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Signal zur Einleitung der Schädlingsabwehr ist in Pflanzen doppelt gesichert

By Guest PostMay 18, 2015Sciencearabidopsis, arabidopsis thaliana, chemtrails, der coronavirus, dhab lizard, die mondlandung, ekkehard peik, foodie destinations, hedp, marianna safronova, matthias sutter, new physics effects, nuclear clock, parmesan cheese, peter thirolf, saudi arabian food, spanish cuisine, synergy grant, synthesis, the barbecue nation, thorsten schumm, universitaet tuebingen, verschwoerungstheorie, wagashi

Tübinger Forschergruppe entdeckt ein bei Pflanzen bisher unbekanntes Signalmolekül und klärt seine Funktion bei der Immunantwort auf

Wird eine Pflanze von Fressfeinden wie zum Beispiel Schmetterlingsraupen angegriffen oder von Pilzen, die ihr absterbendes Gewebe verdauen, so schaltet sich ihre Immunabwehr ein. Die Pflanze bildet nach der Verwundung eine aktive Form des Hormons Jasmonsäure, die für die Freisetzung von Hemm- und Abwehrstoffen sorgt. Diese sollen die Schädlinge vom Fressen abhalten oder ihre Entwicklung negativ beeinflussen. Nun hat eine internationale Forschergruppe um Dr. Gabriel Schaaf vom Zentrum für Molekularbiologie der Pflanzen (ZMBP) der Universität Tübingen herausgefunden, dass aktive Jasmonsäure allein nicht tätig werden kann. Sie benötigt bei der Schädlingsabwehr eine Substanz aus der Gruppe der Inositolpyrophosphate als Partner. Die Forscher haben den molekularen Mechanismus des Zusammenwirkens der Signalstoffe aufgeklärt. Ihre Ergebnisse wurden kürzlich vom Fachjournal Plant Cell vorab online veröffentlicht.
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Ancient Minerals: Which Gave Rise to Life?

By Guest PostDecember 9, 2013Scienceancient minerals, beryllium, clay minerals, curiosity rover, earth surface, hadean eon, hadean mineralogy, hydrothermal areas, life, lithium, magnesium silicate forsterite, mars today, metabolic energy, molecular building blocks, molybdenum, most abundant minerals, paleomineralogy, rare elements, rise to life, robert downs, robert hazen, ruff project, scientific models, synthesis, university of arizona

Washington, D.C.— Life originated as a result of natural processes that exploited early Earth’s raw materials. Scientific models of life’s origins almost always look to minerals for such essential tasks as the synthesis of life’s molecular building blocks or the supply of metabolic energy. But this assumes that the mineral species found on Earth today are much the same as they were during Earth’s first 550 million years—the Hadean Eon—when life emerged. A new analysis of Hadean mineralogy challenges that assumption. It is published in American Journal of Science.

Carnegie’s Robert Hazen compiled a list of every plausible mineral species on the Hadean Earth and concludes that no more than 420 different minerals—about 8 percent of the nearly 5,000 species found on Earth today—would have been present at or near Earth’s surface. (more…)

Engineering Bacterial Live Wires

By Guest PostMarch 13, 2013Sciencebacterial species, berkeley lab, bioelectronic systems, biological wire, caroline ajo franklin, cell membranes, cheryl goldbeck, common language, e coli, electron, electronic communication systems, energy, energy conversion techniques, guillaume cambray, heather jensen, information transfer, largus angenent, living cell, matt hepler, metabolic pathways, michaela teravest, molecular foundry, mr 1, mtrcab pathway, nanocrystalline iron oxide, nicole beedle, protein complex, shewanella oneidensis, strain, synthesis, university of california, vivek mutalik, yancey appling

Berkeley Lab scientists discover the balance that allows electricity to flow between cells and electronics

Just like electronics, living cells use electrons for energy and information transfer. Despite electrons being a common “language” of the living and electronic worlds, living cells cannot speak to our largely technological realm. Cell membranes are largely to blame for this inability to plug cells into our computers: they form a greasy barrier that tightly controls charge balance in a cell. Thus, giving a cell the ability to communicate directly with an electrode would lead to enormous opportunities in the development of new energy conversion techniques, fuel production, biological reporters, or new forms of bioelectronic systems. (more…)

Yale Center for British Art to partner with Google on expanded Art Project

By Guest PostApril 4, 2012Culture, Technologyamy meyers, art, art project, british art, connecticut, george stubbs, Google, google art project, john frederick herring, joshua reynolds, museum, synthesis, Technology, the harvest, thomas gainsborough, thomas rowlandson, united kingdom, united states, william hogarth, yale center

The Yale Center for British Art is partnering with the Google Art Project to share the museum’s renowned collections with viewers around the world. The collaboration is part of a major global expansion of the pioneering Art Project, which now consists of 151 partners in 40 countries.

The Yale Center for British Art — which houses the largest collection of British art outside the United Kingdom — is one of only six university museums in the world to collaborate with Google. It is one of only 29 institutions in the United States and is the only museum in Connecticut to participate. (more…)

UCLA Researchers Identify Peptide That Inhibits Replication of Hepatitis C Virus

By Guest PostFebruary 8, 2012Scienceantiviral, block replication, cell permeable peptide, cellular factor, cellular protein, heat shock proteins, hepatitis, hepatitis c therapy, hepatitis c virus, hsps, interferon, mass spectrometry, natural compound, non structural protein 5a, ns5a, peptide, protein, quercetin, ribavirin, samuel french, synthesis, tissue culture, viral replication, viral translation level, virus infection

Researchers from UCLA’s Jonsson Comprehensive Cancer Center have identified a cell-permeable peptide that inhibits a hepatitis C virus protein and blocks the viral replication that can lead to liver cancer and cirrhosis.

The finding by Dr. Samuel French, a UCLA assistant professor of pathology and senior author of the research, builds on previous work by French’s laboratory that identified two cellular proteins that are important factors in hepatitis C virus infection. (more…)

Study Improves Understanding of Method for Creating Multi-Metal Nanoparticles

By Guest PostDecember 18, 2010Sciencealloy nanoparticles, atoms, chemical reactions, core, digestive ripening, electric field of light, environmental applications, gold, gold core, gold silver alloy, industrial, joe tracy, multi component metal nanoparticles, nanoparticles, optical properties, security technology, shell nanoparticles, silver, silver shell, single metal nanoparticles, synthesis, technique, tunable properties, two metals

A new study from researchers at North Carolina State University sheds light on how a technique that is commonly used for making single-metal nanoparticles can be extended to create nanoparticles consisting of two metals – and that have tunable properties. The study also provides insight into the optical properties of some of these nanoparticles.

Tuning the optical properties of nanoparticles is of interest for applications such as security technology, and for use in making chemical reactions more efficient – which has multiple industrial and environmental applications. (more…)

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