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首页> 外文期刊>Animal Science Journal >Red jungle fowl (Gallus gallus) as a model for studying the molecular mechanism of seasonal reproduction
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Red jungle fowl (Gallus gallus) as a model for studying the molecular mechanism of seasonal reproduction

机译：红丛林鸡（Gallus gallus）作为研究季节性繁殖的分子机制的模型

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Photoperiodism is an adaptation mechanism that enables animals to predict seasonal changes in the environment. Japanese quail is the best model organism for studying photoperiodism. Although the recent availability of chicken genome sequences has permitted the expansion from single gene to genome-wide transcriptional analysis in this organism, the photoperiodic response of the domestic chicken is less robust than that of the quail. Therefore, in the present study, we examined the photoperiodic response of the red jungle fowl (Gallus gallus), a predecessor of the domestic chicken, to test whether this animal could be developed as an ideal model for studying the molecular mechanisms of seasonal reproduction. When red jungle fowls were transferred from short-day- to long-day conditions, gonadal development and an increase in plasma LH concentration were observed. Furthermore, rapid induction of thyrotropin beta subunit, a master regulator of photoperiodism, was observed at 16 h after dawn on the first long day. In addition, the long-day condition induced the expression of type 2 deiodinase, the key output gene of photoperiodism. These results were consistent with the results obtained in quail and suggest that the red jungle fowl could be an ideal model animal for the genome-wide transcriptional analysis of photoperiodism.
机译：光周期症是一种适应性机制，可使动物预测环境的季节性变化。日本鹌鹑是研究光周期症的最佳模型生物。尽管最近获得的鸡基因组序列已允许该生物从单基因扩展到全基因组转录分析，但家禽的光周期反应不如鹌鹑强。因此，在本研究中，我们研究了家养鸡的前身红色丛林鸡（Gallus gallus）的光周期反应，以测试该动物是否可以开发为研究季节性繁殖的分子机制的理想模型。当红色的家禽从短日到长日转移时，观察到性腺发育和血浆LH浓度增加。此外，在第一个漫长的天黎明后16小时，观察到促甲状腺素β亚基（光周期的主要调节剂）的快速诱导。此外，长期的条件诱导了2型脱碘酶的表达，这是光周期的关键输出基因。这些结果与在鹌鹑中获得的结果一致，并表明红色的野禽可能是光周期全基因组转录分析的理想模型动物。

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