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https://www.readbyqxmd.com/read/29775970/anti-inflammatory-flavanones-and-flavanols-from-the-roots-of-pongamia-pinnata
#1
Ran Wen, Haining Lv, Yong Jiang, Pengfei Tu
A phytochemical study of the roots of Pongamia pinnata afforded 29 flavanones and flavanols, including 7 previously undescribed compounds. The structures of the isolated compounds were determined by 1D and 2D NMR and mass spectroscopy data. The absolute configurations of the compounds were assigned via analysis of the specific rotations and electronic circular dichroism spectra, application of Mosher's method, and by comparing the calculated and experimental electronic circular dichroism spectra. The isolates were evaluated for their inhibitory effects on nitric oxide production in lipopolysaccharide-stimulated BV-2 microglial cells...
May 18, 2018: Planta Medica
https://www.readbyqxmd.com/read/29775964/time-matters-for-intersex-bodies-between-socio-medical-time-and-somatic-time
#2
Limor Meoded Danon
This article focuses on the dynamic relationships between time and intersex bodies that exist, on the one hand, in medical policy on intersex bodies and, on the other, in intersex people's subjective experiences. Time, from a sociological perspective, is a biosocial agent that establishes diagnostic practices, regulations, and treatment policy regarding intersex bodies. The systematic construction of timeframes by biomedical professionals aims to rapidly diagnose and treat intersex patients and is deeply rooted in the "dimorphic soma-gender order" (DMSGO), the imagined unified relationship of female bodies to femininity and male bodies to masculinity...
May 8, 2018: Social Science & Medicine
https://www.readbyqxmd.com/read/29775934/arsenic-speciation-dynamics-in-paddy-rice-soil-water-environment-sources-physico-chemical-and-biological-factors-a-review
#3
REVIEW
Prasanna Kumarathilaka, Saman Seneweera, Andrew Meharg, Jochen Bundschuh
Rice is the main staple carbohydrate source for billions of people worldwide. Natural geogenic and anthropogenic sources has led to high arsenic (As) concentrations in rice grains. This is because As is highly bioavailable to rice roots under conditions in which rice is cultivated. A multifaceted and interdisciplinary understanding, both of short-term and long-term effects, are required to identify spatial and temporal changes in As contamination levels in paddy soil-water systems. During flooding, soil pore waters are elevated in inorganic As compared to dryland cultivation systems, as anaerobism results in poorly mobile As(V), being reduced to highly mobile As(III)...
April 21, 2018: Water Research
https://www.readbyqxmd.com/read/29775927/effects-of-microcystin-lr-on-the-tissue-growth-and-physiological-responses-of-the-aquatic-plant-iris-pseudacorus-l
#4
Naiyu Wang, Can Wang
The release of cyanobacterial toxins during algal bloom has adverse effects on aquatic plants and animals. This study aimed to understand the toxic effects and mechanism of microcystin-LR (MC-LR) on the seedling growth and physiological responses of Iris pseudacorus L. (calamus). After a one-month exposure experiment, the growth and development of the calamus leaves were significantly inhibited, and this inhibitory effect was verified to be concentration dependent. Furthermore, the cell membrane system was damaged, and the photosynthesis was also adversely affected by MC-LR...
April 27, 2018: Aquatic Toxicology
https://www.readbyqxmd.com/read/29775866/identification-of-udp-glucosyltransferases-from-the-aluminum-resistant-tree-eucalyptus-camaldulensis-forming-%C3%AE-glucogallin-the-precursor-of-hydrolyzable-tannins
#5
Ko Tahara, Mitsuru Nishiguchi, Andrej Frolov, Juliane Mittasch, Carsten Milkowski
In the highly aluminum-resistant tree Eucalyptus camaldulensis, hydrolyzable tannins are proposed to play a role in internal detoxification of aluminum, which is a major factor inhibiting plant growth on acid soils. To understand and modulate the molecular mechanisms of aluminum detoxification by hydrolyzable tannins, the biosynthetic genes need to be identified. In this study, we identified and characterized genes encoding UDP-glucose:gallate glucosyltransferase, which catalyzes the formation of 1-O-galloyl-β-d-glucose (β-glucogallin), the precursor of hydrolyzable tannins...
