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https://www.readbyqxmd.com/read/28228762/chronic-drought-decreases-anabolic-and-catabolic-bvoc-emissions-of-quercus-pubescens-in-a-mediterranean-forest
#1
Amélie Saunier, Elena Ormeño, Henri Wortham, Brice Temime-Roussel, Caroline Lecareux, Christophe Boissard, Catherine Fernandez
Biogenic volatile organic compounds (BVOC) emitted by plants can originate from both anabolism (metabolite production through anabolic processes) and catabolism (metabolite degradation by oxidative reactions). Drought can favor leaf oxidation by increasing the oxidative pressure in plant cells. Thus, under the precipitation decline predicted for the Mediterranean region, it can be expected both strong oxidation of anabolic BVOC within leaves and, as a result, enhanced catabolic BVOC emissions. Using an experimental rain exclusion device in a natural forest, we compared the seasonal course of the emissions of the main anabolic BVOC released by Q...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28228112/three-case-reports-of-post-immunization-and-post-viral-bullous-pemphigoid-looking-for-the-right-trigger
#2
Luca Baroero, Paola Coppo, Laura Bertolino, Stefano Maccario, Francesco Savino
BACKGROUND: Bullous pemphigoid (BP) is a blistering skin disorder infrequent in infancy and rarely reported in medical literature. CASE PRESENTATION: Here we describe three cases of BP which were referred to our department in the last 15 years. Two of them developed an eruption of bullous lesions just a few days after vaccination for diphtheria, tetanus, pertussis, poliomyelitis, hepatitis B and Haemophilus influenzae B. The third patient developed the same blistering lesions shortly after herpetic stomatitis...
February 23, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28226194/melatonin-systemically-ameliorates-drought-stress-induced-damage-in-medicago-sativa-plants-by-modulating-nitro-oxidative-homeostasis-and-proline-metabolism
#3
Chrystalla Antoniou, Giannis Chatzimichail, Rafaella Xenofontos, Giannis Pavlou, Evangelia Panagiotou, Anastasis Christou, Vasileios Fotopoulos
Recent reports have uncovered the multifunctional role of melatonin in plant physiological responses under optimal and sub-optimal environmental conditions. In this study, we explored whether melatonin pretreatment could provoke priming effects in alfalfa (Medicago sativa L.) plants subsequently exposed to prolonged drought stress (7 days), by withholding watering. Results revealed that the rhizospheric application of melatonin (10 μM) remarkably enhanced the drought tolerance of alfalfa plants, as evidenced by the observed plant tolerant phenotype, as well as by the higher levels of chlorophyll fluorescence and stomatal conductance, compared with non-treated drought-stressed plants...
February 22, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28225027/variable-salinity-responses-of-12-alfalfa-genotypes-and-comparative-expression-analyses-of-salt-response-genes
#4
Devinder Sandhu, Monica V Cornacchione, Jorge F S Ferreira, Donald L Suarez
Twelve alfalfa genotypes that were selected for biomass under salinity, differences in Na and Cl concentrations in shoots and K/Na ratio were evaluated in this long-term salinity experiment. The selected plants were cloned to reduce genetic variability within each genotype. Salt tolerance (ST) index of the genotypes ranged from 0.39 to 1. The most salt-tolerant genotypes SISA14-1 (G03) and AZ-90ST (G10), the top performers for biomass, exhibited the least effect on shoot number and height. SISA14-1 (G03) accumulated low Na and Cl under salinity...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28224235/oral-mucosal-changes-induced-by-anticancer-targeted-therapies-and-immune-checkpoint-inhibitors
#5
REVIEW
Emmanuelle Vigarios, Joel B Epstein, Vincent Sibaud
Development of biological targeted therapies and immune checkpoint inhibitors has redefined the treatment for many cancers; however, the increasing use of new protocols has led to physicians observing a new spectrum of toxicities. To date, oral adverse events induced by these new anticancer therapies have been mainly reported using nonspecific terminology ("stomatitis," "mucosal inflammation," "mucositis") and remain poorly characterized, with the exception of mammalian target of rapamycin (mTOR) inhibitor-associated stomatitis...
