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https://www.readbyqxmd.com/read/29160894/chlorogenic-acids-and-the-acyl-quinic-acids-discovery-biosynthesis-bioavailability-and-bioactivity
#1
REVIEW
Michael N Clifford, Indu B Jaganath, Iziar A Ludwig, Alan Crozier
Covering: 2000 up to late 2017This review is focussed upon the acyl-quinic acids, the most studied group within the ca. 400 chlorogenic acids so far reported. The acyl-quinic acids, the first of which was characterised in 1846, are a diverse group of plant-derived compounds produced principally through esterification of an hydroxycinnamic acid and 1l-(-)-quinic acid. Topics addressed in this review include the confusing nomenclature, quantification and characterisation by NMR and MS, biosynthesis and role in planta, and the occurrence of acyl-quinic acids in coffee, their transformation during roasting and delivery to the beverage...
November 21, 2017: Natural Product Reports
https://www.readbyqxmd.com/read/29160562/aqueous-extract-of-yellow-maca-lepidium-meyenii-improves-sperm-count-in-experimental-animals-but-response-depends-on-hypocotyl-size-ph-and-routes-of-administration
#2
L Sanchez-Salazar, G F Gonzales
Lepidium meyenii, a Peruvian plant growing over 4000 m.a.s.l., has effects on nutrition and fertility. The purpose of this study was to evaluate the sperm count in 105 male mice receiving boiled aqueous extract of yellow maca hypocotyls from different sizes, under different pH conditions and using two different routes of administration. Five mice per group were treated daily for 3 days with vehicle (oral and intraperitoneal) or maca aqueous extracts (5 mg/0.5 ml/day) belonging to the first, second, third and fourth categories, according to their hypocotyl size...
November 21, 2017: Andrologia
https://www.readbyqxmd.com/read/29159454/phosphorus-transformations-in-plant-based-and-bio-waste-materials-induced-by-pyrolysis
#3
James Stephen Robinson, Karen Baumann, Yongfeng Hu, Philipp Hagemann, Lutz Kebelmann, Peter Leinweber
Strategies are needed to increase the sustainability of phosphorus (P) fertiliser management in agriculture. This paper reports on the potential of pyrolysis treatment to recycle P from renewable materials previously regarded as wastes. The study used K-edge X-ray absorption near-edge structure (XANES) spectroscopy to examine chemical forms of P in the waste feedstock materials and corresponding biochars (pyrolysis at 480-500 °C) of four ligno-cellulosic, plant-based residues and five relatively P-rich livestock and water-treatment by-products, to acquire information on changes in potential P fertiliser value...
November 20, 2017: Ambio
https://www.readbyqxmd.com/read/29159453/performance-of-secondary-p-fertilizers-in-pot-experiments-analyzed-by-phosphorus-x-ray-absorption-near-edge-structure-xanes-spectroscopy
#4
Christian Vogel, Camille Rivard, Verena Wilken, Andreas Muskolus, Christian Adam
A pot experiment was carried out with maize to determine the phosphorus (P) plant-availability of different secondary P-fertilizers derived from wastewater. We analyzed the respective soils by P K-edge X-ray absorption near-edge structure (XANES) spectroscopy to determine the P chemical forms that were present and determine the transformation processes. Macro- and micro-XANES spectroscopy were used to determine the chemical state of the overall soil P and identify P compounds in P-rich spots. Mainly organic P and/or P adsorbed on organic matter or other substrates were detected in unfertilized and fertilized soils...
November 20, 2017: Ambio
https://www.readbyqxmd.com/read/29158640/a-sucrose-non-fermenting-1-related-protein-kinase-1-gene-from-potato-stsnrk1-regulates-carbohydrate-metabolism-in-transgenic-tobacco
#5
Feibing Wang, Yuxiu Ye, Xinhong Chen, Jizhong Wang, Zhiyuan Chen, Qing Zhou
Sucrose non-fermenting-1-related protein kinase 1 (SnRK1) has been shown to play an essential role in regulating saccharide metabolism and starch biosynthesis of plant. The regulatory role of StSnRK1 from potato in regulating carbohydrate metabolism and starch accumulation has not been investigated. In this work, a cDNA encoding the SnRK1 protein, named StSnRK1, was isolated from potato. The open reading frame contained 1545 nucleotides encoding 514 amino acids. Subcellular localization analysis in onion epidermal cells indicated that StSnRK1 protein was localized to the nucleus...
