Abstract
We isolated two full-length cDNAs encoding 3-hydroxy-3-methyl-glutaryl coenzyme A synthase (HMG-S) and 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMG-R) from the Chinese white pine beetle (Dendroctonus armandi), and carried out some bioinformatic analysis on the full-length nucleic acid sequences and deduced amino acid sequences. Differential expression of the DaHMG-S and DaHMG-R genes was observed between sexes (emerged adults), and within these significant differences among development stage, tissue distribution, fed on phloem of Pinus armandi and topically applied juvenile hormone (JH) III. Increase of DaHMG-S and DaHMG-R mRNA levels in males suggested that they may play a role in mevalonate pathway. Information from the present study might contribute to understanding the relationship between D. armandi and its semiochemical production.
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