May 15, 2018: Phytochemistry
https://www.readbyqxmd.com/read/29775864/exogenous-hydrogen-peroxide-inhibits-primary-root-gravitropism-by-regulating-auxin-distribution-during-arabidopsis-seed-germination
#6
Lina Zhou, Hongzhou Hou, Tao Yang, Yuke Lian, Yan Sun, Zhiyuan Bian, Chongying Wang
Hydrogen peroxide (H2 O2 ) is the key factor in many physiological and metabolic processes in plants. During seed germination, exogenous H2 O2 application influences gravitropism and induces curvature of the primary root in grass pea and pea seedlings. However, it remains unclear whether and how this happens in the model plant Arabidopsis thaliana. In the present study, the effect of exogenous H2 O2 on the gravitropic response of primary roots during Arabidopsis seed germination was studied using histology and molecular biology approaches...
May 15, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29775862/identification-and-functional-characterization-of-a-max2-ortholog-from-switchgrass-panicum-virgatum-l
#7
Tingting Cheng, Donghua Wang, Yongfeng Wang, Shumeng Zhang, Chao Zhang, Shudong Liu, Yajun Xi, Fengli Sun
Switchgrass (Panicum virgatum L.) is a sustainable cellulosic energy crop with high biomass yield on marginal soils. Tillering, an important agronomic characteristic related to biomass production in gramineous plants, is regulated by complex interacting factors, such as plant hormones. Strigolactones (SLs) comprise a novel class of plant hormones that inhibit shoot branching. The MORE AXILLARY GROWTH2 (MAX2)/DWARF 3 (D3)/RAMOSUS (RMS4) genes encode proteins involved in the SL signaling pathway in various plants...
May 15, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29775860/a-cone-beam-computed-tomography-study-of-the-mesial-cervical-concavity-of-maxillary-first-premolars
#8
Linfeng Fan, Keyong Yuan, Chenguang Niu, Rui Ma, Zhengwei Huang
OBJECTIVE: To investigate the mesial cervical concavity of maxillary first premolars and its relationship with root and canal configuration using cone-beam computed tomography (CBCT). DESIGN: Images of maxillary first premolars (n = 1056) were collected from patients (n = 601) who had undergonein vivo CBCT scanning. The root and canal number and morphology were evaluated. The following measurements of the mesial cervical concavity of the maxillary first premolars were evaluated in section images: dentine thickness (in concavity at the cemento-enamel junction), concavity angle, depression depth (distance from mesial dentinal surface at concavity to mesial proximity), concavity position (distance from mesial dentinal wall at invagination to the top of the mesial marginal ridge)...
May 7, 2018: Archives of Oral Biology
https://www.readbyqxmd.com/read/29775849/development-and-validation-of-the-chinese-version-of-the-adult-epilepsy-self-management-scale-c-esms-in-western-china
#9
Xiaoqiang Xiao, Yang Si, Qianning Mo, Yao Liu, Cong Li, Jialing Zhao, Shuai Ma, Lili Si, Zhijie Xi, Lang Chen, Dongmei Wu, Qin He, Meiling Hu, Chenqi Zhang, Hongbin Sun
PURPOSE: To develop and validate the Epilepsy Self-Management Scale (ESMS) for Chinese persons with epilepsy (PWE). METHODS: On the basis of ESMS, the standard translation procedure was used to set up the Chinese version of the ESMS (C-ESMS). A consecutive cohort of PWE admitted in Sichuan Provincial People's Hospital were recruited randomly from May 2017 to December 2017 and required to complete the C-ESMS. Project analysis was employed to test the homogeneity of each dimension...
