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Autoinducer-2 relieves soil stress-induced dormancy of Bacillus velezensis by modulating sporulation signaling

文献类型: 外文期刊

作者: Xiong, Qin 1 ; Zhang, Huihui 4 ; Shu, Xia 2 ; Sun, Xiting 2 ; Feng, Haichao 4 ; Xu, Zhihui 4 ; Kovacs, Akos T. 5 ; Zhang, Ruifu 2 ; Liu, Yunpeng 2 ;

作者机构: 1.Gannan Normal Univ, Natl Engn Res Ctr Navel Orange, Ganzhou 341000, Peoples R China

2.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, State Key Lab Efficient Utilizat Arid & Semiarid A, Beijing 100081, Peoples R China

3.Gannan Normal Univ, Jiangxi Prov Key Lab Pest & Dis Control Featured H, Gznzhou, Peoples R China

4.Nanjing Agr Univ, Natl Engn Res Ctr Organ Based Fertilizers, Jiangsu Collaborat Innovat Ctr Solid Organ Waste R, Jiangsu Prov Key Lab Organ Solid Waste Utilizat, Nanjing 210095, Peoples R China

5.Leiden Univ, Inst Biol, Fac Sci, Sylviusweg 73, NL-2333 BE Leiden, Netherlands

6.Tech Univ Denmark, DTU Bioengn, DK-2800 Lyngby, Denmark

期刊名称:NPJ BIOFILMS AND MICROBIOMES ( 影响因子:9.2; 五年影响因子:9.9 )

ISSN:

年卷期: 2024 年 10 卷 1 期

页码:

收录情况: SCI

摘要: The collective behavior of bacteria is regulated by quorum sensing (QS). Autoinducer-2 (AI-2) is a common QS signal that regulates the behavior of both Gram-positive and Gram-negative bacteria. Despite the plethora of processes described to be influenced by AI-2 in diverse Gram-negative bacteria, the AI-2-regulated processes in Bacilli are relatively unexplored. Here, we describe a novel function for AI-2 in Bacillus velezensis SQR9 related to the sporulation. AI-2 inhibited the initiation of sporulation through the phosphatase RapC and the DNA binding regulator ComA. Using biochemistry experiments, we demonstrated that AI-2 interacts with RapC to stimulate its binding to ComA, which leads to an inactive ComA and subsequently a sporulation inhibition. The AI-2 molecule could be shared across species for inhibiting Bacillus sporulation and it also plays the same role in different soil conditions. Our study revealed a novel function and regulatory mechanism of AI-2 in inhibiting sporulation in Bacilli.

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