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Zhang Y, Wang L, Chen L, Zhu P, Huang N, Chen T, Chen L, Wang Z, Liao W, Cao J, Zhou T. Novel Insight of Transcription Factor PtrA on Pathogenicity and Carbapenems Resistance in Pseudomonas aeruginosa. Infect Drug Resist 2022; 15:4213-4227. [PMID: 35959145 PMCID: PMC9359796 DOI: 10.2147/idr.s371597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 07/23/2022] [Indexed: 11/23/2022] Open
Affiliation(s)
- Ying Zhang
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, People’s Republic of China
| | - Lingbo Wang
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, People’s Republic of China
| | - Liqiong Chen
- Department of Medical Laboratory Science, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Peiwu Zhu
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, People’s Republic of China
| | - Na Huang
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, People’s Republic of China
| | - Tao Chen
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, People’s Republic of China
| | - Lijiang Chen
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, People’s Republic of China
| | - Zhongyong Wang
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, People’s Republic of China
| | - Wenli Liao
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, People’s Republic of China
| | - Jianming Cao
- Department of Medical Laboratory Science, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, People’s Republic of China
- Jianming Cao, Department of Medical Laboratory Science, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, 325035, People’s Republic of China, Tel +86-577-88069595, Email
| | - Tieli Zhou
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, People’s Republic of China
- Correspondence: Tieli Zhou, Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, 325035, People’s Republic of China, Tel +86-577-8668-9885, Email
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Anderson AJ, Kim YC. Insights into plant-beneficial traits of probiotic Pseudomonas chlororaphis isolates. J Med Microbiol 2020; 69:361-371. [DOI: 10.1099/jmm.0.001157] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Pseudomonas chlororaphisisolates have been studied intensively for their beneficial traits.P. chlororaphisspecies function as probiotics in plants and fish, offering plants protection against microbes, nematodes and insects. In this review, we discuss the classification ofP. chlororaphisisolates within four subspecies; the shared traits include the production of coloured antimicrobial phenazines, high sequence identity between housekeeping genes and similar cellular fatty acid composition. The direct antimicrobial, insecticidal and nematocidal effects ofP. chlororaphisisolates are correlated with known metabolites. Other metabolites prime the plants for stress tolerance and participate in microbial cell signalling events and biofilm formation among other things. Formulations ofP. chlororaphisisolates and their metabolites are currently being commercialized for agricultural use.
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Affiliation(s)
- Anne J. Anderson
- Department of Biological Engineering, Utah State University, Logan UT84322, USA
| | - Young Cheol Kim
- Department of Applied Biology, Chonnam National University, Gwangju 61186, Republic of Korea
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Shah N, Gislason AS, Becker M, Belmonte MF, Fernando WGD, de Kievit TR. Investigation of the quorum-sensing regulon of the biocontrol bacterium Pseudomonas chlororaphis strain PA23. PLoS One 2020; 15:e0226232. [PMID: 32109244 PMCID: PMC7048289 DOI: 10.1371/journal.pone.0226232] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 02/12/2020] [Indexed: 12/15/2022] Open
Abstract
Pseudomonas chlororaphis strain PA23 is a biocontrol agent capable of protecting canola from stem rot disease caused by the fungal pathogen Sclerotinia sclerotiorum. PA23 produces several inhibitory compounds that are under control of a complex regulatory network. Included in this cascade is the PhzRI quorum sensing (QS) system, which plays an essential role in PA23 biocontrol, as well as CsaRI and AurRI, which have not yet been characterized in PA23. The focus of the current study was to employ RNA sequencing to explore the spectrum of PA23 genes under QS control. In this work, we investigated genes under the control of the main QS transcriptional regulator, PhzR, as well as those differentially expressed in an AHL-deficient strain, PA23-6863, which constitutively expresses an AiiA lactonase, rendering the strain QS defective. Transcriptomic profiling revealed 545 differentially expressed genes (365 downregulated; 180 upregulated) in the phzR mutant and 534 genes (382 downregulated; 152 upregulated) in the AHL-deficient PA23-6863. In both strains, decreased expression of phenazine, pyrrolnitrin, and exoprotease biosynthetic genes was observed. We have previously reported that QS activates expression of these genes and their encoded products. In addition, elevated siderophore and decreased chitinase gene expression was observed in the QS-deficient stains, which was confirmed by phenotypic analysis. Inspection of the promoter regions revealed the presence of "phz-box" sequences in only 58 of the 807 differentially expressed genes, suggesting that much of the QS regulon is indirectly regulated. Consistent with this notion, 41 transcriptional regulators displayed altered expression in one or both of the QS-deficient strains. Collectively, our findings indicate that QS governs expression of approximately 13% of the PA23 genome affecting diverse functions ranging from secondary metabolite production to general metabolism.
