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Tag: "flower" at biology news

New RNA polymerase discovered in plants

...e known as micro RNAs, which are known to regulate flower development, but that proved wrong." In a series of genetic and biochemical tests , Pikaard and his collaborators discovered that Pol IV does not share in the duties of Pol I, II or III. But when the Pol IV subunits are knocked out, the most tightly...

The evolutionary triumph of flower power

...icinal flowers, most flowering plants grown in the flower industry today are not used for any purpose other than emotional satisfaction. "Our hypothesis is that flowers are exploiting an emotional niche. They make us happy," McGuire says. "Because they are a source of pleasure ?a positive emotion inducer ?...

Bumblebees copy one another when contending with unfamiliar flowers

...copied each other when they knew nothing about the flower species that they were visiting. When revisiting a flower species that they had tried before, they relied upon their own individual initiative. It's not yet ...

Analysis of flower genes reveals the fate of an ancient gene duplication

...us. Both genes are required for the development of flower reproductive structures, and when these genes are mutated, the plants form so-called double flowers, in which petals and sepals replace stamens and carpels. AG and PLE are very closely related genes, and they clearly have nearly identical function, ...

UCR biochemist goes to Washington with high-protein corn

...e of nutrients." Every corn kernel results from a flower on an ear of corn, Gallie explained. Initially the...ister flowers undergoes abortion, resulting in one flower for each kernel. Gallie's research group has developed technology that essentially rescues the abort...

Long-sought flower-inducing molecule found

...e all familiar with the fact that different plants flower at different times of the year. Daffodils in sprin.... It is absolutely vital for the plant survival to flower at exactly the right time to secure that it can pollinate, or be pollinated, by other plants of the ...

Scientists map one of biology's critical light-sensing structures

...ay and measure the length of daylight so that they flower in the correct season." By deducing the architectu... plants to grow under different climate regimes or flower at different times of the year, for example. Gaining precise control over flowering events, says Vi...

Bees solve complex colour puzzles

...re one million neurons, can learn to find a simple flower in a meadow, which no machine can do at present. Our lab has reconstructed our specially designed bee flight arena - known as the Bee Matrix - in the virtual world, where virtual autonomous bees are 'evolving' under exactly the same conditions as tho...

Natural selection at single gene demonstrated

...peared thousands of years ago enabled the plant to flower year-round, helping it out-compete other plants. Toomajian and his group showed that these two versions, also called gene variants, are too common to have spread solely by chance. "We've shown that for one gene with an important role in that [flowe...

Growing crops to cope with climate change

...l need types of wheat, barley and other crops that flower earlier, like Mediterranean varieties, to beat sum...at will thrive in the UK environment but will also flower earlier, coping with hotter summers. Dr Laurie commented, "Although our research has been on barle...

UF researchers develop ways to keep the bloom on the rose

...mental horticulturist has developed ways to extend flower quality and vase life by three or more days throug...o to three days by using properly mixed commercial flower foods. Using clean, sanitized containers will help to keep all cut flowers fresh longer. Additional...

Scientists discover dozens of new species in 'Lost World' of western New Guinea

...ries included what may be the largest rhododendron flower on record ?almost six inches across ?along with more than 20 new frogs and four new butterflies. Local Kwerba and Papasena people, customary landowners of the forest, welcomed the Conservation International team and served as guides and naturalists ...

Discovery may speed forest biotechnology

...uld be possible to genetically engineer trees that flower and reproduce more quickly. The long, slow growth ...ng approaches common with short-lived species that flower rapidly, such as corn and wheat, have been too slow to be practical." A remaining obstacle, Strauss...

Wild bees and the flowers they pollinate are disappearing together

...s are similar, and capable of pollinating the same flower species. However, this is not the case. The resear...ferent; insects which pollinate a limited range of flower species or which have specialised habitat needs were most often lost. Overall, a small number of com...

When the going gets tough, slime molds start synthesizing

... and stilbenes for use as sunscreens, antibiotics, flower pigments, and anti-oxidants. Explains Austin, "Plant polyketides are also increasingly recognized to have significant benefits in the human diet as health-promoting components of green tea, red wine, and soybeans." Turns out, DIF-1 belongs to the s...

Genetic snooze button governs timing of spring flowers

...tering the first year. The second year, the plants flower in the spring and die back in the fall. That bie...the fall, but you need to make darn sure you don't flower in the fall," Amasino says. In the case of biennials, "the plants can somehow measure how much cold ...

Massive duplication of genes may solve Darwin's 'abominable mystery' about flowering plants

...ily of transcription factors that are required for flower development, are known to have undergone an expansion through duplication that was critical to the evolution of angiosperm flowers. A whole-genome duplication explains the sudden emergence of novel traits better than a series of single-gene duplicat...

Scientists discover that ancient genes dictate flowering, fall bud set

...res many years of growth before a tree is ready to flower -- a delay that makes tree breeders impatient. Now...ed, also have CO and FT genes and can be forced to flower in months, rather than years. The discovery is being reported in Science magazine on-line (Science ...

Important gene controlling tree growth and development found

...elp of this gene poplar trees can be stimulated to flower after a few weeks instead of after the normal 10-... plants known ­ many trees do not form their first flower until they are 10-20 years old, sometimes even older! Trees also have the ability to cycle between g...

Researchers find that bumblebees' flower choice matters

...uses several innovative methods of tracking monkey flower mating, and all hinge on where the pollen comes fr...ough cross-pollination ?when pollen deposited on a flower is brought from a different plant of the same species, either from one pollen donor or many. When po...

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