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Tag: "biologists" at biology news

Research identifies protein that signals flowering in squash plants

...e nature of the florigenic signal has eluded plant biologists for over 70 years, owing to the difficulties attendant with the accurate detection and measurement of compounds in phloem sap, and designing experiments to allow accurate monitoring of long-distance transport of potential signalling compounds in plan...

Simulations unravel outer membrane transport mechanism

... studies had been inconclusive, however. Molecular biologists have difficulty studying systems that involve complex interactions between proteins, particularly when one domain moves into and out of a structure like a beta-barrel, said biochemistry professor Emad Tajkhorshid, principal investigator on the study....

Columbine flowers develop long nectar spurs in response to pollinators

...engths of the pollinators that drink their nectar, biologists have found. The researchers were Justen Whittall of the University of California at Davis and Scott Hodges of the University of California at Santa Barbara. They were funded by the National Science Foundation (NSF). Their results appear in this week...

The kapok connection -- Study explains rainforest similarities

...bers, the kapok tree now is upsetting an idea that biologists have clung to for decades: the notion that African and South American rainforests are similar because the continents were connected 96 million years ago. Research by University of Michigan evolutionary ecologist Christopher Dick and colleagues shows...

Prey not hard-wired to fear predators

...ay fear. That is a critical piece of knowledge as biologists and public agencies increase efforts to re-introduce large carnivores to places where they have been exterminated. Berger’s study is published in the latest issue of the journal Conservation Biology. The goal of re-introduction isn’t simply to sa...

'Personality-gene' makes songbirds curious

...ur, EEB), as follows. In one behavioural test, the biologists measured the time until a bird had visited four artificial "trees" (see figure 1) after being released in the observation room. In a second test, they quantified the reaction of the bird towards each of two unknown objects that had been put in its ca...

Global survey of lizards reveals greater abundance of animals on islands than on mainland ecosystems

...islands around the world has confirmed what island biologists and seafaring explorers have long observed: Animal...d to change. Details of the study conducted by biologists at the University of California, San Diego will appear in a paper slated for publication in the June...

How to steer a moving cell

...chemists, proteomics researchers and computational biologists who can integrate large data sets ?have applied a global approach to analyzing how proteins regulate cell movement." The research team’s profile of chemotactic cells is the first and most comprehensive catalog of proteins that exists to date, acco...

Iowa State scientists demonstrate first use of nanotechnology to enter plant cells

...micals inside cell walls. This would provide plant biologists with a window into intracellular events. The Io...s or engulfs a molecule that is outside of it. The biologists attempted to mimic that process by removing the wall of the plant cell (called making protoplasts),...

Study warns deep-sea mining may pose serious threat to fragile marine ecosystems

...ther and contaminate these communities, which some biologists argue may represent the origins of life on earth. "We need to act now to establish scientific and legal methods to protect these sensitive ecosystems and minimize the potential environmental impact of this industry," says lead author Jochen Halfa...

Latent memory of cells comes to life

...an interdisciplinary cooperation between molecular biologists and physicists and has just been published in the ...nt traits In the practical experiment molecular biologists used a mutant of a yeast cell which was bi-stable, in that it could become either of a single sex or...

Danish researches solve virus puzzle

... The research is a collaboration between molecular biologists and physicists. ”The molecular biologists have knowledge of how the cell functions and of the interplay between the intercellular parts, while...

City ants take the heat

... make their home alongside humans. Until recently, biologists had focused so much on the effects of global clima...s Center for Urban and Environmental Change, these biologists will soon determine whether urban warming has affected species in other major cities. "We will q...

York mathematician probes geometric route to combat viruses

... build up a group of mathematicians, computational biologists and biophysicists to address a portfolio of projects arising from these results.? This grant will enable Dr Twarock to expand her group and fund three postdoctoral positions and four PhD students. The group will collaborate closely with the Astbury...

MIT's ocean model captures diversity of underwater forests

...ocean systems in a way that is consistent with how biologists think of them-water filled with millions of diverse microbes that wax and wane in relative abundance through interactions with each other, and the environment, as dictated by natural selection," said Chisholm. Indeed the guiding principle of the n...

Bones in motion: Brown scientists to create new 3-D X-ray system

...edic experts Braden Fleming and Douglas Moore, and biologists Stephen Gatesy, Thomas Roberts and Sharon Swartz. Brainerd, a professor of medical science in Brown's Department of Ecology and Evolutionary Biology, leads the team. The grant from the W.M. Keck Foundation, paired with matching funds from Brown, w...

Lighting up life: Cold Spring Harbor Protocols presents tips for creating glowing plants

Just over a decade ago, biologists isolated a unique protein from jellyfish that coul.... This green fluorescent protein (GFP) has allowed biologists to make many new discoveries regarding how living cells function. But one kingdom of life—plants—has...

Tibetan antelope slowly recovering, WCS says

...er Aili Kang and a team of Tibetan and Han-Chinese biologists and field assistants, counted nearly 9,000 Tibetan antelope or chiru, more than expected. This may indicate an increase in some places for this endangered species, according to Schaller. At the same time, the team witnessed no direct evidence of th...

Researchers learn what sparks plant growth

...s, a member of the mustard family that is to plant biologists what the mouse is to mammalian geneticists. "How do organisms decide when to grow and when to stop growing? These questions are especially important in plants because they are rooted in the ground and must alter their shape and size in response to...

Brown cancer biologists identify major player in cell growth

...in disability or in diseases such as cancer. So biologists are keenly interested in identifying the accelerators that rev-up cell division. Ets transcription factors, a family of gene-regulating proteins that are major players in embryonic and cancer development, seemed obvious culprits. Rosmarin, a hematolo...

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