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Tag: "root" at biology news

A new plant-bacterial symbiotic mechanism promising for crop applications

...microorganism to penetrate inside the plant by the root hairs. The finding raises the question as to what signalling pathway Bradyrhizodium might use to gain entry to the plant and set off nodulation. The first observation was that the bacteria did not penetrate the roots of its host-plant by the h...

Pesticides choke pathway for nature to produce nitrogen for crops

...eceptors (NodD) inside rhizobia bacteria living in root nodules in the soil. Rotation legume crops such as...us from the soil, and to tillage, which interrupts root structures and disturbs the nitrogen-fixing bacteria when soil is turned. "Our research provides ...

Plants recognize their siblings, biologists discover

... share a pot with family they don’t increase their root growth. Because differences between groups of stra...siblings only occurred when they shared a pot, the root interactions may provide a cue for kin recognition.” Though they lack cognition and memory, the s...

Plastic that grows on trees

...ts trying to pull it off: Replace crude oil as the root source for plastic, fuels and scores of other industrial and household chemicals with inexpensive, nonpolluting renewable plant matter. Scientists took a giant step closer to the biorefinery this week, reporting in the June 15 issue of the journal...

Researchers demonstrate way to control tree height

...ed stress tolerance and have value where extensive root development is needed, such as in bioremediation of polluted soils or in very windy, limited soil moisture situations. From an environmental viewpoint, the researchers said, dwarfed trees such as this are unlikely to be any kind of threat to sprea...

Endosome-mediated signaling in plants

...wth response pathway, which affects both shoot and root growth. Dr. Chory is hopeful that these results “will serve as a springboard for future studies aimed at unraveling the mechanics of how plants grow."...

Puzzling plankton yield secrets to role in evolution/global photosynthesis

...rom the genus Ostreococcus emerge at the primitive root of the green plant lineage, dating back nearly 1.5 billion years. Today, these microscopic, free-living creatures, among the smallest eukaryotes ever characterized, barely a micron in diameter, contribute to a significant share of the world’s total ...

Corals -- More complex than you?

...ists are excited by it because corals are near the root of the family tree of all living animals and can throw new light on the origin of such complex features as the nervous and immune systems of vertebrates. Around 10 or 12 per cent of the known coral genes are in fact shared uniquely with vertebrate...

Genetic roots of bipolar disorder revealed by first genome-wide study of illness

...inase eta) that functions at a point closer to the root of the lithium-sensitive pathway than does the protein that lithium is thought to target. Scientists can now try to develop more effective medications by focusing on new compounds that act on the DGKH enzyme or regulate how much of the enzyme is pro...

How trees manage water in arid environments

... continually available from rain or snow, the tree root zones don't freeze, and there is enough sunlight for photosynthesis. The trees slow down during the pre-monsoon dry season in May and June when water is scarce, and then quickly respond to the sudden availability of water at the onset of the monsoon ...

World's largest flower evolved from family of much tinier blooms

...atural rubber, castor oil plants, and the tropical root crop cassava. The team from Harvard University, Southern Illinois University, the Smithsonian Institution, and the University of Wisconsin was led by Harvard's Charles C. Davis. "For nearly 200 years rafflesia's lineage has confounded plant scient...

FSU researchers determine a critical factor in workings of proteins

... of the protein to associate quickly, then, is the root cause of the condition." In their Structure paper, Zhou and graduate student Razmi Alsallaq put forth a new theory that has been proven to accurately predict the association rate for proteins by developing a theoretical model for the association p...

Researchers find 6,000-year-old fossil evidence

...grinding stones to grind corn, chili peppers and a root crop called manioc, and they probably combined these ingredients to make soups, stews and other dishes. Pearsall found evidence of this diet on grinding stones from four ancient households at Real Alto, leading her to conclude that these foods were e...

Army research mission focused on autism

...ves. We need effective treatments that address the root cause of the problems. With sleep and GI function operating optimally, many of the residual behaviors we see in children with autism decrease significantly." Reynolds speaks from experience. With biomedical and behavior intervention, her son is no...

Backache beaten by good vibrations?

...re recruiting people with backache caused by nerve root pain ?commonly known as sciatica ?in the first ever study to discover if therapeutic ultrasound can help their condition. Dr Christopher McCarthy and his team at the University's Centre for Rehabilitation Science need 30 volunteers aged 22-55 who ha...

Heart smart: new drug improves blood flow

...ses," he says. "In up to 95 per cent of cases, the root causes of vascular diseases are still unknown. So clinicians have to rely on 'lifestyle' indicators and 'risk factors' such as high blood pressure and high cholesterol. "However, not all people with high blood pressure or high cholesterol experienc...

A new target for painkillers

...issues, including white blood cells and the dorsal root ganglia ?a group of nerve cells near the spine and involved in pain transmission. The new study showed alpha9alpha10 nicotinic receptors provide a previously unknown route to pain relief. McIntosh says a patent is pending on this new mechanism. ...

Dragonfly's metabolic disease provides clues about human obesity

...estines may provide a greater understanding of the root causes of human metabolic dysfunction. James Ma...lism may hold clues for scientists looking for the root causes of metabolic diseases in humans, according to Marden and Schilder's paper "All of these sy...

Study provides first look at the 'birth' of a retina cell

...nd in humans. Damage to photoreceptors is at the root of eye diseases such as diabetic retinopathy, retinitis pigmentosa, and macular degeneration. In most instances, including age-related macular degeneration, rod photoreceptors die before cones. As the mouse eye develops, rods start out as stem cells...

Salk scientists get to the root of plant cell fate

...plants with a defective TOPLESS gene form an extra root where the shoot should be. Their findings, publish...icultural needs. "If we know how a plant forms a root instead of a shoot, and that there is time in which to make such an important change, it might be po...

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