Articles | Volume 63, issue 2
https://doi.org/10.5194/aab-63-451-2020
https://doi.org/10.5194/aab-63-451-2020
Original study
 | 
09 Dec 2020
Original study |  | 09 Dec 2020

Expression analysis of DIO2, EYA3, KISS1 and GPR54 genes in year-round estrous and seasonally estrous rams

Qing Xia, Ran Di, Xiao-Yun He, Cai-Hong Wei, and Ming-Xing Chu

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Cited articles

An, X. J., Pan, Z. Y., Zhao, S. G., Li, C. Y, Tian, Z. L., Di, R., Liu, Q. Y, Hu, W. P., Wang, X. Y., Zhang, X. S., Zhang, J. L., Cai, Y., and Chu, M. X.: Expression of KiSS-1 and RFRP-3 in Small Tail Han sheep at luteal and follicular periods, Journal of China Agricultural University, 24, 88–96, https://doi.org/10.11841/j.issn.1007-4333.2019.02.09, 2019a. 
An, X. J., Zhao, S. G., Pan, Z. Y., Tian, Z. L., Zhang, X. S., Zhang, J. L., Cai, Y., and Chu, M. X.: Tissue expression of DIO2 and DIO3 in Small Tail Han sheep at luteal and follicular periods, Chinese Journal of Animal Science, 55, 73–77, https://doi.org/10.19556/j.0258-7033.2019-01-068, 2019b. 
Colledge, W. H.: GPR54 and kisspeptins: Results, Probl. Cell. Differ., 46, 117–143, https://doi.org/10.1007/400_2007_050, 2008. 
Dardente, H., Hazlerigg, D. G., and Ebling, F. J. P.: Thyroid hormone and seasonal rhythmicity. Front. Endocrinol (Lausanne), 5, 19, https://doi.org/10.3389/fendo.2014.00019, 2014. 
Dardente, H., Lomet, D., Chesneau, D., Pellicer-Rubio, M. T., and Hazlerigg, D.: Discontinuity in the molecular neuroendocrine response to increasing daylengths in Ile-de-France ewes: is transient Dio2 induction a key feature of circannual timing? J. Neuroendocrinol., 31, e12775, https://doi.org/10.1111/jne.12775, 2019. 
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Short summary
The expression patterns of the HPG axis-related genes in rams were analyzed using qPCR. It showed that DIO2 and KISS1 were mainly expressed in pituitary and hypothalamus in both breeds, respectively. EYA3 and GPR54 were widely expressed in both breeds, with significant differences in testis and vas deferens. We speculated that the four genes may regulate the estrous mode in different regions in rams. This is the first study to analyze the expression patterns of HPG axis-related genes in rams.