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The Complete Mitochondrial Genome of Platysternon megacephalum peguense and Molecular Phylogenetic Analysis

文献类型： 外文期刊

作者： Luo, Hongdi 1 ; Li, Haijun 1 ; Huang, An 1 ; Ni, Qingyong 1 ; Yao, Yongfang 3 ; Xu, Huailiang 3 ; Zeng, Bo 1 ; Li, Ying 1 ;

作者机构： 1.Sichuan Agr Univ, Coll Anim Sci & Technol, Chengdu 611130, Sichuan, Peoples R China

2.Sichuan Agr Univ, Farm Anim Genet Resources Explorat & Innovat Key, Chengdu 611130, Sichuan, Peoples R China

3.Sichuan Agr Univ, Coll Life Sci, Yaan 625014, Sichuan, Peoples R China

4.Hebei Acad Agr & Forestry Sci, Inst Millet Crops, Shijiazhuang 050051, Hebei, Peoples R China

5.Guangxi Normal Univ, Minist Educ, Key Lab Ecol Rare & Endangered Species & Environm, Guilin 541004, Guangxi, Peoples R China

6.Guangxi Normal Univ, Coll Life Sci, Guangxi Key Lab Rare & Endangered Anim Ecol, Guilin 541004, Guangxi, Peoples R China

关键词： mitogenome; gene rearrangement; phylogenetic analysis; divergence time

期刊名称：GENES （ 影响因子：4.096； 五年影响因子：4.339 ）

ISSN： 2073-4425

年卷期： 2019 年 10 卷 7 期

页码：

收录情况： SCI

摘要： Platysternon megacephalum is the only living representative species of Platysternidae and only three subspecies remain: P. m. megalorcephalum, P. m. shiui, and P. m. peguense. However, previous reports implied that P. m. peguense has distinct morphological and molecular features. The characterization of the mitogenome has been accepted as an efficient means of phylogenetic and evolutionary analysis. Hence, this study first determined the complete mitogenome of P. m. peguense with the aim to identify the structure and variability of the P. m. peguense mitogenome through comparative analysis. Furthermore, the phylogenetic relationship of the three subspecies was tested. Based on different tRNA gene loss and degeneration of these three subspecies, their rearrangement pathways have been inferred. Phylogenetic analysis showed that P. m. peguense is a sister group to (P. m. megalorcephalum and P. m. shiui). Furthermore, the divergence time estimation of these three subspecies coincided with the uplift of the Tibetan Plateau. This study shows that the genetic distances between P. m. peguense and the other two subspecies are comparable to interspecific genetic distances, for example within Mauremys. In general, this study provides new and meaningful insights into the evolution of the three Platysternidae subspecies.

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