February 22, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28224119/vesicular-stomatitis-virus-vectored-multi-antigen-tuberculosis-vaccine-limits-bacterial-proliferation-in-mice-following-a-single-intranasal-dose
#6
Ming Zhang, Chunsheng Dong, Sidong Xiong
Tuberculosis (TB) remains a serious health problem worldwide, and an urgent need exists to improve or replace the available vaccine, Mycobacterium bovis bacillus Calmette-Guérin (BCG). Most vaccination protocols adapt two or three doses to induce long-term lasting immunity. Our previous study showed that the naked DNA encoding the triple-antigen fusion TFP846 (Rv3615c-Mtb10.4-Rv2660c) induced robust T cellular immune responses accompanying four inoculations against mycobacteria infection. However, a number of compliance issues exist in some areas lacking the appropriate medical infrastructure with multiple administrations...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28223990/editorial-signal-transduction-in-stomatal-guard-cells
#7
EDITORIAL
Agepati S Raghavendra, Yoshiyuki Murata
No abstract text is available yet for this article.
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28221853/is-there-a-relation-between-the-microscopic-leaf-morphology-and-the-association-of-salmonella-and-escherichia-coli-o157-h7-with-iceberg-lettuce-leaves
#8
Inge VAN der Linden, Markus Eriksson, Mieke Uyttendaele, Frank Devlieghere
To prevent contamination of fresh produce with enteric pathogens, more insight into mechanisms that may influence the association of these pathogens with fresh produce is needed. In this study, Escherichia coli O157:H7 and Salmonella were chosen as model pathogens, and fresh cut iceberg lettuce was chosen as a model fresh produce type. The morphological structure of iceberg lettuce leaves (stomatal density and length of cell margins per leaf area) was quantified by means of leaf peels and light microscopy of leaves at different stages of development (outer, middle, and inner leaves of the crop) on both leaf sides (abaxial and adxial) and in three leaf regions (top, center, and bottom)...
October 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28221371/stomatal-development-grasses-vs-arabidopsis
#9
Guillaume Tena
No abstract text is available yet for this article.
August 2, 2016: Nature Plants
https://www.readbyqxmd.com/read/28220430/using-clear-nail-polish-to-make-arabidopsis-epidermal-impressions-for-measuring-the-change-of-stomatal-aperture-size-in-immune-response
#10
Shuchi Wu, Bingyu Zhao
Plant stomata are an essential route for bacterial pathogens to entry inside host tissue and cause diseases. As an important defense mechanism, plant stomata can actively restrict bacterial invasion by dynamically regulating the opening, closing, and reopening of stomatal guard cells. Therefore, accurately measuring the stomatal aperture size during the bacterial pathogenesis is an important approach to study the stomata related immunity. Several methods have been developed for stomatal aperture measurement...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28220429/stomatal-bioassay-to-characterize-bacterial-stimulated-pti-at-the-pre-invasion-phase-of-infection
#11
Jeanine Montano, Maeli Melotto
Bacterium-triggered stomatal closure is a functional output of plant immunity, also known as stomatal defense. This is an early response mediated by the recognition of pathogen-associated molecular patterns (PAMPs) by the plant's pathogen recognition receptors (PRRs). Several approaches to analyzing stomatal movement in response to bacteria have been described, but difficulties in fine-tuning the experimental procedures still exist. Here we provide a detailed method for assessing stomatal defense via high-quality microscopic imaging and explain trouble-shooting steps to obtaining robust data...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28220128/effect-of-leaf-water-potential-on-internal-humidity-and-co2-dissolution-reverse-transpiration-and-improved-water-use-efficiency-under-negative-pressure
