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Influence of cO_(2)/HcO_(3)^(-) on Microbial communities in Two Karst caves with High cO_(2)

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Journal of Earth Science 2023年第1期34卷 145-155页

作者： Jiyu chen Qiang Li Qiufang He heinz c.schroder Zujun Lu Daoxian Yuan Key Laboratory of Karst Dynamics MNR&GZARInstitute of Karst GeologyChinese Academy of Geological SciencesGuilin541004China International Research center on Karst under the Auspices of UNEScO Guilin541004China college of Life Science Guangxi Normal UniversityGuilin541006China Laboratory of Ecology of Rare and Endangered Species and Environmental Protection Ministry of EducationGuilin541004China School of Geographical Sciences Southwest UniversityChongqing400715China Institute for Physiological chemistry University Medical Center of Johannes Gutenberg UniversityMainz55128Germany

There is limited knowledge about microbial communities and their ecological functions in karst caves with high cO_(2)***,we studied the microbial community compositions and functions in Shuiming cave( "SMc",cO_(2)concentration 3 303 ppm) and Xueyu cave( "XYc",cO_(2)concentration 8 753 ppm) using Illumina MiSeq high-throughput sequencing in combination with BIOLOG *** results showed that Proteobacteria,Actinobacteria and Bacteroidetes were dominant phyla in these two caves,and Thaumarchaeota was the most abundant in the rock wall samples of *** microbial diversity in the water samples decreased with increasing HcO_(3)^(-)concentration,and it was higher in XYc than that in *** microbial community structures in the sediment and rock wall samples were quite different between the two *** concentrations of cO_(2)can reduce the microbial diversity on the rock walls in karst caves,probably through changing microbial preference for different types of carbon sources and decreasing the microbial utilization rate of carbon *** results expanded our understanding of microbial community and its response to environments in karst caves with high cO_(2).

关键词： karst cave cO_(2) microbial community composition microbiology function carbon source utilization

From nanoparticles via microtemplates and milliparticles to deep-sea nodules： biogenically driven mineral formation

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Frontiers of Materials Science 2012年第2期6卷 97-115页

作者： Xiao-Hong WANG Ute ScHLOI MAcHER Shun-Feng WANG heinz c.schroder Matthias WlENS Renato BATEL Werner E.G.MULLER National Research center for Geoanalysis Chinese Academy of Geological Sciences26 Baiwanzhuang DajieBeijing 100037China ERc Advanced Grant Research Group at the Institute for Physiological chemistry University Medical Center of the Johannes Gutenberg University MainzDuesbergweg 6D-55128 MainzGermany Ruder Boakove Institute Center for Marine ResearchGiordano Paliaga 5HR-52210 RovinjCroatia

Deep-sea minerals in polymetallic nodules and seamount co-rich crusts are not only formed by mineralization but also by biologically driven processes involving microorganisms （biomineralization）. Within the polymetallic nodules, free-living and biofilm-forming bacteria provide the matrix for manganese deposition, and in seamount co-rich crusts, coccolithophores represent the dominant organisms that act as bio-seeds for an initial manganese deposition. These （bio）minerals are economically important： manganese is an important alloying component and cobalt forms part of special steels in addition to being used, along with other rare metals, in plasma screens, hard-disk magnets and hybrid car motors. Recent progress in our understanding of the participation of the organic matrices in the enrichment of these metals might provide the basis for feasibility studies of biotechnological applications.

关键词： polymetallic nodule biomineralization bacteria sustainable exploitation

Biosilica-glass formation using enzymes from sponges [silicatein]： Basic aspects and application in biomedicine [bone reconstitution material and osteoporosis]

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Frontiers of computer Science 2011年第3期5卷 266-281页

作者： Shun-Feng WANG Xiao-Hong WANG Lu GAN Matthias WIENS heinz c. schroder Werner E, G. MOLLER Werner E. G. MOLLER National Research center for Geoanalysis Chinese Academy of Geological Sciences 26 Baiwanzhuang Dajie Beijing 100037 China Institute of Physiological chemistry University Medical Center of the Johannes Gutenberg University Mainz Duesbergweg 6 D-55128 Mainz Germany

In the last 15 years biomineralization, in particular biosilicification （i.e., the formation of biogenic silica, SiO2）, has become an exciting source of inspiration for the development of novel bionic approaches, following ＂Nature as model＂. Among the silica forming organisms there are the sponges that have the unique property to catalyze their silica skeletons by a specific enzyme termed silicatein. In the present review we summarize the present state of knowledge on silicatein-mediated ＂biosilica＂ formation in marine sponges, the involvement of further molecules in silica metabolism and their potential application in biomedicine. Recent advancements in the production of bone replacement material and in the potential use as a component in the treatment of osteoporosis are highlighted.

