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Panahi Z, Owrang M, Goli HR. Significant role of pyocyanin and exotoxin A in the pathogenesis of Pseudomonas aeruginosa isolated from hospitalized patients. Folia Med (Plovdiv) 2024; 66:88-96. [PMID: 38426470 DOI: 10.3897/folmed.66.e111038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 11/27/2023] [Indexed: 03/02/2024] Open
Abstract
AIM Due to the importance of exotoxin A and pyocyanin in the pathogenicity of this bacterium, we decided to evaluate the prevalence of genes encoding these virulence factors in clinical isolates of P.aeruginosa.
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2
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Tse-Kang S, Wani KA, Peterson ND, Page A, Pukkila-Worley R. Activation of intestinal immunity by pathogen effector-triggered aggregation of lysosomal TIR-1/SARM1. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.12.04.569946. [PMID: 38106043 PMCID: PMC10723332 DOI: 10.1101/2023.12.04.569946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
TIR-domain proteins with enzymatic activity are essential for immunity in plants, animals, and bacteria. However, it is not known how these proteins function in pathogen sensing in animals. We discovered that a TIR-domain protein (TIR-1/SARM1) is strategically expressed on the membranes of a lysosomal sub-compartment, which enables intestinal epithelial cells in the nematode C. elegans to survey for pathogen effector-triggered host damage. We showed that a redox active virulence effector secreted by the bacterial pathogen Pseudomonas aeruginosa alkalinized and condensed a specific subset of lysosomes by inducing intracellular oxidative stress. Concentration of TIR-1/SARM1 on the surface of these organelles triggered its multimerization, which engages its intrinsic NADase activity, to activate the p38 innate immune pathway and protect the host against microbial intoxication. Thus, lysosomal TIR-1/SARM1 is a sensor for oxidative stress induced by pathogenic bacteria to activate metazoan intestinal immunity.
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3
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Ambreetha S, Zincke D, Balachandar D, Mathee K. Genomic and metabolic versatility of Pseudomonas aeruginosa contributes to its inter-kingdom transmission and survival. J Med Microbiol 2024; 73. [PMID: 38362900 DOI: 10.1099/jmm.0.001791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024] Open
Abstract
Pseudomonas aeruginosa is one of the most versatile bacteria with renowned pathogenicity and extensive drug resistance. The diverse habitats of this bacterium include fresh, saline and drainage waters, soil, moist surfaces, taps, showerheads, pipelines, medical implants, nematodes, insects, plants, animals, birds and humans. The arsenal of virulence factors produced by P. aeruginosa includes pyocyanin, rhamnolipids, siderophores, lytic enzymes, toxins and polysaccharides. All these virulent elements coupled with intrinsic, adaptive and acquired antibiotic resistance facilitate persistent colonization and lethal infections in different hosts. To date, treating pulmonary diseases remains complicated due to the chronic secondary infections triggered by hospital-acquired P. aeruginosa. On the contrary, this bacterium can improve plant growth by suppressing phytopathogens and insects. Notably, P. aeruginosa is one of the very few bacteria capable of trans-kingdom transmission and infection. Transfer of P. aeruginosa strains from plant materials to hospital wards, animals to humans, and humans to their pets occurs relatively often. Recently, we have identified that plant-associated P. aeruginosa strains could be pathologically similar to clinical isolates. In this review, we have highlighted the genomic and metabolic factors that facilitate the dominance of P. aeruginosa across different biological kingdoms and the varying roles of this bacterium in plant and human health.
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Affiliation(s)
- Sakthivel Ambreetha
- Developmental Biology and Genetics, Division of Biological Sciences, Indian Institute of Science, Bengaluru, Karnataka, 560012, India
| | - Diansy Zincke
- Emerging Pathogens Institute, University of Florida, Gainesville, FL 32610, USA
| | - Dananjeyan Balachandar
- Department of Agricultural Microbiology, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
| | - Kalai Mathee
- Department of Human and Molecular Genetics, Herbert Wertheim College of Medicine, Florida International University, Miami, FL 33199, USA
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4
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Hossain Z, Hubbard M. Genomic characterization of three bacterial isolates antagonistic to the pea root rot pathogen Aphanomyces euteiches. Can J Microbiol 2024; 70:52-62. [PMID: 38061385 DOI: 10.1139/cjm-2023-0117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
Microorganisms living in soil and rhizosphere or inside plants can promote plant growth and health. Genomic characterization of beneficial microbes could shed light on their special features. Through extensive field survey across Saskatchewan, Canada, followed by in vitro and greenhouse characterization, we identified several bacterial isolates antagonistic to pea root rot pathogen Aphanomyces euteiches. In this study, the genomes of three isolates-Pseudomonas sp. rhizo 66 (PD-S66), Pseudomonas synxantha rhizo 25 (Ps-S25), and Serratia sp. root 2 (TS-R2)-were sequenced, assembled, and annotated. Genome size of PD-S66 was 6 279 416 bp with 65 contigs, 59.32% GC content, and 5653 predicted coding sequences (CDS). Genome size of Ps-S25 was 6 058 437 bp with 66 contigs, a GC content of 60.08%, and 5575 predicted CDS. The genome size of TS-R2 was 5 282 152 bp, containing 26 contigs, a GC content of 56.17%, and 4956 predicted CDS. For the identification of the isolates, digital DNA-DNA hybridization (dDDH) and average nucleotide identity (ANI) values were determined, which confirmed PD-S66 and TS-R2 as potential new species, belonging to Pseudomonas and Serratia genera, respectively, while Ps-S25 belongs to species Pseudomonas synxantha. Biosynthetic gene clusters were predicted using antiSMASH. The genomic data provided insight into the genetics and biochemical pathways supporting the antagonistic activity against A. euteiches of these isolates.
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Affiliation(s)
- Zakir Hossain
- Swift Current Research and Development Centre, Agriculture and Agri-Food Canada, 1 Airport Road, Swift Current, SK S9H 3X2, Canada
| | - Michelle Hubbard
- Swift Current Research and Development Centre, Agriculture and Agri-Food Canada, 1 Airport Road, Swift Current, SK S9H 3X2, Canada
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Mendoza AG, Guercio D, Smiley MK, Sharma GK, Withorn JM, Hudson-Smith NV, Ndukwe C, Dietrich LEP, Boon EM. The histidine kinase NahK regulates pyocyanin production through the PQS system. J Bacteriol 2024; 206:e0027623. [PMID: 38169296 PMCID: PMC10809955 DOI: 10.1128/jb.00276-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 12/12/2023] [Indexed: 01/05/2024] Open
Abstract
Many bacterial histidine kinases work in two-component systems that combine into larger multi-kinase networks. NahK is one of the kinases in the GacS Multi-Kinase Network (MKN), which is the MKN that controls biofilm regulation in the opportunistic pathogen Pseudomonas aeruginosa. This network has also been associated with regulating many virulence factors P. aeruginosa secretes to cause disease. However, the individual role of each kinase is unknown. In this study, we identify NahK as a novel regulator of the phenazine pyocyanin (PYO). Deletion of nahK leads to a fourfold increase in PYO production, almost exclusively through upregulation of phenazine operon two (phz2). We determined that this upregulation is due to mis-regulation of all P. aeruginosa quorum-sensing (QS) systems, with a large upregulation of the Pseudomonas quinolone signal system and a decrease in production of the acyl-homoserine lactone-producing system, las. In addition, we see differences in expression of quorum-sensing inhibitor proteins that align with these changes. Together, these data contribute to understanding how the GacS MKN modulates QS and virulence and suggest a mechanism for cell density-independent regulation of quorum sensing. IMPORTANCE Pseudomonas aeruginosa is a Gram-negative bacterium that establishes biofilms as part of its pathogenicity. P. aeruginosa infections are associated with nosocomial infections. As the prevalence of multi-drug-resistant P. aeruginosa increases, it is essential to understand underlying virulence molecular mechanisms. Histidine kinase NahK is one of several kinases in P. aeruginosa implicated in biofilm formation and dispersal. Previous work has shown that the nitric oxide sensor, NosP, triggers biofilm dispersal by inhibiting NahK. The data presented here demonstrate that NahK plays additional important roles in the P. aeruginosa lifestyle, including regulating bacterial communication mechanisms such as quorum sensing. These effects have larger implications in infection as they affect toxin production and virulence.
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Affiliation(s)
- Alicia G. Mendoza
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, New York, USA
| | - Danielle Guercio
- Department of Molecular and Cellular Biology, Stony Brook University, Stony Brook, New York, USA
| | - Marina K. Smiley
- Department of Biological Sciences, Columbia University, New York, New York, USA
| | - Gaurav K. Sharma
- Department of Chemistry, Stony Brook University, Stony Brook, New York, USA
| | - Jason M. Withorn
- Department of Chemistry, Stony Brook University, Stony Brook, New York, USA
| | | | - Chika Ndukwe
- Department of Chemistry, Stony Brook University, Stony Brook, New York, USA
| | - Lars E. P. Dietrich
- Department of Biological Sciences, Columbia University, New York, New York, USA
| | - Elizabeth M. Boon
- Department of Chemistry, Stony Brook University, Stony Brook, New York, USA
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6
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Navarro-Monserrat ED, Taylor CG. T6SS: A Key to Pseudomonas's Success in Biocontrol? Microorganisms 2023; 11:2718. [PMID: 38004732 PMCID: PMC10673566 DOI: 10.3390/microorganisms11112718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 10/29/2023] [Accepted: 10/30/2023] [Indexed: 11/26/2023] Open
Abstract
Bacteria from the genus Pseudomonas have been extensively studied for their capacity to act as biological control agents of disease and pests and for their ability to enhance and promote crop production in agricultural systems. While initial research primarily focused on the human pathogenic bacteria Pseudomonas aeruginosa, recent studies indicate the significance of type VI secretion (T6SS) in other Pseudomonas strains for biocontrol purposes. This system possibly plays a pivotal role in restricting the biological activity of target microorganisms and may also contribute to the bolstering of the survival capabilities of the bacteria within their applied environment. The type VI secretion system is a phage-like structure used to translocate effectors into both prokaryotic and eukaryotic target cells. T6SSs are involved in a myriad of interactions, some of which have direct implications in the success of Pseudomonas as biocontrol agents. The prevalence of T6SSs in the genomes of Pseudomonas species is notably greater than the estimated 25% occurrence rate found in Gram-negative bacteria. This observation implies that T6SS likely plays a pivotal role in the survival and fitness of Pseudomonas. This review provides a brief overview of T6SS, its role in Pseudomonas with biocontrol applications, and future avenues of research within this subject matter.
