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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Chen, Yuan Hong, Wan Shu Wang, Qiong Chen, Shi Xi |
| Description | Country affiliation: China Author Affiliation: Chen Y ( State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China); Hong WS ( State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China); Wang Q ( State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China); Chen SX ( State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China) |
| Abstract | Gonadal soma-derived factor (gsdf) is a teleost- and gonad-specific growth factor involved in early germ cell development. The red spotted grouper, Epinephelus akaara, as a protogynous hermaphrodite, provides a novel model for understanding the mechanisms of sex determination and differentiation in teleosts. In the present study, a 2307-bp long gsdf gene was cloned from E. akaara and there was further analysis of its tissue distribution and gonadal patterns of gene expression during the female phase and sex change developmental stages. The cellular localization of gsdf at the late transitional developmental stage was also analyzed. In addition, the concentrations of serum sex steroid hormones (E2, 11-KT and DHP) were determined. The gsdf transcripts were exclusively localized in the gonad. During the female phase at an early developmental stage, when the ovotestis contained mainly oogonia and primary growth oocytes, the gsdf mRNA was relatively more abundant. The relative abundance of gsdf decreased, however, and the lesser amount was sustained with the advancement of oocyte development. During the transitional phase, the relative abundance of gsdf mRNA increased slightly at the early developmental stage and there were further increases in relative abundance in the late developmental stage, and the gsdf transcripts were observed in the Sertoli cells surrounding early developing spermatogonia. Among the sex steroids, 11-KT concentrations were positively correlated with amount of gsdf mRNA during sex change. These results suggest that gsdf could have roles in regulating pre-meiotic germ cell proliferation and be involved in sex change in E. akaara. |
| File Format | HTM / HTML |
| ISSN | 03784320 |
| Volume Number | 165 |
| e-ISSN | 18732232 |
| Journal | Animal Reproduction Science |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2016-02-01 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Animal science Discipline Reproductive Medicine Discipline Veterinary Medicine Discipline Zoology Cloning, Molecular Fishes Physiology Gene Expression Regulation, Developmental Gonads Growth & Development Hermaphroditic Organisms Metabolism Intercellular Signaling Peptides And Proteins Algestone Blood Amino Acid Sequence Animals Estradiol Female Genetics Molecular Sequence Data Phylogeny Rna, Messenger Real-time Polymerase Chain Reaction Testosterone Analogs & Derivatives Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Animal Science and Zoology Endocrinology Food Animals |
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