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https://www.readbyqxmd.com/read/28816601/stomate-based-defense-and-environmental-cues
#1
Shweta Panchal, Maeli Melotto
Environmental conditions play crucial roles in modulating immunity and disease in plants. For instance, many bacterial disease outbreaks occur after periods of high humidity and rain. A critical step in bacterial infection is entry into the plant interior through wounds or natural openings, such as stomata. Bacterium-triggered stomatal closure is an integral part of the plant immune response to reduce pathogen invasion. Recently, we found that high humidity compromises stomatal defense, which is accompanied by regulation of the salicylic acid and jasmonic acid pathways in guard cells...
August 17, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28814859/inhibitory-effect-of-zirconium-oxide-nanoparticles-on-candida-albicans-adhesion-to-repaired-polymethyl-methacrylate-denture-bases-and-interim-removable-prostheses-a-new-approach-for-denture-stomatitis-prevention
#2
Mohammed M Gad, Ahmad M Al-Thobity, Suliman Y Shahin, Badar T Alsaqer, Aiman A Ali
BACKGROUND: Despite drawbacks, cold-cured acrylic resin is still the most common material used in denture repair. Zirconia nanoparticles were among the reinforcements added to increase the strength of the resin. The effect on Candida due to the addition of zirconia nanoparticles to the resin has not been investigated. PURPOSE: The aim of this study was to evaluate the effect of zirconia nanoparticles added to cold-cured acrylic resin on Candida albicans adhesion...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28810231/cr-induced-cellular-injury-and-necrosis-in-glycine-max-l-biochemical-mechanism-of-oxidative-damage-in-chloroplast
#3
Kalimuthu Balasaraswathi, Sivalingam Jayaveni, Janardhanam Sridevi, Dhanasingh Sujatha, Kavati Phebe Aaron, Chellan Rose
Chromium-induced toxicity and mechanisms of cell death involved in plants are yet to be fully elucidated. To understand the events of these processes, the stress response of the soybean plant using trivalent and hexavalent chromium compounds, namely, basic chromium sulphate (BCS) and potassium dichromate (K2Cr2O7) was investigated. The leaf surface morphology for stomatal aperture, wax deposition and presence of trichomes for chromium accumulation was examined by SEM-EDAX and light microscopy. The leaf mesophyll cell integrity was identified by trypan blue staining; chlorophyll autofluorescence, ROS generation and mitochondrial function were studied by fluorescence microscopy using different dyes...
August 2, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28809975/discovery-of-synthetic-small-molecules-that-enhance-the-number-of-stomata-c-h-functionalization-chemistry-for-plant-biology
#4
Asraa Ziadi, Naoyuki Uchida, Hiroe Kato, Rina Hisamatsu, Ayato Sato, Shinya Hagihara, Kenichiro Itami, Keiko U Torii
The increasing climate changes and global warming are leading to colossal agricultural problems such as abatement of food production and quality. As stomatal development is considered to play a key role in crop plant productivity and water-use efficiency, studying stomatal development is useful for understanding the productivity of plant systems for both natural and agricultural systems. Herein, we report the first-in-class synthetic small molecules enhancing the number of stomata in Arabidopsis thaliana that have been discovered by screening of the chemical library and further optimized by the Pd-catalyzed C-H arylation reaction...
August 15, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28808105/inhibitor-induced-oxidation-of-the-nucleus-and-cytosol-in-arabidopsis-thaliana-implications-for-organelle-to-nucleus-retrograde-signalling
#5
Barbara Karpinska, Sarah Owdah Alomrani, Christine H Foyer
Concepts of organelle-to-nucleus signalling pathways are largely based on genetic screens involving inhibitors of chloroplast and mitochondrial functions such as norflurazon, lincomycin (LINC), antimycin A (ANT) and salicylhydroxamic acid. These inhibitors favour enhanced cellular oxidation, but their precise effects on the cellular redox state are unknown. Using the in vivo reduction-oxidation (redox) reporter, roGFP2, inhibitor-induced changes in the glutathione redox potentials of the nuclei and cytosol were measured in Arabidopsis thaliana root, epidermal and stomatal guard cells, together with the expression of nuclear-encoded chloroplast and mitochondrial marker genes...
