从完整线粒体基因组推断极度濒危的大齿锯鳐（鲼形目，锯鳐科）的系统发育位置。
The phylogenomic position of the Critically Endangered Largetooth Sawfish (Rhinopristiformes, Pristidae), inferred from the complete mitochondrial genome.
作者信息
Kyne Peter M, Wang Jun-Jie, Xiang Dan, Chen Xiao, Feutry Pierre
机构信息
Research Institute for the Environment and Livelihoods, Charles Darwin University, Darwin, Australia.
Key Laboratory of Tropical and Subtropical Fishery Resource Application and Cultivation, Ministry of Agriculture, Pearl River Fisheries Research Institute of Chinese Academy of Fishery Sciences, Guangzhou, PR China.
出版信息
Mitochondrial DNA B Resour. 2018 Sep 10;3(2):970-971. doi: 10.1080/23802359.2018.1501315.
The complete mitogenome of the Critically Endangered Largetooth Sawfish (Rhinopristiformes, Pristidae) is presented in this study. The genome is 16,912 bp in length with a nucleotide base composition of 32.0% A, 26.5% C, 13.2% G, and 28.3% T, containing 37 genes typical of vertebrates. Two start (GTG and ATG) and two stop (TAG and TAA/T) codons are found in the protein-coding genes. The 22 tRNA genes range from 66 bp (tRNA-Ser2) to 75 bp (tRNA-Leu1). The tRNA-Pro gene is duplicated with an unknown sequence between the two copies. Bayesian phylogenetic reconstruction showed that clusters with the clade with strong posterior probability (100%).
本研究展示了极度濒危的大齿锯鳐（鲼形目，锯鳐科）的完整线粒体基因组。该基因组长度为16,912 bp，碱基组成为32.0%的A、26.5%的C、13.2%的G和28.3%的T，包含37个典型的脊椎动物基因。在蛋白质编码基因中发现了两个起始密码子（GTG和ATG）和两个终止密码子（TAG和TAA/T）。22个tRNA基因长度从66 bp（tRNA - Ser2）到75 bp（tRNA - Leu1）不等。tRNA - Pro基因发生了重复，两个拷贝之间存在未知序列。贝叶斯系统发育重建显示，该物种与另一分支聚类，后验概率很强（100%）。
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