Articles with the keyword: 
Are vertical farms the next necessary step in agriculture?
Darkfrog submitted, created time 5 days 16 hours (www.sciam.com)
Scientific American here highlights urban farming. The idea is that we spend all this time, water and energy not only growing and fertilizing plants the old-fashioned way but then transporting the food products all the way from the farms to the cities, where most of the people live and where--by 2050, a whole lot more people are going to live.
The article describes growing fruits and vegetables inside tall glass buildings like some kind of modern-day hanging gardens (I wonder if they give +2 happy faces like in Civilization). We've got construction and glassmaking technology 
Plants' daily alarm clock discovered
sea-maid submitted, created time 2 weeks 5 days (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
"Magnetic cows" are visible from space
sea-maid submitted, created time 1 month 1 week (www.nature.com)
Despite thousands of years of coexistence, exploitation and cheese, humanity seems to have missed an intriguing fact about cows: they like to point north. Or possibly south. After some exploration, it was found that other animals, such as deer, do this too.
Researchers have explored the matter and found that the ruminants are aligning themselves to magnetic north, not true north. In other words, this is about the magnetic field, not maximizing heat from the sun or getting out of the wind.
jerry submitted, created time 2 months 2 weeks (www.current-biology.com)
The biologist Paul Ehrlich came to public attention in 1968 with the publication of his book, The Population Bomb. Worries about the potential problems of a soaring global population had boiled and cooled over previous decades. And the issue had become so enmeshed with political decisions that many just wished to ignore it. The warnings of Thomas Malthus, the eighteenth-century writer who had had such influence on many thinkers on the problems of uncontrolled population growth, had slipped into the background
Arsenic and Paddy Rice: A Neglected Cancer Risk?
sea-maid submitted, created time 2 months 3 weeks (www.sciencemag.org)
Can eating rice increase the risk of cancer? That question arises from three sets of findings that report elevated arsenic levels in rice and products such as rice bran and rice crackers.
The bright side of biofuels isn't so bright
Darkfrog submitted, created time 2 months 3 weeks (sciencenow.sciencemag.org)
The argument in favor of biofuels--petroleum-replacement fuels made from plants like corn, soybeans and switchgrass--is that while burning oil releases new carbon into the air, burning biofuels would release only the carbon that the plants had absorbed from the air during their growth cycle. The net effect would be zero.
However, if one looks at the big picture, biofuels lose their luster. Not only has the conversion of food farms to fuel farms driven up food prices worldwide, but in the tropics, farmers are cutting down carbon-absorbing forests for corn plantations
Mars soil capable of sustaining plant life
sea-maid submitted, created time 3 months 1 week (www.latimes.com)
Surprisingly alkaline, the soil on Mars it could support green beans and asparagus, say Phoenix mission scientists, who are "flabbergasted" by the findings.
The spreads of prion disease through sheep milk
sea-maid submitted, created time 3 months 1 week (www.newscientist.com)
Ewes infected with scrapie, the sheep equivalent of mad cow disease, can transmit the disease to lambs through their milk. Should we be worried? Does BSE spread to calves or even humans in cows' milk? And do mothers with variant Creutzfeldt Jakob Disease (vCJD), the human equivalent of BSE, spread it to breastfeeding infants?
And after reading this study, you will find the answer.
kavin submitted, created time 4 months 2 days (web.ebscohost.com)
This experiment was undertaken to assess the advantages of using diallel crosses to define combining ability and understand heterosis in a broad-based wheat-breeding population across different environments affected by yellow rust. This research shows the power of available quantitative breeding tools to help breeders choose parental sources in a population improvement programme.
A Transporter Regulating Silicon Distribution in Rice Shoots
kavin submitted, created time 4 months 3 days (www.plantcell.org)
Rice (Oryza sativa) accumulates very high concentrations of silicon (Si) in the shoots, and the deposition of Si as amorphous silica helps plants to overcome biotic and abiotic stresses. In the paper, the authors describe a transporter, Lsi6, which is involved in the distribution of Si in the shoots. The results indicate that Lsi6 is a transporter responsible for the transport of Si out of the xylem and subsequently affects the distribution of Si in the leaf.
Functional analysis of cotton orthologs of GA signal transduction factors GID1 and SLR1
kavin submitted, created time 4 months 6 days (www.ncbi.nlm.nih.gov)
As we know, gibberellic acid (GA) is both necessary and sufficient to promote fiber elongation in cultured fertilized ovules of the upland cotton variety Coker 312. The researchers's results indicate that the initiation of fiber elongation by the application of GA to cultured ovules corresponds with increased expression of genes that encode xyloglucan endotransglycosylase/hydrolase (XTH) and expansin (EXP) that are involved in promoting cell elongation.
Climate Change Is Bad News for U.S. Agriculture
sea-maid submitted, created time 4 months 6 days (sciencenow.sciencemag.org)
This article tells us that how climate change could affect U.S. agriculture.
kavin submitted, created time 4 months 1 week (www.ncbi.nlm.nih.gov)
As we know, RING finger proteins comprise a large family and play key roles in regulating growth/developmental processes, hormone signaling and responses to biotic and abiotic stresses in plants. In this paper, the authors tell us that OsBIRF1 has pleiotropic effects on growth and defense response against multiple abiotic and biotic stresses.
Collective Motion and Cannibalism in Locust Migratory Bands
sea-maid submitted, created time 4 months 2 weeks (www.current-biology.com)
We know that plagues of mass migrating insects such as locusts are estimated to affect the livelihood of one in ten people on the planet. Because of above reason, identification of generalities in the mechanisms underlying these mass movements will enhance our understanding of animal migration and collective behavior while potentially contributing to pest-management efforts.
OsDREB1F gene increases salt, drought, and low temperature tolerance in both Arabidopsis and rice
kavin submitted, created time 4 months 3 weeks (www.ncbi.nlm.nih.gov)
In this study, a novel rice DREB transcription factor, OsDREB1F, was cloned and characterised via subtractive suppression hybridisation (SSH) from upland rice. The further characterisation of OsDREB1F-overexpressing Arabidopsis showed that, besides activating the expression of COR genes which contain DRE/CRT element in their upstream promoter regions, the expression of rd29B and RAB18 genes were also activated, suggested that OsDREB1F may also participate in ABA-dependent pathways.
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