Developmental Robustness: The Haltere Case in Drosophila.

Developmental Robustness: The Haltere Case in Drosophila.
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发育鲁棒性:果蝇中的吊带案。

DOI:
10.3389/fcell.2021.713282
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发表时间:
2021
影响因子:
5.5
通讯作者:
Merabet S
Merabet S
中科院分区:
生物学2区
文献类型:
--
作者:
Giraud G;Paul R;Duffraisse M;Khan S;Shashidhara LS;Merabet S

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发育过程必须是稳健的,但也必须足够灵活,以应对遗传和环境的变化。已经描述了不同的机制来解释发育稳健性和可塑性的明显拮抗性质。在这里,我们提出了一个“自给自足”的分子模型来解释一个特定的飞行器官,是在果蝇的Hox基因Ultrabithorax(UBX)的控制下的发展。我们的模型是基于候选RNAi筛选和其他遗传分析,所有这些都收敛到Ubx的自主和辅因子独立的作用模式。我们假设,这种自给自足的分子机制是可能的,由于异常高的Hox蛋白的表达水平。我们认为,高剂量可能构成一个迄今为止研究不足的分子策略,使Hox蛋白在进化过程中既创新又稳定新的形式。
Developmental processes have to be robust but also flexible enough to respond to genetic and environmental variations. Different mechanisms have been described to explain the apparent antagonistic nature of developmental robustness and plasticity. Here, we present a “self-sufficient” molecular model to explain the development of a particular flight organ that is under the control of the Hox gene Ultrabithorax (Ubx) in the fruit fly Drosophila melanogaster. Our model is based on a candidate RNAi screen and additional genetic analyses that all converge to an autonomous and cofactor-independent mode of action for Ubx. We postulate that this self-sufficient molecular mechanism is possible due to an unusually high expression level of the Hox protein. We propose that high dosage could constitute a so far poorly investigated molecular strategy for allowing Hox proteins to both innovate and stabilize new forms during evolution.
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发表时间: 2007-02-15
影响因子: 2.7
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