Heat stress-induced alterations in the expression of genes associated with gonadal integrity of the teleost Puntius sophore.

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ID: 32785
2019
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Abstract
Temperature plays an important role on reproductive physiology of vertebrates including mammals, fish, and birds. It has varying effects on fish reproduction depending on the species; higher temperatures favor the spring-spawning species, while lower temperatures stimulate reproduction in autumn spawners. To evaluate the impact of high temperature on the reproductive physiology of minnow Puntius sophore, we carried out expression analysis of selected genes associated with gamete quality (hsp60, hsp70, hsp90, hsf1, vtg), pleuripotency (sox2, oct4, nanog), and sex determination (dmrt1) in gonads (ovary and testis) of P. sophore, heat stressed for different time periods (36 °C/7 days or 60 days) using real-time quantitative polymerase chain reaction (RT-qPCR). Expression of most of the hsp, vtg, and pleuripotency marker genes sox-2, oct-4, and nanog genes was downregulated in both ovary and testis of heat-stressed fish. The expression of dmrt-1 was upregulated in testis but downregulated in ovary of the heat-stressed fish which could be a male favoring effect of high temperature in P. sophore. This study suggests that the reproductive physiology and health of the nutrient dense P. sophore would be negatively affected by high temperature stress.
Reference Key
mahanty2019heatfish Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Mahanty, Arabinda;Purohit, Gopal Krishna;Mohanty, Sasmita;Mohanty, Bimal Prasanna;
Journal Fish physiology and biochemistry
Year 2019
DOI
10.1007/s10695-019-00643-4
URL
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