May 2, 2018: Epilepsy Research
https://www.readbyqxmd.com/read/29775821/vermiremediation-of-metal-loid-s-via-eichornia-crassipes-phytomass-extraction-a-sustainable-technique-for-plant-amelioration
#10
Arnab Majumdar, Anil Barla, Munish Kumar Upadhyay, Dibyarpita Ghosh, Punarbasu Chaudhuri, Sudhakar Srivastava, Sutapa Bose
Eichhornia crassipes (water hyacinth), imparts deficiency of soluble arsenic and other toxic metal (loid)s through rhizofiltration and phytoaccumulation. Without proper management strategy, this phytoremediation of metal (loid)s might fail and get reverted back to the environment, contaminating the nearby water bodies. This study, focused on bio-conversion of phytoremediating hyacinths, spiked with 100 times and greater arsenic, lead and cadmium concentrations than the average water contamination, ranging in 58...
May 15, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29775605/outcomes-of-planned-2-stage-hybrid-aortic-repair-with-dacron-replaced-proximal-landing-zone
#11
David N Ranney, Babatunde A Yerokun, Ehsan Benrashid, Muath Bishawi, Adam Williams, Richard L McCann, G Chad Hughes
BACKGROUND: Results of hybrid arch repair (HAR) utilizing native zone 0 proximal landing zone (PLZ) have been unsatisfactory in many series, especially in the setting of ascending aortic dilation (>4.0 cm). This study reports early and late outcomes of planned 2-stage HAR with open 1st stage proximal aortic replacement (PAR) followed by 2nd stage thoracic endovascular aortic repair (TEVAR) with PLZ within the Dacron replaced zone 0. METHODS: N=34 patients underwent planned 2-stage HAR between 1/2006-8/2017...
May 15, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29775494/osa-mir164a-targets-osnac60-and-negatively-regulates-rice-immunity-against-the-blast-fungus-magnaporthe-oryzae
#12
Zhaoyun Wang, Yeqiang Xia, Siyuan Lin, Yanru Wang, Baohuan Guo, Xiaoning Song, Shaochen Ding, Liyu Zheng, Ruiying Feng, Shulin Chen, Yalin Bao, Cong Sheng, Xin Zhang, Jianguo Wu, Dongdong Niu, Hailing Jin, Hongwei Zhao
Exploring the regulatory mechanism played by endogenous rice miRNAs in defense responses against the blast disease is of great significance in both resistant variety breeding and disease control management. We identified rice defense-related miRNAs by comparing rice miRNA expression patterns before and after Magnaporthe oryzae strain Guy11 infection. We discovered that osa-miR164a expression reduced upon Guy11 infection at both early and late stages, which was perfectly associated with the induced expression of its target gene, OsNAC60...
May 18, 2018: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/29775487/a-fiber-optic-pipeline-lets-the-root-circadian-clock-see-the-light
#13
C Robertson McClung
No abstract text is available yet for this article.
May 18, 2018: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29775308/piperidine-alkaloids-with-diverse-skeletons-from-anacyclus-pyrethrum
#14
Qi-Bin Chen, Jie Gao, Guo-An Zou, Xue-Lei Xin, Haji Akber Aisa
Fifteen new piperidine derivatives, pyracyclumines A-J (1-10), including five pairs of enantiomers, (+)-1/(-)-1 to (+)-5/(-)-5, together with three known compounds, agrocybenine (11), 4,6,6-trimethyl-5,6-dihydro-2(1 H)-pyridone (12), and 3,5,5-trimethyl-1,5-dihydro-2 H-pyrrol-2-one (13), were isolated from the roots of Anacyclus pyrethrum. Pyracyclumines A, B, and H (1, 2, and 8) possess a novel 6/5/6/6 dimeric piperidine skeleton, a unique 6/5/6 dimeric piperidine skeleton, and a 1,4,6-triazaindan skeleton, respectively...
May 18, 2018: Journal of Natural Products
https://www.readbyqxmd.com/read/29775106/comparison-of-boron-uptake-and-translocation-in-two-vetiver-genotypes-and-evaluation-of-boron-removal-efficiency-of-vetiver-floating-islands
#15
Junliang Xin, Baifei Huang
The objectives of this study were to identify genotypic differences in the uptake and translocation of boron (B) in vetiver (Chrysopogon zizanioides L.), a promising species in B phytoremediation, and to determine the efficiency of vetiver floating island system in B phytoremediation. Changes in plant biomass and B uptake and translocation were determined in two vetiver genotypes, Sierra and Sunshine, cultured hydroponically in a nutrient solution and exposed to six different B concentrations for 7 d and 14 d...