#12
Timo Vesala, Sanna Sevanto, Tiia Grönholm, Yann Salmon, Eero Nikinmaa, Pertti Hari, Teemu Hölttä
The pull of water from the soil to the leaves causes water in the transpiration stream to be under negative pressure decreasing the water potential below zero. The osmotic concentration also contributes to the decrease in leaf water potential but with much lesser extent. Thus, the surface tension force is approximately balanced by a force induced by negative water potential resulting in concavely curved water-air interfaces in leaves. The lowered water potential causes a reduction in the equilibrium water vapor pressure in internal (sub-stomatal/intercellular) cavities in relation to that over water with the potential of zero, i...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28219014/stomatal-development-in-time-the-past-and-the-future
#13
REVIEW
Xian Qu, Kylee M Peterson, Keiko U Torii
Stomata have significantly diversified in nature since their first appearance around 400 million years ago. The diversification suggests the active reprogramming of molecular machineries of stomatal development during evolution. This review focuses on recent progress that sheds light on how this rewiring occurred in different organisms. Three specific aspects are discussed in this review: (i) the evolution of the transcriptional complex that governs stomatal state transitions; (ii) the evolution of receptor-ligand pairs that mediate extrinsic signaling; and (iii) the loss of stomatal development genes in an astomatous angiosperm...
February 17, 2017: Current Opinion in Genetics & Development
https://www.readbyqxmd.com/read/28216667/a-novel-hrm-assay-for-the-simultaneous-detection-and-differentiation-of-eight-poxviruses-of-medical-and-veterinary-importance
#14
Esayas Gelaye, Lukas Mach, Jolanta Kolodziejek, Reingard Grabherr, Angelika Loitsch, Jenna E Achenbach, Norbert Nowotny, Adama Diallo, Charles Euloge Lamien
Poxviruses belonging to the Orthopoxvirus, Capripoxvirus and Parapoxvirus genera share common host species and create a challenge for diagnosis. Here, we developed a novel multiplex PCR method for the simultaneous detection and differentiation of eight poxviruses, belonging to three genera: cowpox virus (CPXV) and camelpox virus (CMLV) [genus Orthopoxvirus]; goatpox virus (GTPV), sheeppox virus (SPPV) and lumpy skin disease virus (LSDV) [genus Capripoxvirus]; orf virus (ORFV), pseudocowpox virus (PCPV) and bovine papular stomatitis virus (BPSV) [genus Parapoxvirus]...
February 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28215695/inactivation-of-viruses-by-pasteurization-at-60%C3%A2-%C3%A2-c-for-10%C3%A2-h-with-and-without-40-glucose-as-stabilizer-during-a-new-manufacturing-process-of-%C3%AE-2-macroglobulin-from-cohn-fraction-iv
#15
Chaoji Huangfu, Yuyuan Ma, Junting Jia, Maomin Lv, Fengxuan Zhu, Xiaowei Ma, Xiong Zhao, Jingang Zhang
Pasteurization is regularly used to inactivate viruses for the safety of plasma derivatives. Influence of pasteurization at 60 °C for 10 h on α2-Macroglobulin activity and virus inactivation were studied. With 40% sugar as stabilizers more than 70% α2-Macroglobulin activity was reserved after pasteurization compared with 20% in control. Glucose presented a better activity protection effect than sucrose and maltose. By pasteurization without stabilizer the virus titers of pseudorabies virus, Sindbis virus, porcine parvovirus and encephalomyocarditis virus were reduced more than 5...
