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"Erbgutmanipulation ist keine Erfindung der Gentechnik Agrobacterium tumefaciens Nach erfolgreicher Übertragung bildet sich ein transgenes Zellmaterial, aus dem die Gentechniker durch aufwendige Labormethoden anschließend vollständige Pflanzen generieren können. Sie tragen dann in allen ihren Zellen das transferierte Erbgut. Bisher ging man davon aus, dass genau das bei der natürlichen Genmanipulation der Agrobakterien an ihren Wirtspflanzen nicht passiert. Die Bakteriengene bleiben normalerweise in den Zellen des Befallsorts und werden nicht an die nächste Generation der Wirtspflanze weitergegeben. AdTech Ad Doch die aktuellen Ergebnisse der Forscher um Tina Kyndt von der Universität Ghent belegen, dass es in der Entwicklungsgeschichte der Süßkartoffel offenbar doch zu einem permanenten Einbau der Bakteriengene gekommen ist: Die Forscher fanden im Erbgut der verschiedenen Kulturformen der Süßkartoffel (Ipomoea batatas) sowie in einigen ihrer Wildformen genetisches Material von Agrobakterien"

"Ich weiß wie schwer es ist, gewohnte Strukturen zu verändern und nachhaltig zu leben. Ich kämpfe selbst täglich mit meinem inneren Schweinehund. Ich möchte die Zukunft meiner Kinder nicht dem allgemeinen Desinteresse opfern. Wir sind an einem Punkt angelangt, an dem wir handeln müssen, und zwar jeder einzelne von uns. Wir sind in der Pflicht, nicht die anderen"

"This is a collection of dinosaur pictures compiled from all over the internet. Look at a random dinosaur, pick one from below, or check out our globe of ancient Earth!"

"The Open Tree of Life project (OpenTree) is enabling a community-assembled tree of life by synthesizing the wealth of phylogenetic data published / being published by the scientific community and providing the means to update and refine the draft tree."

"Tatsächlich zeigte sich der Wirkstoff im Praxistest mit fettleibigen Mäusen als äußerst effektiv: Innerhalb von nur einer Woche reduzierten die mit Celastrol behandelten Mäuse ihre Nahrungsaufnahme um etwa 80 Prozent im Vergleich zu den nicht therapierten. Am Ende der dritten Woche hatten die behandelten Tiere im Schnitt 45 Prozent ihres ursprünglichen Körpergewichts verloren - und zwar fast ausschließlich durch die Verbrennung von Fettreserven."

ScienceDaily (June 2, 2010) - Using high-throughput sequencing to map the locations of a common type of jumping gene within a person's entire genome, researchers at the University of Pennsylvania School of Medicine found extensive variation in these locations among the individuals they studied, further underscoring the role of these errant genes in maintaining genetic diversity.

We belong to a remarkably quirky species. Despite our best efforts, some of our strangest foibles still defy explanation. But as science probes deeper into these eccentricities, it is becoming clear that behaviours and attributes that seem frivolous at first glance often go to the heart of what it means to be human.

(PhysOrg.com) -- The fact that our female ancestors dispersed more than our male ancestors can lead to conflicts within the brain that influence our social behaviour, new research reveals.

Large Hadron Collider investigative journalism

A massive analysis of almost every bacterial genome sequenced to date suggests a new shape for the tree of life. digg_url

Looking almost 11 billion years into the past, astronomers have measured the motions of stars for the first time in a very distant galaxy and clocked speeds upwards of one million miles per hour, about twice the speed of our Sun through the Milky Way. The fast-moving stars shed new light on how these distant galaxies, which are a fraction the size of our Milky Way, may have evolved into the full-grown galaxies seen around us today. The results will be published in the August 6, 2009 issue of the journal Nature, with a companion paper in the Astrophysical Journal.

It's that time of the month again. Yes: it's time for Life-form of the Month. In case you've forgotten, this coming Saturday is International Day for Biological Diversity, a day of celebrations and parties to appreciate the other occupants of the planet. So if you do nothing else this weekend, drink a toast to "Other Life-forms!" In honor of this event, my nomination for Life-form of the Month: May is a group of abundant and fascinating beings that are undeservedly obscure: the archaea.

"Israeli archaeologists have discovered human remains dating from 400,000 years ago, challenging conventional wisdom that Homo sapiens originated in Africa, the leader of excavations in Israel said on Tuesday."

A series of fossils unearthed in southwestern China has revealed the origins of complex life in unprecedented detail, and pushed its beginning back by at least 40 million years. The specimens come from the Doushantuo formation, a layer of sediments deposited about 590 million years ago, just before the Ediacaran period's primordial fauna gave way to the kaleidoscopically complex creatures of the Cambrian explosion.

Just days after NASA released the first cosmic dreamscapes taken by the newly refurbished Hubble Space Telescope three teams of astronomers have used the rejuvenated observatory to find what appears to be a bounty of the most distant galaxies known.

The current release allows you to explore globally the geographic distributions for any terrestrial vertebrate species.