Shi Yujie, Chen Zhen, Jiang Jingyong, Wu Wenwu, Yu Weifu, Zhang Shumeng, Zeng Wei
Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, College of Life Sciences, Taizhou University, Taizhou, China.
Institute of Horticulture, Taizhou Academy of Agricultural Sciences, Linhai, China.
Front Plant Sci. 2024 Sep 3;15:1439245. doi: 10.3389/fpls.2024.1439245. eCollection 2024.
, a member belongs to the genus of Lauraceae family. Its roots and leaves have been used as traditional Chinese medicine or functional food for thousands of years. However, its mitochondrial genome has not been explored. Our aim is to sequence and assemble the mitogenome of to elucidate the genetic mechanism and evolutionary pathway. The results had shown that the mitogenome was extremely complex and had a unique multi-branched conformation with total size of 912,473 bp. Comprehensive analysis of protein coding genes of 7 related species showed that there were 40 common genes in their mitogenome. Interestingly, positive selection had become an important factor in the evolution of , , , and genes. Furthermore, our data highlighted the repeated trend of homologous fragment migrations between chloroplast and mitochondrial organelles, and 38 homologous fragments were identified. Phylogenetic analysis identified a tree that was basically consistent with the phylogeny of Laurales species described in the APG IV system. To sum up, this study will be helpful to the study of population genetics and evolution of species.
，是樟科属的一个成员。其根和叶作为传统中药或功能性食品已被使用了数千年。然而，其线粒体基因组尚未被研究。我们的目的是对的线粒体基因组进行测序和组装，以阐明其遗传机制和进化途径。结果表明，该线粒体基因组极其复杂，具有独特的多分支构象，总大小为912,473 bp。对7个相关物种的蛋白质编码基因进行综合分析表明，它们的线粒体基因组中有40个共同基因。有趣的是，正选择已成为、、、和基因进化的一个重要因素。此外，我们的数据突出了叶绿体和线粒体细胞器之间同源片段迁移的重复趋势，并鉴定出38个同源片段。系统发育分析确定了一棵与APG IV系统中描述的樟目物种系统发育基本一致的树。综上所述，本研究将有助于对物种的群体遗传学和进化研究。
