Wsp system oppositely modulates antibacterial activity and biofilm formation via FleQ-FleN complex in Pseudomonas putida.
Wsp system oppositely modulates antibacterial activity and biofilm formation via FleQ-FleN complex in Pseudomonas putida.
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Wsp 系统通过恶臭假单胞菌中的 FleQ-FleN 复合物反向调节抗菌活性和生物膜形成。
DOI:
10.1111/1462-2920.15905
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发表时间:
2022-02
影响因子:
5.1
通讯作者:
Qiaoyun Huang
中科院分区:
文献类型:
--
作者:
Hailing Nie;Yujie Xiao;Miaomiao Song;Nianqi Wu;Qi Peng;Wei Duan;Wenli Chen;Qiaoyun Huang
Type VI secretion systems (T6SS) are specific antibacterial weapons employed by diverse bacteria to protect themselves from competitors. Pseudomonas putida KT2440 possesses a functional T6SS (K1-T6SS) and exhibits antibacterial activity towards a broad range of bacteria. Here we found that the Wsp signal transduction system regulated K1-T6SS expression via synthesizing the second messenger cyclic di-GMP (c-di-GMP), thus mediating antibacterial activity in P. putida. High-level c-di-GMP produced by Wsp system repressed the transcription of K1-T6SS genes in structural operon and vgrG1 operon. Transcriptional regulator FleQ and ATPase FleN functioned as repressors in the Wsp system-modulated K1-T6SS transcription. However, FleQ and FleN functioned as activators in biofilm formation, and Wsp system promoted biofilm formation largely in a FleQ/FleN-dependent manner. Furthermore, FleQ-FleN complex bound directly to the promoter of K1-T6SS structural operon in vitro, and c-di-GMP promoted the binding. Besides, P. putida biofilm cells showed higher c-di-GMP levels and lower antibacterial activity than planktonic cells. Overall, our findings reveal a mechanism by which Wsp system oppositely modulates antibacterial activity and biofilm formation via FleQ-FleN, and demonstrate the relationship between plankton/biofilm lifestyles and antibacterial activity in P. putida.
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影响因子:
6.7
作者:
Wan B;Zhang Q;Ni J;Li S;Wen D;Li J;Xiao H;He P;Ou HY;Tao J;Teng Q;Lu J;Wu W;Yao YF
通讯作者:
Yao YF
影响因子:
10.5
作者:
Silverman JM;Brunet YR;Cascales E;Mougous JD
通讯作者:
Mougous JD
影响因子:
6.7
作者:
Wang T;Si M;Song Y;Zhu W;Gao F;Wang Y;Zhang L;Zhang W;Wei G;Luo ZQ;Shen X
通讯作者:
Shen X
影响因子:
5.1
作者:
Moscoso, Joana A.;Mikkelsen, Helga;Filloux, Alain
通讯作者:
Filloux, Alain
影响因子:
30.3
作者:
Wong, Jocelyn;Chen, Yahua;Gan, Yunn-Hwen
通讯作者:
Gan, Yunn-Hwen