn, R L Mancera
BACKGROUND: The continued development of new cryopreservation protocols has improved post-cryogenic success rates for a wide variety of plant species. Methods like the cryo-plate have proven beneficial in simplifying the cryopreservation procedure. OBJECTIVE: This study assessed the practicality of a stainless steel mesh strip (cryo-mesh) for cryopreserving shoot tips from Anigozanthos viridis. MATERIALS AND METHODS: Shoot tips of A. viridis (Kangaroo Paw) were precultured on 0...
March 2017: Cryo Letters
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