Identifying the germline in an equally cleaving mollusc: Vasa and Nanos expression during embryonic and larval development of the vetigastropod Haliotis asinina
Members of the Vasa and Nanos gene families are important for the specification and development of the germline in diverse animals. Here, we determine spatial and temporal expression of Vasa and Nanos to investigate germline development in the vetigastropod Haliotis asinina. This is the first time t...
Published in: | Journal of Experimental Zoology Part B: Molecular and Developmental Evolution |
---|---|
Main Authors: | , , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley-Liss
2010
|
Subjects: | |
Online Access: | https://espace.library.uq.edu.au/view/UQ:206250 |
id |
ftunivqespace:oai:espace.library.uq.edu.au:UQ:206250 |
---|---|
record_format |
openpolar |
spelling |
ftunivqespace:oai:espace.library.uq.edu.au:UQ:206250 2023-05-15T15:58:59+02:00 Identifying the germline in an equally cleaving mollusc: Vasa and Nanos expression during embryonic and larval development of the vetigastropod Haliotis asinina Kranz, Alexandrea M Tollenaere, Alina Norris, Belinda J. Degnan, Bernard M. Degnan, Sandie M. Gunter P. Wagner 2010-06-14 https://espace.library.uq.edu.au/view/UQ:206250 eng eng Wiley-Liss doi:10.1002/jez.b.21336 issn:1552-5007 issn:1552-5015 orcid:0000-0001-7573-8518 orcid:0000-0001-8003-0426 Leech helobdella-robusta Somatic stem-cells Patella-vulgata Conserved role Mesentoblast determination Platynereis-dumerilii Cleavage patterns Crassostrea-gigas Messenger-rna Genes C1 830103 Aquaculture Molluscs (excl. Oysters) 060403 Developmental Genetics (incl. Sex Determination) Journal Article 2010 ftunivqespace https://doi.org/10.1002/jez.b.21336 2020-10-27T00:40:02Z Members of the Vasa and Nanos gene families are important for the specification and development of the germline in diverse animals. Here, we determine spatial and temporal expression of Vasa and Nanos to investigate germline development in the vetigastropod Haliotis asinina. This is the first time these genes have been examined in an equally cleaving lophotrochozoan species. We find that HasVasa and HasNanos have largely overlapping, but not identical, expression patterns during embryonic and larval development, with both being maternally expressed and localized to the micromere cell lineages during cleavage. As embryonic development continues, HasVasa and HasNanos become progressively more enriched in the dorsal quadrant of the embryo. By the trochophore stage, both Has Vasa and HasNanos are expressed in the putative mesodermal bands of the larva. This differs from the unequally cleaving gastropod Illyanasa obsoleta, in which IoVasa and IoNanos expression is detectable only in the early embryo and not during gastrulation and larval development. Our results suggest that the H. asinina germline arises from the 4d cell lineage and that primordial germ cells (PGCs) are not specified exclusively by maternally inherited determinants (preformation). As such, we infer that inductive signals (epigenesis) play an important role in specifying PGCs in H. asinina. We hypothesize that Has Vasa is expressed in a population of undifferentiated multipotent cells, from which the PGCs are segregated later during development. J. Exp. Zool. (Mol. Dev. Eval.) 314B:267-279, 2010. (C) 2010 Wiley-Liss, Inc. Article in Journal/Newspaper Crassostrea gigas The University of Queensland: UQ eSpace Leech ENVELOPE(-99.667,-99.667,-72.250,-72.250) Vasa ENVELOPE(25.177,25.177,67.587,67.587) Journal of Experimental Zoology Part B: Molecular and Developmental Evolution 314B 4 267 279 |
institution |
Open Polar |
collection |
The University of Queensland: UQ eSpace |
op_collection_id |
ftunivqespace |
language |
English |
topic |
Leech helobdella-robusta Somatic stem-cells Patella-vulgata Conserved role Mesentoblast determination Platynereis-dumerilii Cleavage patterns Crassostrea-gigas Messenger-rna Genes C1 830103 Aquaculture Molluscs (excl. Oysters) 060403 Developmental Genetics (incl. Sex Determination) |
spellingShingle |