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Affiliation(s)
| | - Christopher G. Taylor
- Department of Plant Pathology, Ohio Agricultural Research and Development Center, Wooster, OH 44691, USA;
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Zhu X, Ma K, Sun M, Zhang J, Liu L, Niu S. Isolation and identification of pathogens of Morchella sextelata bacterial disease. Front Microbiol 2023; 14:1231353. [PMID: 38029130 PMCID: PMC10657878 DOI: 10.3389/fmicb.2023.1231353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 10/17/2023] [Indexed: 12/01/2023] Open
Abstract
Morel mushroom (Morchella spp.) is a rare edible and medicinal fungus distributed worldwide. It is highly desired by the majority of consumers. Bacterial diseases have been commonly observed during artificial cultivation of Morchella sextelata. Bacterial pathogens spread rapidly and cause a wide range of infections, severely affecting the yield and quality of M. sextelata. In this study, two strains of bacterial pathogens, named M-B and M-5, were isolated, cultured, and purified from the tissues of the infected M. sextelata. Koch's postulates were used to determine the pathogenicity of bacteria affecting M. sextelata, and the pathogens were identified through morphological observation, physiological and biochemical analyses, and 16S rRNA gene sequence analysis. Subsequently, the effect of temperature on the growth of pathogenic bacteria, the inhibitory effect of the bacteria on M. sextelata on plates, and the changes in mycelial morphology of M. sextelata mycelium were analyzed when M. sextelata mycelium was double-cultured with pathogenic bacteria on plates. The results revealed that M-B was Pseudomonas chlororaphis subsp. aureofaciens and M-5 was Bacillus subtilis. Strain M-B started to multiply at 10-15°C, and strain M-5 started at 15-20°C. On the plates, the pathogenic bacteria also produced significant inhibition of M. sextelata mycelium, and the observation of mycelial morphology under the scanning electron microscopy revealed that the inhibited mycelium underwent obvious drying and crumpling, and the healthy mycelium were more plump. Thus, this study clarified the pathogens, optimal growth environment, and characteristics of M. sextelata bacterial diseases, thereby providing valuable basic data for the disease prevention and control of Morchella production.
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Anand A, Falquet L, Abou-Mansour E, L'Haridon F, Keel C, Weisskopf L. Biological hydrogen cyanide emission globally impacts the physiology of both HCN-emitting and HCN-perceiving Pseudomonas. mBio 2023; 14:e0085723. [PMID: 37650608 PMCID: PMC10653877 DOI: 10.1128/mbio.00857-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 07/11/2023] [Indexed: 09/01/2023] Open
Abstract
IMPORTANCE Bacteria communicate by exchanging chemical signals, some of which are volatile and can remotely reach other organisms. HCN was one of the first volatiles discovered to severely impact exposed organisms by inhibiting their respiration. Using HCN-deficient mutants in two Pseudomonas strains, we demonstrate that HCN's impact goes beyond the sole inhibition of respiration and affects both emitting and receiving bacteria in a global way, modulating their motility, biofilm formation, and production of antimicrobial compounds. Our data suggest that bacteria could use HCN not only to control their own cellular functions, but also to remotely influence the behavior of other bacteria sharing the same environment. Since HCN emission occurs in both clinically and environmentally relevant Pseudomonas, these findings are important to better understand or even modulate the expression of bacterial traits involved in both virulence of opportunistic pathogens and in biocontrol efficacy of plant-beneficial strains.
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Affiliation(s)
- Abhishek Anand
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Laurent Falquet
- Department of Biology, University of Fribourg, Fribourg, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | | | | | - Christoph Keel
- Department of Fundamental Microbiology, University of Lausanne, Lausanne, Switzerland
| | - Laure Weisskopf
- Department of Biology, University of Fribourg, Fribourg, Switzerland
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9
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Garrido-Sanz D, Vesga P, Heiman CM, Altenried A, Keel C, Vacheron J. Relation of pest insect-killing and soilborne pathogen-inhibition abilities to species diversification in environmental Pseudomonas protegens. THE ISME JOURNAL 2023; 17:1369-1381. [PMID: 37311938 PMCID: PMC10432460 DOI: 10.1038/s41396-023-01451-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 05/31/2023] [Accepted: 06/02/2023] [Indexed: 06/15/2023]
Abstract
Strains belonging to the Pseudomonas protegens phylogenomic subgroup have long been known for their beneficial association with plant roots, notably antagonising soilborne phytopathogens. Interestingly, they can also infect and kill pest insects, emphasising their interest as biocontrol agents. In the present study, we used all available Pseudomonas genomes to reassess the phylogeny of this subgroup. Clustering analysis revealed the presence of 12 distinct species, many of which were previously unknown. The differences between these species also extend to the phenotypic level. Most of the species were able to antagonise two soilborne phytopathogens, Fusarium graminearum and Pythium ultimum, and to kill the plant pest insect Pieris brassicae in feeding and systemic infection assays. However, four strains failed to do so, likely as a consequence of adaptation to particular niches. The absence of the insecticidal Fit toxin explained the non-pathogenic behaviour of the four strains towards Pieris brassicae. Further analyses of the Fit toxin genomic island evidence that the loss of this toxin is related to non-insecticidal niche specialisation. This work expands the knowledge on the growing Pseudomonas protegens subgroup and suggests that loss of phytopathogen inhibition and pest insect killing abilities in some of these bacteria may be linked to species diversification processes involving adaptation to particular niches. Our work sheds light on the important ecological consequences of gain and loss dynamics for functions involved in pathogenic host interactions of environmental bacteria.
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Affiliation(s)
- Daniel Garrido-Sanz
- Department of Fundamental Microbiology, University of Lausanne, CH-1015, Lausanne, Switzerland.
| | - Pilar Vesga
- Department of Fundamental Microbiology, University of Lausanne, CH-1015, Lausanne, Switzerland.
- Centro de Biotecnología y Genómica de Plantas (CBGP, UPM-INIA), Universidad Politécnica de Madrid (UPM)-Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Madrid, Spain.
| | - Clara M Heiman
- Department of Fundamental Microbiology, University of Lausanne, CH-1015, Lausanne, Switzerland
| | - Aline Altenried
- Department of Fundamental Microbiology, University of Lausanne, CH-1015, Lausanne, Switzerland
| | - Christoph Keel
- Department of Fundamental Microbiology, University of Lausanne, CH-1015, Lausanne, Switzerland.
| | - Jordan Vacheron
- Department of Fundamental Microbiology, University of Lausanne, CH-1015, Lausanne, Switzerland.
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10
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Thalhammer KO, Newman DK. A phenazine-inspired framework for identifying biological functions of microbial redox-active metabolites. Curr Opin Chem Biol 2023; 75:102320. [PMID: 37201291 PMCID: PMC10524139 DOI: 10.1016/j.cbpa.2023.102320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 04/12/2023] [Accepted: 04/17/2023] [Indexed: 05/20/2023]
Abstract
While the list of small molecules known to be secreted by environmental microbes continues to grow, our understanding of their in situ biological functions remains minimal. The time has come to develop a framework to parse the meaning of these "secondary metabolites," which are ecologically ubiquitous and have direct applications in medicine and biotechnology. Here, we focus on a particular subset of molecules, redox active metabolites (RAMs), and review the well-studied phenazines as archetypes of this class. We argue that efforts to characterize the chemical, physical and biological makeup of the microenvironments, wherein these molecules are produced, coupled with measurements of the molecules' basic chemical properties, will enable significant progress in understanding the precise roles of novel RAMs.
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Affiliation(s)
- Korbinian O Thalhammer
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA
| | - Dianne K Newman
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA; Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA.
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11
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Thorwall S, Trivedi V, Ottum E, Wheeldon I. Population genomics-guided engineering of phenazine biosynthesis in Pseudomonas chlororaphis. Metab Eng 2023; 78:223-234. [PMID: 37369325 DOI: 10.1016/j.ymben.2023.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 06/07/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023]
Abstract
The emergence of next-generation sequencing (NGS) technologies has made it possible to not only sequence entire genomes, but also identify metabolic engineering targets across the pangenome of a microbial population. This study leverages NGS data as well as existing molecular biology and bioinformatics tools to identify and validate genomic signatures for improving phenazine biosynthesis in Pseudomonas chlororaphis. We sequenced a diverse collection of 34 Pseudomonas isolates using short- and long-read sequencing techniques and assembled whole genomes using the NGS reads. In addition, we assayed three industrially relevant phenotypes (phenazine production, biofilm formation, and growth temperature) for these isolates in two different media conditions. We then provided the whole genomes and phenazine production data to a unitig-based microbial genome-wide association study (mGWAS) tool to identify novel genomic signatures responsible for phenazine production in P. chlororaphis. Post-processing of the mGWAS analysis results yielded 330 significant hits influencing the biosynthesis of one or more phenazine compounds. Based on a quantitative metric (called the phenotype score), we elucidated the most influential hits for phenazine production and experimentally validated them in vivo in the most optimal phenazine producing strain. Two genes significantly increased phenazine-1-carboxamide (PCN) production: a histidine transporter (ProY_1), and a putative carboxypeptidase (PS__04251). A putative MarR-family transcriptional regulator decreased PCN titer when overexpressed in a high PCN producing isolate. Overall, this work seeks to demonstrate the utility of a population genomics approach as an effective strategy in enabling the identification of targets for metabolic engineering of bioproduction hosts.
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Affiliation(s)
- Sarah Thorwall
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, USA.
| | - Varun Trivedi
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, USA.
| | - Eva Ottum
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, USA
| | - Ian Wheeldon
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, USA; Center for Industrial Biotechnology, University of California, Riverside, CA 92521, USA; Integrative Institute for Genome Biology, University of California, Riverside, CA 92521, USA.
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12
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Zhu Q, Bai X, Li Q, Zhang M, Hu G, Pan K, Liu H, Ke Z, Hong Q, Qiu J. PcaR, a GntR/FadR Family Transcriptional Repressor Controls the Transcription of Phenazine-1-Carboxylic Acid 1,2-Dioxygenase Gene Cluster in Sphingomonas histidinilytica DS-9. Appl Environ Microbiol 2023; 89:e0212122. [PMID: 37191535 PMCID: PMC10304782 DOI: 10.1128/aem.02121-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 04/29/2023] [Indexed: 05/17/2023] Open
Abstract
In our previous study, the phenazine-1-carboxylic acid (PCA) 1,2-dioxygenase gene cluster (pcaA1A2A3A4 cluster) in Sphingomonas histidinilytica DS-9 was identified to be responsible for the conversion of PCA to 1,2-dihydroxyphenazine (Ren Y, Zhang M, Gao S, Zhu Q, et al. 2022. Appl Environ Microbiol 88:e00543-22). However, the regulatory mechanism of the pcaA1A2A3A4 cluster has not been elucidated yet. In this study, the pcaA1A2A3A4 cluster was found to be transcribed as two divergent operons: pcaA3-ORF5205 (named A3-5205 operon) and pcaA1A2-ORF5208-pcaA4-ORF5210 (named A1-5210 operon). The promoter regions of the two operons were overlapped. PcaR acts as a transcriptional repressor of the pcaA1A2A3A4 cluster, and it belongs to GntR/FadR family transcriptional regulator. Gene disruption of pcaR can shorten the lag phase of PCA degradation. The results of electrophoretic mobility shift assay and DNase I footprinting showed that PcaR binds to a 25-bp motif in the ORF5205-pcaA1 intergenic promoter region to regulate the expression of two operons. The 25-bp motif covers the -10 region of the promoter of A3-5205 operon and the -35 region and -10 region of the promoter of A1-5210 operon. The TNGT/ANCNA box within the motif was essential for PcaR binding to the two promoters. PCA acted as an effector of PcaR, preventing it from binding to the promoter region and repressing the transcription of the pcaA1A2A3A4 cluster. In addition, PcaR represses its own transcription, and this repression can be relieved by PCA. This study reveals the regulatory mechanism of PCA degradation in strain DS-9, and the identification of PcaR increases the variety of regulatory model of the GntR/FadR-type regulator. IMPORTANCE Sphingomonas histidinilytica DS-9 is a phenazine-1-carboxylic acid (PCA)-degrading strain. The 1,2-dioxygenase gene cluster (pcaA1A2A3A4 cluster, encoding dioxygenase PcaA1A2, reductase PcaA3, and ferredoxin PcaA4) is responsible for the initial degradation step of PCA and widely distributed in Sphingomonads, but its regulatory mechanism has not been investigated yet. In this study, a GntR/FadR-type transcriptional regulator PcaR repressing the transcription of pcaA1A2A3A4 cluster and pcaR gene was identified and characterized. The binding site of PcaR in ORF5205-pcaA1 intergenic promoter region contains a TNGT/ANCNA box, which is important for the binding. These findings enhance our understanding of the molecular mechanism of PCA degradation.