September 26, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28805727/leaf-physiological-and-proteomic-analysis-to-elucidate-silicon-induced-adaptive-response-under-salt-stress-in-rosa-hybrida-rock-fire
#6
Prabhakaran Soundararajan, Abinaya Manivannan, Chung Ho Ko, Sowbiya Muneer, Byoung Ryong Jeong
Beneficial effects of silicon (Si) on growth and development have been witnessed in several plants. Nevertheless, studies on roses are merely reported. Therefore, the present investigation was carried out to illustrate the impact of Si on photosynthesis, antioxidant defense and leaf proteome of rose under salinity stress. In vitro-grown, acclimatized Rosa hybrida 'Rock Fire' were hydroponically treated with four treatments, such as control, Si (1.8 mM), NaCl (50 mM), and Si+NaCl. After 15 days, the consequences of salinity stress and the response of Si addition were analyzed...
August 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28803402/actin-filaments-regulate-the-adhesion-between-the-plasma-membrane-and-the-cell-wall-of-tobacco-guard-cells
#7
Qin Yu, Jing-Jing Ren, Lan-Jing Kong, Xiu-Ling Wang
During the opening and closing of stomata, guard cells undergo rapid and reversible changes in their volume and shape, which affects the adhesion of the plasma membrane (PM) to the cell wall (CW). The dynamics of actin filaments in guard cells are involved in stomatal movement by regulating structural changes and intracellular signaling. However, it is unclear whether actin dynamics regulate the adhesion of the PM to the CW. In this study, we investigated the relationship between actin dynamics and PM-CW adhesion by the hyperosmotic-induced plasmolysis of tobacco guard cells...
August 13, 2017: Protoplasma
https://www.readbyqxmd.com/read/28803071/responses-of-szarvasi-1-energy-grass-to-sewage-sludge-treatments-in-hydroponics
#8
Ambrus Rév, Brigitta Tóth, Ádám Solti, Gyula Sipos, Ferenc Fodor
Sewage sludge (SS) originating from communal wastewater is a hazardous material but have a potentially great nutritive value. Its disposal after treatment in agricultural lands can be a very economical and safe way of utilization once fast growing, high biomass, perennial plants of renewable energy production are cultivated. Szarvasi-1 energy grass (Elymus elongatus subsp. ponticus cv. Szarvasi-1), a good candidate for this application, was grown in hydroponics in order to assess its metal accumulation and tolerance under increasing SS amendments...
August 1, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28801011/paraneoplastic-pemphigus-a-life-threatening-autoimmune-blistering-disease
#9
A Tirado-Sánchez, A Bonifaz
Paraneoplastic pemphigus (PNP), a subset of pemphigus, is a unique autoimmune blistering condition that can affect multiple organs other than the skin. It is a life-threatening disease associated with an underlying malignancy, most commonly of lymphoproliferative origin. The clinical picture may resemble pemphigus, pemphigoid, erythema multiforme, graft-versus-host disease, or lichen planus. The earliest and most consistent finding is a painful, severe, chronic and often recalcitrant stomatitis. Treatment of PNP is difficult...
August 8, 2017: Actas Dermo-sifiliográficas
https://www.readbyqxmd.com/read/28800533/deficiency-and-toxicity-of-boron-alterations-in-growth-oxidative-damage-and-uptake-by-citrange-orange-plants
#10
Asad Shah, Xiuwen Wu, Abid Ullah, Shah Fahad, Riaz Muhammad, Lei Yan, Cuncang Jiang
Boron (B) deficiency and toxicity are the major factors that affect plant growth and yield. The present study revealed the effect of B deficiency and toxicity on plant growth, morphology, physiology, and cell structure. A hydroponic culture experiment was conducted with five B levels, B deficient (B0), sufficient (B20, B10, B40) and toxic (B100). Our results show that both B deficient as well as excess level inhibit plant growth. In B deficiency, the major visible symptoms were appeared in roots, while B excess burned the leaf margin of older leaves...
