Zhang Xiang, Chen Jian, Luo Hong-Yu, Chen Xin, Zhong Jun, Ji Xiang
Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Sciences Wenzhou University Wenzhou China.
Ecol Evol. 2024 Mar 24;14(3):e11176. doi: 10.1002/ece3.11176. eCollection 2024 Mar.
The mitochondrion, which is an intracellular organelle responsible for most of the energy-producing pathways, can have its genome targeted for climate-driven selection. However, climate-driven mitochondrial selection remains a sparsely studied area in reptiles. Here, we reported the complete mitochondrial genome sequence of a lacertid lizard () and used mitogenomes from 54 species of lacertid lizards to study their phylogenetic relationships and to identify the mitochondrial genes under positive selection by climate. The length of the complete mitochondrial genome sequence of was 17,713 bp, which was within the range of lengths (17,224-18,943) ever reported for species. The arrangement of mitochondrial genes in was the same as in other congeneric species. The 54 lacertid species could be divided into three geographically and climatically different clades. We identified three mitochondrial genes (6, , and ) under positive selection by climate, and found that isothermality, temperature seasonality, precipitation of wettest month, and precipitation seasonality were the most important climatic variables contributing to the gene selection.
线粒体是一种负责大多数能量产生途径的细胞内细胞器，其基因组可能会受到气候驱动的选择。然而，在爬行动物中，气候驱动的线粒体选择仍是一个研究较少的领域。在此，我们报道了一种蜥蜴的完整线粒体基因组序列，并利用54种蜥蜴的线粒体基因组来研究它们的系统发育关系，以及确定受气候正选择的线粒体基因。该蜥蜴完整线粒体基因组序列长度为17,713 bp，在已报道的该物种长度范围（17,224 - 18,943）内。该蜥蜴线粒体基因的排列与其他同属物种相同。这54种蜥蜴可分为三个地理和气候不同的分支。我们鉴定出三个受气候正选择的线粒体基因（6、和），并发现等温性、温度季节性、最湿月降水量和降水季节性是导致基因选择的最重要气候变量。
