Fractionation of carbon isotopes in oxygenic photosynthesis be less fractionated in C (ie, δC is relatively less negative) compared to C3 plants with low water-use efficiency. C4 plants have developed the C4 carbon fixation pathway to conserve water loss, thus are more prevalent in hot, sunny, and dry climates. These plants differ from C3 plants because the Calvin Cycle in C4 plants produces a four-carbon molecule, malate (rather than 3-phosphoglycerate), after fixation of CO. Malate, the four-carbon compound is the namesake of "C4" photosynthesis. This pathway allows C4 photosynthesis to efficiently shuttle CO to the RuBisCO enzyme and maintain high concentrations of CO within bundle sheath cells.
What More Do I Need? What More Do I Need? "What More Do I Need?" is the 94th episode of the ABC television series, "Desperate Housewives". It is the seventh episode of the show's fifth season and aired on November 9, 2008. The story continues from the previous episode, when Lynette confronted Tom after she thought he is having an affair. They both misunderstood each other, but the situation is immediately resolved when Lynette realizes that Porter is the one who is having sex with Anne. Lynette and Tom ask Porter to end the relationship via the phone, but Porter refuses, fearing that Mr. Schilling