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Vasa expression and germ-cell specification in the spider mite tetranychus urticae
- Source :
- Scopus-Elsevier, RIUR. Repositorio Institucional de la Universidad de La Rioja, instname, RIUR: Repositorio Institucional de la Universidad de La Rioja, Universidad de La Rioja (UR)
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Abstract
- The specification of germ cells is an important process during the development of all animals. Expression of an evolutionarily conserved gene such as vasa can be used as a marker for germ cell fate. We have isolated a vasa-related gene from the two-spotted spider mite (Tetranychus urticae) and used it to examine the segregation of germ cells in this animal. In spider mites, vasa expression first appears in a group of cells that do not join the initial blastoderm surface. Instead, these cells remain in the interior of the blastoderm and then migrate to posterior regions of the embryo, where they form a cluster that appears in regions of the embryo consistent with the gonads. The expression pattern of this spider mite vasa homologue implies a novel process acts to specify germ cells in this species and that the specification of germ cells is an evolutionarily labile process.
- Subjects :
- endocrine system
Evolution
Molecular Sequence Data
Genes, Insect
Development
Spider mite
Botany
Genetics
medicine
Animals
Vasa
Blastoderm
Tetranychus urticae
Amino Acid Sequence
Gene
Phylogeny
Chelicerate
Regulation of gene expression
Mites
biology
Sequence Homology, Amino Acid
urogenital system
fungi
Gene Expression Regulation, Developmental
Embryo
biology.organism_classification
Cell biology
medicine.anatomical_structure
Germ Cells
Insect Proteins
Developmental biology
Germ cell
RNA Helicases
Developmental Biology
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Scopus-Elsevier, RIUR. Repositorio Institucional de la Universidad de La Rioja, instname, RIUR: Repositorio Institucional de la Universidad de La Rioja, Universidad de La Rioja (UR)
- Accession number :
- edsair.doi.dedup.....93919d6ee8d4553b1576f4025321671f