We present the first documented complete mitogenomes of deep-sea Pennatulacea, representing nine genera and eight families. These include one species each of the deep-sea genera Funiculina, Halipteris, Protoptilum and Distichoptilum, four species each of Umbellula and Pennatula, three species of Kophobelemnon and two species of Anthoptilum, as well as one species of the epi- and mesobenthic genus Virgularia. Seventeen circular genomes ranged from 18,513 bp (Halipteris cf. finmarchica) to 19,171 bp (Distichoptilum gracile) and contained all genes standard to octocoral mitochondrial genomes (14 protein-coding genes, two ribosomal RNA genes and one transfer RNA). We found at least three different gene orders in Pennatulacea: the ancestral gene order, the gene order found in bamboo corals (Family Isididae), and a novel gene order. The mitogenome of one species of Umbellula has a bipartite genome (∼13 kbp and ∼5 kbp), with good evidence that both parts are circular.

我们介绍了代表深海前翅类的第一个完整的有丝分裂基因组，代表了9个属和8个科。这些措施包括各深海属的一个物种Funiculina，Halipteris，Protoptilum和Distichoptilum，每4个品种Umbellula和Pennatula，三个品种的Kophobelemnon和两个物种Anthoptilum，还有外延和mesobenthic属的一个种Virgularia。17个环状基因组的范围从18,513 bp（Halipteris cf. finmarchica）到19,171 bp（Distichoptilum gracile），并包含所有八进制线粒体基因组标准的基因（14个蛋白质编码基因，两个核糖体RNA基因和一个转移RNA）。我们在翻翅目中发现了至少三个不同的基因顺序：祖先的基因顺序，在竹珊瑚中发现的基因顺序（异蝇科）和一个新的基因顺序。一种伞形目的有丝分裂基因组具有两部分基因组（〜13 kbp和〜5 kbp），有充分的证据表明这两个部分都是圆形的。