关键词： biomineralization biosilica medicine biomaterials osteoporosis

Flashing light in sponges through their siliceous fiber network:A new strategy of “neuronal transmission” in animals

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chinese Science Bulletin 2012年第25期57卷 3300-3311页

作者： WANG XiaoHong FAN XingTao schroder heinz c MULLER Werner E G National Research center for Geoanalysis Chinese Academy of Geological SciencesBeijing 100037China ERc Advanced Grant Research Group at the Institute for Physiological chemistry University Medical Center of the Johannes GutenbergUniversityMainz D-55099Germany

Sponges(phylum Porifera) represent a successful animal taxon that evolved prior to the Ediacaran-cambrian boundary(542 million years ago).They have developed an almost complete array of cell-and tissue-based interaction systems necessary for the establishment of a functional,multicellular ***,a network of neurons,one cell/tissue-communication system is missing in *** fact is puzzling and enigmatic,because these animals possess receptors known to be involved in the nervous system in evolutionary younger animal *** an example,the metabotropic glutamate/GABA-like receptor has been identified and cloned by ***,we have identified a novel light transmission/light responsive system in sponges that is based on their skeletal elements,the siliceous glass fibers,termed *** classes of sponges,the Hexactinellida and the Demospongiae,possess a siliceous skeleton that is composed of *** the large spicules from hexactinellid sponges(>5 cm) revealed that these spicules are effective light-collecting optical *** we can report that the demosponge,Suberites domuncula,has a biosensor system consisting of the(organic) light producing luciferase and the(inorganic) light transducing silica *** light transmission features of these smaller spicules(200 μm) has been demonstrated and the ability of the sponge tissue to generate light had been *** for a luciferase gene in *** was *** the next step,we searched for a protein potentially involved in light *** a protein was identified,cloned and recombinantly expressed from *** protein sequence displays two domains characteristic of a cryptochrome,the N-terminal photolyase-related region and the c-terminal FAD-binding *** experimental data indicate that sponges may employ a network of luciferase-like proteins,a spicular system and a cryptochrome as the light source,optical waveguide and photosensor,***

关键词：海绵组织动物类群光纤网络硅质神经传导闪烁荧光素酶基因蛋白质序列

Sterile signals generate weaker and delayed macrophage NLRP3 inflammasome responses relative to microbial signals

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cellular & Molecular Immunology 2017年第1期14卷 118-126页

作者： Jelena S Bezbradica Rebecca c coll Kate schroder Institute for Molecular Bioscience (IMB) IMB Centre for Inflammation and Disease Research and Australian Infectious Diseases Research Centre The University of Queensland Brisbane St Lucia Queensland 4072 Australia

Inflammation is the host response to microbial infection or sterile injury that aims to eliminate the insult, repair the tissue and restore homeostasis. Macrophages and the NLRP3 inflammasome are key sentinels for both types of insult. Although it is well established that the NLRP3 inflammasome is activated by microbial products and molecules released during sterile injury, it is unclear whether the responses elicited by these different types of signals are distinct. In this study, we used lipopolysaccharide and tumor necrosis factor as prototypical microbial and sterile signal 1 stimuli, respectively, to prime the NLRP3 inflammasome. We then used the bacterial toxin nigericin and a common product released from necrotic cells, ATP, as prototypical microbial and sterile signal 2 stimuli, respectively, to trigger the assembly of the NLRP3 inflammasome complex in mouse and human macrophages. We found that NLRP3 inflammasome responses were weakest when both signal 1 and signal 2 were sterile, but responses were faster and stronger when at least one of the two signals was microbial. Ultimately, the most rapid and potent responses were elicited when both signals were microbial. Together, these data suggest that microbial versus sterile signals are distinct, both kinetically and in magnitude, in their ability to generate inflammasome-dependent responses. This hierarchy of NLRP3 responses to sterile versus microbial stimuli likely reflects the urgent need for the immune system to respond rapidly to the presence of infection to halt pathogen dissemination.