August 8, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28796556/systemic-virotherapy-for-multiple-myeloma
#11
Stefania Oliva, Manuela Gambella, Mario Boccadoro, Sara Bringhen
The multiple myeloma (MM) treatment scenario has changed considerably over the past few years. Several novel targeted therapies are currently under consideration including oncolytic virotherapy. Areas covered: This review provides an analysis of the mechanisms of action of virotherapy, and summarizes the preclinical and clinical studies of systemic virotherapy developed for the treatment of MM. Different types of viruses have been identified, including: adenovirus, vaccinia virus, herpes simplex virus 1, myxoma virus, reovirus, measles virus, vesicular stomatitis virus and coxsackievirus A21...
August 10, 2017: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/28795772/the-potential-of-the-spectral-water-balance-index-wabi-for-crop-irrigation-scheduling
#12
Tal Rapaport, Uri Hochberg, Amnon Cochavi, Arnon Karnieli, Shimon Rachmilevitch
Hyperspectral sensing can detect slight changes in plant physiology, and may offer a faster and nondestructive alternative for water status monitoring. This premise was tested in the current study using a narrow-band 'water balance index' (WABI), which is based on independent changes in leaf water content (1500 nm) and the efficiency of the nonphotochemical quenching (NPQ) photo-protective mechanism (531 nm). The hydraulic, photo-protective and spectral behaviors of five important crops - grapevine, corn, tomato, pea and sunflower - were evaluated under water deficit conditions in order to associate the differences in stress physiology with WABI suitability...
August 10, 2017: New Phytologist
https://www.readbyqxmd.com/read/28795387/gefitinib-plus-fuzheng-kang-ai-formula-in-patients-with-advanced-non-small-cell-lung-cancer-with-epidermal-growth-factor-receptor-mutation-a-randomized-controlled-trial
#13
Xiao-Bing Yang, Xiao-Shu Chai, Wan-Yin Wu, Shun-Qin Long, Hong Deng, Zong-Qi Pan, Wen-Feng He, Yu-Shu Zhou, Gui-Ya Liao, Shu-Jing Xiao
OBJECTIVE: To evaluate the effect of Fuzheng Kang'ai Formula (, FZKA) plus gefitinib in patients with advanced non-small cell lung cancer with epidermal growth factor receptor (EGFR) mutations. METHODS: A randomized controlled trial was conducted from 2009 to 2012 in South China. Seventy chemotherapynaive patients diagnosed with stage IIIB/IV non-small cell lung cancer with EGFR mutations were randomly assigned to GF group [gefifitinib (250 mg/day orally) plus FZKA (250 mL, twice per day, orally); 35 cases] or G group (gefifitinib 250 mg/day orally; 35 cases) according to the random number table and received treatment until progression of the disease, or development of unacceptable toxicities...
August 9, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28794059/evolution-and-development-of-monocot-stomata
#14
Paula J Rudall, Elisabeth D Chen, Erin Cullen
PREMISE OF THE STUDY: Leaves of monocots are typically linear with parallel venation, though a few taxa have broad leaves. Studies of stomatal patterning and development in monocots required updating in the context of rapidly improving knowledge of both the phylogenetic and development-genetic context of monocots that facilitate studies of character evolution. METHODS: We used an existing microscope-slide collection to obtain data on stomatal structure across all the major monocot clades, including some species with relatively broad leaves...
August 9, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28793281/photosynthetic-limitation-and-mechanisms-of-photoprotection-under-drought-and-recovery-of-calotropis-procera-an-evergreen-c3-from-arid-regions
#15
Rebeca Rivas, Gabriella Frosi, Diego G Ramos, Silvia Pereira, Ana M Benko-Iseppon, Mauro G Santos
Calotropis procera is a C3 plant native from arid environmental zones. It is an evergreen, shrubby, non-woody plant with intense photosynthetic metabolism during the dry season. We measured photosynthetic parameters and leaf biochemical traits, such as gas exchange, photochemical parameters, A/Ci analysis, organic solutes, and antioxidant enzymes under controlled conditions in potted plants during drought stress, and following recovery conditions to obtain a better insight in the drought stress responses of C...
