Complete mitochondrial genome of Chilo suppressalis (Walker) (Lepidoptera: Crambidae)

Abstract

The complete sequence of the mitochondrial genome (mitogenome) of the rice stem borer Chilo suppressalis (Walker) (Lepidoptera: Crambidae) was determined to be 15,465 bp. It contains 13 protein-coding genes (PCGs), 22 tRNA genes, the large and small rRNA genes, and an A+T-rich region. The nucleotide composition of the mitogenome of C. suppressalis is highly A+T biased, accounting for 79.70% in whole mitogenome, 77.74% in PCGs, 84.70% in tRNAs, 81.20% in rRNAs and 94.19% in A+T-rich region, respectively. The PCGs have typical ATN start codons, except for cox1, which contains the unusual CGA. The C. suppressalis A+T-rich region contains a conserved structure combining the motif ATAGA and a 19-bp poly-T stretch, but absence of the 9-bp poly-A element upstream trnM.

Keywords::

• Mitochondrial genome
• Chilo suppressalis
• lepidopteran

Declaration of Interest: This work was supported by the Special Fund for Agro-scientific Research in the Public Interest (201003025), the National Program on Key Basic Research Projects (“973” program, 2006CB102007), the National Key Technologies R&D Program of the People's Republic of China (2006BADA01, 2006BADA05), and the Program for New Century Excellent Talents in University (NCET-07-0251).