三种鹦鹉（鹦形目：凤头鹦鹉科）的完整线粒体基因组特征和比较分析。
Characterization and Comparative Analysis of Complete Mitogenomes of Three Parrots (Psittaciformes: Cacatuidae).
机构信息
Department of Biotechnology, Sangmyung University, Seoul 03016, Korea.
Conservation and Health Center, Seoul Zoo, Gwacheon 13829, Korea.
出版信息
Genes (Basel). 2021 Jan 31;12(2):209. doi: 10.3390/genes12020209.
, and are parrots of the family Cacatuidae. Wild populations of these species are declining with listed by the International Union for the Conservation of Nature and Natural Resources (IUCN) as Endangered. In this study, complete mitogenomes were sequenced for a comparative analysis among the species, and a detailed analysis of the control region. Mitogenome lengths of and were 18,894, 18,900, and 19,084 bp, respectively. They included 13 protein coding genes, two ribosomal RNA genes, 24 transfer RNA genes, three degenerated genes, and two control regions. Ten conserved motifs were found in three domains within each of the two control regions. For an evolution of duplicated control regions of , domain I and the 3' end of domain III experienced an independent evolution, while domain II and most of the regions of domain III was subjected to a concerted evolution. Based on a phylogenetic analysis of 37 mitochondrial genes, the genus formed a well-supported, monophyletic, crown group within the Cacatuidae. Molecular dating results showed that diverged from other genera of Cacatuinae in the middle of Miocene.
和尚鹦鹉、玫瑰鹦鹉和红领绿鹦鹉是长尾鹦鹉科的鹦鹉。这些物种的野生种群正在减少，其中玫瑰鹦鹉被国际自然保护联盟列为濒危物种。在这项研究中，我们对和尚鹦鹉、玫瑰鹦鹉和红领绿鹦鹉的完整线粒体基因组进行了测序，以便在这 3 个物种间进行比较分析，并对控制区进行了详细分析。和尚鹦鹉和红领绿鹦鹉的线粒体基因组长度分别为 18894bp 和 18900bp，玫瑰鹦鹉的线粒体基因组长度为 19084bp。它们包含 13 个蛋白质编码基因、2 个核糖体 RNA 基因、24 个转移 RNA 基因、3 个退化基因和 2 个控制区。在两个控制区的三个结构域内发现了 10 个保守的基序。对于控制区重复的进化，和尚鹦鹉的 I 区和 III 区的 3'端经历了独立的进化，而 II 区和 III 区的大部分区域则经历了协同进化。基于对 37 个线粒体基因的系统发育分析，和尚鹦鹉属在长尾鹦鹉科中形成了一个支持良好的、单系的、冠群。分子定年结果表明，和尚鹦鹉与其他长尾鹦鹉属在中新世中期分化。
Zotero 插件