Fractionation of carbon isotopes in oxygenic photosynthesis the bundle sheath cells. This limits the carbon available to RuBisCO, which in turn lowers its fractionation effect. This accounts for the overall delta value in C4 plants to be -12 to -16 ‰. Plants that use Crassulacean acid metabolism, also known as CAM photosynthesis, temporally separate their chemical reactions between day and night. This strategy modulates stomatal conductance to increase water-use efficiency, so is well-adapted for arid climates. During the night, CAM plants open stomata to allow CO to enter the cell and undergo fixation into organic acids that are stored in vacuoles. This carbon is released to the
What U Need? What U Need? "what U need?" is a single recorded by Chinese singer Lay for his debut extended play "Lose Control" . It was pre-released on October 7, 2016 by S.M. Entertainment as a birthday gift for Lay's fans. Produced by Devine Channel and Lay, "what U need?" is described as a "Pop-R&B" song with lyrics about being overwhelmed by a loved one. "what U need?" music video was released on October 7, 2016. It features Lay with backup dancers dancing the song's choreography. Lay performed "what U need?" for the first time on October 9 at the 2016 Asia