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蓝喉歌鸲的完整线粒体基因组及系统发育分析()。

Complete Mitochondrial Genome and Phylogenetic Analysis of the Blue Whistling Thrush ().

机构信息

Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224, China.

Key Laboratory for Conserving Wildlife with Small Populations in Yunnan, Southwest Forestry University, Kunming 650224, China.

出版信息

Genes (Basel). 2024 Jun 24;15(7):830. doi: 10.3390/genes15070830.

Abstract

The blue whistling thrush () is a bird belonging to the order Passeriformes and family Muscicapidae. is widely distributed in China, Pakistan, India, and Myanmar and is a resident bird in the southern part of the Yangtze River in China and summer migratory bird in the northern part of the Yangtze River. At present, there are some controversies about the classification of We use complete mitochondrial genomes to provide insights into the phylogenetic position of and its relationships among Muscicapidae. The mitochondrial genome (GenBank: MN564936) is 16,815 bp long and contains 13 protein-coding genes (PCGs), 2 rRNA genes, 22 tRNA genes, and a non-coding control region (D-loop). The thirteen PCGs started with GTG and ATG and ended with five types of stop codons. The nucleotide composition of T was 23.71%, that of C was 31.45%, that of A was 30.06%, and that of G was 14.78%. The secondary structures of 22 tRNAs were predicted, all of which could form typical cloverleaf structures. There were 24 mismatches, mainly G-U mismatches. Through phylogenetic tree reconstruction, it was found that , , , and were clustered into one clade, together with the sister group of .

摘要

蓝喉歌鸲()是雀形目鸫科歌鸲属的鸟类。分布于巴基斯坦、印度、缅甸以及中国大陆的甘肃、四川、贵州、云南、西藏、广西、广东、福建、香港、海南等地,多生活于平原以至海拔 4000 米的高山以及栖息于在近溪流的密林中。该物种的模式产地在印度大吉岭。目前关于蓝喉歌鸲的分类存在一些争议。我们使用完整的线粒体基因组来探讨蓝喉歌鸲的系统发育位置及其在鸫科中的亲缘关系。线粒体基因组(GenBank:MN564936)长 16815bp,包含 13 个蛋白编码基因(PCGs)、2 个 rRNA 基因、22 个 tRNA 基因和一个非编码控制区(D-loop)。13 个 PCGs 以 GTG 和 ATG 起始,以 5 种终止密码子结束。核苷酸组成中 T 为 23.71%,C 为 31.45%,A 为 30.06%,G 为 14.78%。预测了 22 个 tRNA 的二级结构,均能形成典型的三叶草结构。存在 24 个错配,主要为 G-U 错配。通过构建系统发育树发现,蓝喉歌鸲、白腹蓝鹟、纯色噪鹛和栗头噪鹛聚为一支,与画眉科的姐妹群聚在一起。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f0a/11275496/9dcd0ff6ae93/genes-15-00830-g001.jpg

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