Zoology Faculty Work
Title
Analysis of Expressed Sequence Tags from the Placenta of the LiveBearing Fish Poeciliopsis (Poeciliidae)
Document Type
Article
Publication Date
2011
Publication Title
Journal of Heredity
Volume Number
102
Issue Number
3
DOI
10.1093/jhered/esr002
Abstract
Matrotrophic fish in the genus Poeciliopsis (Poeciliidae) have a placenta-like structure used in postfertilization maternal provisioning of the developing embryo. To understand better the structure and function of the Poeciliopsis placenta, we derived cDNA libraries from the maternal follicular placenta of 2 matrotrophic Poeciliopsis sister species, P. turneri and P. presidionis. These species inherited their placenta from a common ancestor and represent one of 3 independent origins of placentas in Poeciliopsis. Expressed sequence tags (ESTs) were generated and putative function was determined using BLASTX homology searches and Gene Ontology (GO) annotation. Reverse transcription–polymerase chain reaction was used to verify placenta tissue expression of a putative candidate gene, alpha-2 macroglobulin. In total, 1956 (71.5% of the total submitted ESTs) and 924 (71.0% of the total submitted ESTs) unique transcripts were identified for the P. turneri and P. presidionis placenta, respectively. Homology search and GO annotation revealed putative genes whose products may be involved in specific transport functions of the maternal follicle. These putative genes are excellent candidates for future research on the evolution of the placenta. We discuss our results in light of the parent–offspring conflict theory of placental evolution and in terms of the Poeciliid placenta structure and function.
ISSN
0022-1503
First Page
352
Last Page
361
Recommended Citation
Panhuis, Tami; Broitman-Maduro, Gina; Uhrig, Jarrod; Maduro, Morris; and Reznick, David, "Analysis of Expressed Sequence Tags from the Placenta of the LiveBearing Fish Poeciliopsis (Poeciliidae)" (2011). Zoology Faculty Work. 29.
https://digitalcommons.owu.edu/zool_pubs/29
Link Out URL
https://doi.org/10.1093/jhered/esr002