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Latest C4 carbon fixation Stories

2013-10-15 23:01:31

Published evidence by SDSM&T and the New York State Museum suggests modern grasses eaten by large mammals of what is now the Mojave Desert are actually 15 million years old. Rapid City, S.D. (PRWEB) October 15, 2013 A South Dakota School of Mines & Technology professor’s research published today provides evidence that modern grasses are actually 15 million years old. The article published in Palaeogeography, Palaeoclimatology, Palaeocology by Robert Feranec of the New York...

The Evolution Of Grass Photosynthesis
2012-12-26 05:22:06

Brett Smith for redOrbit.com - Your Universe Online In examining the differences in photosynthetic activity among certain types of grasses, researchers from Brown University found that some plants are positioned to take evolutionary advantage of certain situations. According to a report in the Proceedings of the National Academy of Sciences, Brown researcher Pascal-Antoine Christin spent two years analyzing the cellular anatomy of 157 living species of two different grass clades, BEP...

2012-02-16 18:14:40

The evolution of plants and animals generally has been thought to occur through the passing of genes from parent to offspring and genetic modifications that happen along the way. But evolutionary biologists from Brown University and the University of Sheffield have documented another avenue, through the passing of genes from plant to plant between species with only a distant ancestral kinship. How this happened is unclear. But the researchers show that not only did a grouping of grasses...

Image 1 - How Drought-tolerant Grasses Came To Be
2011-11-25 04:28:54

New grass family tree reveals C4 photosynthesis is an evolutionary 1-way street If you eat bread stuffing or grain-fed turkey this Thanksgiving, give thanks to the grasses – a family of plants that includes wheat, oats, corn and rice. Some grasses, such as corn and sugar cane, have evolved a unique way of harvesting energy from the sun that's more efficient in hot, arid conditions. A new grass family tree reveals how this mode of photosynthesis came to be. The results may one day...

2011-05-12 22:12:16

"I have a slide that has a photo of a cornfield and a big photovoltaic array," says Robert Blankenship, a scientist who studies photosynthesis at Washington University in St. Louis. "When I give talks I often ask the audience which one is more efficient. Invariably the audience votes overwhelmingly in favor of photosynthesis. " They are wrong. This question and its surprising answer (below) is the point of departure for a provocative article published in the May 13 issue of Science. The...

2010-11-16 21:40:08

According to a popular hypothesis, grasses such as maize, sugar cane, millet and sorghum got their evolutionary start as a result of a steep drop in atmospheric carbon dioxide levels during the Oligocene epoch, more than 23 million years ago. A new study overturns that hypothesis, presenting the first geological evidence that the ancestors of these and other C4 grasses emerged millions of years earlier than previously established. The findings are published in the journal Geology. C4 plants...

2010-11-15 20:45:36

Innovative research technique reveals C4 grasses older than previously thought A new analysis of fossilized grass-pollen grains deposited on ancient European lake and sea bottoms 16-35 million years ago reveals that C4 grasses evolved earlier than previously thought. This new evidence casts doubt on the widely-held belief that the rise of this incredibly productive group of plants was driven by a large drop in atmospheric carbon dioxide concentrations during the Oligocene epoch. The...

2010-11-04 01:17:22

Photosynthesis is arguably the most impressive feat of nature, where plants harvest light energy and convert it into the building blocks of life at fantastically high efficiency. Indeed modern civilization became possible only with the cultivation of plants for food, shelter and clothing. While scientists have been able to discover details of the fascinating process by which plants store solar energy as chemical energy, how developing plants build and regulate their solar reactors is still...

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2010-02-08 16:22:54

Around 30 to 40 million years ago, grasses on Earth underwent an epic evolutionary upheaval. An assemblage capitalized on falling levels of atmospheric carbon dioxide by engineering an internal mechanism to concentrate the dwindling CO2 supply that, like a fuel-injection system in a car, could more efficiently convert sunlight and nutrients into energy. The rise of C4 grasses is not disputed. They dominate in hot, tropical climes and now make up to 20 percent of our planet's vegetational...


Word of the Day
lambent
  • Licking.
  • Hence Running along or over a surface, as if in the act of licking; flowing over or along; lapping or bathing; softly bright; gleaming.
This word comes the Latin 'lambere,' to lick.
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