The first complete chloroplast genome of Cymodocea rotundata Asch. & Schweinf. 1870 (Cymodoceaceae), an Indo-Pacific seagrass.

IF 0.5 4区生物学 Q4 GENETICS & HEREDITY

Mitochondrial DNA. Part B, Resources Pub Date : 2024-11-26 eCollection Date: 2024-01-01 DOI:10.1080/23802359.2024.2432370

Mingzhong Liu, Jiaxin Wu, Yunfeng Shi, Rongrong Shan

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Abstract

Cymodocea rotundata Asch. & Schweinf. 1870 (Cymodoceaceae) is a seagrass found in the tropical and temperate Indo-Pacific coastal waters. Seagrass beds composed of C. rotundata and other seagrasses form ecologically valuable ecosystems. In this study, the complete chloroplast genome of C. rotundata was sequenced and characterized for the first time. It is a circular genome of 158,311 bp in length, consisting of a large single-copy region (88,451 bp), a small single-copy region (18,836 bp), and a pair of inverted repeats (25,512 bp). A total of 130 genes were annotated, including 86 protein-coding genes (PCGs), 36 transfer RNA (tRNA) genes, and 8 ribosomal RNA (rRNA) genes. Seven PCGs and 6 tRNA genes contain 1 intron, and 3 PCGs contain 2 introns. In addition, 7 PCGs, 7 tRNA genes, and all the rRNA genes are multi-copy genes with 2 copies. Phylogenetic analysis shows that C. rotundata clusters with Syringodium isoetifolium in one clade, both belonging to the family Cymodoceaceae. This study provides new information to support further research on the phylogeny of Cymodoceaceae.

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第一个完整的圆形Cymodocea roundata的叶绿体基因组。& Schweinf. 1870（海藓科），一种印度太平洋海草。

圆桃草& Schweinf. 1870 （Cymodoceaceae）是一种产于热带和温带印度太平洋沿岸水域的海草。由圆藻和其他海草组成的海草床形成了具有生态价值的生态系统。在本研究中，首次对圆轮草叶绿体全基因组进行了测序和鉴定。它是一个长度为158,311 bp的圆形基因组，由一个大的单拷贝区（88,451 bp）、一个小的单拷贝区（18,836 bp）和一对反向重复序列（25,512 bp）组成。共注释了130个基因，包括86个蛋白质编码基因（PCGs）、36个转移RNA （tRNA）基因和8个核糖体RNA （rRNA）基因。7个PCGs和6个tRNA基因含有1个内含子，3个PCGs含有2个内含子。另外，7个PCGs基因、7个tRNA基因和所有rRNA基因均为2拷贝的多拷贝基因。系统发育分析表明，圆叶香椿与异叶香椿属同一进化支，均属于香椿科。本研究为进一步深入研究香树科植物的系统发育提供了新的信息。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Mitochondrial DNA. Part B, Resources Biochemistry, Genetics and Molecular Biology-Molecular Biology

CiteScore

1.30

自引率

20.00%

发文量

670

期刊介绍： This open access journal publishes high-quality and concise research articles reporting the sequence of full mitochondrial genomes, and short communications focusing on the physical, chemical, and biochemical aspects of mtDNA and proteins involved in mtDNA metabolism and interactions.