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Germline expression of the hunchback orthologues in the asexual viviparous aphids: a conserved feature within the Aphididae.
Chung, C-Y; Hsiao, Y-M; Huang, T-Y; Chang, T-H; Chang, C-C.
Affiliation
  • Chung CY; Laboratory for Genetics and Development, Department of Entomology, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan.
  • Hsiao YM; Research Center for Developmental Biology and Regenerative Medicine, National Taiwan University, Taipei, Taiwan.
  • Huang TY; Laboratory for Genetics and Development, Department of Entomology, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan.
  • Chang TH; Research Center for Developmental Biology and Regenerative Medicine, National Taiwan University, Taipei, Taiwan.
  • Chang CC; Institute of Biotechnology, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan.
Insect Mol Biol ; 27(6): 752-765, 2018 12.
Article in En | MEDLINE | ID: mdl-29892979
In animals, differentiation of germline from soma usually takes place during embryogenesis. Genes and their products that are preferentially expressed in the embryonic germ cells are regarded as candidates for maintaining germline fate or promoting germline identity. In Drosophila, for example, the protein encoded by the germline gene vasa is specifically restricted to the germ cells, while products of the gap gene hunchback (hb), a somatic gene, are preferentially expressed in the neuroblasts. In this study, we report the expression of both messenger RNA and protein encoded by Aphb, an hb orthologue in the asexual viviparous pea aphid Acyrthosiphon pisum, in germ cells as well as in neuroblasts. We infer that expression of Aphb messenger RNA in the germ cells during the formation of germaria is required for the anterior localization of Aphb in the protruding oocytes. Germarial expression and anterior localization of ApKrüppel was also identified but, unlike Aphb, its expression was not detected in the migrating germ cells. Very similar patterns of hb expression were also identified in the green peach aphid Myzus persicae, suggesting that germline expression of hb is conserved within the Aphididae. To date, this pattern of hb germline expression has not been reported in other insects.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Aphids / Insect Proteins / Germ Cells Type of study: Prognostic_studies Limits: Animals Language: En Journal: Insect Mol Biol Journal subject: BIOLOGIA MOLECULAR Year: 2018 Document type: Article Affiliation country: Taiwan Country of publication: United kingdom

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Aphids / Insect Proteins / Germ Cells Type of study: Prognostic_studies Limits: Animals Language: En Journal: Insect Mol Biol Journal subject: BIOLOGIA MOLECULAR Year: 2018 Document type: Article Affiliation country: Taiwan Country of publication: United kingdom