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https://www.readbyqxmd.com/read/28346994/gc-ms-analysis-and-potential-cytotoxic-activity-of-calyptranthes-grandifolia-o-berg-calyptranthes-tricona-d-legrand-and-myrciaria-plinioides-d-legrand-essential-oil-in-raw264-7-and-cho-k1-cells
#1
D Faleiro, S M Immich, F Majolo, L Mayer, E M Ethur, M I Goettert
The search for new bioactive substances derived from natural products is daily growing. Among biologically active products used in therapeutic approaches, essential oils are described with wide range of therapeutic and pharmacological potential. Plants from Myrtaceae family have the presence of essential oils in its composition. Calyptranthes grandifolia, Calyptranthes tricona and Myrciaria plinioides species belong to this family and are used by the local population. However, there are no reports in the literature describing relevant characteristics about the potential and possible activities of these species...
March 22, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28346899/multi-scale-approach-to-euro-atlantic-climatic-cycles-based-on-phenological-time-series-air-temperatures-and-circulation-indexes
#2
Luigi Mariani, Franco Zavatti
The spectral periods in North Atlantic Oscillation (NAO), Atlantic Multidecadal Oscillation (AMO) and El Nino Southern Oscillation (ENSO) were analyzed and has been verified how they imprint a time series of European temperature anomalies (ETA), two European temperature time series and some phenological series (dates of cherry flowering and grapevine harvest). Such work had as reference scenario the linear causal chain MCTP (Macroscale Circulation→Temperature→Phenology of crops) that links oceanic and atmospheric circulation to surface air temperature which in its turn determines the earliness of appearance of phenological phases of plants...
March 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28346818/regulation-of-low-temperature-stress-in-plants-by-micrornas
#3
REVIEW
Swati Megha, Urmila Basu, Nat N V Kav
Low temperature is one of the most common environmental stresses that seriously affects the growth and development of plants. However, plants have the plasticity in their defense mechanisms enabling them to tolerate and, sometimes, even survive adverse environmental conditions. MicroRNAs (miRNAs) are small non-coding RNAs, approximately 19-21 nucleotides in length, and are being increasingly recognized as regulators of gene expression at the post-transcriptional level and have the ability to influence a broad range of biological processes...
March 27, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28346745/emp10-encodes-a-mitochondrial-ppr-protein-that-affects-the-cis-splicing-of-nad2-intron-1-and-seed-development-in-maize
#4
Manjun Cai, L Shuzhen, Feng Sun, Qin Sun, Hailiang Zhao, Xuemei Ren, Yanxin Zhao, Baocai Tan, Zuxin Zhang, Fazhan Qiu
In higher plants, many mitochondrial genes contain group II-type introns that are removed from RNAs by splicing to produce mature transcripts that are then translated into functional proteins. However, the factors involved in the splicing of mitochondrial introns and their biological functions are not well understood in maize. Here, we isolated an empty pericarp 10 (emp10) mutant and identified the underlying gene by map-based cloning. Emp10 encodes a P-type mitochondria-targeted pentatricopeptide repeat (PPR) protein with 10 PPR motifs...
March 27, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28346345/unconventional-transport-routes-of-soluble-and-membrane-proteins-and-their-role-in-developmental-biology
#5
Andrea Pompa, Francesca De Marchis, Maria Teresa Pallotta, Yoselin Benitez-Alfonso, Alexandra Jones, Kerstin Schipper, Kevin Moreau, Viktor Žárský, Gian Pietro Di Sansebastiano, Michele Bellucci
Many proteins and cargoes in eukaryotic cells are secreted through the conventional secretory pathway that brings proteins and membranes from the endoplasmic reticulum to the plasma membrane, passing through various cell compartments, and then the extracellular space. The recent identification of an increasing number of leaderless secreted proteins bypassing the Golgi apparatus unveiled the existence of alternative protein secretion pathways. Moreover, other unconventional routes for secretion of soluble or transmembrane proteins with initial endoplasmic reticulum localization were identified...
