Characterization of the complete mitochondrial genome of Otus lettia: exploring the mitochondrial evolution and phylogeny of owls (Strigiformes).
Characterization of the complete mitochondrial genome of Otus lettia: exploring the mitochondrial evolution and phylogeny of owls (Strigiformes).
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Otus lettia 完整线粒体基因组的表征：探索猫头鹰（Strigiformes）的线粒体进化和系统发育
DOI：
10.1080/23802359.2021.1995517
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Qi G
中科院分区：
文献类型：
--
作者：
Yu J;Liu J;Li C;Wu W;Feng F;Wang Q;Ying X;Qi D;Qi G
鸟类的大规模分子系统发育研究已经完成，许多线粒体基因组已经确定。然而，它们的属间关系仍然存在争议，很少有全面的线粒体基因组比较分析已进行Strigiformes。本研究测定了大耳鸮的线粒体基因组，并与其它鸮形目进行了比较。手术青蛤线粒体基因组大小为16，951 bp。atp8可作为种群遗传多样性的分子标记，cox1可作为物种鉴定的候选标记。所有的蛋白质编码基因都可能处于强大的纯化选择压力之下，并且位于nad 3的一个额外的胞嘧啶插入对于除Tyto longimembris、T. alba和Athene Alcantua。在Strigiformes有丝分裂基因组中发现了4种不同的线粒体基因排列类型，它们之间的进化关系可以用串联重复和随机丢失模型来解释。利用线粒体基因组的系统发育拓扑图显示，目标种O。lettia与O. scops + O. sunia比O. bakkamoena，Glaucidium属为并系分支，Ninox分支位于Strigidae谱系的基部。我们的系统发育树也支持以前的建议，Sceloglaux albifacies，Ciccaba nigrolineata，和Ketupa flavipes应转移到Ninox，Strix，和Bubo，分别。这些研究结果将有助于进一步揭示Strigiformes的线粒体进化和进化。
Large-scale molecular phylogenetic studies of the avian order Strigiformes have been performed, and numerous mitochondrial genomes have been determined. However, their intergeneric relationships are still controversial, and few comprehensive comparative analyses of mitochondrial genomes have been conducted on Strigiformes. In this study, the mitochondrial genome of Otus lettia was determined and compared with other Strigiformes. The O. lettia mitochondrial genome was 16,951 bp in size. For Strigiformes, atp8 can be used as a suitable molecular marker for population genetic diversity, while cox1 is a candidate barcoding marker for species identification. All protein-coding genes may be under strong purifying selection pressure, and one extra cytosine insertion located in nad3 is common to all owls except Tyto longimembris, T. alba, and Athene noctua. Four different mitochondrial gene arrangement types were found among the Strigiformes mitogenomes, and their evolutionary relationship between each other can be perfectly explained by the tandem duplication and random loss model. The phylogenetic topologies using the mitochondrial genomes showed that target species O. lettia had a closer relationship with O. scops + O. sunia than O. bakkamoena, the genus Glaucidium was paraphyletic, and the Ninox clade was located at the basal position of Strigidae lineage. Our phylogenetic trees also supported the previous recommendations that Sceloglaux albifacies, Ciccaba nigrolineata, and Ketupa flavipes should be transferred to Ninox, Strix, and Bubo, respectively. These findings will be helpful in further unraveling the mitochondrial evolution and phylogeny of Strigiformes.
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