October 2017: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/29158634/aluminum-exclusion-from-root-zone-and-maintenance-of-nutrient-uptake-are-principal-mechanisms-of-al-tolerance-in-pisum-sativum-l
#6
Natalia E Kichigina, Jan V Puhalsky, Aleksander I Shaposhnikov, Tatiana S Azarova, Natalia M Makarova, Svyatoslav I Loskutov, Vera I Safronova, Igor A Tikhonovich, Margarita A Vishnyakova, Elena V Semenova, Irina A Kosareva, Andrey A Belimov
Our study aimed to evaluate intraspecific variability of pea (Pisum sativum L.) in Al tolerance and to reveal mechanisms underlying genotypic differences in this trait. At the first stage, 106 pea genotypes were screened for Al tolerance using root re-elongation assay based on staining with eriochrome cyanine R. The root re-elongation zone varied from 0.5 mm to 14 mm and relationships between Al tolerance and provenance or phenotypic traits of genotypes were found. Tolerance index (TI), calculated as a biomass ratio of Al-treated and non-treated contrasting genotypes grown in hydroponics for 10 days, varied from 30% to 92% for roots and from 38% to 90% for shoots...
October 2017: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/29158629/overexpression-of-lhsornpr1-a-npr1-like-gene-from-the-oriental-hybrid-lily-sorbonne-conferred-enhanced-resistance-to-pseudomonas-syringae-pv-tomato-dc3000-in-arabidopsis
#7
Le Wang, Zhihong Guo, Yubao Zhang, Yajun Wang, Guo Yang, Liu Yang, Li Wang, Ruoyu Wang, Zhongkui Xie
The non-expressor of the pathogenesis-related genes 1 (NPR1) is a master regulator in defense signaling of plants and plays a key role in basal and systemic acquired resistance. In this study, we isolated a NPR1-like gene from the oriental hybrid lily 'Sorbonne' (designated as LhSorNPR1) using rapid amplification of cDNA ends (RACE). The open reading frame of LhSorNPR1 consisted of 1854 bp, encoding a protein of 617 amino acids. Multiple sequence alignment revealed that LhSorNPR1 shares high similarity to NPR1-like proteins and characteristics of the BTB/POZ domain and ankyrin repeats...
October 2017: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/29158537/medicinal-plant-leaf-extract-and-pure-flavonoid-mediated-green-synthesis-of-silver-nanoparticles-and-their-enhanced-antibacterial-property
#8
Siddhant Jain, Mohan Singh Mehata
The rewards of using plants and plant metabolites over other biological methods for nanoparticle synthesis have fascinated researchers to investigate mechanisms of metal ions uptake and bio-reduction by plants. Here, green chemistry were employed for the synthesis of silver nanoparticles (AgNPs) using leaf extracts of Ocimum Sanctum (Tulsi) and its derivative quercetin (flavonoid present in Tulsi) separately as precursors to investigate the role of biomolecules present in Tulsi in the formation of AgNPs from cationic silver under different physicochemical conditions such as pH, temperature, reaction time and reactants concentration...
November 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29158240/novel-genes-and-regulators-that-influence-production-of-cell-surface-exopolysaccharides-in-sinorhizobium-meliloti
#9
Melanie J Barnett, Sharon R Long
Sinorhizobium meliloti is a soil-dwelling α-proteobacterium that engages in a nitrogen-fixing root nodule symbiosis with leguminous plants. Cell surface polysaccharides are important for both adapting to stresses in the soil and development of an effective symbiotic interaction. Among the polysaccharides characterized to date, the acidic exopolysaccharides EPS-I (succinoglycan) and EPS-II (galactoglucan) are particularly important for protection from abiotic stresses, biofilm formation, root colonization, and infection of plant roots...
