Fractionation of carbon isotopes in oxygenic photosynthesis product 3-phosphoglycerate is depleted in C due to the kinetic isotope effect of the above reaction. The overall C fractionation for C3 photosynthesis ranges between -20 to -37‰. The wide range of variation in delta values expressed in C3 plants is modulated by the stomatal conductance, or the rate of CO entering, or water vapor exiting, the small pores in the epidermis of a leaf. The δC of C3 plants depends on the relationship between stomatal conductance and photosynthetic rate, which is a good proxy of water use efficiency in the leaf. C3 plants with high water-use efficiency tend to
What I Can Do for You What I Can Do for You "What I Can Do for You" is a single by Sheryl Crow from the album "Tuesday Night Music Club" released on A&M Records. It was originally released in 1993 and the single includes a rare speedier version of LP track "The Na-Na Song" (i.e. "Volvo Cowgirl 99"). "What I Can Do for You" managed only number 97 when first released at the end of 1993, but was re-released after the success of "All I Wanna Do" and "Strong Enough". Two CD singles were released, with the second one being a limited edition including a