Frequent mitochondrial gene rearrangements at the hymenopteran nad3-nad5 junction
Frequent mitochondrial gene rearrangements at the hymenopteran nad3-nad5 junction
复制标题
DOI：
10.1007/s00239-002-2420-3
复制
发表时间：
2003-05-01
影响因子：
3.9
通讯作者：
Austin, AD
中科院分区：
文献类型：
--
作者：
Dowton, M;Castro, LR;Austin, AD
我们描述了来自不同种类膜翅目的线粒体基因的组织。在描述的21个分类群中，有12个具有不同的派生组织。有些重排符合复制-随机丢失机制，而另一些重排则不符合。局部倒置相对常见，即基因从一条线粒体链移动到另一条线粒体链，与其祖先位置相反或接近的重排。这种类型的重排与线粒体基因重排的复制/随机丢失模型不一致。相反，它们最好的解释是重组的操作。具有衍生组织的分类群仅限于一个单一的黄蜂类群，即Apocita，约占所有膜翅目昆虫的90%。
We characterized the organization of mitochondrial genes from a diverse range of hymenopterans. Of the 21 taxa characterized, 12 had distinct, derived organizations. Some rearrangements were consistent with the duplication-random loss mechanism, while others were not. Local inversions were relatively common, i.e., rearrangements characterized by the movement of genes from one mitochondrial strand to the other, opposite or close to their ancestral position. This type of rearrangement is inconsistent with the duplication/random loss model of mitochondrial gene rearrangement. Instead, they are best explained by the operation of recombination. Taxa with derived organizations were restricted to a single, monophyletic group of wasps, the Apocrita, which comprise about 90% of all hymenopterans.