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Affiliation(s)
- Qian Zhu
- Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, People’s Republic of China
| | - Xuekun Bai
- Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, People’s Republic of China
| | - Qian Li
- Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, People’s Republic of China
| | - Mingliang Zhang
- Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, People’s Republic of China
| | - Gang Hu
- Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, People’s Republic of China
| | - Kaihua Pan
- Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, People’s Republic of China
| | - Hongfei Liu
- Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, People’s Republic of China
| | - Zhijian Ke
- School of Biological and Chemical Engineering, Ningbo Tech University, Ningbo, Zhejiang, People’s Republic of China
| | - Qing Hong
- Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, People’s Republic of China
| | - Jiguo Qiu
- Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, People’s Republic of China
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13
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Zhu Q, Pan K, Liu H, Hu J, Li Q, Bai X, Zhang M, Qiu J, Hong Q. Cloning and expression of the phenazine-1-carboxamide hydrolysis gene pzcH and the identification of the key amino acids necessary for its activity. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131924. [PMID: 37379601 DOI: 10.1016/j.jhazmat.2023.131924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 06/15/2023] [Accepted: 06/22/2023] [Indexed: 06/30/2023]
Abstract
Phenazine-1-carboxamide (PCN), a phenazine derivative, can cause toxicity risks to non target organisms. In this study, the Gram-positive bacteria Rhodococcus equi WH99 was found to have the ability to degrade PCN. PzcH, a novel amidase belonging to amidase signature (AS) family, responsible for hydrolyzing PCN to PCA was identified from strain WH99. PzcH shared no similarity with amidase PcnH which can also hydrolyze PCN and belong to the isochorismatase superfamily from Gram-negative bacteria Sphingomonas histidinilytica DS-9. PzcH also showed low similarity (˂ 39%) with other reported amidases. The optimal catalysis temperature and pH of PzcH was 30 °C and 9.0, respectively. The Km and kcat values of PzcH for PCN were 43.52 ± 4.82 μM and 17.028 ± 0.57 s-1, respectively. The molecular docking and point mutation experiment demonstrated that catalytic triad Lys80-Ser155-Ser179 are essential for PzcH to hydrolyze PCN. Strain WH99 can degrade PCN and PCA to reduce their toxicity against the sensitive organisms. This study enhances our understanding of the molecular mechanism of PCN degradation, presents the first report on the key amino acids in PzcH from the Gram-positive bacteria and provides an effective strain in the bioremediation PCN and PCA contaminated environments.
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Affiliation(s)
- Qian Zhu
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
| | - Kaihua Pan
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
| | - Hongfei Liu
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
| | - Junqiang Hu
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
| | - Qian Li
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
| | - Xuekun Bai
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
| | - Mingliang Zhang
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
| | - Jiguo Qiu
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
| | - Qing Hong
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China.
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14
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Zani ACB, Almeida ÉJRD, Furlan JPR, Pedrino M, Guazzaroni ME, Stehling EG, Andrade ARD, Reginatto V. Electrobiochemical skills of Pseudomonas aeruginosa species that produce pyocyanin or pyoverdine for glycerol oxidation in a microbial fuel cell. CHEMOSPHERE 2023:139073. [PMID: 37263512 DOI: 10.1016/j.chemosphere.2023.139073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 05/05/2023] [Accepted: 05/28/2023] [Indexed: 06/03/2023]
Abstract
Pseudomonas aeruginosa can produce pigments, which mediate external electron transfer (EET). Depending on the mediator, this species can be explored in bioelectrosystems to harvest energy or to obtain chemicals from residual organic compounds. This study has compared the performance of microbial fuel cells (MFCs) inoculated with a Pseudomonas aeruginosa isolate, namely EW603 or EW819, which produce pyocyanin and pyoverdine, respectively. The efficiency of these MFCs in glycerol, a typical residue of biodiesel production, were also compared. The MFCs exhibited different performances. The maximum voltage was 411 and 281 mV m2, the power density was 40.1 and 21.3 mW m-2, and the coulombic efficiency was 5.16 and 1.49% for MFC-EW603 and MFC-EW819, respectively. MFC-EW603 and MFC-EW819 achieved maximum current at 560 and 2200 Ω, at 141.2 and 91.3 mA m-2, respectively. When the system was operated at the respective maximum current output, MFC-EW603 consumed the total glycerol content (11 mmol L-1), and no products could be detected after 50 h. In turn, acetic and butyric acids were detected at the end of MFC-EW819 operation (75 h). The results suggested that P. aeruginosa metabolism can be steered in the MFC to generate current or microbial products depending on the pigment-producing strain and the conditions applied to the system, such as the external resistance. In addition, gene cluster pathways related to phenazine production (phzA and phzB) and other electrogenic-related genes (mexGHI-opmB) were identified in the strain genomes, supporting the findings. These results open new possibilities for using glycerol in bioelectrochemical systems.
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Affiliation(s)
- Ana Clara Bonizol Zani
- Universidade de São Paulo- Faculdade de Filosofia Ciências e Letras de Ribeirão Preto - FFCLRP - SP. Departamento de Química, Av. Bandeirantes, 3900, CEP 14040-030, Ribeirão Preto, SP, Brazil
| | - Érica Janaina Rodrigues de Almeida
- Universidade de São Paulo- Faculdade de Filosofia Ciências e Letras de Ribeirão Preto - FFCLRP - SP. Departamento de Química, Av. Bandeirantes, 3900, CEP 14040-030, Ribeirão Preto, SP, Brazil
| | - João Pedro Rueda Furlan
- Universidade de São Paulo - Faculdade de Ciências Farmacêuticas de Ribeirão Preto - FCFRP - SP. Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Av. Bandeirantes, 3900, CEP 14040-030, Ribeirão Preto, SP, Brazil
| | - Matheus Pedrino
- Universidade de São Paulo - Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Departamento de Biologia, Av. Bandeirantes 3900, Ribeirão Preto, SP, 14049-901, Brazil
| | - María-Eugenia Guazzaroni
- Universidade de São Paulo - Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Departamento de Biologia, Av. Bandeirantes 3900, Ribeirão Preto, SP, 14049-901, Brazil
| | - Eliana Guedes Stehling
- Universidade de São Paulo - Faculdade de Ciências Farmacêuticas de Ribeirão Preto - FCFRP - SP. Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Av. Bandeirantes, 3900, CEP 14040-030, Ribeirão Preto, SP, Brazil
| | - Adalgisa Rodrigues de Andrade
- Universidade de São Paulo- Faculdade de Filosofia Ciências e Letras de Ribeirão Preto - FFCLRP - SP. Departamento de Química, Av. Bandeirantes, 3900, CEP 14040-030, Ribeirão Preto, SP, Brazil; Unesp, National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Institute of Chemistry, P.O. Box 355, 14800-900, Araraquara, SP, Brazil
| | - Valeria Reginatto
- Universidade de São Paulo- Faculdade de Filosofia Ciências e Letras de Ribeirão Preto - FFCLRP - SP. Departamento de Química, Av. Bandeirantes, 3900, CEP 14040-030, Ribeirão Preto, SP, Brazil.
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15
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Akbulatov AF, Akyeva AY, Shangin PG, Emelianov NA, Krylova IV, Markova MO, Labutskaya LD, Mumyatov AV, Tuzharov EI, Bunin DA, Frolova LA, Egorov MP, Syroeshkin MA, Troshin PA. Sn and Ge Complexes with Redox-Active Ligands as Efficient Interfacial Membrane-like Buffer Layers for p-i-n Perovskite Solar Cells. MEMBRANES 2023; 13:439. [PMID: 37103866 PMCID: PMC10145979 DOI: 10.3390/membranes13040439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/02/2023] [Accepted: 04/04/2023] [Indexed: 06/19/2023]
Abstract
Inverted perovskite solar cells with a p-i-n configuration have attracted considerable attention from the research community because of their simple design, insignificant hysteresis, improved operational stability, and low-temperature fabrication technology. However, this type of device is still lagging behind the classical n-i-p perovskite solar cells in terms of its power conversion efficiency. The performance of p-i-n perovskite solar cells can be increased using appropriate charge transport and buffer interlayers inserted between the main electron transport layer and top metal electrode. In this study, we addressed this challenge by designing a series of tin and germanium coordination complexes with redox-active ligands as promising interlayers for perovskite solar cells. The obtained compounds were characterized by X-ray single-crystal diffraction and/or NMR spectroscopy, and their optical and electrochemical properties were thoroughly studied. The efficiency of perovskite solar cells was improved from a reference value of 16.4% to 18.0-18.6%, using optimized interlayers of the tin complexes with salicylimine (1) or 2,3-dihydroxynaphthalene (2) ligands, and the germanium complex with the 2,3-dihydroxyphenazine ligand (4). The IR s-SNOM mapping revealed that the best-performing interlayers form uniform and pinhole-free coatings atop the PC61BM electron-transport layer, which improves the charge extraction to the top metal electrode. The obtained results feature the potential of using tin and germanium complexes as prospective materials for improving the performance of perovskite solar cells.
