Xiao Jiaguang, Tian Peng, Guo Feng, Yu Shuangen, Wang Wei, Wang Xiaolei, Niu Wentao
Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China.
Fisheries College, Ocean University of China, Qingdao 266003, China.
Saudi J Biol Sci. 2021 Dec;28(12):7054-7060. doi: 10.1016/j.sjbs.2021.07.086. Epub 2021 Aug 5.
Mitochondrial genome DNA is a powerful marker for resolving phylogenetic relationships among scleractinian corals. Here, we decode the complete mitochondrial genome of (Lamarck, 1816) for the first time. The general features are 18 363 bp in length, and conventionally, with 13 protein coding genes, two ribosomal RNAs, and two transfer RNAs. Gene arrangement and distribution are similar to other scleractinian corals. Moreover, the COI gene of is broken up into two parts by a complex group I intron. This intron is 1076 bases in length and contains helical structures (P1-P10, except P2) and four conserved regions (P, Q, R, and S). The mitochondrial genome of has asymmetric base composition (13.03% C, 20.29% G, 25.91% A, and 40.77% for T). Based on concatenated protein coding genes, ML and BI trees show similar phylogenetic relationship: clustered closely with and into the robust branch. The data and conclusion in this study are reference for further phylogenetic studies of corals.
线粒体基因组DNA是解决石珊瑚系统发育关系的有力标记。在此，我们首次解码了（拉马克，1816年）的完整线粒体基因组。其一般特征是长度为18363 bp，传统上有13个蛋白质编码基因、两个核糖体RNA和两个转移RNA。基因排列和分布与其他石珊瑚相似。此外，的COI基因被一个复杂的I类内含子分成两部分。这个内含子长度为1076个碱基，包含螺旋结构（P1 - P10，除P2外）和四个保守区域（P、Q、R和S）。的线粒体基因组具有不对称的碱基组成（C为13.03%，G为20.29%，A为25.91%，T为40.77%）。基于串联的蛋白质编码基因，最大似然法（ML）树和贝叶斯推断（BI）树显示出相似的系统发育关系：与和紧密聚类到粗壮分支中。本研究中的数据和结论为珊瑚的进一步系统发育研究提供了参考。