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Affiliation(s)
- Nidhi Shah
- Department of Microbiology, University of Manitoba, Winnipeg, Manitoba, Canada
| | - April S. Gislason
- Department of Microbiology, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Michael Becker
- Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Mark F. Belmonte
- Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | | | - Teresa R. de Kievit
- Department of Microbiology, University of Manitoba, Winnipeg, Manitoba, Canada
- * E-mail:
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Wu X, Chi X, Wang Y, Zhang K, Kai L, He Q, Tang J, Wang K, Sun L, Hao X, Xie W, Ge Y. vfr, A Global Regulatory Gene, is Required for Pyrrolnitrin but not for Phenazine-1-carboxylic Acid Biosynthesis in Pseudomonas chlororaphis G05. THE PLANT PATHOLOGY JOURNAL 2019; 35:351-361. [PMID: 31481858 PMCID: PMC6706016 DOI: 10.5423/ppj.oa.01.2019.0011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 04/07/2019] [Accepted: 04/09/2019] [Indexed: 06/10/2023]
Abstract
In our previous study, pyrrolnitrin produced in Pseudomonas chlororaphis G05 plays more critical role in suppression of mycelial growth of some fungal pathogens that cause plant diseases in agriculture. Although some regulators for pyrrolnitrin biosynthesis were identified, the pyrrolnitrin regulation pathway was not fully constructed. During our screening novel regulator candidates, we obtained a white conjugant G05W02 while transposon mutagenesis was carried out between a fusion mutant G05ΔphzΔprn::lacZ and E. coli S17-1 (pUT/mini-Tn5Kan). By cloning and sequencing of the transposon-flanking DNA fragment, we found that a vfr gene in the conjugant G05W02 was disrupted with mini-Tn5Kan. In one other previous study on P. fluorescens, however, it was reported that the deletion of the vfr caused increased production of pyrrolnitrin and other antifungal metabolites. To confirm its regulatory function, we constructed the vfr-knockout mutant G05Δvfr and G05ΔphzΔprn::lacZΔvfr. By quantifying β-galactosidase activities, we found that deletion of the vfr decreased the prn operon expression dramatically. Meanwhile, by quantifying pyrrolnitrin production in the mutant G05Δvfr, we found that deficiency of the Vfr caused decreased pyrrolnitrin production. However, production of phenazine-1-carboxylic acid was same to that in the wild-type strain G05. Taken together, Vfr is required for pyrrolnitrin but not for phenazine-1-carboxylic acid biosynthesis in P. chlororaphis G05.
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Affiliation(s)
- Xia Wu
- Department of Applied and Environmental Microbiology, School of Life Sciences, Ludong University, Yantai 264025,
China
| | - Xiaoyan Chi
- Department of Applied and Environmental Microbiology, School of Life Sciences, Ludong University, Yantai 264025,
China
| | - Yanhua Wang
- Department of Applied and Environmental Microbiology, School of Life Sciences, Ludong University, Yantai 264025,
China
| | - Kailu Zhang
- Department of Applied and Environmental Microbiology, School of Life Sciences, Ludong University, Yantai 264025,
China
| | - Le Kai
- Department of Applied and Environmental Microbiology, School of Life Sciences, Ludong University, Yantai 264025,
China
| | - Qiuning He
- Department of Applied and Environmental Microbiology, School of Life Sciences, Ludong University, Yantai 264025,
China
| | - Jinxiu Tang
- Department of Applied and Environmental Microbiology, School of Life Sciences, Ludong University, Yantai 264025,
China
| | - Kewen Wang
- Department of Applied and Environmental Microbiology, School of Life Sciences, Ludong University, Yantai 264025,
China
| | - Longshuo Sun
- Department of Applied and Environmental Microbiology, School of Life Sciences, Ludong University, Yantai 264025,
China
| | - Xiuying Hao
- Institute of Applied Microbiology, Xinjiang Academy of Agricultural Sciences, Urumqi 830001,
China
| | - Weihai Xie
- Department of Applied and Environmental Microbiology, School of Life Sciences, Ludong University, Yantai 264025,
China
| | - Yihe Ge
- Department of Applied and Environmental Microbiology, School of Life Sciences, Ludong University, Yantai 264025,
China
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Song D, Chen G, Liu S, Khaskheli MA, Wu L. Complete genome sequence of Burkholderia sp. JP2-270, a rhizosphere isolate of rice with antifungal activity against Rhizoctonia solani. Microb Pathog 2018; 127:1-6. [PMID: 30458254 DOI: 10.1016/j.micpath.2018.11.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 11/16/2018] [Accepted: 11/16/2018] [Indexed: 01/02/2023]
Abstract
Burkholderia sp. JP2-270, a bacterium with a strong ability to inhibit the growth of Rhizoctonia solani, was isolated from the rhizosphere of rice. The phylogenetic analysis based on 16S rRNA gene revealed that JP2-270 belonged to Burkholderia cepacia complex. Here, we present the complete genome sequence of Burkholderia sp. JP2-270, which consists of three circular chromosomes (Chr1 3,723,585 bp, Chr2 3,274,969 bp, Chr3 1,483,367 bp) and two plasmids (Plas1 15,126 bp, Plas2 428,263 bp). A total of 8193 protein coding genes were predicted in the genome, including 67 tRNA genes, 18 rRNA genes and 4 ncRNA genes. In addition, mutation analysis of Burkholderia sp. JP2-270 revealed that the gene bysR (DM992_17470), encoding a lysR-type transcriptional regulator, was essential for the antagonistic activity of Burkholderia sp. JP2-270 against R. solani GD118 in vitro and in vivo. Identification of regulatory gene associated with antagonistic activity will contribute to understand the antagonistic mechanism of Burkholderia sp. JP2-270.
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Affiliation(s)
- Dawei Song
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China
| | - Guoqing Chen
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China
| | - Sihui Liu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China
| | - Maqsood Ahmed Khaskheli
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China
| | - Lijuan Wu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China.
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Draft Genome Sequence of a Kale ( Brassica oleracea L.) Root Endophyte, Pseudomonas sp. Strain C9. GENOME ANNOUNCEMENTS 2017; 5:5/15/e00163-17. [PMID: 28408678 PMCID: PMC5391416 DOI: 10.1128/genomea.00163-17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Pseudomonas sp. strain C9 is a plant growth–promoting bacterium isolated from the root tissue of Brassica oleracea L. grown in soil from Marlborough, New Zealand. Its draft genome of 6,350,161 bp contains genes associated with plant growth promotion and biological control.
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