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Affiliation(s)
- Azat F. Akbulatov
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Academician Semenov Ave. 1, Chernogolovka 142432, Russia
| | - Anna Y. Akyeva
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Pavel G. Shangin
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Nikita A. Emelianov
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Academician Semenov Ave. 1, Chernogolovka 142432, Russia
| | - Irina V. Krylova
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Mariya O. Markova
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
- Faculty of Technology of Inorganic Substances and High Temperature Materials, Dmitry Mendeleev University of Chemical Technology of Russia, Moscow 125047, Russia
| | - Liliya D. Labutskaya
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
- A.P. Nelyubin Institute of Pharmacy, Sechenov First Moscow State Medical University, Moscow 119991, Russia
| | - Alexander V. Mumyatov
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Academician Semenov Ave. 1, Chernogolovka 142432, Russia
| | - Egor I. Tuzharov
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Dmitry A. Bunin
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow 119071, Russia
| | - Lyubov A. Frolova
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Academician Semenov Ave. 1, Chernogolovka 142432, Russia
| | - Mikhail P. Egorov
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Mikhail A. Syroeshkin
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Pavel A. Troshin
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Academician Semenov Ave. 1, Chernogolovka 142432, Russia
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16
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Peterson ND, Tse SY, Huang QJ, Wani KA, Schiffer CA, Pukkila-Worley R. Non-canonical pattern recognition of a pathogen-derived metabolite by a nuclear hormone receptor identifies virulent bacteria in C. elegans. Immunity 2023; 56:768-782.e9. [PMID: 36804958 PMCID: PMC10101930 DOI: 10.1016/j.immuni.2023.01.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/27/2022] [Accepted: 01/25/2023] [Indexed: 02/19/2023]
Abstract
Distinguishing infectious pathogens from harmless microorganisms is essential for animal health. The mechanisms used to identify infectious microbes are not fully understood, particularly in metazoan hosts that eat bacteria as their food source. Here, we characterized a non-canonical pattern-recognition system in Caenorhabditis elegans (C. elegans) that assesses the relative threat of virulent Pseudomonas aeruginosa (P. aeruginosa) to activate innate immunity. We discovered that the innate immune response in C. elegans was triggered by phenazine-1-carboxamide (PCN), a toxic metabolite produced by pathogenic strains of P. aeruginosa. We identified the nuclear hormone receptor NHR-86/HNF4 as the PCN sensor in C. elegans and validated that PCN bound to the ligand-binding domain of NHR-86/HNF4. Activation of NHR-86/HNF4 by PCN directly engaged a transcriptional program in intestinal epithelial cells that protected against P. aeruginosa. Thus, a bacterial metabolite is a pattern of pathogenesis surveilled by nematodes to identify a pathogen in its bacterial diet.
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Affiliation(s)
- Nicholas D Peterson
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Samantha Y Tse
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Qiuyu Judy Huang
- Department of Biochemistry and Molecular Biotechnology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Khursheed A Wani
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Celia A Schiffer
- Department of Biochemistry and Molecular Biotechnology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Read Pukkila-Worley
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA.
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17
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Alatawneh N, Meijler MM. Unraveling the Antibacterial and Iron Chelating Activity of
N
‐Oxide Hydroxy‐Phenazine natural Products and Synthetic Analogs against
Staphylococcus Aureus. Isr J Chem 2023. [DOI: 10.1002/ijch.202200112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Affiliation(s)
- Nadeem Alatawneh
- Department of Chemistry and The National Institute for Biotechnology in the Negev Ben-Gurion University of the Negev Be'er Sheva 84105 Israel
| | - Michael M. Meijler
- Department of Chemistry and The National Institute for Biotechnology in the Negev Ben-Gurion University of the Negev Be'er Sheva 84105 Israel
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18
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McRose D, Li J, Newman D. The chemical ecology of coumarins and phenazines affects iron acquisition by pseudomonads. Proc Natl Acad Sci U S A 2023; 120:e2217951120. [PMID: 36996105 PMCID: PMC10083548 DOI: 10.1073/pnas.2217951120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 02/27/2023] [Indexed: 03/31/2023] Open
Abstract
Secondary metabolites are important facilitators of plant-microbe interactions in the rhizosphere, contributing to communication, competition, and nutrient acquisition. However, at first glance, the rhizosphere seems full of metabolites with overlapping functions, and we have a limited understanding of basic principles governing metabolite use. Increasing access to the essential nutrient iron is one important, but seemingly redundant role performed by both plant and microbial Redox-Active Metabolites (RAMs). We used coumarins, RAMs made by the model plant Arabidopsis thaliana, and phenazines, RAMs made by soil-dwelling pseudomonads, to ask whether plant and microbial RAMs might each have distinct functions under different environmental conditions. We show that variations in oxygen and pH lead to predictable differences in the capacity of coumarins vs phenazines to increase the growth of iron-limited pseudomonads and that these effects depend on whether pseudomonads are grown on glucose, succinate, or pyruvate: carbon sources commonly found in root exudates. Our results are explained by the chemical reactivities of these metabolites and the redox state of phenazines as altered by microbial metabolism. This work shows that variations in the chemical microenvironment can profoundly affect secondary metabolite function and suggests plants may tune the utility of microbial secondary metabolites by altering the carbon released in root exudates. Together, these findings suggest that RAM diversity may be less overwhelming when viewed through a chemical ecological lens: Distinct molecules can be expected to be more or less important to certain ecosystem functions, such as iron acquisition, depending on the local chemical microenvironments in which they reside.
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Affiliation(s)
- Darcy L. McRose
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA91125
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA91125
| | - Jinyang Li
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA91125
| | - Dianne K. Newman
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA91125
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA91125
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19
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Chen J, Feng D, Lu Y, Zhang Y, Jiang H, Yuan M, Xu Y, Zou J, Zhu Y, Zhang J, Ge C, Wang Y. A Novel Phenazine Analog, CPUL1, Suppresses Autophagic Flux and Proliferation in Hepatocellular Carcinoma: Insight from Integrated Transcriptomic and Metabolomic Analysis. Cancers (Basel) 2023; 15:cancers15051607. [PMID: 36900398 PMCID: PMC10001020 DOI: 10.3390/cancers15051607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 03/03/2023] [Indexed: 03/08/2023] Open
Abstract
BACKGROUND CPUL1, a phenazine analog, has demonstrated potent antitumor properties against hepatocellular carcinoma (HCC) and indicates a promising prospect in pharmaceutical development. However, the underlying mechanisms remain largely obscure. METHODS Multiple HCC cell lines were used to investigate the in vitro effects of CPUL1. The antineoplastic properties of CPUL1 were assessed in vivo by establishing a xenograft nude mice model. After that, metabolomics, transcriptomics, and bioinformatics were integrated to elucidate the mechanisms underlying the therapeutic efficacy of CPUL1, highlighting an unanticipated involvement of autophagy dysregulation. RESULTS CPUL1 suppressed HCC cell proliferation in vitro and in vivo, thereby endorsing the potential as a leading agent for HCC therapy. Integrative omics characterized a deteriorating scenario of metabolic debilitation with CPUL1, presenting an issue in the autophagy contribution of autophagy. Subsequent observations indicated that CPUL1 treatment could impede autophagic flow by suppressing autophagosome degradation rather than its formation, which supposedly exacerbated cellular damage triggered by metabolic impairment. Moreover, the observed late autophagosome degradation may be attributed to lysosome dysfunction, which is essential for the final stage of autophagy and cargo disposal. CONCLUSIONS Our study comprehensively profiled the anti-hepatoma characteristics and molecular mechanisms of CPUL1, highlighting the implications of progressive metabolic failure. This could partially be ascribed to autophagy blockage, which supposedly conveyed nutritional deprivation and intensified cellular vulnerability to stress.
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Affiliation(s)
- Jiaqin Chen
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
| | - Dong Feng
- Nanjing Southern Pharmaceutical Technology Co., Ltd., Nanjing 211100, China
| | - Yuanyuan Lu
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
| | - Yanjun Zhang
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
| | - Hanxiang Jiang
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
| | - Man Yuan
- Department of Clinical Pharmacy, School of Basic Medicine & Clinical Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Yifan Xu
- Department of Clinical Pharmacy, School of Basic Medicine & Clinical Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Jianjun Zou
- Department of Pharmacy, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
- Department of Clinical Pharmacology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Yubing Zhu
- Department of Pharmacy, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
- Department of Clinical Pharmacology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Jingjing Zhang
- Department of Pharmacy, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
- Department of Clinical Pharmacology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Chun Ge
- Department of Pharmacy, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
- Department of Clinical Pharmacology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
- Correspondence: (C.G.); (Y.W.)
| | - Ying Wang
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
- Correspondence: (C.G.); (Y.W.)
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20
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Taheri M, Shahcheragh SK, Jawhar ZH, Nazari HE. Synthesis of (E)-2-(Chloro (Phenyl) Methylene)-1-(6-Chloroquinoxalin-2-yl) Hydrazine Derivatives by Reusable Fe 3O 4 Nano Powder at Room Temperature. Polycycl Aromat Compd 2023. [DOI: 10.1080/10406638.2023.2182800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Affiliation(s)
- Milad Taheri
- Department of Medical Laboratory Science, Lebanese French University, Kurdistan Region, Iraq
| | | | - Zanko Hassan Jawhar
- Department of Medical Laboratory Science, College of Health Science, Lebanese French University, Kurdistan Region, Iraq
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21
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Simoska O, Rhodes Z, Carroll E, Petrosky KN, Minteer SD. Biological anolyte regeneration system for redox flow batteries. Chem Commun (Camb) 2023; 59:2142-2145. [PMID: 36727430 DOI: 10.1039/d2cc06011f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Redox flow battery (RFB) electrolyte degradation is a common failure mechanism in RFBs. We report an RFB using genetically engineered, phenazine-producing Escherichia coli to serve as an anolyte regeneration system capable of repairing the degraded/decomposed redox-active phenazines. This work represents a new strategy for improving the stability of RFB systems because, under the influence of genetically engineered microbes, the anolyte species does not display degradation after battery cycling.
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Affiliation(s)
- Olja Simoska
- Department of Chemistry, University of Utah, 315 S 1400 E Rm 2020, Salt Lake City UT 84112, USA.
| | - Zayn Rhodes
- Department of Chemistry, University of Utah, 315 S 1400 E Rm 2020, Salt Lake City UT 84112, USA.
| | - Emily Carroll
- Department of Chemistry, University of Utah, 315 S 1400 E Rm 2020, Salt Lake City UT 84112, USA.
| | - Katia N Petrosky
- Department of Chemistry, University of Utah, 315 S 1400 E Rm 2020, Salt Lake City UT 84112, USA.
| | - Shelley D Minteer
- Department of Chemistry, University of Utah, 315 S 1400 E Rm 2020, Salt Lake City UT 84112, USA.
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22
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Gong Z, Xie R, Zhang Y, Wang M, Tan T. Identification of Emerging Industrial Biotechnology Chassis Vibrio natriegens as a Novel High Salt-Tolerant and Feedstock Flexibility Electroactive Microorganism for Microbial Fuel Cell. Microorganisms 2023; 11:microorganisms11020490. [PMID: 36838454 PMCID: PMC9961702 DOI: 10.3390/microorganisms11020490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 02/12/2023] [Accepted: 02/13/2023] [Indexed: 02/18/2023] Open
Abstract
The development of MFC using electroactive industrial microorganisms has seen a surge of interest because of the co-generation for bioproduct and electricity production. Vibrio natriegens as a promising next-generation industrial microorganism chassis and its application for microbial fuel cells (MFC) was first studied. Mediated electron transfer was found in V. natriegens MFC (VMFC), but V. natriegens cannot secrete sufficient electron mediators to transfer electrons to the anode. All seven electron mediators supplemented are capable of improving the electronic transfer efficiency of VMFC. The media and carbon sources switching study reveals that VMFCs have excellent bioelectricity generation performance with feedstock flexibility and high salt-tolerance. Among them, 1% glycerol as the sole carbon source produced the highest power density of 111.9 ± 6.7 mW/cm2. The insight of the endogenous electronic mediators found that phenazine-1-carboxamide, phenazine-1-carboxylic acid, and 1-hydroxyphenazine are synthesized by V. natriegens via the shikimate pathway and the phenazine synthesis and modification pathways. This work provides the first proof for emerging industrial biotechnology chassis V. natriegens as a novel high salt-tolerant and feedstock flexibility electroactive microorganism for MFC, and giving insight into the endogenous electron mediator biosynthesis of VMFC, paving the way for the application of V. natriegens in MFC and even microbial electrofermentation (EF).
