Biologists at the University of California, San Diego have discovered that Bacillus thuringiensis, or Bt — a bacterium that produces natural protein insecticides that have been used by organic farmers for five decades — can also produce similar natural proteins that kill nematodes.
Photos of rat parasitic nematode, N. brasiliensis, before and after (at right, sick, small worms) application of Bt toxin Cry21A
The discovery could pave the way for the development of an inexpensive and environmentally safe means of controlling the parasitic roundworms that each year destroy billions of dollars in crops, cause debilitating diseases in farm animals and pets, and now infect a quarter of the world’s human population. The scientists’ findings appear in the March 4 issue of the Proceedings of the National Academy of Sciences, which is making their paper available this week in its early online edition.
Major parasitic roundworm diseases in humans include ascariasis, which affects 1.5 billion people worldwide; hookworm, which infects 1.3 billion people; and elephantiasis, which affects 120 million people. Other parasitic nematodes are major agricultural pests, affecting such economically important crops as corn, soybeans, potatoes and tomatoes. They are also a problem in horses, livestock and pets.
Kim McDonald | UCSD News
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Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.
Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
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