Abstract:
:There have been few reports of complete mitochondrial genomes (mitogenomes) of scale insects, and it has been indicated that complex and novel structures in their mitogenomes may lead to difficulties in sequencing, assembly and annotation. Transfer RNAs (tRNAs) usually possess typical cloverleaf secondary structures, and truncated tRNAs are rarely found in insect mitogenomes. Here, we report a complete Saissetia coffeae mitogenome (15,389 bp) with high A+T content (84.7%) sequenced by next-generation sequencing (NGS) methods. Genes in the mitogenome were annotated, and nine tRNAs were not found using MITOS. Most of the detected tRNAs were significantly truncated without the dihydrouridine (DHU) arm or the TΨC (T) arm. In addition, the 9 "lost" tRNAs containing mismatched base pairs were retrieved based on the tRNA annotation workflow for Coccidae described in our study. The gene arrangement in the Saissetia coffeae mitogenome was significantly different from that in other hemipteran insects. Additionally, Bayesian and maximum likelihood trees based on the mitochondrial genes showed a long branch of the Saissetia lineage, indicating significant nonsynonymous substitutions or high evolutionary rates in the Saissetia lineage. We provide a reference mitogenome for the assembly and annotation of the Coccidae mitogenome and offer insights into the evolution of scale insects.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Lu C,Huang X,Deng Jdoi
10.1016/j.ijbiomac.2020.04.257subject
Has Abstractpub_date
2020-05-07 00:00:00pages
854-864eissn
0141-8130issn
1879-0003pii
S0141-8130(20)33111-1journal_volume
158pub_type
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