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Affiliation(s)
- Zhijin Gong
- National Energy R&D Center for Biorefinery, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Rong Xie
- National Energy R&D Center for Biorefinery, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yang Zhang
- National Energy R&D Center for Biorefinery, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Meng Wang
- National Energy R&D Center for Biorefinery, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Tianwei Tan
- National Energy R&D Center for Biorefinery, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
- Correspondence:
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23
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Serafim B, Bernardino AR, Freitas F, Torres CAV. Recent Developments in the Biological Activities, Bioproduction, and Applications of Pseudomonas spp. Phenazines. Molecules 2023; 28:molecules28031368. [PMID: 36771036 PMCID: PMC9919295 DOI: 10.3390/molecules28031368] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 01/20/2023] [Accepted: 01/27/2023] [Indexed: 02/04/2023] Open
Abstract
Phenazines are a large group of heterocyclic nitrogen-containing compounds with demonstrated insecticidal, antimicrobial, antiparasitic, and anticancer activities. These natural compounds are synthesized by several microorganisms originating from diverse habitats, including marine and terrestrial sources. The most well-studied producers belong to the Pseudomonas genus, which has been extensively investigated over the years for its ability to synthesize phenazines. This review is focused on the research performed on pseudomonads' phenazines in recent years. Their biosynthetic pathways, mechanism of regulation, production processes, bioactivities, and applications are revised in this manuscript.
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Affiliation(s)
- Bruno Serafim
- Laboratory i4HB—Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
| | - Ana R. Bernardino
- Laboratory i4HB—Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
| | - Filomena Freitas
- Laboratory i4HB—Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
| | - Cristiana A. V. Torres
- Laboratory i4HB—Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
- Correspondence:
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Liu K, Li Z, Liang X, Xu Y, Cao Y, Wang R, Li P, Li L. Biosynthesis and genetic engineering of phenazine-1-carboxylic acid in Pseudomonas chlororaphis Lzh-T5. Front Microbiol 2023; 14:1186052. [PMID: 37168109 PMCID: PMC10165110 DOI: 10.3389/fmicb.2023.1186052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 04/05/2023] [Indexed: 05/13/2023] Open
Abstract
Phenazine-1-carboxylic acid (PCA) is a biologically active substance with the ability to prevent and control crop diseases. It was certified as a pesticide by the Ministry of Agriculture of China in 2011 and was named "Shenzimycin." Lzh-T5 is a Pseudomonas chlororaphis strain found in the rhizosphere of tomatoes. This strain can produce only 230 mg/L of PCA. We used LDA-4, which produces the phenazine synthetic intermediate trans-2,3-dihydro-3-hydroxyanthranilic acid in high amounts, as the starting strain. By restoring phzF and knocking out phzO, we achieved PCA accumulation. Moreover, PCA production was enhanced after knocking out negative regulators, enhancing the shikimate pathway, and performing fed-batch fermentation, thus resulting in the production of 10,653 mg/L of PCA. It suggested that P. chlororaphis Lzh-T5 has the potential to become an efficiency cell factory of biologically active substances.
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Affiliation(s)
- Kaiquan Liu
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Zhenghua Li
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
- Shandong Provincial Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou, China
| | - Xiaoli Liang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Yanpeng Xu
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Yufei Cao
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Ruiming Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Piwu Li
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Ling Li
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
- Shandong Provincial Key Laboratory of Applied Microbiology, Ecology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
- *Correspondence: Ling Li,
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Pyocyanin and 1-Hydroxyphenazine Promote Anaerobic Killing of Pseudomonas aeruginosa via Single-Electron Transfer with Ferrous Iron. Microbiol Spectr 2022; 10:e0231222. [PMID: 36321913 PMCID: PMC9769500 DOI: 10.1128/spectrum.02312-22] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Previously, it was reported that natural phenazines are able to support the anaerobic survival of Pseudomonas aeruginosa PA14 cells via electron shuttling, with electrodes poised as the terminal oxidants (Y. Wang, S. E. Kern, and D. K. Newman, J Bacteriol 192:365-369, 2010, https://doi.org/10.1128/JB.01188-09). The present study shows that both pyocyanin (PYO) and 1-hydroxyphenazine (1-OHPHZ) promoted the anaerobic killing of PA14 Δphz cells presumably via a single-electron transfer reaction with ferrous iron. However, phenazine-1-carboxylic acid (PCA) did not affect anaerobic survival in the presence of ferrous iron. Anaerobic cell death was alleviated by the addition of antioxidant compounds, which inhibit electron transfer via DNA damage. Neither superoxide dismutase (SOD) nor catalase was able to alleviate P. aeruginosa cell death, ruling out the possibility of reactive oxygen species (ROS)-induced killing. Further, the phenazine degradation profile and the redox state-associated color changes suggested that phenazine radical intermediates are likely generated by single-electron transfer. In this study, we showed that the phenazines 1-OHPHZ and PYO anaerobically killed the cell via single-electron transfer with ferrous iron and that the killing might have resulted from phenazine radicals. IMPORTANCE Pseudomonas aeruginosa is an opportunistic human pathogen which infects patients with burns, immunocompromised individuals, and in particular, the mucus that accumulates on the surface of the lung in cystic fibrosis (CF) patients. Phenazines as redox-active small molecules have been reported as important compounds for the control of cellular functions and virulence as well as anaerobic survival via electron shuttles. We show that both pyocyanin (PYO) and 1-hydroxyphenazine (1-OHPHZ) generate phenazine radical intermediates via presumably single-electron transfer reaction with ferrous iron, leading to the anaerobic killing of Pseudomonas cells. The recA mutant defect in the DNA repair system was more sensitive to anaerobic conditions. Our results collectively suggest that both phenazines anaerobically kill cells via DNA damage during electron transfer with iron.
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Deng RX, Yue SJ, Wang W, Hu HB, Zhang XH. Identification, biological evaluation, and improved biotransformation of a phenazine antioxidant using Streptomyces lomondensis S015 whole cells. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.12.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Mahamad Maifiah MH, Zhu Y, Tsuji BT, Creek DJ, Velkov T, Li J. Integrated metabolomic and transcriptomic analyses of the synergistic effect of polymyxin-rifampicin combination against Pseudomonas aeruginosa. J Biomed Sci 2022; 29:89. [PMID: 36310165 PMCID: PMC9618192 DOI: 10.1186/s12929-022-00874-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 10/21/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Understanding the mechanism of antimicrobial action is critical for improving antibiotic therapy. For the first time, we integrated correlative metabolomics and transcriptomics of Pseudomonas aeruginosa to elucidate the mechanism of synergistic killing of polymyxin-rifampicin combination. METHODS Liquid chromatography-mass spectrometry and RNA-seq analyses were conducted to identify the significant changes in the metabolome and transcriptome of P. aeruginosa PAO1 after exposure to polymyxin B (1 mg/L) and rifampicin (2 mg/L) alone, or in combination over 24 h. A genome-scale metabolic network was employed for integrative analysis. RESULTS In the first 4-h treatment, polymyxin B monotherapy induced significant lipid perturbations, predominantly to fatty acids and glycerophospholipids, indicating a substantial disorganization of the bacterial outer membrane. Expression of ParRS, a two-component regulatory system involved in polymyxin resistance, was increased by polymyxin B alone. Rifampicin alone caused marginal metabolic perturbations but significantly affected gene expression at 24 h. The combination decreased the gene expression of quorum sensing regulated virulence factors at 1 h (e.g. key genes involved in phenazine biosynthesis, secretion system and biofilm formation); and increased the expression of peptidoglycan biosynthesis genes at 4 h. Notably, the combination caused substantial accumulation of nucleotides and amino acids that last at least 4 h, indicating that bacterial cells were in a state of metabolic arrest. CONCLUSION This study underscores the substantial potential of integrative systems pharmacology to determine mechanisms of synergistic bacterial killing by antibiotic combinations, which will help optimize their use in patients.
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Affiliation(s)
- Mohd Hafidz Mahamad Maifiah
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia
- International Institute for Halal Research and Training, International Islamic University Malaysia, 50728, Kuala Lumpur, Malaysia
| | - Yan Zhu
- Infection Program and Department of Microbiology, Monash Biomedicine Discovery Institute, Monash University, Melbourne, VIC, 3800, Australia
| | - Brian T Tsuji
- Department of Pharmacy Practice, School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, Buffalo, NY, USA
| | - Darren J Creek
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia
| | - Tony Velkov
- Department of Biochemistry and Pharmacology, University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Jian Li
- Infection Program and Department of Microbiology, Monash Biomedicine Discovery Institute, Monash University, Melbourne, VIC, 3800, Australia.
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Li S, Yue S, Huang P, Feng T, Zhang H, Yao R, Wang W, Zhang X, Hu H. Comparative metabolomics and transcriptomics analyses provide insights into the high yield mechanism of phenazines biosynthesis in
Pseudomonas chlororaphis
GP72. J Appl Microbiol 2022; 133:2790-2801. [DOI: 10.1111/jam.15727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 07/18/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Song Li
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology Shanghai Jiao Tong University Shanghai China
| | - Sheng‐Jie Yue
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology Shanghai Jiao Tong University Shanghai China
| | - Peng Huang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology Shanghai Jiao Tong University Shanghai China
| | - Tong‐Tong Feng
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology Shanghai Jiao Tong University Shanghai China
| | - Hong‐Yan Zhang
- Shanghai Nong Le Biological Products Company Limited (NLBP), Shanghai China
| | - Rui‐Lian Yao
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology Shanghai Jiao Tong University Shanghai China
| | - Wei Wang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology Shanghai Jiao Tong University Shanghai China
- Shanghai Nongle Joint R&D Center on Biopesticides and Biofertilizers Shanghai Jiao Tong University Shanghai China
| | - Xue‐Hong Zhang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology Shanghai Jiao Tong University Shanghai China
- Shanghai Nongle Joint R&D Center on Biopesticides and Biofertilizers Shanghai Jiao Tong University Shanghai China
| | - Hong‐Bo Hu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology Shanghai Jiao Tong University Shanghai China
- Shanghai Nongle Joint R&D Center on Biopesticides and Biofertilizers Shanghai Jiao Tong University Shanghai China
- National Experimental Teaching Center for Life Sciences and Biotechnology Shanghai Jiao Tong University Shanghai China
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Mathur V, Ulanova D. Microbial Metabolites Beneficial to Plant Hosts Across Ecosystems. MICROBIAL ECOLOGY 2022:10.1007/s00248-022-02073-x. [PMID: 35867138 DOI: 10.1007/s00248-022-02073-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 07/05/2022] [Indexed: 06/15/2023]
Abstract
Plants are intimately connected with their associated microorganisms. Chemical interactions via natural products between plants and their microbial symbionts form an important aspect in host health and development, both in aquatic and terrestrial ecosystems. These interactions range from negative to beneficial for microbial symbionts as well as their hosts. Symbiotic microbes synchronize their metabolism with their hosts, thus suggesting a possible coevolution among them. Metabolites, synthesized from plants and microbes due to their association and coaction, supplement the already present metabolites, thus promoting plant growth, maintaining physiological status, and countering various biotic and abiotic stress factors. However, environmental changes, such as pollution and temperature variations, as well as anthropogenic-induced monoculture settings, have a significant influence on plant-associated microbial community and its interaction with the host. In this review, we put the prominent microbial metabolites participating in plant-microbe interactions in the natural terrestrial and aquatic ecosystems in a single perspective and have discussed commonalities and differences in these interactions for adaptation to surrounding environment and how environmental changes can alter the same. We also present the status and further possibilities of employing chemical interactions for environment remediation. Our review thus underlines the importance of ecosystem-driven functional adaptations of plant-microbe interactions in natural and anthropogenically influenced ecosystems and their possible applications.
