Abstract:
:The globally distributed American cockroach (Periplaneta americana) is considered a pest, but it has been widely used in traditional Chinese medicine. In the past, the American cockroach's genome and transcriptomes were sequenced, but the differential expression transcripts between developmental stages were unavailable. We performed the de novo assembly and analysis of American cockroach transcriptomes from four developmental stages. Approximately 200 million high-quality paired-end reads were generated by using Illumina Hiseq 2000 sequencer. The assembly produced 291,250 transcripts with an average length of 714 bp. In addition, 38,052 microsatellites and 11,060,020 transposable elements were identified. Based on sequence homology, 53,262 transcripts were annotated. After calculating the expression levels of all the transcripts, we found that 13 transcripts were highly expressed in all the samples and at least two, p10 and actin-related protein 1, played important roles during development. A total of 7954 differentially expressed transcripts (DETs) were identified. The adult had the largest number of DETs when compared to other samples (4818), while the 3rd and 8th larva had the least number of DETs (1332). We performed gene enrichment analysis with the DETs, and some interesting results were detected in the different groups. For example, chitin is the major component of the insect exoskeleton, and the chitin-related genes in larvae and new molted samples had higher expression levels than in adults. In addition, the enrichment analysis detected many chitin-related pathways. Our study performed the first large-scale comparative transcriptomics between the developmental stages of American cockroach, which could provide useful gene expression data for future studies.
journal_name
DNA Cell Bioljournal_title
DNA and cell biologyauthors
Zeng C,Li W,Liao Q,Yan T,Wang K,Hu Y,Shen Y,Price M,Fan Z,Zhang X,Yue B,Geng F,Chen Ldoi
10.1089/dna.2018.4578subject
Has Abstractpub_date
2019-10-01 00:00:00pages
1078-1087issue
10eissn
1044-5498issn
1557-7430journal_volume
38pub_type
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