Chaudhuri C R, Chatterjee I B
Science. 1969 Apr 25;164(3878):435-6. doi: 10.1126/science.164.3878.435.
The ability of several species of birds to synthesize L-ascorbic acid is correlated with their phylogeny. In the more primitive species, synthesis of L-ascorbic acid occurs in the kidney. Among the highly evolved passeriform species, kidney and liver can synthesize L-ascorbic acid in some, whereas in others synthesis occurs in the liver. In still others, the capacity for the synthesis of L-ascorbic acid is apparently lost. The pattern of evolution of the ascorbic acid pathway among birds is thus similar to that among mammals.
几种鸟类合成L-抗坏血酸的能力与其系统发育相关。在较为原始的物种中，L-抗坏血酸在肾脏中合成。在高度进化的雀形目物种中，一些物种的肾脏和肝脏都能合成L-抗坏血酸，而在其他物种中，合成则发生在肝脏。还有一些物种，显然已经失去了合成L-抗坏血酸的能力。因此，鸟类中抗坏血酸途径的进化模式与哺乳动物相似。