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Affiliation(s)
- Vartika Mathur
- Animal Plant Interactions Lab, Department of Zoology, Sri Venkateswara College, Benito Juarez Marg, Dhaula Kuan, New Delhi-110021, India.
| | - Dana Ulanova
- Department of Marine Resource Sciences, Faculty of Agriculture and Marine Science, Kochi University, Monobe, Nankoku city, Kochi, 783-8502, Japan.
- Center for Advanced Marine Core Research, Kochi University, Monobe, Nankoku city, Kochi, 783-8502, Japan.
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Chi X, Wang Y, Miao J, Wang W, Sun Y, Yu Z, Feng Z, Cheng S, Chen L, Ge Y. EppR, a new LysR-family transcription regulator, positively influences phenazine biosynthesis in the plant growth-promoting rhizobacterium Pseudomonas chlororaphis G05. Microbiol Res 2022; 260:127050. [DOI: 10.1016/j.micres.2022.127050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 04/13/2022] [Accepted: 04/19/2022] [Indexed: 10/18/2022]
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Kuhl-Nagel T, Rodriguez PA, Gantner I, Chowdhury SP, Schwehn P, Rosenkranz M, Weber B, Schnitzler JP, Kublik S, Schloter M, Rothballer M, Falter-Braun P. Novel Pseudomonas sp. SCA7 Promotes Plant Growth in Two Plant Families and Induces Systemic Resistance in Arabidopsis thaliana. Front Microbiol 2022; 13:923515. [PMID: 35875540 PMCID: PMC9297469 DOI: 10.3389/fmicb.2022.923515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 05/18/2022] [Indexed: 11/13/2022] Open
Abstract
Pseudomonas sp. SCA7, characterized in this study, was isolated from roots of the bread wheat Triticum aestivum. Sequencing and annotation of the complete SCA7 genome revealed that it represents a potential new Pseudomonas sp. with a remarkable repertoire of plant beneficial functions. In vitro and in planta experiments with the reference dicot plant A. thaliana and the original monocot host T. aestivum were conducted to identify the functional properties of SCA7. The isolate was able to colonize roots, modify root architecture, and promote growth in A. thaliana. Moreover, the isolate increased plant fresh weight in T. aestivum under unchallenged conditions. Gene expression analysis of SCA7-inoculated A. thaliana indicated a role of SCA7 in nutrient uptake and priming of plants. Moreover, confrontational assays of SCA7 with fungal and bacterial plant pathogens revealed growth restriction of the pathogens by SCA7 in direct as well as indirect contact. The latter indicated involvement of microbial volatile organic compounds (mVOCs) in this interaction. Gas chromatography-mass spectrometry (GC-MS) analyses revealed 1-undecene as the major mVOC, and octanal and 1,4-undecadiene as minor abundant compounds in the emission pattern of SCA7. Additionally, SCA7 enhanced resistance of A. thaliana against infection with the plant pathogen Pseudomonas syringae pv. tomato DC3000. In line with these results, SA- and JA/ET-related gene expression in A. thaliana during infection with Pst DC3000 was upregulated upon treatment with SCA7, indicating the ability of SCA7 to induce systemic resistance. The thorough characterization of the novel Pseudomonas sp. SCA7 showed a remarkable genomic and functional potential of plant beneficial traits, rendering it a promising candidate for application as a biocontrol or a biostimulation agent.
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Affiliation(s)
- Theresa Kuhl-Nagel
- Institute for Network Biology, Helmholtz Center Munich, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
| | - Patricia Antonia Rodriguez
- Institute for Network Biology, Helmholtz Center Munich, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
| | - Isabella Gantner
- Institute for Network Biology, Helmholtz Center Munich, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
- Microbe-Host Interactions, Faculty of Biology, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Soumitra Paul Chowdhury
- Institute for Network Biology, Helmholtz Center Munich, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
| | - Patrick Schwehn
- Institute for Network Biology, Helmholtz Center Munich, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
| | - Maaria Rosenkranz
- Institute of Biochemical Plant Pathology, Research Unit Environmental Simulation, Helmholtz Center Munich, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
| | - Baris Weber
- Institute of Biochemical Plant Pathology, Research Unit Environmental Simulation, Helmholtz Center Munich, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
| | - Jörg-Peter Schnitzler
- Institute of Biochemical Plant Pathology, Research Unit Environmental Simulation, Helmholtz Center Munich, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
| | - Susanne Kublik
- Research Unit for Comparative Microbiome Analysis (COMI), Helmholtz Center Munich, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
| | - Michael Schloter
- Research Unit for Comparative Microbiome Analysis (COMI), Helmholtz Center Munich, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
| | - Michael Rothballer
- Institute for Network Biology, Helmholtz Center Munich, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
| | - Pascal Falter-Braun
- Institute for Network Biology, Helmholtz Center Munich, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
- Microbe-Host Interactions, Faculty of Biology, Ludwig-Maximilians-University of Munich, Munich, Germany
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Rozner M, Nukarinen E, Wolfinger MT, Amman F, Weckwerth W, Bläsi U, Sonnleitner E. Rewiring of Gene Expression in Pseudomonas aeruginosa During Diauxic Growth Reveals an Indirect Regulation of the MexGHI-OpmD Efflux Pump by Hfq. Front Microbiol 2022; 13:919539. [PMID: 35832820 PMCID: PMC9272787 DOI: 10.3389/fmicb.2022.919539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 05/25/2022] [Indexed: 11/13/2022] Open
Abstract
In Pseudomonas aeruginosa, the RNA chaperone Hfq and the catabolite repression protein Crc act in concert to regulate numerous genes during carbon catabolite repression (CCR). After alleviation of CCR, the RNA CrcZ sequesters Hfq/Crc, which leads to a rewiring of gene expression to ensure the consumption of less preferred carbon and nitrogen sources. Here, we performed a multiomics approach by assessing the transcriptome, translatome, and proteome in parallel in P. aeruginosa strain O1 during and after relief of CCR. As Hfq function is impeded by the RNA CrcZ upon relief of CCR, and Hfq is known to impact antibiotic susceptibility in P. aeruginosa, emphasis was laid on links between CCR and antibiotic susceptibility. To this end, we show that the mexGHI-opmD operon encoding an efflux pump for the antibiotic norfloxacin and the virulence factor 5-Methyl-phenazine is upregulated after alleviation of CCR, resulting in a decreased susceptibility to the antibiotic norfloxacin. A model for indirect regulation of the mexGHI-opmD operon by Hfq is presented.
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Affiliation(s)
- Marlena Rozner
- Department of Microbiology, Immunobiology and Genetics, Max Perutz Labs, Vienna Biocenter (VBC), University of Vienna, Vienna, Austria
| | - Ella Nukarinen
- Molecular Systems Biology, Department of Functional and Evolutionary Ecology, Faculty of Life Sciences, University of Vienna, Vienna, Austria
| | - Michael T. Wolfinger
- Research Group Bioinformatics and Computational Biology, Faculty of Computer Science, University of Vienna, Vienna, Austria
- Department of Theoretical Chemistry, University of Vienna, Vienna, Austria
| | - Fabian Amman
- Research Group Bioinformatics and Computational Biology, Faculty of Computer Science, University of Vienna, Vienna, Austria
| | - Wolfram Weckwerth
- Molecular Systems Biology, Department of Functional and Evolutionary Ecology, Faculty of Life Sciences, University of Vienna, Vienna, Austria
- Vienna Metabolomics Center, University of Vienna, Vienna, Austria
| | - Udo Bläsi
- Department of Microbiology, Immunobiology and Genetics, Max Perutz Labs, Vienna Biocenter (VBC), University of Vienna, Vienna, Austria
- *Correspondence: Udo Bläsi,
| | - Elisabeth Sonnleitner
- Department of Microbiology, Immunobiology and Genetics, Max Perutz Labs, Vienna Biocenter (VBC), University of Vienna, Vienna, Austria
- Elisabeth Sonnleitner,
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The Novel Amidase PcnH Initiates the Degradation of Phenazine-1-Carboxamide in Sphingomonas histidinilytica DS-9. Appl Environ Microbiol 2022; 88:e0054322. [PMID: 35579476 PMCID: PMC9195955 DOI: 10.1128/aem.00543-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Phenazines are an important class of secondary metabolites and are primarily named for their heterocyclic phenazine cores, including phenazine-1-carboxylic acid (PCA) and its derivatives, such as phenazine-1-carboxamide (PCN) and pyocyanin (PYO). Although several genes involved in the degradation of PCA and PYO have been reported so far, the genetic foundations of PCN degradation remain unknown. In this study, a PCN-degrading bacterial strain, Sphingomonas histidinilytica DS-9, was isolated. The gene pcnH, encoding a novel amidase responsible for the initial step of PCN degradation, was cloned by genome comparison and subsequent experimental validation. PcnH catalyzed the hydrolysis of the amide bond of PCN to produce PCA, which shared low identity (only 26 to 33%) with reported amidases. The Km and kcat values of PcnH for PCN were 33.22 ± 5.70 μM and 18.71 ± 0.52 s-1, respectively. PcnH has an Asp-Lys-Cys motif, which is conserved among amidases of the isochorismate hydrolase-like (IHL) superfamily. The replacement of Asp37, Lys128, and Cys163 with alanine in PcnH led to the complete loss of enzymatic activity. Furthermore, the genes pcaA1A2A3A4 and pcnD were found to encode PCA 1,2-dioxygenase and 1,2-dihydroxyphenazine (2OHPC) dioxygenase, which were responsible for the subsequent degradation steps of PCN. The PCN-degradative genes were highly conserved in some bacteria of the genus Sphingomonas, with slight variations in the sequence identities. IMPORTANCE Phenazines have been widely acknowledged as a natural antibiotic for more than 150 years, but their degradation mechanisms are still not completely elucidated. Compared with the studies on the degradation mechanism of PCA and PYO, little is known regarding PCN degradation by far. Previous studies have speculated that its initial degradation step may be catalyzed by an amidase, but no further studies have been conducted. This study identified a novel amidase, PcnH, that catalyzed the hydrolysis of PCN to PCA. In addition, the PCA 1,2-dioxygenase PcaA1A2A3A4 and 2OHPC dioxygenase PcnD were also found to be involved in the subsequent degradation steps of PCN in S. histidinilytica DS-9. And the genes responsible for PCN catabolism are highly conserved in some strains of Sphingomonas. These results deepen our understanding of the PCN degradation mechanism.
