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进化新型延伸的生长动态和分子基础在半和针鱼 (Beloniformes) 中

Ralf F Schneider^1,2, Helen M Gunter¹, Inken Salewski¹

¹Lehrstuhl für Zoologie und Evolutionsbiologie, Department of Biology, University of Konstanz, Konstanz, Germany.

Molecular ecology

|September 26, 2023

概括

进化上的新奇事物,比如白鱼的长长,源自独特的细胞群. 这些多能细胞驱动下延伸的生长,为适应性辐射提供了洞察力.

科学领域:

发展生物学发展生物学
进化生物学进化生物学
鱼类学鱼类学鱼类学

背景情况:

进化新,缺少明显祖先同质性的特征,可以推动生态专业化和适应性辐射.
贝洛诺鱼类 (如飞鱼,半嘴鱼,针鱼) 呈现出显著的下延长,这是一个不清楚进化起源的特征.
了解这些新鲜事物的发展基础对于进化研究至关重要.

研究的目的:

为了研究贝洛诺鱼的长长的下巴背后的发育机制.
描述细胞和分子过程,驱动半和针鱼的延伸生长.
识别潜在的受保护的调节途径,参与进化新的形成.

主要方法:

在Dermogenys pusilla (半嘴) 和Xenentodon cancila (针鱼) 中,下发育的比较形态学.
转录形状分析以识别与大延伸相关的基因表达模式.
在发育过程中进行in situ杂交,以定位细胞群和基因活动.

主要成果:

贝洛诺伊德长长的下巴由不同的底部和新的"延伸"部分组成,这对于这个血统来说是独有的.
延伸生长是由从牙尖前部迁移和增殖的多能细胞驱动的.
这些细胞最初被屏蔽免于分化,后来形成具有骨和软骨特征的矿化基质.

结论:

贝洛诺鱼的长长的下巴代表了一个具有独特发育起源的进化新奇.
多能细胞群体在这些延伸的全米生长中发挥着关键作用.
这些发现表明,潜在的保守分子机制是这种进化新奇事物的发展的基础,可能与像鱼群这样的结构共享.

关键词:

进化的新奇性进化的新奇性一半的嘴巴半的嘴巴不同时代的异时代性的发展的发展针头鱼针头鱼是一种鱼类.翻译学翻译学翻译学翻译学

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