The first genetic instruction manual of a diatom, from a family of microscopic ocean algae that are among the Earths most prolific carbon dioxide assimilators, has yielded important insights on how the creature uses nitrogen, fats, and silica to thrive.
The diatom DNA sequencing project, funded by the U.S. Department of Energy (DOE) and conducted at the DOE Joint Genome Institute, provides insight into how the diatom species Thalassiosira pseudonana prospers in the marine environment while it contributes to absorbing the major greenhouse gas CO2,in amounts comparable to all the worlds tropical rain forests combined. "This critical information enables us to better understand the vital role that diatoms and other phytoplankton play in mediating global warming," says Dan Rokhsar, who heads computational genomics at the JGI and is one of the co-authors of a research article in the Oct. 1 issue of Science. "Now that we have a glimpse at the inner workings of diatoms, were better positioned to understand how changes in their population numbers will translate into environmental changes and the global carbon management picture."
"These organisms are incredibly important in the global carbon cycle," says Virginia Armbrust, a University of Washington associate professor of oceanography and lead author of the Science paper. Together, the single-celled organisms generate as much as 40 percent of the 50 billion to 55 billion tons of organic carbon produced each year in the sea and in the process use carbon dioxide and produce oxygen. And they are an important food source for many other marine organisms.
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Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...
The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.
The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...
Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...
Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".
Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...
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