关键词： inflammasome NLRP3 sterile inflammation TNF

Improvement of the corrosion Resistance of High Alloyed Austenitic cr-Ni-Mo Stainless Steels by Solution Nitriding

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材料热处理学报 2004年第5期25卷 316-321页

作者： christine Eckstein heinz- Joachim Spies Jochen Albrecht Dept. of Materials Eng. Technische Universitat Bergakademie Freiberg 09599 Freiberg/GermanyDept. of Materials Eng. Technische Universitat Bergakademie Freiberg 09599 Freiberg/GermanyInstitut Fresenius GmbH Solid State Analytic Zur Wetterwarte 10Haus 107 01109 Dresden Germany

characteristic features of austenitic steel grades combine a good corrosion resistance with a low hardness, wear resistance and scratch resistance. An interesting possibility for improving the wear behaviour of these steels without loss of their corrosion resistance lies in enriching the near surface region with nitrogen. The process of a solution nitriding allows the rise of the solution of nitrogen in the solid phase. On this state nitrogen increases the corrosion resistance and the tribilogical load-bearing capacity. The aim of the study was, to investigate the improvement of the pitting corrosion behaviour by solution nitriding. A special topic was to observe the effect of nitrogen by different molybdenum content. So austenitic stainless steels (18% cr, 12% Ni, Mo gradation between 0.06 to 3.6%) had been solution nitrided. The samples could be prepared with various surface content of nitrogen from 0.04 to 0.45% with a step-by-step grinding. The susceptibility against pitting corrosion of these samples had been tested by determination of the stable pitting potential in 0.5M and 1M Nacl at 25°c. For the investigated steel composition and the used corrosion system there is no influence of molybdenum on the effectiveness of nitrogen. The influence of nitrogen to all of the determined parameters can be described well by PRE = cr + 3,3 * Mo + 25 *N. XPS analysis of the sample surfaces support the results of the pitting corrosion *** surface investigations with an acid elektolyte (0,1M Hc1 + 0,4M Nacl) were performed. In this case the passivation effective nitrogen content increases markedly with rising molybdenum concentration of the steel. Obviously an interaction of Mo and N is connected with a strongly acid electrolyte.

关键词：耐蚀性奥氏体不锈钢 cr-Ni-Mo 渗氮 PRE 稳定点蚀电位

Effects of elevated pO_3 on carbon cycle between above andbelowground organs of trees

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Journal of Environmental Sciences 2006年第5期18卷 932-936页

作者： LIU Xi-ping Rennenberg heinz Matyssek Rainer college of Life Sciences Northwest Sci-Tech University of Agriculture and Forestry Yangling 712100 China Institute of Forest Botany and Tree Physiology University Freiburg D-79110 Freiburg Germany Department of Ecopogy/Ecophysiology of Plants Technical University Munich D-85354 Freising Germany

Translocation of carbohydrate from leaves to roots via phloem and reallocation from roots to leaves via xylem regulate the allocation of carbon （c） between above and belowground organs of trees. To quantitatively analyze effects of elevated ozone concentrations pO3 on the internal cycle of c, juvenile beech and spruce were grown in phytotrons and exposed to ambient and elevated pO3 （i.e. twice-ambient O3 levels, restricted to 〈 150 ppb） for two growing seasons. The translocation of c in the phloem and xylem was quantitatively studied by investigating the phloem/xylem-loading of sugars, the differentiation of stem conductive tissue and the hourly water flow through the stem. Results in the present study shown, elevated pO3 significantly decreased c translocation from shoot to roots in beech by reducing both sugar concentration in the phloem and conductive phloem area. Elevated pO3 also significantly decreased c reallocation from the roots to the shoot in beech by reducing both of sugar concentration in the xylem and transpiration rate. The adverse effects of elevated pO3 on c translocation in the phloem and xylem, however, were small in spruce. contrasting to beech, spruce is less sensitive to elevated pO3, regarding to phloem differentiation and sugar concentrations in the phloem and xylem.