Leech helobdella-robusta Somatic stem-cells Patella-vulgata Conserved role Mesentoblast determination Platynereis-dumerilii Cleavage patterns Crassostrea-gigas Messenger-rna Genes C1 830103 Aquaculture Molluscs (excl. Oysters) 060403 Developmental Genetics (incl. Sex Determination) Kranz, Alexandrea M Tollenaere, Alina Norris, Belinda J. Degnan, Bernard M. Degnan, Sandie M. Identifying the germline in an equally cleaving mollusc: Vasa and Nanos expression during embryonic and larval development of the vetigastropod Haliotis asinina |
topic_facet |
Leech helobdella-robusta Somatic stem-cells Patella-vulgata Conserved role Mesentoblast determination Platynereis-dumerilii Cleavage patterns Crassostrea-gigas Messenger-rna Genes C1 830103 Aquaculture Molluscs (excl. Oysters) 060403 Developmental Genetics (incl. Sex Determination) |
description |
Members of the Vasa and Nanos gene families are important for the specification and development of the germline in diverse animals. Here, we determine spatial and temporal expression of Vasa and Nanos to investigate germline development in the vetigastropod Haliotis asinina. This is the first time these genes have been examined in an equally cleaving lophotrochozoan species. We find that HasVasa and HasNanos have largely overlapping, but not identical, expression patterns during embryonic and larval development, with both being maternally expressed and localized to the micromere cell lineages during cleavage. As embryonic development continues, HasVasa and HasNanos become progressively more enriched in the dorsal quadrant of the embryo. By the trochophore stage, both Has Vasa and HasNanos are expressed in the putative mesodermal bands of the larva. This differs from the unequally cleaving gastropod Illyanasa obsoleta, in which IoVasa and IoNanos expression is detectable only in the early embryo and not during gastrulation and larval development. Our results suggest that the H. asinina germline arises from the 4d cell lineage and that primordial germ cells (PGCs) are not specified exclusively by maternally inherited determinants (preformation). As such, we infer that inductive signals (epigenesis) play an important role in specifying PGCs in H. asinina. We hypothesize that Has Vasa is expressed in a population of undifferentiated multipotent cells, from which the PGCs are segregated later during development. J. Exp. Zool. (Mol. Dev. Eval.) 314B:267-279, 2010. (C) 2010 Wiley-Liss, Inc. |
author2 |
Gunter P. Wagner |
format |
Article in Journal/Newspaper |
author |
Kranz, Alexandrea M Tollenaere, Alina Norris, Belinda J. Degnan, Bernard M. Degnan, Sandie M. |
author_facet |
Kranz, Alexandrea M Tollenaere, Alina Norris, Belinda J. Degnan, Bernard M. Degnan, Sandie M. |
author_sort |
Kranz, Alexandrea M |
title |
Identifying the germline in an equally cleaving mollusc: Vasa and Nanos expression during embryonic and larval development of the vetigastropod Haliotis asinina |
title_short |
Identifying the germline in an equally cleaving mollusc: Vasa and Nanos expression during embryonic and larval development of the vetigastropod Haliotis asinina |
title_full |
Identifying the germline in an equally cleaving mollusc: Vasa and Nanos expression during embryonic and larval development of the vetigastropod Haliotis asinina |
title_fullStr |
Identifying the germline in an equally cleaving mollusc: Vasa and Nanos expression during embryonic and larval development of the vetigastropod Haliotis asinina |
title_full_unstemmed |
Identifying the germline in an equally cleaving mollusc: Vasa and Nanos expression during embryonic and larval development of the vetigastropod Haliotis asinina |
title_sort |
identifying the germline in an equally cleaving mollusc: vasa and nanos expression during embryonic and larval development of the vetigastropod haliotis asinina |
publisher |
Wiley-Liss |
publishDate |
2010 |
url |
https://espace.library.uq.edu.au/view/UQ:206250 |
long_lat |
ENVELOPE(-99.667,-99.667,-72.250,-72.250) ENVELOPE(25.177,25.177,67.587,67.587) |
geographic |
Leech Vasa |
geographic_facet |
Leech Vasa |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_relation |
doi:10.1002/jez.b.21336 issn:1552-5007 issn:1552-5015 orcid:0000-0001-7573-8518 orcid:0000-0001-8003-0426 |
op_doi |
https://doi.org/10.1002/jez.b.21336 |
container_title |
Journal of Experimental Zoology Part B: Molecular and Developmental Evolution |
container_volume |
314B |
container_issue |
4 |
container_start_page |
267 |
op_container_end_page |
279 |
_version_ |
1766394761095151616 |