February 16, 2017: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/28214919/grapevine-acclimation-to-water-deficit-the-adjustment-of-stomatal-and-hydraulic-conductance-differs-from-petiole-embolism-vulnerability
#16
Uri Hochberg, Andrea Giulia Bonel, Rakefet David-Schwartz, Asfaw Degu, Aaron Fait, Hervé Cochard, Enrico Peterlunger, Jose Carlos Herrera
Drought-acclimated vines maintained higher gas exchange compared to irrigated controls under water deficit; this effect is associated with modified leaf turgor but not with improved petiole vulnerability to cavitation. A key feature for the prosperity of plants under changing environments is the plasticity of their hydraulic system. In the present research we studied the hydraulic regulation in grapevines (Vitis vinifera L.) that were first acclimated for 39 days to well-watered (WW), sustained water deficit (SD), or transient-cycles of dehydration-rehydration-water deficit (TD) conditions, and then subjected to varying degrees of drought...
February 18, 2017: Planta
https://www.readbyqxmd.com/read/28213733/the-localization-of-a-heterologous-displayed-antigen-in-the-baculovirus-budded-virion-determines-the-type-and-strength-of-induced-adaptive-immune-response
#17
Eugenia Tavarone, Guido Nicolás Molina, Sabrina Amalfi, Andrea Peralta, Paula Molinari, Oscar Taboga
In the search of strategies of presentation of heterologous antigens to elicit humoral or cellular immune responses that modulate and properly potentiate each type of response, researchers have been studying baculovirus (BV) as vaccine vectors with promising results. For some years, several research groups explored different antigen presentation approaches using the BV AcNPV by expressing polypeptides on the surface of budded virions or by de novo synthesis of heterologous antigens by transduction of mammalian cells...
February 17, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28211583/in%C3%A2-situ-temperature-response-of-photosynthesis-of-42-tree-and-liana-species-in-the-canopy-of-two-panamanian-lowland-tropical-forests-with-contrasting-rainfall-regimes
#18
Martijn Slot, Klaus Winter
Tropical forests contribute significantly to the global carbon cycle, but little is known about the temperature response of photosynthetic carbon uptake in tropical species, and how this varies within and across forests. We determined in situ photosynthetic temperature-response curves for upper canopy leaves of 42 tree and liana species from two tropical forests in Panama with contrasting rainfall regimes. On the basis of seedling studies, we hypothesized that species with high photosynthetic capacity - light-demanding, fast-growing species - would have a higher temperature optimum of photosynthesis (TOpt ) than species with low photosynthetic capacity - shade-tolerant, slow-growing species - and that, therefore, TOpt would scale with the position of a species on the slow-fast continuum of plant functional traits...
February 17, 2017: New Phytologist
https://www.readbyqxmd.com/read/28210449/oral-mucosal-lesions-in-a-chilean-elderly-population-a-retrospective-study-with-a-systematic-review-from-thirteen-countries
#19
César Rivera, Daniel Droguett, María-Jesús Arenas-Márquez
BACKGROUND: The oral examination is an essential part of the multidisciplinary medical care in elderly people. Oral mucosal lesions and normal variations of oral anatomy (OMLs) are very common in this people, but few studies have examined the frequency and prevalence of these conditions worldwide and less in Chile. The aim of this research was to evaluate the frequency of OMLs in a Chilean elderly population. MATERIAL AND METHODS: It was conducted a retrospective study (Talca, Chile)...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28207974/aamyb1-and-its-orthologue-atmyb61-affect-terpene-metabolism-and-trichome-development-in-artemisia-annua-and-arabidopsis-thaliana
#20
Luis Matías-Hernández, Weimin Jiang, Ke Yang, Kexuan Tang, Peter E Brodelius, Soraya Pelaz
The effective anti-malarial drug artemisinin (AN) isolated from Artemisia annua is relatively expensive due to the low content in the plant as it is only synthesized within the glandular trichomes. Therefore, genetic engineering of A. annua is one of the most promising approaches to improve AN yield. In this work, AaMYB1 transcription factor has been identified and characterized. When AaMYB1 is overexpressed in A. annua, either exclusively in trichomes or in the whole plant, essential AN biosynthetic genes are also overexpressed and consequently AN amount significantly increased...
February 16, 2017: Plant Journal: for Cell and Molecular Biology
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