青春期激素作为在中不对称的种姓差异化的关键调节剂
Ruyan Li1, Xueqin Dai2,3, Jixuan Zheng4
1Section for Ecology and Evolution, Department of Biology, University of Copenhagen, Copenhagen 2100, Denmark.
概括
青春激素 (JH) 可以诱导工人发展类似女王的体质特征,但不是生殖器官. 这揭示了种姓差异化的发展约束,转移JH.
科学领域:
- 发育生物学是发展生物学.
- 昆虫学 昆虫学是一门学科.
- 社会昆虫内分泌学 社会昆虫内分泌学
背景情况:
- 社会昆虫的种姓差异化创造了专门的角色.
- 了解发育可塑性是社会进化的关键.
- 青春激素 (JH) 是昆虫发育的关键调节者.
研究的目的:
- 调查青春激素 (JH) 是否可以诱导工人的女王状 (gyne) 发育.
- 识别种姓可塑性的发展约束和分子机制.
- 探索JH在超级生物体体和生殖系分化中的作用.
主要方法:
- 用过多的青春激素 (JH) 治疗 *Monomorium pharaonis* 幼虫.
- 成年工人表型的形态分析.
- 针对JH治疗的基因表达特征分析.
- 生殖组织的组织学检查.
主要成果:
- 过多的JH诱导了类似妇科的身体特征的发展,包括翅膀,飞行肌肉和特定的大脑区域.
- 卵巢发育仍然没有对JH治疗产生反应,这表明早期的生殖线封存.
- 鉴定出了JH敏感基因,这些基因调解了体质性妇科分化.
- 发育可塑性受到限制,而不依赖于身体大小.
结论:
- 青春激素 (JH) 可以诱导体质种姓差异化,但不能诱导工人的生殖线成熟.
- 生殖线封存是一种早期的,不可逆转的发育事件,先于JH介导的体质分化.
- 在高度多妻的社会昆虫中,JH在繁殖中的作用从个体到殖民地层面发生变化.
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