Sun Lei, Wen Xiao, Li Lei, Li Min, Xing Xiaodong, Zhang Zhiyong, Dong Chen
Laboratory of Virtual Reality and Simulation Technology, Shandong Sport University, Jinan, 250102, China.
Division of Life Sciences and Medicine, School of Life Sciences, University of Science and Technology of China, Hefei, 230026, China.
Sci Rep. 2025 Aug 13;15(1):29685. doi: 10.1038/s41598-025-15675-5.
Bacterial diversity has been found in indoor stadiums which can be considered as a specific nutrient-deficient environment (NDE), it remains a mystery and opens to new ideas why the bacterial diversity can be formed and maintained in NDE of indoor stadiums, since it is obvious to violate the famous competitive exclusion principle (CEP) in ecology. In the article, five most common genera, Pseudomonas, Acinetobacter, Exiguobacterium, Sphingobacterium, Chryseobacterium in indoor stadiums were selected and periodically sampled to supervise the dynamic characteristics of bacterial community. Based on quorum sensing (QS) and non-monotonic interspecific interaction (NMII) in combination with microbial ecology, clustering analysis and experimental observation, a new hypothesis was put forward to elucidate QS and NMII of substrate location information (SLI) mechanism driving bacterial community succession with high diversity in NDE of indoor stadium. A valid cellular automation (CA) model was derived from assumptions directly, and the CA simulation sufficiently proved that QS and NMII of SLI can effectively weaken interspecific competition to drive the spatiotemporal succession of bacterial community in NDE of indoor stadium towards a climax community with high richness and evenness, namely bacterial diversity. The succession mechanism confirmed by CA simulation can set up a theoretical framework for comprehensive apprehension about ecological effect of QS with NMII of SLI sharing on formation and sustenance of bacterial diversity in NDE of indoor stadium.
在可被视为特定营养缺乏环境（NDE）的室内体育场中发现了细菌多样性。室内体育场的NDE中细菌多样性为何能够形成并维持仍是一个谜，有待新的见解，因为这显然违背了生态学中著名的竞争排斥原理（CEP）。在本文中，选取了室内体育场中最常见的五个属，即假单胞菌属、不动杆菌属、微小杆菌属、鞘氨醇杆菌属、金黄杆菌属，并进行定期采样，以监测细菌群落的动态特征。基于群体感应（QS）和非单调种间相互作用（NMII），结合微生物生态学、聚类分析和实验观察，提出了一个新的假说，以阐明底物定位信息（SLI）机制的QS和NMII驱动室内体育场NDE中具有高多样性的细菌群落演替。直接从假设中推导得出了一个有效的细胞自动机（CA）模型，CA模拟充分证明，SLI的QS和NMII能够有效减弱种间竞争，从而驱动室内体育场NDE中的细菌群落时空演替，形成一个具有高丰富度和均匀度的顶级群落，即细菌多样性。CA模拟所证实的演替机制可为全面理解SLI共享的QS与NMII对室内体育场NDE中细菌多样性的形成和维持的生态效应建立一个理论框架。
