Smart network solutions in an amoeboid organism
Smart network solutions in an amoeboid organism
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DOI：
10.1016/s0301-4622(03)00189-3
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发表时间：
2004-01-01
影响因子：
3.8
通讯作者：
Hara, M
中科院分区：
文献类型：
--
作者：
Nakagaki, T;Yamada, H;Hara, M
我们提出的证据表明，巨大的变形虫生物，真正的黏菌，构建了一个网络，最大限度地提高营养吸收。多头绒泡菌原质团的身体包含管状元件的网络，营养物质和化学信号通过该网络在生物体中循环。当食物颗粒出现在疟原虫上的不同点时，它会在每个颗粒上积累，并有几个管连接疟原虫浓度。网络的几何形状取决于食物源的位置。统计分析表明，网络的几何形状满足智能网络的多个要求：短的总长度的管，所有分支之间的紧密连接（任何两个食物站点之间的少量的过境食物站点）和容忍意外断开的管。这些研究结果表明，疟原虫可以实现一个更好的解决方案的问题的网络配置比所提供的最短连接的施泰纳的最小树。(C)2003 Elsevier B.V.保留所有权利。
We present evidence that the giant amoeboid organism, the true slime mold, constructs a network appropriate for maximizing nutrient uptake. The body of the plasmodium of Physarum polycephalum contains a network of tubular elements by means of which nutrients and chemical signals circulate through the organism. When food pellets were presented at different points on the plasmodium it accumulated at each pellet with a few tubes connecting the plasmodial concentrations. The geometry of the network depended on the positions of the food sources. Statistical analysis showed that the network geometry met the multiple requirements of a smart network: short total length of tubes, close connections among all the branches (a small number of transit food-sites between any two food-sites) and tolerance of accidental disconnection of the tubes. These findings indicate that the plasmodium can achieve a better solution to the problem of network configuration than is provided by the shortest connection of Steiner's minimum tree. (C) 2003 Elsevier B.V. All rights reserved.