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首页> 外文期刊>Eukaryotic cell >The Vacuole System Is a Significant Intracellular Pathway for Longitudinal Solute Transport in Basidiomycete Fungi
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The Vacuole System Is a Significant Intracellular Pathway for Longitudinal Solute Transport in Basidiomycete Fungi

机译：液泡系统是Basidiomycete真菌的纵向溶质运输的重要细胞内途径。

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Mycelial fungi have a growth form which is unique among multicellular organisms. The data presented here suggest that they have developed a unique solution to internal solute translocation involving a complex, extended vacuole. In all filamentous fungi examined, this extended vacuole forms an interconnected network, dynamically linked by tubules, which has been hypothesized to act as an internal distribution system. We have tested this hypothesis directly by quantifying solute movement within the organelle by photobleaching a fluorescent vacuolar marker. Predictive simulation models were then used to determine the transport characteristics over extended length scales. This modeling showed that the vacuolar organelle forms a functionally important, bidirectional diffusive transport pathway over distances of millimeters to centimeters. Flux through the pathway is regulated by the dynamic tubular connections involving homotypic fusion and fission. There is also a strongly predicted interaction among vacuolar organization, predicted diffusion transport distances, and the architecture of the branching colony margin.
机译：菌丝真菌具有在多细胞生物中独特的生长形式。此处提供的数据表明，他们已经开发出了解决内部溶质易位的独特方法，该方法涉及复杂的扩展液泡。在所有检查过的丝状真菌中，这种扩展的液泡形成了一个相互连接的网络，这些网络通过肾小管动态地连接在一起，据推测，它可以充当内部分配系统。我们已经通过光漂白荧光液泡标记物来量化细胞器内溶质的运动，直接检验了这一假设。然后使用预测性仿真模型来确定扩展长度范围内的运输特性。该模型表明，液泡细胞器在毫米到厘米的距离上形成功能上重要的双向扩散运输途径。通过该通路的通量受涉及同型融合和裂变的动态管状连接的调节。在液泡组织，预测的扩散转运距离和分支菌落边缘的结构之间也强烈预测了相互作用。

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