March 25, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28345963/accumulation-and-speciation-of-cd-in-avicennia-marina-tissues
#6
Li Jian, Yan Chongling, Du Daolin, Lu Haoliang, Liu Jingchun
Avicennia marina is a high Cd tolerant species in the mangrove wetlands. A hydroponic experiment was carried out to research the accumulation and chemical form distribution of Cd in the tissues of A. marina under different concentration and time of Cd stress. It was found that the concentrations of Cd in plant tissues followed the order of root> stem>leaf. The data suggested that root activity decreased, Cd accumulation ability weakened in roots and the Translocation Factor increased in stems and leaves with the increase of stress time...
March 27, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28345685/-carbon-nanotubes-characteristic-of-the-substance-biological-effects-and-occupational-exposure-levels
#7
REVIEW
Anna Maria Świdwińska-Gajewska, Sławomir Czerczak
Carbon nanotubes (CNTs) are a diverse group of nano-objects in terms of structure, size (length, diameter), shape and characteristics. The growing interest in these structures is due to the increasing number of people working in exposure to CNTs. Occupational exposure to carbon nanotubes may occur in research laboratories, as well as in plants producing CNTs and their nanocomposites. Carbon nanotubes concentration at the emission source may reach 107 particles/cm<sup>3</sup>. These values, however, are considerably reduced after the application of adequate ventilation...
March 24, 2017: Medycyna Pracy
https://www.readbyqxmd.com/read/28345676/bioconversion-of-stilbenes-in-genetically-engineered-root-and-cell-cultures-of-tobacco
#8
Diego Hidalgo, Ascensión Martínez-Márquez, Elisabeth Moyano, Roque Bru-Martínez, Purificación Corchete, Javier Palazon
It is currently possible to transfer a biosynthetic pathway from a plant to another organism. This system has been exploited to transfer the metabolic richness of certain plant species to other plants or even to more simple metabolic organisms such as yeast or bacteria for the production of high added value plant compounds. Another application is to bioconvert substrates into scarcer or biologically more interesting compounds, such as piceatannol and pterostilbene. These two resveratrol-derived stilbenes, which have very promising pharmacological activities, are found in plants only in small amounts...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28345666/members-of-gammaproteobacteria-as-indicator-species-of-healthy-banana-plants-on-fusarium-wilt-infested-fields-in-central-america
#9
Martina Köberl, Miguel Dita, Alfonso Martinuz, Charles Staver, Gabriele Berg
Culminating in the 1950's, bananas, the world's most extensive perennial monoculture, suffered one of the most devastating disease epidemics in history. In Latin America and the Caribbean, Fusarium wilt (FW) caused by the soil-borne fungus Fusarium oxysporum f. sp. cubense (FOC), forced the abandonment of the Gros Michel-based export banana industry. Comparative microbiome analyses performed between healthy and diseased Gros Michel plants on FW-infested farms in Nicaragua and Costa Rica revealed significant shifts in the gammaproteobacterial microbiome...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28345490/challenges-and-complexity-of-functionality-evaluation-of-flavan-3-ol-derivatives
#10
Akiko Saito
Flavan-3-ol derivatives are common plant-derived bioactive compounds. In particular, (-)-epigallocatechin-3-O-gallate shows various moderate biological activities without severe toxicity, and its health-promoting effects have been widely studied because it is a main ingredient in green tea and is commercially available at low cost. Although various biologically active flavan-3-ol derivatives are present as minor constituents in plants as well as in green tea, their biological activities have yet to be revealed, mainly due to their relative unavailability...