July 31, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28792952/everolimus-long-term-use-in-patients-with-tuberous-sclerosis-complex-four-year-update-of-the-exist-2-study
#16
John J Bissler, J Chris Kingswood, Elzbieta Radzikowska, Bernard A Zonnenberg, Elena Belousova, Michael D Frost, Matthias Sauter, Susanne Brakemeier, Petrus J de Vries, Noah Berkowitz, Maurizio Voi, Severine Peyrard, Klemens Budde
OBJECTIVES: We examined the long-term effects of everolimus in patients with renal angiomyolipoma associated with tuberous sclerosis complex or sporadic lymphangioleiomyomatosis. METHODS: Following favorable results from the double-blind core phase of EXIST-2 (NCT00790400), patients were allowed to receive open-label everolimus (extension phase). Patients initially randomly assigned to everolimus continued on the same dose; those who were receiving placebo crossed over to everolimus 10 mg/day...
2017: PloS One
https://www.readbyqxmd.com/read/28791608/achievement-of-the-longest-survival-of-paraneoplastic-pemphigus-with-bronchiolitis-obliterans-associated-with-follicular-lymphoma-using-r-chop-chemotherapy
#17
Shin Lee, Takahiro Yamauchi, Norito Ishii, Takashi Hashimoto, Keiichi Kinoshita, Shin Imamura, Kenichi Kamiya
Paraneoplastic pemphigus (PNP) is a rare, fatal, paraneoplastic autoimmune mucocutaneous blistering disease, commonly associated with lymphoproliferative disorders, including malignant lymphomas. Lymphoproliferative disorders associated with PNP are sometimes associated with a serious lung complication, bronchiolitis obliterans (BO). Due to its rarity, guidelines for the management of PNP have not been established. Furthermore, most patients die within 1 year. Here we report the successful treatment of lymphoma-associated PNP and BO using R-CHOP chemotherapy...
August 8, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28791296/metabolomics-and-proteomics-of-brassica-napus-guard-cells-in-response-to-low-co2
#18
Sisi Geng, Bing Yu, Ning Zhu, Craig Dufresne, Sixue Chen
Stomatal guard cell response to various stimuli is an important process that balances plant carbon dioxide (CO2) uptake and water transpiration. Elevated CO2 induces stomatal closure, while low CO2 promotes stomatal opening. The signaling process of elevated CO2 induced stomatal closure has been extensively studied in recent years. However, the mechanism of low CO2 induced stomatal opening is not fully understood. Here we report metabolomic and proteomic responses of Brassica napus guard cells to low CO2 using hyphenated mass spectrometry technologies...
2017: Frontiers in Molecular Biosciences
https://www.readbyqxmd.com/read/28791036/ectopic-expression-of-pii-induces-stomatal-closure-in-lotus-japonicus
#19
Aurora Parlati, Vladimir T Valkov, Enrica D'Apuzzo, Ludovico M Alves, Angelo Petrozza, Stephan Summerer, Alex Costa, Francesco Cellini, Alain Vavasseur, Maurizio Chiurazzi
The PII protein in plants has been associated to many different tissue specialized roles concerning the Nitrogen assimilation pathways. We report here the further characterization of L. japonicus transgenic lines overexpressing the PII protein encoded by the LjGLB1 gene that is strongly expressed in the guard cells of Lotus plants. Consistently with a putative role played by PII in that specific cellular context we have observed an alteration of the patterns of stomatal movement in the overexpressing plants...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28783371/molecular-characterization-and-biological-activity-of-interferon-%C3%AE-in-indian-peafowl-pavo-cristatus
#20
Hongjing Zhao, Yu Wang, Juanjuan Liu, Yizhi Shao, Jinglun Li, Hongliang Chai, Mingwei Xing
Interferon-α (IFN-α) genes have been cloned from a variety of animals, but information about Indian peafowl Pavo cristatus IFN-α (PcIFN-α) has not been reported. In this study, a PcIFN-α gene was amplified, which encoded a protein of 193 amino acids with a 26-amino acid signal peptide sharing 72.16-95.70% identity with other avians in Aves. After expression in prokaryote, purification, and renaturation, PcIFN-α was analyzed for its physicochemical property and antiviral activity. Cytopathic inhibition test showed that the recombinant PcIFN-α could inhibit the replication of vesicular stomatitis virus (VSV), Newcastle disease virus (NDV), and avian influenza virus (AIV) on chicken embryo fibroblasts...
August 7, 2017: DNA and Cell Biology
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