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在鱼物种之间神经节目的遗传和发育差异

Aleksandra Marconi¹, Grégoire Vernaz², Achira Karunaratna¹

¹Department of Zoology, University of Cambridge, Cambridge, UK.

Molecular biology and evolution

|October 16, 2024

概括

神经细胞驱动脊椎动物的进化,像sox10这样的基因变异有助于类动物的物种多样性. 这项研究突出了神经的演变如何塑造面和色素差异.

科学领域:

进化发育生物学进化发育生物学
进行比较的基因组学.
脊椎动物的胚胎学

背景情况:

神经 (NC) 细胞对于脊椎动物的发育至关重要,形成像面骨和色素模式这样的结构.
在产生物种多样性,特别是脊椎动物中,NC进化的作用尚不清楚.

研究的目的:

调查鱼中NC遗传程序的演变,以了解形态分歧.
识别参与NC发展的基因,特别是sox10类基因,以及它们对特定物种特征的贡献.

主要方法:

在非洲类物种中比较转录组学和种群基因组学.
分析基因表达的差异在somitogenesis期间.
在CRISPR/Cas9的突变发生过程中,研究了Sox10的对功能.

主要成果:

与NC发展相关的转录景观的显著差异在类物种中被发现.
特定于Teleost的sox10对应物 (sox10a和sox10b) 显示了时空变化和积极选择的迹象.
在sox10对应物之间观察到功能差异,sox10a获得了新的骨性作用.

结论:

神经的进化,特别是涉及xox10基因,在产生脊椎动物物种之间的形态多样性方面发挥着重要作用.
索克斯10类比生物的功能进化在整个远星系系学上有所不同,有助于产生物种特有的特征,如面结构和色素.

关键词:

类鱼类鱼类类鱼类进化发育生物学进化发育生物学基因复制是基因的复制.神经细胞生物学神经细胞生物学

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