在Lepidoptera中的Opsin基因复制:逆转换,性别联系和基因表达
Peter O Mulhair1, Liam Crowley1, Douglas H Boyes2
1Department of Biology, University of Oxford, Oxford OX1 3SZ, UK.
Molecular biology and evolution
|November 7, 2023
概括
昆虫的进化推动了色彩视觉的变化. 这项研究揭示了众多的素基因重复和表达转移在Lepidoptera,影响视觉适应.
科学领域:
- * 进化生物学 进化生物学
- * 分子遗传学 分子遗传学
- * * 昆虫的视力 昆虫的视力
背景情况:
- * 昆虫的色彩视觉依赖于素蛋白,对不同的光波长敏感.
- * Opsin基因进化 (拷贝数,表达,序列) 影响昆虫的视觉,行为和生态.
- * 蝶 (蝶和蝶) 提供了一个模型来研究视野进化和视觉表型联系.
研究的目的:
- * 调查类动物中素基因含量/序列和视觉表型的进化变化之间的关联.
- * 为了重建一个广泛的类类生物的基因的进化历史.
- *分析选择性压力和基因表达模式的变化.
主要方法:
- * 在33个家族的219个类类动物基因组中对素基因的注释.
- * 素基因进化史的重建.
- * 对跨物种和基因的选择性压力和基因表达的分析.
主要成果:
- * 鉴定了44个素基因复制事件,超过3亿年的类类动物进化.
- * 在Noctuoidea超级家族中发现了一种保存的古老的长波长敏感 (LW) opsin重复,其起源是通过逆转换.
- *观察到保存的LW逆转基因的生命阶段特定表达,表明在幼虫感官功能中的作用.
结论:
- * 斑黄动物表现出高水平的素基因复制和表达模式变化.
- * Opsin进化对和蝶的色彩视觉和适应的多样性作出了重大贡献.
- *古老的LW逆转基因突出显示了保存的进化路径和潜在的特定阶段的感觉作用.
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