Abstract

Carya ovata is a slow-growing, long-lived deciduous species that belongs to section Carya of genus Carya. In this study, we de novo assembled the complete chloroplast genome of C. ovata, and analyzed its phylogenetic relationship. The circular genome was 160,765 bp in length, comprising a large single-copy region (89,975 bp), a small single-copy region (18,788 bp), and a pair of inverted repeat regions (26,001 bp each). The chloroplast genome was predicted to contain 131 genes, including 83 protein-coding genes, 40 transfer RNA (tRNA) genes, and 8 ribosomal RNA (rRNA) genes. Overall, the GC content of the chloroplast genome was 36.16%. Phylogenetic analysis suggested that C. ovata was closely related to C. illinoinensis, a representative of section Apocarya within the genus Carya.

摘要

卵子山核桃（Carya ovata）是一种生长缓慢，寿命长的落叶树种，属于Carya属Carya的一部分。在这项研究中，我们从头组装了C的完整叶绿体基因组。卵，并分析其系统发育关系。环状基因组的长度为160,765 bp，包括一个大的单拷贝区域（89,975 bp），一个小的单拷贝区域（18,788 bp）和一对反向重复区域（每个26,001 bp）。预测叶绿体基因组包含131个基因，包括83个蛋白质编码基因，40个转移RNA（tRNA）基因和8个核糖体RNA（rRNA）基因。总体而言，叶绿体基因组的GC含量为36.16％。系统发育分析表明，C。ovata的密切相关C. illinoinensis，段的代表性Apocar​​ya属内山核桃。