Abiotic factors modulate interspecies competition mediated by the type VI secretion system effectors in Vibrio cholerae

Tang, Ming-Xuan1; Pei, Tong-Tong1; Xiang, Qi2; Wang, Zeng-Hang1; Luo, Han1; Wang, Xing-Yu1; Fu, Yang2; Dong, Tao1,3

2022-03-01

10.1038/s41396-022-01228-5

ISME Journal   影响因子和分区

1751-7362

1751-7370

Vibrio cholerae, the etiological pathogen of cholera, employs its type VI secretion system (T6SS) as an effective weapon to survive in highly competitive communities. Antibacterial and anti-eukaryotic functions of the T6SS depend on its secreted effectors that target multiple cellular processes. However, the mechanisms that account for effector diversity and different effectiveness during interspecies competition remain elusive. Here we report that environmental cations and temperature play a key role in dictating cellular response and effector effectiveness during interspecies competition mediated by the T6SS of V. cholerae. We found that V. cholerae could employ its cell-wall-targeting effector TseH to outcompete the otherwise resistant Escherichia coli and the V. cholerae immunity deletion mutant increment tsiH when Mg2+ or Ca2+ was supplemented. Transcriptome and genetic analyses demonstrate that the metal-sensing PhoPQ two-component system is important for Mg2+-dependent sensitivity. Competition analysis in infant mice shows that TseH was active under in vivo conditions. Using a panel of V. cholerae single-effector active mutants, we further show that E. coli also exhibited variable susceptibilities to other T6SS effectors depending on cations and temperatures, respectively. Lastly, V. cholerae effector VasX could sensitize Pseudomonas aeruginosa to its intrinsically resistant antibiotic irgasan in a temperature-dependent manner. Collectively, these findings suggest that abiotic factors, that V. cholerae frequently encounters in natural and host environments, could modulate cellular responses and dictate the competitive fitness conferred by the T6SS effectors in complex multispecies communities.

SCI

英语

NI论文

通讯

National Key R&D Program of China[2020YFA0907200] ; National Natural Science Foundation of China[31770082,32030001] ; Shenzhen Science and Technology Program["JCYJ20210324115611032","KQTD20200909113758004"]

Environmental Sciences & Ecology ; Microbiology

Ecology ; Microbiology

WOS:000775769700002

SPRINGERNATURE

Web of Science

1.Shanghai Jiao Tong Univ, Sch Life Sci & Biotechnol, State Key Lab Microbial Metab, Joint Int Res Lab Metab & Dev Sci, Shanghai, Peoples R China
2.Southern Univ Sci & Technol, Sch Med, Shenzhen, Peoples R China
3.Southern Univ Sci & Technol, Sch Life Sci, Dept Immunol & Microbiol, Shenzhen, Peoples R China

Tang, Ming-Xuan,Pei, Tong-Tong,Xiang, Qi,et al. Abiotic factors modulate interspecies competition mediated by the type VI secretion system effectors in Vibrio cholerae[J]. ISME Journal,2022.

Tang, Ming-Xuan.,Pei, Tong-Tong.,Xiang, Qi.,Wang, Zeng-Hang.,Luo, Han.,...&Dong, Tao.(2022).Abiotic factors modulate interspecies competition mediated by the type VI secretion system effectors in Vibrio cholerae.ISME Journal.

Tang, Ming-Xuan,et al."Abiotic factors modulate interspecies competition mediated by the type VI secretion system effectors in Vibrio cholerae".ISME Journal (2022).