July 3, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29775105/phytostabilization-of-polymetallic-contaminated-soil-using-medicago-sativa-l-in-combination-with-powdered-marble-sustainable-rehabilitation
#16
Laila Midhat, Naaila Ouazzani, Abdessamed Hejjaj, Javier Bayo, Laila Mandi
This study uses an ecotoxicology approach to evaluate the effectiveness of combining powdered marble as an amendment, with phytostabilization by Medicago sativa L. on the neutralization of acidic mine tailings, and the stabilization of heavy metals. The mine tailings were collected from an abandoned polymetallic mine in Southern Morocco, and mixed with powdered marble as the following proportions, 25%, 50%, and 75%. Laboratory immobilization/stabilization tests showed that the application of powdered marble in the treatments led to a significant increase in pH, and significant reductions of Cu, Zn (99%), Pb (98%), and Fe (45%)...
July 3, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29775104/the-ability-of-silybum-marianum-to-phytoremediate-cadmium-and-or-diesel-oil-from-the-soil
#17
Hossein Hammami, Ebrahim Alaie, Seyed Mohammad Mehdi Dastgheib
Phytoremediation is a new ecological and cost-effective technology applied for cleaning heavy metals and total petroleum hydrocarbon contaminated (TPH-contaminated) soils. This study was conducted to evaluate the potential of milk thistle (Silybum marianum) to phytoremediate cadmium (Cd (II)) from contaminated soils. To this end, the investigators applied a completely randomized design with the factorial arrangement and four replications. The results indicated that all the evaluated parameters of S. Marianum, including shoot and root fresh and dry weight, as well as shoot and root Cd, were significantly influenced by Cd (II) concentration and diesel oil (DO)...
July 3, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29775100/phytoremediation-of-btex-and-naphthalene-from-produced-water-spill-sites-using-poaceae
#18
Amanda Rose Shores, Brittany Hethcock, Melinda Laituri
Surface spills of water produced from hydraulic fracturing can expose soil and groundwater to organics such as BTEX and naphthalene (BTEX&N) as well as high concentrations of salt. As an alternative to soil excavation, we evaluated the effectiveness of BTEX&N soil remediation using 2 grasses present in Colorado. Perennial ryegrass and foxtail barley were grown separately in pots in the greenhouse and exposed to salt or a synthesized produced-water slurry containing relevant levels of salt and BTEX&N...
July 3, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29775097/phosphate-solubilizing-bacteria-improve-the-phytoremediation-efficiency-of-wedelia-trilobata-for-cu-contaminated-soil
#19
Maozi Lin, Meifang Jin, Kang Xu, Lingchao He, Dongliang Cheng
In a controlled experiment, we assessed the effect of phosphate-solubilizing bacterium (PSB) on the soil metal (Cu2+ ) phytoremediation by Wedelia trilobata and examined the effect of the interaction of Cu contamination and PSB on the growth of W. trilobata. We also explored the effect of the interaction of Cu contamination and PSB on the soil microflora. The results showed that the removal efficiency of Cu from soil by W. trilobata increased with an increase in the concentration of PSB, and the translocation factors of Cu (i...
July 3, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29775096/silicon-alleviates-arsenic-induced-toxicity-in-wheat-through-vacuolar-sequestration-and-ros-scavenging
#20
Md Monayem Hossain, Most Amena Khatun, Md Najmul Haque, Md Azizul Bari, Md Firoz Alam, Abul Mandal, Ahmad Humayan Kabir
Arsenic (As) is a phytotoxic element causing health hazards. This work investigates whether and how silicon (Si) alleviates As toxicity in wheat. The addition of Si under As-stress significantly improved morphophysiological characteristics, total protein, and membrane stability compared to As-stressed plants, suggesting that Si does have critical roles in As detoxification in wheat. Analysis of arsenate reductase activity and phytosiderophore (PS) release reveals their no involvement in the Si-mediated alleviation of As in wheat...
July 3, 2018: International Journal of Phytoremediation
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