Centre of Ecological and Evolutionary Studies (CEES), University of Groningen, Haren, The Netherlands.
Mol Phylogenet Evol. 2010 Oct;57(1):411-6. doi: 10.1016/j.ympev.2010.06.010. Epub 2010 Jun 19.
Although the mitochondrial genome in birds has highly conserved features, with protein genes similar to mammals and amphibians, several variations in gene order around the hypervariable control region have been found. Here we report a novel gene arrangement around the control region in shorebirds (Charadriiformes). In ruffs Philomachus pugnax, the mitochondrial genome between cytochrome b and 12SrRNA was over 1.5 kb longer than reported for other Charadriiformes and contained a duplication of the control region together with NADH dehydrogenase subunit 6 (ND6) and the adjacent transfer RNAs: tRNA(Pro) and tRNA(Glu). Sequence data from 68 individuals from several stopover and breeding populations show that the duplication is widespread in ruffs. Similar gene re-arrangements have been found independently in unrelated tube-nosed seabirds and spoonbills.
虽然鸟类的线粒体基因组具有高度保守的特征，其蛋白质基因与哺乳动物和两栖动物相似，但在高度可变的控制区周围的基因顺序上存在一些变化。在这里，我们报告了涉禽（Charadriiformes）中控制区周围的一个新基因排列。在环颈鸻 Philomachus pugnax 中，细胞色素 b 和 12SrRNA 之间的线粒体基因组比其他涉禽报道的长 1.5kb 以上，并且包含控制区的重复以及 NADH 脱氢酶亚基 6（ND6）和相邻的转移 RNA：tRNA（Pro）和 tRNA（Glu）。来自多个中途停留和繁殖种群的 68 个个体的序列数据表明，这种重复在环颈鸻中广泛存在。在不相关的管鼻海鸟和琵鹭中也独立发现了类似的基因重排。