March 27, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28345381/comparison-of-fenton-s-reagent-and-adsorption-for-treatment-of-industrial-container-and-drum-cleaning-industry-wastewater
#11
Elçin Güneş, Deniz İzlen Çifçi, Suna Özden Çelik
The present study is aimed to explore the characterization of Industrial Container and Drum Cleaning (ICDC) industry wastewater and treatment alternatives of this wastewater using Fenton and adsorption processes. Wastewater derived from ICDC industry is usually treated by chemical coagulation and biological treatment in Turkey and then discharged in a centralized wastewater treatment facility. It is required that the wastewater COD is below 1500 mg/L to treat in a centralized wastewater treatment facility The wastewater samples characterized for parameters of pH, conductivity, COD, BOD5, TSS, NH3-N, TN, TOC, TP, Cd, Cr, Cu, Fe, Ni, Pb, Zn, Hg...
March 27, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28345193/retention-of-gene-diversity-during-the-spread-of-a-non-native-plant-species
#12
Katrien Vandepitte, Kenny Helsen, Kasper Van Acker, Joachim Mergeay, Olivier Honnay
Spatial expansion, which is a crucial stage in the process to successful biological invasion, is anticipated to profoundly affect the magnitude and spatial distribution of genetic diversity in novel colonized areas. Here we show that, contrasting common expectations, Pyrenean rocket (Sisymbrium austriacum), retained SNP diversity as this introduced plant species descended in the Meuse river basin. Allele frequencies did not mirror between-population distances along the predominant expansion axis. Reconstruction of invasion history based on the genotypes of historical herbarium specimens indicated no influence of additional introductions or multiple points of entry on this non-gradual pattern...
March 27, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28345104/biology-and-toxicology-of-tellurium-explored-by-speciation-analysis
#13
Yasumitsu Ogra
Tellurium (Te) is widely used in industry because it has unique physicochemical properties. Although Te is a non-essential element in animals and plants, it is expected to be metabolized to organometallic compounds having a carbon-Te bond in living organisms exposed to inorganic Te compounds. Thus, the speciation and identification of tellurometabolites are expected to contribute to the depiction of the metabolic chart of Te. Speciation by elemental mass spectrometry and identification by molecular mass spectrometry coupled with separation techniques have significantly contributed to the discovery of tellurometabolites in animals and plants...
March 27, 2017: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/28344587/the-chloroplast-genome-of-passiflora-edulis-passifloraceae-assembled-from-long-sequence-reads-structural-organization-and-phylogenomic-studies-in-malpighiales
#14
Luiz A Cauz-Santos, Carla F Munhoz, Nathalie Rodde, Stephane Cauet, Anselmo A Santos, Helen A Penha, Marcelo C Dornelas, Alessandro M Varani, Giancarlo C X Oliveira, Hélène Bergès, Maria Lucia C Vieira
The family Passifloraceae consists of some 700 species classified in around 16 genera. Almost all its members belong to the genus Passiflora. In Brazil, the yellow passion fruit (Passiflora edulis) is of considerable economic importance, both for juice production and consumption as fresh fruit. The availability of chloroplast genomes (cp genomes) and their sequence comparisons has led to a better understanding of the evolutionary relationships within plant taxa. In this study, we obtained the complete nucleotide sequence of the P...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28344582/involvement-of-small-rnas-in-phosphorus-and-sulfur-sensing-signaling-and-stress-current-update
#15
REVIEW
Smita Kumar, Saurabh Verma, Prabodh K Trivedi
Plants require several essential mineral nutrients for their growth and development. These nutrients are required to maintain physiological processes and structural integrity in plants. The root architecture has evolved to absorb nutrients from soil and transport them to other parts of the plant. Nutrient deficiency affects several physiological and biological processes in plants and leads to reduction in crop productivity and yield. To compensate this adversity, plants have developed adaptive mechanisms to enhance the acquisition, conservation, and mobilization of these nutrients under deficient or adverse conditions...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28344556/the-immunomodulatory-effects-of-plant-extracts-and-plant-secondary-metabolites-on-chronic-neuroinflammation-and-cognitive-aging-a-mechanistic-and-empirical-review
