Current microbiology. 2025 May 28;82(7):313. doi: 10.1007/s00284-025-04288-w Q32.62025
Salt-induced Reduction of Hyperswarming Motility in Bacillus cereus MHS is Associated with Reduction in Flagellation, Nanotube Formation and Quorum Sensing Regulator plcR
盐诱导的枯草芽孢杆菌MHS超群落运动减少与鞭毛形成、纳米管生成以及群体感应调节因子plcR降低相关性研究 翻译改进
Nirbhay K Bhadani 1, Kritika Prasad 1, Nisha Gupta 1, Hemanta Sarmah 1, Tapas K Sengupta 2
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DOI: 10.1007/s00284-025-04288-w PMID: 40437124
摘要 中英对照阅读
细菌已知能够在具有挑战性的生态环境中通过各种现象存活。群集运动是这类有利适应之一，能够帮助细菌在极端条件下生存。因此，针对群集运动的研究对于提高我们对细菌运动的理解以及防止相关感染至关重要。枯草芽孢杆菌（Bacillus cereus）是一种引起食物中毒的病原菌，并且已经证实它具有群集运动的能力。盐类如氯化钠可以作为食品防腐剂来控制细菌生长。为了探讨盐的存在如何影响枯草芽孢杆菌MHS菌株（一种自然分离的、超群集型的Bacillus cereus）的群集运动，本研究考察了NaCl对Luria琼脂平板上MHS菌株群集运动特征的影响。我们发现，在培养基中增加NaCl浓度会导致MHS菌株的群集运动能力和模式减少。这种观察到的群集运动能力下降与鞭毛形成减少以及细菌纳米管数量减少有关。基因表达研究也支持了这一表型和超结构观测结果，因为在高盐环境中，参与鞭毛和纳米管形成的bfla和ymdB基因的表达量均有所降低。此外，还观察到MHS菌株群集运动能力因盐诱导而下降与群体感应调节基因plcR表达减少有关。本研究首次报道了枯草芽孢杆菌中存在细菌纳米管，并暗示了细菌纳米管形成与其超群集表型之间的可能联系。
© 2025. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
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Salt-induced Reduction of Hyperswarming Motility in Bacillus cereus MHS is Associated with Reduction in Flagellation, Nanotube Formation and Quorum Sensing Regulator plcR