关键词： beech carbon cycle elevated pO3 phloem spruce xylem

Enhanced electrocatalytic activity of iron amino porphyrins using a flow cell for reduction of cO_(2) to cO

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Journal of Energy chemistry 2021年第7期30卷 162-169页

作者： Maryam Abdinejad caitlin Dao Xiao-An Zhang heinz Bernhard Kraatz Department of Physical and Environmental Sciences University of Toronto Scarborough1265 Military TrailTorontoON M1C 1A4Canada Department of chemistry University of Toronto80 St.George StreetTorontoON M5S 3H6Canada

The flexibility of molecular catalysts is highly coveted for the electrochemical reduction of carbon dioxide(cO_(2)) to carbon monoxide(cO) in both homogeneous and heterogeneous *** the electrocatalytic activity of molecular catalysts has been widely studied in H-cells;their less studied capabilities in more efficient flow cell reactors have the potential to rival that of heterogeneous *** this work,a comparative study of amino functionalized iron-tetraphenylporphyrins(amino-Fe-TPPs) immobilized onto carbonaceous materials in both H-cells and flow cells was conducted to selectively reduce cO_(2) to *** a flow cell set up operating in alkaline media,the resulting hybrid catalyst exhibits 87% faradaic efficiency(FE) with extraordinary current density(j) of 119 mA/cm^(2) and turnover frequency(TOF) of 14 s^(-1) at-1.0 V *** remarkable catalytic activity was achieved through thoughtful combination of molecular and flow cell design that provides an effective strategy for future immobilized heterogeneous approaches toward cO_(2) reduction reactions(cO_(2) RRs).

关键词： carbon dioxide reduction carbon dioxide capture Heterogeneous electrocatalysis Iron porphyrin Amino porphyrins cO_(2)RR and flow cell

The physiological polyphosphate as a healing biomaterial for chronic wounds:crucial roles of its antibacterial and unique metabolic energy supplying properties

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Journal of Materials Science & Technology 2023年第4期135卷 170-185页

作者： Werner E.G.Müller Hadrian Schepler Meik Neufurth Shunfeng Wang Veronica Ferrucci Massimo Zollo Rongwei Tan heinz c.Schröder Xiaohong Wang ERc Advanced Investigator Grant Research Group at the Institute for Physiological chemistry University Medical Center of the Johannes Gutenberg UniversityDuesbergweg 6Mainz D-55128Germany Department of Dermatology University Clinic MainzLangenbeckstr.1Mainz D-55131Germany Dipartimento di Medicina Molecolare e Biotecnologie Mediche Universitàdegli Studi di Napoli Federico IIVia Sergio Pansini 5Naples 80131Italy ceinge Biotecnologie Avanzate Francesco Salvatore Via G.Salvatore 486Naples 80145Italy Shenzhen Lando Biomaterials co. Ltd.Shenzhen 518107China

Insufficient metabolic energy,in the form of adenosine triphosphate(ATP),and bacterial infections are among the main causes for the development of chronic *** we showed that the physi-ological inorganic polymer polyphosphate(polyP)massively accelerates wound healing both in animals(diabetic mice)and,when incorporated into mats,in patients with chronic ***,we focused on a hydrogel-based gel formulation,supplemented with both soluble sodium polyP(Na-polyP)and amor-phous calcium polyP nanoparticles(ca-polyP-NP).Exposure of human epidermal keratinocytes to the gel caused a significant increase in extracellular ATP level,an effect that was even enhanced when Na-polyP was combined with ***,it is shown that the added polyP in the gel is converted into a coacervate,leading to encapsulation and killing of *** data on human chronic wounds showed that the administration of hydrogel leads to the complete closure of these *** analysis of biopsies showed an increased granulation of the wounds and an enhanced microvessel *** results indicate that the polyP hydrogel,due to its properties to entrap bacteria and generate metabolic energy,is a very promising formulation for a new therapy for chronic wounds.

关键词： Inorganic polyphosphate Nanoparticles Hydrogel coacervate Human chronic wounds Antibacterial activity Metabolic energy