曲率对微生物生长膜的影响

Yuta Kuroda, Takeshi Kawasaki, Andreas M. Menzel
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引用次数: 0

摘要

为了深入了解细菌或其他微生物征服表面时产生的新结构的基本特性,分析它们在薄膜形成过程中的生长行为至关重要。在这方面,许多理论研究都侧重于拉长的直线物体的行为。它们通过体积排斥相互排斥,并在达到某个临界长度时分成两半。然而,在现实中,几乎没有一个具有一定伸长率的物体是完全笔直的。因此,我们在此研究曲率对菌落和活性薄膜生长的影响。特别是,我们分析了这种个体曲率如何影响菌落中定向有序结构域的大小,结果发现这种影响显著减小,相反,堆叠的弯曲细胞串出现了分枝结构。我们的研究结果对于从根本上理解微生物在表面上的相互作用和传播非常重要,对医疗应用和生物工程具有重要意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of curvature on growing films of microorganisms
To provide insight into the basic properties of emerging structures when bacteria or other microorganisms conquer surfaces, it is crucial to analyze their growth behavior during the formation of thin films. In this regard, many theoretical studies focus on the behavior of elongating straight objects. They repel each other through volume exclusion and divide into two halves when reaching a certain threshold length. However, in reality, hardly any object of a certain elongation is perfectly straight. Therefore, we here study the consequences of curvature on the growth of colonies and thin active films. A given amount of curvature is prescribed to each growing individual. Particularly, we analyze how this individual curvature affects the size of orientationally ordered domains in the colony and find a significant decrease. Instead, strings of stacked curved cells emerge that show branched structures. Furthermore, we identify a significant spatio-orientational coupling that is not observed in colonies of straight cells. Our results are important for a fundamental understanding of the interaction and spreading of microorganisms on surfaces, with implications for medical applications and bioengineering.
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