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Scientists announce in the current issue of the journal Nature their discovery that plants respond to environmental stresses with a sequence of molecular signals known in humans and other mammals as the “G-protein signaling pathway,” revealing that this signaling strategy has long been conserved throughout evolution. Because a large percentage of all the drugs approved for use in humans target the G-protein signaling pathway, the team’s findings could also be used in the search for plant compounds t
All gardeners know that their plants have to compete against insects and weeds. We apply insecticides to protect plants from the munching hordes, and we apply herbicides, or hoe, to protect plants from weeds. But, according to Stan Finch and Rosemary Collier of Horticulture Research International, Wellesbourne, the latter is a bad move that actually helps insects to find our crop plants.
Writing in the June issue of Biologist, Finch and Collier provide evidence that specialist insects, those
For decades, scientists have disagreed about the way the brain gathers memories, developing two apparently contradictory concepts. But newly published research by a team of scientists at Rutgers-Newark’s Center for Molecular and Behavioral Neuroscience (CMBN) indicates that both models of memory may be partially correct – and that resolving this conflict could lead to new approaches for the treatment of memory disorders such as Alzheimer’s Disease.
The dispute has centered on how
In recent years, the solution to the problem of diseased or damaged organs has been to replace the old with the new. By taking tissue from either a patient or a donor, surgeons have transplanted this to the damaged area and given many people a new lease of life.
The method is not without limitations, however. Issues such as the availability of donor organs and the need to use drugs to prevent the immune system rejecting the “foreign” tissue have prompted research into alternative ways to d
A NASA-Department of Energy jointly funded study concludes the Earth has been greening over the past 20 years. As climate changed, plants found it easier to grow.
The globally comprehensive, multi-discipline study appears in this week’s Science magazine. The article states climate changes have provided extra doses of water, heat and sunlight in areas where one or more of those ingredients may have been lacking. Plants flourished in places where climatic conditions previously limited gro
The first overview analysis of a year’s worth of high-resolution infrared data gathered by the Thermal Emission Imaging System (THEMIS) on NASA’s Mars Odyssey spacecraft is opening Mars to a new kind of detailed geological analysis and revealing a dynamic planet that has experienced dramatic environmental change.
The report by THEMIS’s science team will appear in an upcoming issue of Science and will be released on June 5 in the magazine’s online preview, Science Express.
“THEMIS