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Tag: "leaves" at biology news

Research identifies protein that signals flowering in squash plants

...g substance, known as florigen, is produced in the leaves of a plant under inducing conditions, and then is transported through the phloem to the floral meristems, where it acts together with other factors to induce flowering. The precise nature of the florigenic signal has eluded plant biologists for over ...

Agent slows aging in mice

...lts in mice is advised to bulk up on creosote bush leaves as a way to defy old age. If NDGA pushes the aging envelope in the final results of this study, other labs will likely try to repeat the results in animals. Much more research is needed before any possible human anti-aging drug could emerge, Miller s...

Largest synthetic gene ever built offers insights into anti-malarial drug resistance

... as quinine, extracted from the cinchona tree, and leaves from the artemisinin shrub were the only options available to treat the infection until World War II, when both Germany and the United States started massive drug discovery programs based on the toll the parasite was having on soldiers − more U.S. ...

Pesticides choke pathway for nature to produce nitrogen for crops

...gume crop's natural need for nitrogen fixation but leaves a shortage of natural nitrogen in the soil for the next year's crop to utilize. Thus, she said, there is the need for yet more fertilizer. Other reasons, Fox said, have been poor soil quality due to overuse, which strips nutrients such as nitrogen...

Studies to find better ways to preserve human eggs, ovarian tissue under way

...d cervical, ovarian, breast or other cancers often leaves women infertile because systemic chemotherapy and more focused radiation therapy, designed to kill rapidly spreading cancer cells, also can destroy dynamic reproductive tissue. “I don’t think when you are faced with the reality that you may die, ...

Undergraduate research shows leaderless honeybee organizing

...sing the vibration signal when the queen flies and leaves the nest with the swarm. Piping, however, continues in the swarm, as the bees need to make the queen fly again once a new nest site has been selected. “Drew Pierce did this project last summer,” Schneider explained. “We constructed a special o...

CU study reveals why starling females cheat

...s work in raising the chicks, or in extreme cases, leaves her to raise the chicks on her own. But because superb starlings, a bird common to East Africa, are cooperative breeders, females have more incentive to stray, said Rubenstein, because even if she is caught cheating, she still may get help from other...

Ants show us how to make super-highways

...y uneven and full of ‘pot holes’ as it passes over leaves and branches on the forest floor. The study, by Dr Scott Powell and Professor Nigel Franks at the University of Bristol, and reported in the June issue of Animal Behaviour, shows that these living ‘plugs’ improve the quality of the surface. This i...

HIV and malaria combine to adversely affect pregnant women and their infants

...regnant women. "PAM can be a deadly condition that leaves mothers and their children particularly vulnerable," says Professor Kevin Kain, an infectious disease specialist and lead author of the study. "We set out to understand how women acquire protection against malaria during pregnancy and how HIV infecti...

New research shows sharks use their noses and bodies to locate smells

...ly wake behind a boat. A moving animal, similarly, leaves behind a trail of turbulent eddies flavored by its body odor," explained Atema. In an eight meter flume in the lab, Atema and Jayne Gardiner, a recently graduated Boston University Marine Program (BUMP) Masters student and study co-author, created t...

Alien plants attack using 'resource conservation' as weapon, researchers say

.... Using an electronic device that clamped onto the leaves of the plants, the scientists controlled the amoun...-use rates. Later, they ground up and analyzed the leaves in a laboratory to determine nutrient content. By calculating the ratio of resource use to the rate ...

8 plants from South Africa may hold potential for treating high blood pressure

... Tulbaghia violacea, a bulbous plant with hairless leaves often referred to as society or wild garlic Dried leaves from the plants were ground and used to prepare organic and acqueous extracts. Ten grams of ground p...

New Brandeis research sheds light on memory by erasing it

...t will be possible to determine whether the kinase leaves the synapse after inhibitor is applied. This provides a way to directly visualize the forgetting process and complements previous work done in Lisman's laboratory showing that when LTP is induced (as during learning), CaMKII moves into the synapse. ...

DNA repair proteins monitored at double-strand break

...s Nijmegen breakage syndrome, another disease that leaves its victims at high risk for cancer and higher sensitivity to DNA-damaging radiation. So this work has important medical implications for these and other diseases linked to disruption of double-strand break repair." The assay, developed by Elijah...

Scientists seek useful traits in wild cottons

...ing the characteristics of their roots, shoots and leaves and comparing them to a group of control cottons. ...resulting in yield loss by feeding on the emerging leaves of cotton seedlings. Those leaves nurture the plant while it is establishing roots and gaining stren...

Row over study puts Korea's scientific community under scrutiny again

...he Hwang scandal." Professor Kim's intervention leaves little doubt about how seriously the CHA group views the potential of the incident to damage its bid to inherit Hwang's crown, says Gornall. Before his fall from grace, Professor Hwang received the bulk of Korean government funding in stem cell resea...

Scientists find genes involved in the battle between Hessian flies and wheat

...y, red wormlike insects that nibble on the plant's leaves and can destroy crops worldwide, but the Hessian fly larvae that survive eventually evolve methods to overcome plant defenses. Purdue University and USDA-Agriculture Research Service scientists trying to thwart the insect have identified Hessian fly...

ConocoPhillips establishes $22.5M biofuels research program at Iowa State

...e made from fibrous biomass such as the stalks and leaves from corn plants and switchgrass. "I'm pleased Iowa State University and ConocoPhillips will partner to research and develop new technologies for producing biofuels," said Iowa Gov. Chet Culver. "These kind of public-private partnerships are an im...

Are one-third of costly implanted heart devices unnecessary? New study suggests yes

...e damage that weakens the heart's pumping ability, leaves patients prone to sudden cardiac death and therefore makes them candidates for an ICD. In recent years, ICDs have been shown to reduce the overall risk of sudden cardiac death well enough to be given approval by the Food and Drug Administration a...

Cancer-killing invention also harvests stem cells

...ow through the bloodstream to a remote organ, then leaves the bloodstream and forms a secondary tumor. This is how cancer spreads. He put these facts together with one more, very important fact: the selectins grab onto a specific carbohydrate on the surfaces of white blood cells, stem cells, and cancer c...

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