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Tag: "plant" at biology news

New moth variety disarms plants guarded by selenium

...s showed that the selenium in the hyperaccumulator plant species known as prince's plume (Stanleya pinnata)...estock. In addition, the selenium-hyperaccumulator plant may also be useful for removing and dispersing selenium from polluted water and soil. The authors no...

Bitter taste identifies poisons in foods

... in the natural setting of the fruit and vegetable plant matrix," said senior author Paul Breslin, a Monell sensory scientist. Glucosinolates act as anti-thyroid compounds. The thyroid converts iodine into thyroid hormones, which are essential for protein synthesis and regulation of the body's metabolis...

A new male-specific gene in algae unveils an origin of male and female

...rate male and female sexes exhibited by animal and plant species is based in part on the anatomically and genetically distinct gametes, sperm and egg, produced by members of each sex. But the evolutionary origin of oogamy—reproduction though joining of distinct sperm and egg cells—is in fact poorly underst...

Too mellow for our predatory world

...agos Islands; they also introduce alien animal and plant species which are causing great damage to local fl... the necessary protection of the unique animal and plant world of the Galápagos....

China's environmental challenges

...ntainous regions still host a surprising number of plant and animals species. Zhiyao Tang (Peking University) and fellow researchers identified ten hotspot regions in China's major mountain ranges they say should be priorities for the country's conservation plans. One of the review articles in the iss...

New biochip helps study living cells, may speed drug development

...th high nitrogen-use efficiency -- thus making the plant need less nitrogen fertilizer -- you could transfo...avity. The experiment analyzed gravity's effect on plant development, trying to solve the riddle of how a plant determines which way is "up." "We conducte...

Most widely used organic pesticide requires help to kill

...nstitute Professor in the UW-Madison department of plant pathology. The new work, conducted in the laboratories of Handelsman and Kenneth F. Raffa, a professor in the UW-Madison department of entomology, demonstrates that Bt requires the presence of other bacteria to exert its lethal influence. Virtual...

A human taste for rarity spells disaster for endangered species

...led the Allee effect, in which individuals of many plant and animal species suffer reduced fitness at low population densities, which increases their extinction risk. The authors' model now shows that humans can trigger an "anthropogenic Allee effect" in rare species through a paradox of value. When rarity...

Mayo Clinic collaboration mining of ancient herbal text leads to potential new anti-bacterial drug

...f Pacific Island cultures by testing a therapeutic plant extract described in a 17th century Dutch herbal text for its anti-bacterial properties. Early results show that extracts from the Atun tree effectively control bacteria that can cause diarrhea, as claimed by naturalist Georg Eberhard Rumpf, circa 16...

Ground spider diversity studied in research project

...ommitment to inventory the park, which has diverse plant and animal populations, for changes in habitat, she said. The park has areas for hiking, bird watching and horseback riding, and is one of the areas that has Navasota Ladies'-Tresses, an endangered orchid. More information on the park can be found at...

Recycled paper and compost could both be key tools to control plant disease

...paper and organic waste composts. The University's plant research department, Warwick HRI, is finding that ... be a major weapon in the fight against a range of plant diseases. A University of Warwick research team under Professor Ralph Noble has recently shown tha...

Cougar predation key to ecosystem health

...r cougar, could affect such a broad range of other plant and animal species. But the evidence is now accumulating that primary predators not only have direct effects in influencing the population sizes of native grazing animals such as deer and elk ?they also have indirect effects in changing their foragin...

Plants' role in global warming re-examined

Estimates of increased plant respiration in response to higher global temperatu...tanding of multiple interacting factors, including plant respiration. "The fact is that plants adapt to higher temperatures and their levels of respiration ...

Found -- the apple gene for red

...le skin is the result of anthocyanins, the natural plant compounds responsible for blue and red colours in ...edge about how apple colour is regulated will give plant breeders the opportunity to use these molecular marker tests to speed up apple breeding and select f...

Biotech cotton provides same yield with fewer pesticides

...ticides and maintain insect biodiversity when they plant the biotech cotton known as Bt cotton, according t...hitefly (Bemisia tabaci) and the western tarnished plant bug (Lygus hesperus), growers use broad-spectrum insecticides and other types of insecticides known ...

UCSD study reveals how plants respond to elevated carbon dioxide

...mospheric carbon dioxide leads to changes within a plant cell that trigger the closing of the stomata--the ...ions, increased carbon dioxide does not accelerate plant growth. Previous research has also shown that the doubling of atmospheric carbon dioxide expected to...

UGA scientists engineer root-knot nematode resistance

...d by one of the world's most destructive groups of plant pathogens. Root-knot nematodes are the most econo...said Hussey, a distinguished research professor in plant pathology at the UGA College of Agricultural and Environmental Sciences. They attack nearly every f...

Parasitic plants sniff out hosts

...s respond to their environment, and have looked at plant insect interactions," says Dr. Consuelo M. De Mora...ta pentagona, field dodder or five angle dodder, a plant that infests a variety of crops including tomatoes, carrots, onions, citrus trees, cranberries and a...

Researchers find that bumblebees' flower choice matters

...the behaviors of bees as they gather pollen ?which plant species the bees forage on, which flowers they pro...ng on to another plant. In doing so, the bees make plant reproduction possible by dispersing pollen. But why go to such lengths to map the flight of the bu...

Genetic 'roadmap' charts links between drugs and human disease

...erge from the Connectivity Map involves gedunin, a plant derivative that, despite a long history of medicinal use, is not well understood molecularly. The researchers identified gedunin in a high-throughput chemical screen for molecules that disrupt hormone signals in prostate cancer cells and then used th...

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