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https://www.readbyqxmd.com/read/28708051/ralstonia-solanacearum-novel-e3-ubiquitin-ligase-nel-effectors-ripaw-and-ripar-suppress-pattern-triggered-immunity-in-plants
#1
Masahito Nakano, Kenji Oda, Takafumi Mukaihara
Ralstonia solanacearum is the causal agent of bacterial wilt in solanaceous crops. This pathogen injects more than 70 effector proteins into host plant cells via the Hrp type III secretion system to cause a successful infection. However, the function of these effectors in plant cells, especially in the suppression of plant immunity, remains largely unknown. In this study, we characterized two Ralstonia solanacearum effectors, RipAW and RipAR, which share homology with the IpaH family of effectors from animal and plant pathogenic bacteria, that have a novel E3 ubiquitin ligase (NEL) domain...
July 15, 2017: Microbiology
https://www.readbyqxmd.com/read/28699103/expansion-of-pathogen-recognition-specificity-in-plants-using-pattern-recognition-receptors-and-artificially-designed-decoys
#2
REVIEW
Lifan Sun, Jun Qin, Kailun Wang, Jie Zhang
Pathogen/microbe-associated molecular patterns (PAMPs/MAMPs) are recognized by plant pattern recognition receptors (PRRs) localized on the cell surface to activate immune responses. This PAMP-triggered immunity (PTI) confers resistance to a broad range of pathogenic microbes and, therefore, has a great potential for genetically engineering broad-spectrum resistance by transferring PRRs across plant families. Pathogenic effectors secreted by phytopathogens often directly target and inhibit key components of PTI signaling pathways via diverse biochemical mechanisms...
July 10, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28691210/e3-ligase-saul1-serves-as-a-positive-regulator-of-pamp-triggered-immunity-and-its-homeostasis-is-monitored-by-immune-receptor-soc3
#3
Meixuezi Tong, Tanja Kotur, Wanwan Liang, Katja Vogelmann, Tatjana Kleine, Dario Leister, Catharina Brieske, Shuhua Yang, Daniel Lüdke, Marcel Wiermer, Yuelin Zhang, Xin Li, Stefan Hoth
In both plants and animals, intracellular nucleotide-binding leucine-rich repeat proteins (NLRs; or Nod-like receptors) serve as immune receptors to recognize pathogen-derived molecules and mount effective immune responses against microbial infections. Plant NLRs often guard the presence or activity of other host proteins, which are the direct virulence targets of pathogen effectors. These guardees are sometimes immune-promoting components such as those in a mitogen-activated protein kinase cascade. Plant E3 ligases serve many roles in immune regulation, but it is unclear whether they can also be guarded by NLRs...
July 10, 2017: New Phytologist
https://www.readbyqxmd.com/read/28687784/whole-transcriptome-sequencing-of-pseudomonas-syringae-pv-actinidiae-infected-kiwifruit-plants-reveals-species-specific-interaction-between-long-non-coding-rna-and-coding-genes
#4
Zupeng Wang, Yifei Liu, Li Li, Dawei Li, Qiong Zhang, Yangtao Guo, Shuaibin Wang, Caihong Zhong, Hongwen Huang
An outbreak of kiwifruit bacterial canker disease caused by Pseudomonas syringae pv. actinidiae (Psa) beginning in 2008 caused disaster to the kiwifruit industry. However the mechanisms of interaction between kiwifruit and Psa are unknown. Long noncoding RNAs (lncRNAs) are known to regulate many biological processes, but comprehensive repertoires of kiwifruit lncRNAs and their effects on the interaction between kiwifruit and Psa are unknown. Here, based on in-depth transcriptomic analysis of four kiwifruit materials at three stages of infection with Psa, we identified 14,845 transcripts from 12,280 loci as putative lncRNAs...