November 20, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/29157472/nuclear-magnetic-resonance-characterization-of-traditional-homeopathically-manufactured-copper-cuprum-metallicum-and-plant-gelsemium-sempervirens-medicines-and-controls
#10
Michel Van Wassenhoven, Martine Goyens, Marc Henry, Etienne Capieaux, Philippe Devos
BACKGROUND: NMR proton relaxation is sensitive to the dynamics of the water molecule H2O, through the interaction of the spin of the proton ((1)H) with external magnetic and electromagnetic fields. METHODS: We measured dilution and potentization processes through measurements of (1)H spin-lattice T1 and spin-spin T2 relaxation times. In order to interpret the recorded fluctuations in T1- or T2-values, experimental data were linearized by investigating how the area under a fluctuating time = f(dilution) curve (dilution integral or DI) changes with dilution...
November 2017: Homeopathy: the Journal of the Faculty of Homeopathy
https://www.readbyqxmd.com/read/29156395/validation-of-a-multi-phase-plant-wide-model-for-the-description-of-the-aeration-process-in-a-wwtp
#11
I Lizarralde, T Fernández-Arévalo, S Beltrán, E Ayesa, P Grau
This paper introduces a new mathematical model built under the PC-PWM methodology to describe the aeration process in a full-scale WWTP. This methodology enables a systematic and rigorous incorporation of chemical and physico-chemical transformations into biochemical process models, particularly for the description of liquid-gas transfer to describe the aeration process. The mathematical model constructed is able to reproduce biological COD and nitrogen removal, liquid-gas transfer and chemical reactions. The capability of the model to describe the liquid-gas mass transfer has been tested by comparing simulated and experimental results in a full-scale WWTP...
October 30, 2017: Water Research
https://www.readbyqxmd.com/read/29156276/formation-and-degradation-of-n-oxide-venlafaxine-during-ozonation-and-biological-post-treatment
#12
Ines Zucker, Hadas Mamane, Alon Riani, Igal Gozlan, Dror Avisar
While ozonation is considered an efficient treatment to eliminate trace organic compounds (TrOCs) from secondary wastewater effluents, the presence and persistence of transformation products (TPs) resulting from ozonation of TrOCs is a major concern that should be assessed prior to effluent discharge to the environment. Venlafaxine (VLX), an environmentally relevant tertiary amine-containing TrOC, was chosen as the model for this study. TP analysis confirmed that the lone electron pair of the non-protonated amine are the predominant site of oxidant attack, and therefore strongly affected by pH value and VLX speciation...
November 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29156265/occurrence-and-fate-of-most-prescribed-antibiotics-in-different-water-environments-of-tehran-iran
#13
Roya Mirzaei, Masud Yunesian, Simin Nasseri, Mitra Gholami, Esfandiyar Jalilzadeh, Shahram Shoeibi, Alireza Mesdaghinia
The presence of most prescribed antibiotic compounds from four therapeutic classes (β-lactam, cephalosporins, macrolides, fluoroquinolones) were studied at two full-scale WWTPs, two rivers, thirteen groundwater resources, and five water treatment plants in Tehran. Analytical methodology was based on high performance liquid chromatography/tandem mass spectrometry after solid-phase extraction. Samples were collected at 33 sample locations on three sampling periods over four months from June to August 2016. None of the target antibiotics were detected in groundwater resources and water treatment plants, while seven out of nine target antibiotics were analyzed in two studied river waters as well as the influent and effluent of wastewater treatment plants at concentrations ranging from <LOQ to 926...
November 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29156259/biochar-and-nitrate-reduce-risk-of-methylmercury-in-soils-under-straw-amendment
#14
Yue Zhang, Yu-Rong Liu, Pei Lei, Yong-Jie Wang, Huan Zhong
There is growing evidence that incorporating crop straw into soils, which is being widely encouraged in many parts of the world, could increase net methylmercury (MeHg) production in soils and MeHg accumulation in crops. We explored the possibility of mitigating the risk of increased MeHg levels under straw amendment by transforming straw into biochar (BC). Greenhouse and batch experiments were conducted, in which soil MeHg concentrations, MeHg phytoavailability and accumulation in rice, dynamics of sulfate, nitrate and abundances of sulfate reducing bacteria (SRB) were compared in 'Control' (Hg contaminated soil), 'Straw' (soil with 1% rice straw), 'Straw+BC' (soil with 1% straw and 1% biochar), and 'Straw+BC+N' (soil with 1% straw, 1% biochar and 0...
