Mitochondrial genomes of soft scales (Hemiptera: Coccidae): features, structures and significance

BMC Genomics

Research

Congcong Lu¹  Jun Deng¹  Xiaolei Huang¹ 

[1] State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Plant Protection, Fujian Agriculture and Forestry University, 350002, Fuzhou, China;

关键词: Coccidae;    Mitogenome comparison;    Codon usage bias;    Positive selection;   

DOI  :  10.1186/s12864-023-09131-9

 received in 2022-10-27, accepted in 2023-01-12,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundSoft scales (Hemiptera: Coccidae), including important agricultural and forestry pests, are difficult to identify directly by morphological characters. Mitochondrial genomes (mitogenomes) have been widely used in species identification and phylogenetic research. However, only three complete mitogenomes, and very few mitochondrial genes of scale insects (Hemiptera: Coccoidea) can be searched in GenBank. Mitogenome comparisons between scale insects or between scale insects and other hemipteran species have not yet been reported.ResultsIn this study, detailed annotation of three new mitogenomes and comparative analysis of scale insects were completed, as well as comparative analysis of the gene composition, gene arrangement, codon usage and evolutionary forces between scale insects and 488 other hemipteran species for the first time. We found that high A + T content, gene rearrangement and truncated tRNAs are common phenomena in soft scales. The average A + T content and codon usage bias of scale insects are higher and stronger than those of other hemipteran insects, respectively. The atp8 gene of Hemiptera and nine other protein-coding genes of scale insects are under positive selection with higher evolutionary rates.ConclusionsThe study revealed the particularity of the scale insect mitogenomes, which will provide a good reference for future research on insect phylogenetic relationships, insect pest control, biogeography and identification.

【 授权许可】

CC BY   
© The Author(s) 2023

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