July 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28685662/simultaneous-functional-photoacoustic-microscopy-and-electrocorticography-reveal-the-impact-of-rtpa-on-dynamic-neurovascular-functions-after-cerebral-ischemia
#5
Aishwarya Bandla, Lun-De Liao, Su Jing Chan, Ji Min Ling, Yu-Hang Liu, Yen-Yu Ian Shih, Han-Chi Pan, Peter Tsun-Hon Wong, Hsin-Yi Lai, Nicolas Kon Kam King, You-Yin Chen, Wai Hoe Ng, Nitish V Thakor
The advance of thrombolytic therapy has been hampered by the lack of optimization of the therapy during the hyperacute phase of focal ischemia. Here, we investigate neurovascular dynamics using a custom-designed hybrid electrocorticography (ECoG)-functional photoacoustic microscopy (fPAM) imaging system during the hyperacute phase (first 6 h) of photothrombotic ischemia (PTI) in male Wistar rats following recombinant tissue plasminogen activator (rtPA)-mediated thrombolysis. We reported, for the first time, the changes in neural activity and cerebral hemodynamic responses following rtPA infusion at different time points post PTI...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28678518/single-crystal-luminescent-carbon-nitride-nanosheets-formed-by-spontaneous-dissolution
#6
Thomas S Miller, Theo M Suter, Andrew M Telford, Loren Picco, Oliver D Payton, Freddie Russell-Pavier, Patrick L Cullen, Andrea Sella, Milo S P Shaffer, Jenny Nelson, Vasiliki Tileli, Paul F McMillan, Christopher A Howard
A primary method for the production of 2D nanosheets is liquid-phase delamination from their 3D layered bulk analogues. Most strategies currently achieve this objective by significant mechanical energy input or chemical modification but these processes are detrimental to the structure and properties of the resulting 2D nanomaterials. Bulk poly(triazine imide) (PTI)-based carbon nitrides are layered materials with a high degree of crystalline order. Here, we demonstrate that these semiconductors are spontaneously soluble in select polar aprotic solvents, that is, without any chemical or physical intervention...
July 5, 2017: Nano Letters
https://www.readbyqxmd.com/read/28667952/simultaneous-measurement-of-thermal-conductivity-and-heat-capacity-by-flash-thermal-imaging-methods
#7
N Tao, X L Li, J G Sun
Thermal properties are important for material applications involved with temperature. Although many measurement methods are available, they may not be convenient to use or have not been demonstrated suitable for testing of a wide range of materials. To address this issue, we developed a new method for the nondestructive measurement of the thermal effusivity of bulk materials with uniform property. This method is based on the pulsed thermal imaging-multilayer analysis (PTI-MLA) method that has been commonly used for testing of coating materials...
June 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28640974/resistance-to-powdery-mildew8-1-boosts-pattern-triggered-immunity-against-multiple-pathogens-in-arabidopsis-and-rice
#8
Yan Li, Yong Zhang, Qing-Xia Wang, Ting-Ting Wang, Xiao-Long Cao, Zhi-Xue Zhao, Sheng-Li Zhao, Yong-Ju Xu, Zhi-Yuan Xiao, Jin-Lu Li, Jing Fan, Hui Yang, Fu Huang, Shunyuan Xiao, Wen-Ming Wang
The Arabidopsis gene RESISTANCE TO POWDERY MILDEW8.1 (RPW8.1) confers resistance to virulent fungal and oomycete pathogens that cause powdery mildew and downy mildew, respectively. However, the underlying mechanism remains unclear. Here, we show that ectopic expression of RPW8.1 boosts pattern-triggered immunity (PTI) resulting in enhanced resistance against different pathogens in both Arabidopsis and rice. In Arabidopsis, transcriptome analysis revealed that ectopic expression of RPW8.1-YFP constitutively up-regulates expression of many pathogen-associated molecular pattern-(PAMP-) inducible genes...
June 22, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28575986/co-culturing-epidermal-keratinocytes-and-dermal-fibroblasts-on-nano-structured-titanium-surfaces
#9
Jing Tan, Chanjuan Zhao, Jie Zhou, Ke Duan, Jianxin Wang, Xiong Lu, Jie Weng, Bo Feng
Long-term success of percutaneous implants depends mostly on the stable connection between the soft tissue and implant surface because bacterial invasion and infection can be prevented by a proper seal between the skin and implant. The percutaneous seal is affected by responses of keratinocytes and/or fibroblasts to the implant. Herein, the in vitro functionality of fibroblasts and keratinocytes on titania nanotubes (TNT) and polished titanium (pTi) surfaces was investigated by different culture methods. Adhesion, proliferation, morphology, and differentiation were evaluated by cell viability assay, fluorescence microscopy, real-time quantitative polymerase chain reaction (RT-PCR), and indirect immunofluorescence...
September 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28554665/population-incidence-of-pedestrian-traffic-injury-in-high-income-countries-a-systematic-review
#10
REVIEW
Kate E Charters, Belinda J Gabbe, Biswadev Mitra
BACKGROUND: Road traffic injuries are the fifth leading cause of years of life lost, with pedestrians comprising 39% of all road deaths. International recognition of this public health issue has led to a reduction in road traffic deaths in many high-income countries. However data on non-motorised road users such as pedestrians is incomplete. Additionally, non-fatal injuries are poorly documented. The aim of this study was to identify the incidence of pedestrian traffic injury reported from high-income countries...
May 18, 2017: Injury
https://www.readbyqxmd.com/read/28546091/comparative-secretome-analysis-of-colletotrichum-falcatum-identifies-a-cerato-platanin-protein-epl1-as-a-potential-pathogen-associated-molecular-pattern-pamp-inducing-systemic-resistance-in-sugarcane
#11
N M R Ashwin, Leonard Barnabas, Amalraj Ramesh Sundar, Palaniyandi Malathi, Rasappa Viswanathan, Antonio Masi, Ganesh Kumar Agrawal, Randeep Rakwal
Colletotrichum falcatum, an intriguing hemibiotrophic fungal pathogen causes red rot, a devastating disease of sugarcane. Repeated in vitro subculturing of C. falcatum under dark condition alters morphology and reduces virulence of the culture. Hitherto, no information is available on this phenomenon at molecular level. In this study, the in vitro secretome of C. falcatum cultured under light and dark conditions was analyzed using 2-DE coupled with MALDI TOF/TOF MS. Comparative analysis identified nine differentially abundant proteins...
May 22, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28535079/the-tomato-kinase-pti1-contributes-to-production-of-reactive-oxygen-species-in-response-to-two-flagellin-derived-peptides-and-promotes-resistance-to-pseudomonas-syringae-infection
#12
Simon Schwizer, Christine M Kraus, Diane M Dunham, Yi Zheng, Noe Fernandez-Pozo, Marina A Pombo, Zhangjun Fei, Suma Chakravarthy, Gregory Martin
The Pti1 kinase was identified from a reverse genetic screen as contributing to pattern-triggered immunity (PTI) against Pseudomonas syringae pv. tomato (Pst). This was unexpected because Pti1 was originally identified as an interactor of the Pto kinase and was implicated in effector-triggered immunity. The tomato genome has two Pti1 genes, referred to as Pti1a and Pti1b. A hairpin-Pti1 (hpPti1) construct was developed and used to generate two independent stable transgenic tomato lines, which had reduced transcript abundance of both genes...
May 23, 2017: Molecular Plant-microbe Interactions: MPMI
https://www.readbyqxmd.com/read/28528359/anatomic-basis-of-le-fort-1-impaction-osteotomy-a-radiological-study
#13
Rivka Bendrihem, Christian Vacher, Audrey Fohlen, Jean-Pierre Pelage
PURPOSE: In Le Fort 1 osteotomy when a maxillary impaction is necessary, surgeons have to face different anatomical problems. (1) To determine the best bone resection route, they have to consider the situation of dental roots, infraorbital foramen and maxillary artery. (2) In case of Le Fort 1 osteotomy combined with a mandibular sagittal split osteotomy, the palate has to be replaced in horizontal position although there is no anatomical landmark. (3) In case of Gummy smiles, it can be due to either long face or short upper lip...
May 20, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28525309/from-chaos-to-harmony-responses-and-signaling-upon-microbial-pattern-recognition
#14
Xiao Yu, Baomin Feng, Ping He, Libo Shan
Pathogen- or microbe-associated molecular patterns (PAMPs/MAMPs) are detected as nonself by host pattern recognition receptors (PRRs) and activate pattern-triggered immunity (PTI). Microbial invasions often trigger the production of host-derived endogenous signals referred to as dangeror damage-associated molecular patterns (DAMPs), which are also perceived by PRRs to modulate PTI responses. Collectively, PTI contributes to host defense against infections by a broad range of pathogens. Remarkable progress has been made toward demonstrating the cellular and physiological responses upon pattern recognition, elucidating the molecular, biochemical, and genetic mechanisms of PRR activation as well as dissecting the complex signaling networks that orchestrate PTI responses...
May 19, 2017: Annual Review of Phytopathology
https://www.readbyqxmd.com/read/28501024/sensing-of-molecular-patterns-through-cell-surface-immune-receptors
#15
REVIEW
Stefanie Ranf
In plants, sensing of Pathogen/Microbe-Associated Molecular Patterns (PAMPs/MAMPs) and host-derived Damage-Associated Molecular Patterns (DAMPs) by host cell surface Pattern Recognition Receptors (PRRs) activates Pattern-Triggered Immunity (PTI). The identification of an increasing number of immunogenic patterns and PRRs illustrates that PTI is a universal defence mechanism against pathogens, pests, and parasitic plants, and that evolutionary selective pressure drives diversification of molecular patterns and diversity of PRRs...