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Orlandi VT, Martegani E, Giaroni C, Baj A, Bolognese F. Bacterial pigments: A colorful palette reservoir for biotechnological applications. Biotechnol Appl Biochem 2022; 69:981-1001. [PMID: 33870552 PMCID: PMC9544673 DOI: 10.1002/bab.2170] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 04/09/2021] [Indexed: 12/12/2022]
Abstract
Synthetic derivatives are currently used instead of pigments in many applicative fields, from food to feed, from pharmaceutical to diagnostic, from agronomy to industry. Progress in organic chemistry allowed to obtain rather cheap compounds covering the whole color spectrum. However, several concerns arise from this chemical approach, as it is mainly based on nonrenewable resources such as fossil oil, and the toxicity or carcinogenic properties of products and/or precursors may be harmful for personnel involved in the productive processes. In this scenario, microorganisms and their pigments represent a colorful world to discover and reconsider. Each living bacterial strain may be a source of secondary metabolites with peculiar functions. The aim of this review is to link the physiological role of bacterial pigments with their potential use in different biotechnological fields. This enormous potential supports the big challenge for the development of strategies useful to identify, produce, and purify the right pigment for the desired application. At the end of this ideal journey through the world of bacterial pigments, the attention will be focused on melanin compounds, whose production relies upon different techniques ranging from natural producers, heterologous hosts, or isolated enzymes. In a green workflow, the microorganisms represent the starting and final point of pigment production.
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Affiliation(s)
| | - Eleonora Martegani
- Department of Biotechnologies and Life SciencesUniversity of InsubriaVareseItaly
| | - Cristina Giaroni
- Department of Medicine and SurgeryUniversity of InsubriaVareseItaly
| | - Andreina Baj
- Department of Medicine and SurgeryUniversity of InsubriaVareseItaly
| | - Fabrizio Bolognese
- Department of Biotechnologies and Life SciencesUniversity of InsubriaVareseItaly
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Ulrich K, Becker R, Behrendt U, Kube M, Schneck V, Ulrich A. Physiological and genomic characterisation of Luteimonas fraxinea sp. nov., a bacterial species associated with trees tolerant to ash dieback. Syst Appl Microbiol 2022; 45:126333. [DOI: 10.1016/j.syapm.2022.126333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 05/04/2022] [Accepted: 05/06/2022] [Indexed: 12/01/2022]
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Liaudanskaya AI, Vychik PV, Maximova NP, Verameyenka KG. Genome analysis of Pseudomonas chlororaphis subsp. aurantiaca mutant strains with increased production of phenazines. Arch Microbiol 2022; 204:247. [PMID: 35397008 DOI: 10.1007/s00203-021-02648-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 09/24/2021] [Accepted: 10/05/2021] [Indexed: 11/30/2022]
Abstract
Genomes of three strains-phenazine producers-Pseudomonas chlororaphis subsp. aurantiaca (B-162 (wild type), mutant strain B-162/255, and its derivative B-162/17) were sequenced and compared. Comparison of a wild-type strain and B-162/255 mutant genomes revealed 32 mutations. 19 new mutations were detected in the genome of B-162/17. Further bioinformatics analysis allowed us to predict mutant protein functions and secondary structures of five gene products, mutations which might potentially influence phenazine synthesis and secretion in Pseudomonas bacteria. These genes encode phenylalanine hydroxylase transcriptional activator PhhR, type I secretion system permease/ATPase, transcriptional regulator MvaT, GacA response regulator, and histidine kinase. Amino acid substitutions were found in domains of studied proteins. One deletion in an intergenic region could affect a potential transcription factor binding site that participates in the regulation of gene that encodes ABC transporter.
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Affiliation(s)
| | - Pavel V Vychik
- Belarusian State University, Nezavisimisty Ave. 4, 220030, Minsk, Belarus
| | - Natalia P Maximova
- Belarusian State University, Nezavisimisty Ave. 4, 220030, Minsk, Belarus
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Potentiality of Formulated Bioagents from Lab to Field: A Sustainable Alternative for Minimizing the Use of Chemical Fungicide in Controlling Potato Late Blight. SUSTAINABILITY 2022. [DOI: 10.3390/su14084383] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
Late blight of potato caused by an oomycete, Phytophthora infestans (Mont.) De Bary limits the production of potato worldwide. Late blight management has been based on chemical fungicide application, and the repeated use of these fungicides introduces new and more aggressive genotypes, which can rapidly overcome host resistance. Therefore, innovative and effective control measures are needed if fungicide use is to be reduced or eliminated. Some potential formulated bacterial bioagents viz. Pseudomonas putida (BDISO64RanP) and Bacillus subtilis (BDISO36ThaR), and fungal bioagents viz. Trichoderma paraviridicens (BDISOF67R) and T. erinaceum (BDISOF91R), were evaluated for their performance in controlling late blight of potato under growth chamber and field conditions. Both artificial inoculation and field experiments revealed that eight sprays of these bacterial (P. putida and B. subtilis) and fungal (T. erinaceum) bioagents were found to be most effective at reducing late blight severity by 99% up until 60 days after planting (DAP), whereas these bioagents were found to be partially effective until 70 DAP, reducing late blight severity by 46 to 60% and 58 to 60% in the field and growth chamber conditions, respectively. However, these bioagents can reduce the spray frequencies of Curzate M8 by 50% (four sprays instead of eight) when applied together with this fungicide. Economic analysis revealed that T6 (eight sprays of formulated P. putida + B. subtilis + four sprays of Curzate M8) and T16 (eight sprays of formulated P. putida, B. subtilis, and T. erinaceum + four sprays of Curzate M8) performed better in consecutive two years, applying less fungicidal spray compared to T1 (eight sprays of Curzate M8 (Positive control)), which indicated that the return ranged, by Bangladeshi Currency (Taka), from 0.85 to 0.90 over the investment of Bangladeshi Currency (Taka) 1.00 in these treatments, and these results together highlight the possibility of using bioagents in reducing late blight of potato under a proper warning system to reduce the application frequency of chemical fungicide.
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Morohoshi T, Yabe N, Yaguchi N, Xie X, Someya N. Regulation of phenazine-1-carboxamide production by quorum sensing in type strains of Pseudomonas chlororaphis subsp. chlororaphis and Pseudomonas chlororaphis subsp. piscium. J Biosci Bioeng 2022; 133:541-546. [PMID: 35365429 DOI: 10.1016/j.jbiosc.2022.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/05/2022] [Accepted: 03/07/2022] [Indexed: 11/25/2022]
Abstract
Quorum sensing is a population density-dependent gene regulation mechanism. N-Acyl-l-homoserine lactone (AHL) has been identified as a signal compound in quorum sensing in gram-negative bacteria. Phenazine derivatives are bacterial secondary metabolites known for their broad-spectrum antifungal activity. Pseudomonas chlororaphis has been demonstrated to be a biocontrol strain, and most of its species can produce phenazine derivatives under AHL-mediated quorum sensing. Although P. chlororaphis is divided into four subspecies, the relationship between phenazine production and quorum sensing has not been investigated in two of the subspecies, P. chlororaphis subsp. chlororaphis and piscium. Two luxI/luxR homolog gene sets, phzI and phzR and csaI and csaR, were found in the complete genome sequences of the type strains of P. chlororaphis subsp. chlororaphis JCM 2778T and P. chlororaphis subsp. piscium DSM 21509T. Two major AHLs, N-(3-hydroxyhexanoyl)-l-homoserine lactone and N-(3-hydroxyoctanoyl)-l-homoserine lactone, were detected in JCM 2778 and DSM 21509 samples. PhzI synthesized all AHLs; however, CsaI could not perform AHL biosynthesis in JCM 2778 and DSM 21509. In both strains, disruption of the phzI caused complete disappearance of phenazine-1-carboxylic acid (PCA) and phenazine-1-carboxamide (PCN) production; however, disruption of csaI did not induce significant changes in PCA and PCN production. Phenazine derivatives produced by JCM 2778 and DSM 21509 under quorum sensing are crucial for the control of the plant pathogenic fungi, Rhizoctonia solani, Fusarium graminearum, and Fusarium nirenbergiae. These results demonstrated that PhzI/PhzR quorum-sensing system play an important role in production of phenazine derivatives and biocontrol activity.
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Affiliation(s)
- Tomohiro Morohoshi
- Graduate School of Regional Development and Creativity, Utsunomiya University, 7-1-2 Yoto, Utsunomiya, Tochigi 321-8585, Japan.
| | - Naoka Yabe
- Graduate School of Regional Development and Creativity, Utsunomiya University, 7-1-2 Yoto, Utsunomiya, Tochigi 321-8585, Japan
| | - Naoya Yaguchi
- Graduate School of Regional Development and Creativity, Utsunomiya University, 7-1-2 Yoto, Utsunomiya, Tochigi 321-8585, Japan
| | - Xiaonan Xie
- Center for Bioscience Research and Education, Utsunomiya University, 350 Mine-machi, Utsunomiya, Tochigi 321-8505, Japan
| | - Nobutaka Someya
- Institute for Plant Protection, National Agriculture and Food Research Organization, 2-1-18 Kannondai, Tsukuba, Ibaraki 305-8666, Japan
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Interplay between Arabidopsis thaliana Genotype, Plant Growth and Rhizosphere Colonization by Phytobeneficial Phenazine-Producing Pseudomonas chlororaphis. Microorganisms 2022; 10:microorganisms10030660. [PMID: 35336236 PMCID: PMC8950391 DOI: 10.3390/microorganisms10030660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/15/2022] [Accepted: 03/17/2022] [Indexed: 12/19/2022] Open
Abstract
Rhizosphere colonization by phytobeneficial Pseudomonas spp. is pivotal in triggering their positive effects on plant health. Many Pseudomonas spp. Determinants, involved in rhizosphere colonization, have already been deciphered. However, few studies have explored the role played by specific plant genes in rhizosphere colonization by these bacteria. Using isogenic Arabidopsis thaliana mutants, we studied the effect of 20 distinct plant genes on rhizosphere colonization by two phenazine-producing P. chlororaphis strains of biocontrol interest, differing in their colonization abilities: DTR133, a strong rhizosphere colonizer and ToZa7, which displays lower rhizocompetence. The investigated plant mutations were related to root exudation, immunity, and root system architecture. Mutations in smb and shv3, both involved in root architecture, were shown to positively affect rhizosphere colonization by ToZa7, but not DTR133. While these strains were not promoting plant growth in wild-type plants, increased plant biomass was measured in inoculated plants lacking fez, wrky70, cbp60g, pft1 and rlp30, genes mostly involved in plant immunity. These results point to an interplay between plant genotype, plant growth and rhizosphere colonization by phytobeneficial Pseudomonas spp. Some of the studied genes could become targets for plant breeding programs to improve plant-beneficial Pseudomonas rhizocompetence and biocontrol efficiency in the field.