#16
REVIEW
Christina Kure, Jorinde Timmer, Con Stough
Advances in healthcare have considerably improved the life expectancy of the human population over the last century and this has brought about new challenges. As we live longer the capacity for cognitive aging increases. Consequently, it has been noted that decline in cognitive performance in the elderly in domains of reasoning, problem solving skills, attention, processing speed, working memory and episodic memory is a significant societal problem. Despite the enormity of this issue there are relatively few interventions for cognitive aging...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28344493/volatile-constituents-and-biological-activities-of-the-leaf-and-root-of-echinacea-species-from-south-africa
#17
M Nyalambisa, I A Oyemitan, R Matewu, O O Oyedeji, O S Oluwafemi, S P Songca, B N Nkeh-Chungag, A O Oyedeji
Echinacea is used ethnomedicinally for the treatment of various diseases such as cough, respiratory infections, and bronchitis among other uses in Eastern Cape region of South Africa. This study evaluated the volatile components of the essential oil of the plant, its toxicity, anti-inflammatory and analgesic activities in rodents. Dried leaf and root of the plant were separately processed by hydrodistillation for 4 h and their essential oils (EOs) were collected. Extracted oils were subjected to GC/GC-MS analysis...
March 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28344474/biologically-guided-isolation-of-leishmanicidal-secondary-metabolites-from-euphorbia-peplus-l
#18
Elham Amin, Abeer Moawad, Hossam Hassan
Leishmaniasis is a worldwide health problem, highly endemic in developing countries. Moreover, the severe side effects and the reported drug resistance make it an urgent need to search for effective drugs that can replace or supplement those currently used. In a research program designed to investigate the antileishmanial activity of plants collected from the Egyptian flora, twenty extracts from fifteen plants growing in Egypt have been investigated for in vitro leishmanicidal activity against Leishmania donovani promastigotes...
February 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28343913/sumoylation-inhibition-mediated-by-disruption-of-sumo-e1-e2-interactions-confers-plant-susceptibility-to-necrotrophic-fungal-pathogens
#19
Laura Castaño-Miquel, Abraham Mas, Inês Teixeira, Josep Seguí, Anna Perearnau, Bhagyasree N Thampi, Arnaldo L Schapire, Natalia Rodrigo, Gaelle La Verde, Silvia Manrique, Maria Coca, L Maria Lois
Protein modification by SUMO modulates essential biological processes in eukaryotes. SUMOylation is facilitated by sequential action of the E1-activating, E2-conjugating, and E3-ligase enzymes. In plants, SUMO regulates plant development and stress responses, which are key determinants in agricultural productivity. To generate additional tools for advancing our knowledge about the SUMO biology, we have developed a strategy for inhibiting in vivo SUMO conjugation based on disruption of SUMO E1-E2 interactions through expression of E1 SAE2(UFDCt) domain...
February 14, 2017: Molecular Plant
https://www.readbyqxmd.com/read/28343393/selenium-bioaccessibility-and-speciation-in-selenium-enriched-lettuce-investigation-of-the-selenocompounds-liberated-after-in-vitro-simulated-human-digestion-using-two-dimensional-hplc-icp-ms
#20
Emanueli DO Nascimento DA Silva, Federica Aureli, Marilena D'Amato, Andrea Raggi, Solange Cadore, Francesco Cubadda
The evaluation of selenium-enriched vegetables as potential dietary sources of selenium, an essential element for humans, requires an assessment of the plant accumulation ability as well as of the bioaccessibility and speciation of the accumulated selenium, which influence its biological effects in humans. Lettuce hydroponically grown at three selenite (SeVI)/selenate (SeIV) amendment levels was characterized accordingly. Selenium accumulation in lettuce leaves was greatest with Se(VI) amendment, whereas bioaccessibility was 70% on average in both cases...
March 27, 2017: Journal of Agricultural and Food Chemistry
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