May 10, 2017: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/28499665/persistent-t-wave-inversion-predicts-myocardial-damage-after-st-elevation-myocardial-infarction
#16
Martin Reindl, Sebastian Johannes Reinstadler, Hans-Josef Feistritzer, Lea Niess, Constantin Koch, Agnes Mayr, Gert Klug, Bernhard Metzler
BACKGROUND: Persistent T-wave inversion (PTI) after ST-elevation myocardial infarction (STEMI) is associated with worse clinical outcome; however, the underlying mechanism between PTI and poor prognosis is incompletely understood. We sought to investigate the relationship between PTI and myocardial damage assessed by cardiac magnetic resonance (CMR) following STEMI. METHODS: In this prospective observational study, we included 142 consecutive revascularized STEMI patients...
May 5, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28491934/data-on-anti-insulation-detection-via-point-of-thermal-inflexion-pti-in-1248-cases-13-climates-four-occupancy-profiles-six-wall-configurations-and-four-insulation-levels
#17
Yasin M Idris, Masayuki Mae
The data in this article are the simulation results of 1248 cases that were carried out to detect anti-insulation behaviour in the article titled "Anti-insulation mitigation by altering the envelope layers' configuration" (Idris and Mae, 2017) [1]. These cases are generated by a matrix of 13 climates, 6 envelope layer configurations, 4 occupancy profiles and 4 levels of insulation thickness. The data are concerned with the annual cooling and heating loads of these cases. In addition, the data include the Point of Thermal Inflexion (PTI) values and their anti-insulation pattern, when PTI is found...
June 2017: Data in Brief
https://www.readbyqxmd.com/read/28488106/treatment-evaluation-of-flow-limiting-stenoses-of-the-superficial-femoral-and-popliteal-artery-by-parametric-color-coding-analysis-of-digital-subtraction-angiography-series
#18
Michael Kostrzewa, Kerim Kara, Lothar Pilz, Hannelore Mueller-Muertz, Nils Rathmann, Stefan O Schoenberg, Steffen J Diehl
PURPOSE: To evaluate the hemodynamic effect of percutaneous transluminal intervention (PTI) on stenosis of the superficial femoral (SFA) and popliteal arteries (PA) using time-density curves (TDCs) derived from digital subtraction angiography (DSA) series in correlation with ultrasound peak systolic velocity ratio (PSVR) and ankle brachial index (ABI). MATERIALS AND METHODS: DSA series of SFA or PA of patients with symptomatic peripheral arterial occlusive disease was obtained with a flat-panel angiography system with intention-to-treat...
May 9, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28487714/both-light-induced-sa-accumulation-and-eti-mediators-contribute-to-the-cell-death-regulated-by-bak1-and-bkk1
#19
Yang Gao, Yujun Wu, Junbo Du, Yanyan Zhan, Doudou Sun, Jianxin Zhao, Shasha Zhang, Jia Li, Kai He
Receptor-like kinases BAK1 and BKK1 modulate multiple cellular processes including brassinosteroid signaling and PRR-mediated PTI in Arabidopsis. Our previous reports also demonstrated that bak1 bkk1 double mutants exhibit a spontaneous cell death phenotype under normal growth condition. With an unknown mechanism, the cell death in bak1 bkk1 is significantly suppressed when grown in dark but can be quickly induced by light. Furthermore, little is known about intrinsic components involved in BAK1 and BKK1-regulated cell death pathway...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28484817/pen-torch-transillumination-difficult-venepuncture-made-easy
#20
Elijah Zhengyang Cai, Kalarani Sankaran, Monica Tan, Yiong Huak Chan, Thiam Chye Lim
INTRODUCTION: Our novel technique of pen torch transillumination (PTI) uses a cheap and easily available instrument (Penlite-LP212(®), Energizer(®), Missouri, USA) to visualize superficial veins invisible to the naked eye. We evaluate the efficacy of PTI in improving venepuncture success rate (SR) for patients with poor venous access. METHODS: This prospective randomized controlled trial looked at adult patients (n = 69) aged 21-90 with difficult venous access (history of ≥3 consecutive attempts required for successful cannulation during the current admission) requiring non-emergent venepuncture...
May 8, 2017: World Journal of Surgery
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