November 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29154152/a-mathematical-model-to-plan-for-long-term-effects-of-water-conservation-choices-on-dry-weather-wastewater-flows-and-concentrations
#15
Lauren M Cook, Constantine Samaras, Jeanne M VanBriesen
In many cities, sewer systems are experiencing conditions that are significantly different from those for which they were designed. Factors such as water conservation efforts, changes in population, and efforts to reduce infiltration are altering the quantity and quality of sewage. These changes may affect the ability of sewers to maintain self-cleansing velocities, which are crucial to avoiding solids settling and corrosion issues. Further, such changes may alter the timeline for expected wastewater plant expansion...
November 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29153474/impacts-of-environmental-factors-on-the-whole-microbial-communities-in-the-rhizosphere-of-a-metal-tolerant-plant-elsholtzia-haichowensis-sun
#16
Songqiang Deng, Tan Ke, Longtai Li, Shenwen Cai, Yuyue Zhou, Yue Liu, Limin Guo, Lanzhou Chen, Dayi Zhang
Rhizospheric microbes play important roles in plant growth and heavy metals (HMs) transformation, possessing great potential for the successful phytoremediation of environmental pollutants. In the present study, the rhizosphere of Elsholtzia haichowensis Sun was comprehensively studied to uncover the influence of environmental factors (EFs) on the whole microbial communities including bacteria, fungi and archaea, via quantitative polymerase chain reaction (qPCR) and high-throughput sequencing. By analyzing molecular ecological network and multivariate regression trees (MRT), we evaluated the distinct impacts of 37 EFs on soil microbial community...
November 15, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29153405/describing-genomic-and-epigenomic-traits-underpinning-emerging-fungal-pathogens
#17
Rhys A Farrer, Matthew C Fisher
An unprecedented number of pathogenic fungi are emerging and causing disease in animals and plants, putting the resilience of wild and managed ecosystems in jeopardy. While the past decades have seen an increase in the number of pathogenic fungi, they have also seen the birth of new big data technologies and analytical approaches to tackle these emerging pathogens. We review how the linked fields of genomics and epigenomics are transforming our ability to address the challenge of emerging fungal pathogens. We explore the methodologies and bioinformatic toolkits that currently exist to rapidly analyze the genomes of unknown fungi, then discuss how these data can be used to address key questions that shed light on their epidemiology...
2017: Advances in Genetics
https://www.readbyqxmd.com/read/29153257/pseudomonas-silesiensis-sp-nov-strain-a3-t-isolated-from-a-biological-pesticide-sewage-treatment-plant-and-analysis-of-the-complete-genome-sequence
#18
Michał A Kaminski, Ewa M Furmanczyk, Adam Sobczak, Andrzej Dziembowski, Leszek Lipinski
Microorganisms classified in to the Pseudomonas genus are a ubiquitous bacteria inhabiting variety of environmental niches and have been isolated from soil, sediment, water and different parts of higher organisms (plants and animals). Members of this genus are known for their metabolic versatility and are able to utilize different chemical compounds as a source of carbon, nitrogen or phosphorus, which makes them an interesting microorganism for bioremediation or bio-transformation. Moreover, Pseudomonas sp...
November 3, 2017: Systematic and Applied Microbiology
https://www.readbyqxmd.com/read/29153071/-mycoviruses-and-importance-in-mycology
#19
Sema Aşkın Keçeli
Opportunistic fungal infections like invasive candidiasis and aspergillozis have high mortality rate particularly in immunosupressive patients. The rate of therapy success with antifungal agents is usually low. Although immunotherapy methods have been developed to increase the host response against antifungals, there has been a need for new antifungal therapeutic agents in the treatment of invasive aspergillozis and other opportunistic fungal infections. Mycoviruses are the viruses that specifically infect fungi...
October 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/29150319/analytical-design-of-an-industrial-two-term-controller-for-optimal-regulatory-control-of-open-loop-unstable-processes-under-operational-constraints
#20
Rodrigue Tchamna, Moonyong Lee
This paper proposes a novel optimization-based approach for the design of an industrial two-term proportional-integral (PI) controller for the optimal regulatory control of unstable processes subjected to three common operational constraints related to the process variable, manipulated variable and its rate of change. To derive analytical design relations, the constrained optimal control problem in the time domain was transformed into an unconstrained optimization problem in a new parameter space via an effective parameterization...
November 14, 2017: ISA Transactions
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