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Tag: "competing" at biology news

Plants, too, have ways to manage freeloaders

... "The most effective strain is not always best at competing for nodules," Simms said. "Is it the plant or the microbe that determines this? Have we bred out of crop plants the ability to choose their root bacteria?" ...

How Fruitflies Know It's Time for Lunch

...st flies be to overcome taste aversion? How do the competing neural networks of taste and hunger signals decide whether the fly will eat? Future studies pairing behavioral and genetic analysis may begin to reveal answers to these open questions. ...

Why Christmas trees are not extinct

...d that should be a severe handicap for conifers in competing against flowering trees for water. Yet conifers thrive, and they dominate forests in many regions of Earth. Hacke says the planet's tallest trees are conifers: redwoods and sequoias. So are the oldest trees, bristlecone pines. So how did conifers o...

Center releases new public survey on stem cells

...erall attitudes toward ESC research to explore the competing values that underlie them. Survey respondents were asked a series of questions designed to ascertain the value placed on progress in ESC research and protecting early human embryos. The survey revealed a subtle topography of the public's attitudes ...

Study provides insight into cellular defenses against genetic mutation

...ed proteins that can sabotage natural processes by competing for spots usually held by their full-length counterparts, or by simply not working. In recent years, researchers at the University of Rochester Medical Center have revealed the existence of a natural surveillance system that determines which mRNAs ...

DDT-resistant insects have additional genetic advantage that helps resistance spread

...h a genetic disadvantage that would stop them from competing with non-resistant insects once farmers stop using that pesticide. Instead, researchers now believe that fruit flies that develop resistance to DDT gain a two-fold advantage: not only can they survive being sprayed with pesticide, which other insect...

Prozac for future Plants on Mars

...g at how plants determine who is a competitor when competing with other roots for limited resources," says Dr. ...was, do plants recognize their own roots and avoid competing with them and how do they do this? Working with common garden peas, Falik worked with Dr. Ariel Novo...

Plants discriminate between self and non self

...g at how plants determine who is a competitor when competing with other roots for limited resources," says Dr. ...was, do plants recognize their own roots and avoid competing with them and how do they do this? Working with common garden peas, Falik worked with Dr. Ariel Novo...

Ants, not evil spirits, create devil's gardens in the Amazon rainforest, study finds

.... hirsuta trees release toxic secretions that kill competing plants--a process botanists call allelopathy. Others argue that devil's garden ants are responsible for controlling vegetation, either by extensive pruning or poisoning. "The idea is that by killing other plants, the insects create a space for young ...

Elderly mice yield clues to the process of growing old

...ptosis or programmed cell death underpins aging. A competing theory holds that oxidative stress -- the body's reaction to oxygen and the production of reactive, cell-damaging molecules known as free radicals -- is responsible for the aging process. According to the new Science report, markers of oxidative str...

Say what? Bacterial conversation stoppers

...ocess could have consequences in niches containing competing species of bacteria or in niches where bacteria associate with humans," Bassler said. "In the gut, you can imagine how the normal microflora might interfere with cell-cell communication to thwart bacterial invaders." Using a chemical communication ...

Health costs soar as 60 million Americans classed as obese

...annot co-exist simultaneously, the balance between competing RNA and DNA structures is controlled by the concentration of magnesium ions, Silverman said. In work not yet published, the researchers have also shown that the effects of the DNA constraint on the RNA structure can be modulated by external stimuli ...

UN successfully tests 'green' pesticide against locusts

...annot co-exist simultaneously, the balance between competing RNA and DNA structures is controlled by the concentration of magnesium ions, Silverman said. In work not yet published, the researchers have also shown that the effects of the DNA constraint on the RNA structure can be modulated by external stimuli ...

DNA constraints control structure of attached macromolecules

...annot co-exist simultaneously, the balance between competing RNA and DNA structures is controlled by the concentration of magnesium ions, Silverman said. In work not yet published, the researchers have also shown that the effects of the DNA constraint on the RNA structure can be modulated by external stimuli ...

Lipids get new comprehensive classification system

...-IUBMB rules closely and should not be viewed as a competing format," emphasizes Dr. Fahy. "The main differences involve clarification of the use of core structures to simplify systematic naming of some of the more complex lipids, provision of systematic names for recently discovered lipid classes, and clarifi...

Chemical Engineer Kao Explores Antibiotic Synthesis With DNA Chips

...uce antibiotics to inhibit other bacterial strains competing for resources. Pharmaceutical companies exploit this property to manufacture drugs, but the process of cultivating bacteria is slow and costly. By hijacking molecular synthesis with the latest advances in biotechnology--and inducing bacteria to overp...

UCLA study assesses cost-effectiveness of Hepatitis B drugs

... analysis comparing the cost-effectiveness of five competing drug treatment strategies for chronic hepatitis B: 1) No treatment at all 2) Interferon alone 3) Lamivudine alone 4) Adefovir alone 5) Beginning therapy with lamivudine, but changing to adefovir if viral resistance is encountered. Investigators foun...

New design : complete

...ndividualized fluid-replacement consumption by all competing athletes. "Researchers of the study found a surpr...ement schedules be individualized for all athletes competing in long-distance events should be taken seriously by all competitors." People lose water and salts ...

Bush, Cheney and Rumsfeld are now species of slime-mold beetles -- but strictly in homage

...ndividualized fluid-replacement consumption by all competing athletes. "Researchers of the study found a surpr...ement schedules be individualized for all athletes competing in long-distance events should be taken seriously by all competitors." People lose water and salts ...

Too much water may be as dangerous as too little during long-distance athletic events

...ndividualized fluid-replacement consumption by all competing athletes. "Researchers of the study found a surpr...ement schedules be individualized for all athletes competing in long-distance events should be taken seriously by all competitors." People lose water and salts ...

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