title: Molecular characterization and expression profiles of neuropeptide precursors in the migratory locust.
abstract: Neuropeptides serve as the most important regulatory signals in insects. Many neuropeptides and their precursors have been identified in terms of the contig sequences of whole genome information of the migratory locust (Locusta migratoria), which exhibits a typical phenotypic plasticity in morphology, behavior and physiology. However, functions of these locust neuropeptides are largely unknown. In this study, we first revised the 23 reported neuropeptide precursor genes and identified almost all the neuropeptide precursors and corresponding products in L. migratoria. We further revealed the significant expansion profiles (such as AKH) and alternative splicing of neuropeptide genes (Lom-ITP, Lom-OK and Lom-NPF1). Transcriptomic analysis indicated that several neuropeptides, such as Lom-ACP and Lom-OK, displayed development-specific expression patterns. qRT-PCR data confirmed that most neuropeptide precursors were strongly expressed in the central nervous system. Fifteen neuropeptide genes displayed different expression levels between solitarious and gregarious locusts. These findings provide valuable clues to understand neuropeptide evolution and their functional roles in basic biology and phase transition in locusts.
authors.affiliation: State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.
authors.forename: Li
authors.initials: L
authors.lastname: Hou
authors.affiliation: Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing 100101, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Jiang
authors.affiliation: Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing 100101, China.
authors.forename: Pengcheng
authors.initials: P
authors.lastname: Yang
authors.affiliation: State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China. Electronic address: wangxh@ioz.ac.cn.
authors.forename: Xianhui
authors.initials: X
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing 100101, China. Electronic address: lkang@ioz.ac.cn.
authors.forename: Le
authors.initials: L
authors.lastname: Kang
mesh_terms: D017398:Alternative Splicing; D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002490:Central Nervous System / Q000378:metabolism; D019476:Insect Proteins / Q000737:chemistry / Q000235:genetics; D048188:Locusta migratoria / Q000737:chemistry / Q000235:genetics*; D008969:Molecular Sequence Data; D009479:Neuropeptides / Q000235:genetics*; D010641:Phenotype; D011498:Protein Precursors / Q000737:chemistry / Q000235:genetics*; D059467:Transcriptome
chemical_list: D019476:Insect Proteins; D009479:Neuropeptides; D011498:Protein Precursors
keywords: Expression pattern; Migratory locust; Peptides; Polyphenism