Mitochondrial genomes of soft scales (Hemiptera: Coccidae): features, structures and significance.
BMC Genomics
; 24(1): 37, 2023 Jan 21.
Article
in En
| MEDLINE
| ID: mdl-36670383
ABSTRACT
BACKGROUND:
Soft 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.RESULTS:
In 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.CONCLUSIONS:
The 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.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Genome, Mitochondrial
/
Hemiptera
Limits:
Animals
Language:
En
Journal:
BMC Genomics
Journal subject:
GENETICA
Year:
2023
Document type:
Article
Affiliation country:
China