Articles with the keyword: 
Nitrogen Research Shows How Some Plants Invade, Take Over Others
sea-maid submitted, created time 1 year 2 months (www.sciencedaily.com)
Biologists know that when plants battle for space, often the actual battle is for getting the nitrogen. 
Sexual gene shuffling suppressed in plants
sea-maid submitted, created time 1 year 2 months (www.nature.com)
Asexual cell division could hold the key to a breakthrough in plant breeding.
How Plants Protect Us From Disease
sea-maid submitted, created time 1 year 4 months (www.sciencedaily.com)
Everyday foods, beverages, and spices contain healthful compounds that help us fight harmful inflammation. And, in doing that, these phytochemicals—the resveratrol in red wine or the catechins in green, white and black teas, for instance—may also reduce our risk of diseases associated with chronic inflammation, including cancer and diabetes.
Plant Biologists Discover Gene That Switches On "Essence of Male"
sea-maid submitted, created time 1 year 5 months (www.sciencedaily.com)
Biologists at the University of Leicester have published results of a new study into plant sex--and discovered that a particular gene switches on "the essence of male." The study takes to a new level understanding of the genes needed for successful plant reproduction and seed production.
Unlike animal cells, in which the female body nourishes the growing embryo, plant species require two sperm cells for fertilization--one provides genetic material and the other develops into the nutrient-rich endosperm.
Scientists grow diabetes drug in tobacco plants
sea-maid submitted, created time 1 year 5 months (www.reuters.com)
Scientists have found a healthy use for tobacco after breeding genetically modified plants containing interleukin 10, which could interfere with the progression of type 1 diabetes and other autoimmune conditions.
The process of growing medicines through genetically modified plants, called molecular farming, is projected to be cheaper than traditional factory methods. The article also quotes University of Verona scientist Mario Pezzotti as saying that they may also be cheaper than cell cultures--the current standard for antibody medicines
Researchers identify a process that regulates seed germination
piggy submitted, created time 1 year 5 months (news.uns.purdue.edu)
Purdue University researchers have determined a process that regulates activity of genes that control seed germination and seedling development.
Mike Hasegawa, the Bruno C. Moser Distinguished Professor of Horticulture and Landscape Architecture, and Kenji Miura, a former Purdue postdoctoral researcher and now an assistant professor at Tsukuba University in Japan, discovered the step involved in keeping seeds from germinating in adverse conditions such as freezing temperatures or drought, a factor in the survival of plant species.
Scientists Discover How Key Plant Hormone Is Triggered
sea-maid submitted, created time 1 year 6 months (www.sciencedaily.com)
Best known for its effects on fruit ripening and flower fading, the gaseous plant hormone ethylene shortens the shelf life of many fruits and plants by putting their physiology on fast-forward. In recent years, scientists learned a lot about the different components that transmit ethylene signals inside cells. But a central regulator of ethylene responses, a protein known as EIN2, resisted all their efforts.
Candy cane strategy sweetens life for goldenrods
annatto submitted, created time 1 year 8 months (www.sciencenews.org)
A recent study shows that plants can duck their heads--well, their tips--a bit like a bent candy cane. While this doesn't make them agile enough to literally dodge attackers, it does reduce the amount of damage that they can do.
Chemical from Medicinal Plants May Be Used to Fight HIV
piggy submitted, created time 1 year 9 months (www.sciencedaily.com)
Like other kinds of cells, immune cells lose the ability to divide as they age because a part of their chromosomes known as a telomere becomes progressively shorter with cell division. As a result, the cell changes in many ways, and its disease fighting ability is compromised.
But a new UCLA AIDS Institute study has found that a chemical from the Astragalus root, frequently used in Chinese herbal therapy, can prevent or slow this progressive telomere shortening, which could make it a key weapon in the fight against HIV
piggy submitted, created time 1 year 9 months (sciencenow.sciencemag.org)
A common European weed has turned its compact flower into an expansive, yellow-petalled blossom by borrowing a couple of genes from a close Italian relative. Researchers say the exchange is a rare documented example of beneficial genetic flow between species. It also challenges the notion that higher organisms must rely on their own genes to evolve.
The story starts three hundred years ago, when botanists introduced a yellow Sicilian flower called Senecio squalidus to Oxford, U.K. At the time, there was only one variety of a British weed known as the common groundsel (S
Plants' daily alarm clock discovered
sea-maid submitted, created time 1 year 11 months (www.newscientist.com)
A newly discovered family of genes acts as a plant's daily alarm, triggering a growth spurt just before dawn. By tweaking these genes, scientists may one day be able to engineer crops that grow for longer every day to produce bigger yields.
The timing of the growth spurt is known to be choreographed by the plant's circadian clock, which is reset by changes in light at dawn and dusk. The clock dictates when most physiological processes, such as the uptake of water and the breakdown of starch, happen throughout the day
Biotechnology: Can hydrogels solve our water problem?
Darkfrog submitted, created time 1 year 11 months (www.nature.com)
I remember reading BIll Bryson's description of a pre-blight American chestnut tree. When he came to the transpiration of water, he said, "imagine how much metal and noise humans would have to use to move that many gallons water."
Well artificial water transport just got a bit quieter, even if it can't match the chestnut just yet. A tiny microtree made from the same type of gel used to make contact lenses has mimicked water transport in plants. Scientists say that it could be used to extract water in dry places or make more efficient cooling systems
LlLIM1 mediates Ca and H regulation of actin dynamics in pollen tubes
kavin submitted, created time 2 years 3 months (www.ncbi.nlm.nih.gov)
The researchers explored the function of a lily (Lilium longiflorum) pollen-enriched LIM-domain-containing protein, LlLIM1, in regulating the actin dynamics in elongating pollen tube. Co-sedimentation assays revealed that the binding affinity of LlLIM1 to F-actin was simultaneously regulated both by pH and Ca(2+): LlLIM1 showed a preference for F-actin binding under low pH and low Ca(2+) concentration.
Involvement of CBF Transcription Factors in Winter Hardiness in Birch
kavin submitted, created time 2 years 3 months (www.ncbi.nlm.nih.gov)
Cold acclimation of plants involves extensive reprogramming of gene expression. And in the paper, the researchers suggest that in addition to their role in cold acclimation during the growing season birch CBFs appear to contribute to control of winter hardiness in birch.
Vincent submitted, created time 2 years 5 months (www.cell.com)
Plants grown at high densities perceive a decrease in the red to far-red (R:FR) ratio of incoming light, resulting from absorption of red light by canopy leaves and reflection of far-red light from neighboring plants. These changes in light quality trigger a series of responses known collectively as the shade avoidance syndrome. During shade avoidance, stems elongate at the expense of leaf and storage organ expansion, branching is inhibited, and flowering is accelerated
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