Early agriculture left traces in animal bones Mar 24, 2009
Certain kinds of plants known as C4 plants tend to concentrate heavier carbon isotopes as they grow, compared to other plants known as C3 plants. Animals with diets high in C4 plants also tend to concentrate heavier isotopes in their bones. (EurekAlert!)
High Carbon Dioxide Boosts Plant Respiration, Potentially Affecting Climate And Crops Feb 11, 2009
While there is broad agreement that higher atmospheric CO2 levels stimulate photosynthesis in C3 plants, such as soybean, no such consensus exists on how rising CO2 levels will affect plant respiration. "There's been a great deal of controversy about how plant respiration responds to elevated CO2," said U. of I. plant biology professor Andrew Leakey, who led the study. (Science Daily)
Preparing For Climate Change: Analyzing Genome Of Heat And Drought Resistant Cereal Plant Feb 7, 2009
They can assimilate carbon at higher temperatures and more efficiently than C3 plants and are especially suitable for the production of biomass for energy. Sorghum is the first cereal plant with C4 photosynthesis whose genome has been completely sequenced. (Science Daily)