To identify abalone species effectively for better management and protection of abalone germplasm resources, we have obtained the complete mitochondrial genome of juvenile green abalone (Haliotis fulgens) through high-throughput sequencing, and its sequences and structural characteristics are analyzed accordingly. The results show that the mitogenome of H. fulgens is 17 041 bp in total length and encoded 37 genes, including 13 protein coding genes, 22 transfer RNA (tRNA) genes and 2 ribosomal RNA (rRNA) genes. The 13 protein coding genes used AUG as the starting codon and UAA or UAG as the termination codon. Twenty-one tRNA genes other than tRNA-Ser(AGN) could be folded into a typical cloverleaf structure. There is a rich A+T non-coding region between tRNA-Glu and COX3, with two hairpin structures containing palindromes in it. A phylogenetic tree was constructed based on the reported complete mitochondrial genome sequences of Haliotis genus species, and phylogenetic analysis shows that H. fulgens is clustered with H. discus hannai, H. rufescens and H. cracherodii. Comparing the domains of 13 proteins of mitogenome of H. fulgens and H. discus hannai, we found the number of transmembrane domains of ND2 or ND4 dehydrogenase subunits were different in them. Whether this is related to the difference of high temperature tolerance between them needs further study. In brief, the first acquisition and analysis of the complete mitochondrial genome of H. fulgens has enriched the abalone cellular genetic information, and provided basic data and references for abalone species classification, germplasm identification, and protection of germplasm resources of H. fulgens as well.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |