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在发育早期经历短热浪会改变乌胚胎对后来的热浪的热响应能力
Anthony T Breitenbach1,2, Rosario A Marroquín-Flores1,3, Ryan T Paitz1
1School of Biological Sciences, Illinois State University, Normal, IL 61790, USA.
The Journal of experimental biology
|September 4, 2023
概括
热变性对温度依赖性性别决定 (TSD) 的物种产生影响. 在化过程中相互冲突的温度线索延迟了乌的淋巴腺发育承诺,显示早期暴露于热量会改变后来的反应.
科学领域:
- 环境科学 环境科学
- 发展生物学 发展生物学
- 遗传学 是一个遗传学.
背景情况:
- 对热环境的生理反应通常在恒温下进行研究.
- 热变性对于预测物种对气候变化的反应至关重要,特别是对于热敏感物种.
- 温度依赖性性别决定 (TSD) 涉及基因调解淋巴体的分化,以应对化温度.
研究的目的:
- 研究化温度的波动如何影响红耳滑 (Trachemys scripta) 发生性腺发育承诺和分子反应.
- 了解相互冲突的热线索对生殖腺命运承诺的时间的影响.
- 分析胚胎发育过程中对热线 (包括热浪) 的快速分子反应.
主要方法:
- 利用波动的化温度来模拟环境的变化.
- 采用基因表达分析作为代码来确定对淋巴体命运的承诺时间.
- 研究了参与淋巴体分化的特定基因 (Kdm6b,Dmrt1,FoxL2,Cyp19A1) 的表达.
主要成果:
- 在发育过程中暴露于显著的相互冲突的热线索,延迟了对生殖腺命运的承诺.
- Kdm6b拼接变体对早期热浪暴露的反应不同,但在两天内恢复.
- 尽管Kdm6b拼接变体的变化,但没有观察到对Dmrt1表达的显著影响.
结论:
- 相互冲突的热线可以延迟TSD物种的淋巴体发育承诺.
- 在发育早期短期暴露于热量会改变胚胎随后的热反应.
- 了解这些分子和发育反应对于预测物种适应气候变化的情况至关重要.
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