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 You Need (Stacy Lattisaw album) What You Need (Stacy Lattisaw album) What You Need is the tenth and final studio album by American contemporary R&B singer Stacy Lattisaw, released October 17, 1989 via Motown Records. It did not chart on the "Billboard" 200, but it peaked at #16 on the "Billboard" R&B chart. It was also Lattisaw's final album before she retired from the music industry. Four singles were released from the album: "What You Need", "Where Do We Go from Here", "Dance for You" and "I Don't Have the Heart". "Where Do We Go from Here" was the most successful single from the album,