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Zhou H, Yang Y, Shang W, Rao Y, Chen J, Peng H, Huang J, Hu Z, Zhang R, Rao X. Pyocyanin biosynthesis protects Pseudomonas aeruginosa from nonthermal plasma inactivation. Microb Biotechnol 2022; 15:1910-1921. [PMID: 35290715 PMCID: PMC9151332 DOI: 10.1111/1751-7915.14032] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 03/05/2022] [Indexed: 11/27/2022] Open
Abstract
Pseudomonas aeruginosa is an important opportunistic human pathogen, which raises a worldwide concern for its increasing resistance. Nonthermal plasma, which is also called cold atmospheric plasma (CAP), is an alternative therapeutic approach for clinical infectious diseases. However, the bacterial factors that affect CAP treatment remain unclear. The sterilization effect of a portable CAP device on different P. aeruginosa strains was investigated in this study. Results revealed that CAP can directly or indirectly kill P. aeruginosa in a time‐dependent manner. Scanning electron microscopy and transmission electron microscope showed negligible surface changes between CAP‐treated and untreated P. aeruginosa cells. However, cell leakage occurred during the CAP process with increased bacterial lactate dehydrogenase release. More importantly, pigmentation of the P. aeruginosa culture was remarkably reduced after CAP treatment. Further mechanical exploration was performed by utilizing mutants with loss of functional genes involved in pyocyanin biosynthesis, including P. aeruginosa PAO1 strain‐derived phzA1::Tn, phzA2::Tn, ΔphzA1/ΔphzA2, phzM::Tn and phzS::Tn, as well as corresponding gene deletion mutants based on clinical PA1 isolate. The results indicated that pyocyanin and its intermediate 5‐methyl phenazine‐1‐carboxylic acid (5‐Me‐PCA) play important roles in P. aeruginosa resistance to CAP treatment. The unique enzymes, such as PhzM in the pyocyanin biosynthetic pathway, could be novel targets for the therapeutic strategy design to control the growing P. aeruginosa infections.
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Affiliation(s)
- Huyue Zhou
- Department of Pharmacy, The Second Affiliated Hospital, Army Medical University, Chongqing, 400037, China
| | - Yi Yang
- Department of Microbiology, College of Basic Medical Science, Army Medical University, Chongqing, 400038, China
| | - Weilong Shang
- Department of Microbiology, College of Basic Medical Science, Army Medical University, Chongqing, 400038, China
| | - Yifan Rao
- Department of Microbiology, College of Basic Medical Science, Army Medical University, Chongqing, 400038, China
| | - Juan Chen
- Department of Pharmacy, The Second Affiliated Hospital, Army Medical University, Chongqing, 400037, China
| | - Huagang Peng
- Department of Microbiology, College of Basic Medical Science, Army Medical University, Chongqing, 400038, China
| | - Jingbin Huang
- Department of Pharmacy, The Second Affiliated Hospital, Army Medical University, Chongqing, 400037, China
| | - Zhen Hu
- Department of Microbiology, College of Basic Medical Science, Army Medical University, Chongqing, 400038, China
| | - Rong Zhang
- Department of Pharmacy, The Second Affiliated Hospital, Army Medical University, Chongqing, 400037, China
| | - Xiancai Rao
- Department of Microbiology, College of Basic Medical Science, Army Medical University, Chongqing, 400038, China
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Chugh B, Sheetal, Singh M, Thakur S, Pani B, Singh AK, Saji VS. Extracellular Electron Transfer by Pseudomonas aeruginosa in Biocorrosion: A Review. ACS Biomater Sci Eng 2022; 8:1049-1059. [PMID: 35199512 DOI: 10.1021/acsbiomaterials.1c01645] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Microorganisms with extracellular electron transfer (EET) capability have gained significant attention for their different biotechnological applications, like biosensors, bioremediation, and microbial fuel cells. Current research affirmed that microbial EET potentially promotes corrosion of iron structures, termed microbiologically influenced corrosion (MIC). The sulfate-reducing (SRB) and nitrate-reducing (NRB) bacteria are the most investigated among the different MIC-promoting bacteria. Unlike extensively studied SRB corrosion, NRB corrosion has received less attention from researchers. Hence, this review focuses on EET by Pseudomonas aeruginosa, a pervasive bacterium competent for developing biofilms in marine habitats and oil pipelines. A comprehensive discussion on the fundamentals of EET mechanisms in MIC is provided first. After that, the review offers state-of-the-art insights into the latest research on the EET-assisted MIC by Pseudomonas aeruginosa. The role of electron transfer mediators has also been discussed to understand the mechanisms involved in a better way. This review will be beneficial to open up new opportunities for developing strategies for combating biocorrosion.
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Affiliation(s)
- Bhawna Chugh
- Department of Chemistry, Netaji Subhas University of Technology, Sector-3, Dwarka, New Delhi-110078, India
| | - Sheetal
- Department of Chemistry, Netaji Subhas University of Technology, Sector-3, Dwarka, New Delhi-110078, India
| | - Manjeet Singh
- Department of Chemistry, School of Physical Sciences, Mizoram University, Aizawl, Mizoram-796004, India
| | - Sanjeeve Thakur
- Department of Chemistry, Netaji Subhas University of Technology, Sector-3, Dwarka, New Delhi-110078, India
| | - Balaram Pani
- Department of Chemistry, Bhaskaracharya College of Applied Sciences, University of Delhi, Sector -2, Dwarka, New Delhi-110075, India
| | - Ashish Kumar Singh
- Department of Chemistry, Netaji Subhas University of Technology, Sector-3, Dwarka, New Delhi-110078, India.,Department of Applied Sciences, Bharati Vidyapeeth's College of Engineering, Paschim Vihar, New Delhi-110063, India
| | - Viswanathan S Saji
- Interdisciplinary Research Center for Advanced Materials, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
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Perry EK, Meirelles LA, Newman DK. From the soil to the clinic: the impact of microbial secondary metabolites on antibiotic tolerance and resistance. Nat Rev Microbiol 2022; 20:129-142. [PMID: 34531577 PMCID: PMC8857043 DOI: 10.1038/s41579-021-00620-w] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/02/2021] [Indexed: 02/08/2023]
Abstract
Secondary metabolites profoundly affect microbial physiology, metabolism and stress responses. Increasing evidence suggests that these molecules can modulate microbial susceptibility to commonly used antibiotics; however, secondary metabolites are typically excluded from standard antimicrobial susceptibility assays. This may in part account for why infections by diverse opportunistic bacteria that produce secondary metabolites often exhibit discrepancies between clinical antimicrobial susceptibility testing results and clinical treatment outcomes. In this Review, we explore which types of secondary metabolite alter antimicrobial susceptibility, as well as how and why this phenomenon occurs. We discuss examples of molecules that opportunistic and enteric pathogens either generate themselves or are exposed to from their neighbours, and the nuanced impacts these molecules can have on tolerance and resistance to certain antibiotics.
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Affiliation(s)
- Elena K Perry
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Lucas A Meirelles
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Dianne K Newman
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA.
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA.
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Liu Y, Yue S, Bilal M, Jan M, Wang W, Hu H, Zhang X. Development of Artificial Synthetic Pathway of Endophenazines in Pseudomonas chlororaphis P3. BIOLOGY 2022; 11:biology11030363. [PMID: 35336738 PMCID: PMC8945225 DOI: 10.3390/biology11030363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/19/2022] [Accepted: 02/22/2022] [Indexed: 11/16/2022]
Abstract
Simple Summary Terpenoid phenazines generally produced in Streptomyces exhibit potential antitumor and antibacterial activities. In this study, we designed and constructed an artificial biosynthetic pathway for the synthesis of terpenoid phenazines in Pseudomonas chlororaphis P3. We successfully synthesized endophenazine A and endophenazine A1 for the first time in Pseudomonas by introducing the prenyltransferase PpzP. Moreover, we revealed the biosynthetic pathway of endophenazine A1 in P. chlororaphis P3. This study enriches the diversity of phenazines in P. chlororaphis P3 and provides a reference for the heterologous synthesis of terpenoid phenazines. Abstract Endophenazine A is a terpenoid phenazine with phenazine-1-carboxylic acid (PCA), and dimethylallyl diphosphate (DMAPP) derived from the 2-methyl-D-erythritol-4-phosphate (MEP) pathway as the precursor, which shows good antimicrobial activity against several Gram-positive bacteria and fungi. However, the highest yield of endophenazine A was about 20 mg/L in Streptomyces, limiting its large-scale industrial development. Pseudomonas chlororaphis P3, possessing an efficient PCA synthesis and MEP pathways, is a suitable chassis to synthesize endophenazine A. Herein, we designed an artificial biosynthetic pathway for the synthesis of endophenazine A in P. chlororaphis P3. Primarily, the prenyltransferase PpzP from Streptomyces anulatus 9663 was introduced into P. chlororaphis P3 and successfully synthesized endophenazine A. Another phenazine compound, endophenazine A1, was discovered and identified as a leakage of the intermediate 4-hydroxy-3-methyl-2-butene pyrophosphate (HMBPP). Finally, the yield of endophenazine A reached 279.43 mg/L, and the yield of endophenazine A1 reached 189.2 mg/L by metabolic engineering and medium optimization. In conclusion, we successfully synthesized endophenazine A and endophenazine A1 in P. chlororaphis P3 for the first time and achieved the highest titer, which provides a reference for the heterologous synthesis of terpenoid phenazines.
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Affiliation(s)
- Ying Liu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.L.); (S.Y.); (M.J.); (W.W.); (H.H.)
| | - Shengjie Yue
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.L.); (S.Y.); (M.J.); (W.W.); (H.H.)
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China;
| | - Malik Jan
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.L.); (S.Y.); (M.J.); (W.W.); (H.H.)
| | - Wei Wang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.L.); (S.Y.); (M.J.); (W.W.); (H.H.)
- Shanghai Nongle Joint R&D Center on Biopesticides and Biofertilizers, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hongbo Hu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.L.); (S.Y.); (M.J.); (W.W.); (H.H.)
- Shanghai Nongle Joint R&D Center on Biopesticides and Biofertilizers, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xuehong Zhang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.L.); (S.Y.); (M.J.); (W.W.); (H.H.)
- Shanghai Nongle Joint R&D Center on Biopesticides and Biofertilizers, Shanghai Jiao Tong University, Shanghai 200240, China
- Correspondence: ; Tel.: +86-21-3420-6742
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Prevalence and correlates of phenazine resistance in culturable bacteria from a dryland wheat field. Appl Environ Microbiol 2022; 88:e0232021. [PMID: 35138927 DOI: 10.1128/aem.02320-21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Phenazines are a class of bacterially-produced redox-active natural antibiotics that have demonstrated potential as a sustainable alternative to traditional pesticides for the biocontrol of fungal crop diseases. However, the prevalence of bacterial resistance to agriculturally-relevant phenazines is poorly understood, limiting both the understanding of how these molecules might shape rhizosphere bacterial communities and the ability to perform risk assessment for off-target effects. Here, we describe profiles of susceptibility to the antifungal agent phenazine-1-carboxylic acid (PCA) across more than 100 bacterial strains isolated from a wheat field where PCA producers are indigenous and abundant. We find that Gram-positive bacteria are typically more sensitive to PCA than Gram-negative bacteria, but that there is also significant variability in susceptibility both within and across phyla. Phenazine-resistant strains are more likely to be isolated from the wheat rhizosphere, where PCA producers are also more abundant, compared to bulk soil. Furthermore, PCA toxicity is pH-dependent for most susceptible strains and broadly correlates with PCA reduction rates, suggesting that uptake and redox-cycling are important determinants of phenazine toxicity. Our results shed light on which classes of bacteria are most likely to be susceptible to phenazine toxicity in acidic or neutral soils. In addition, the taxonomic and phenotypic diversity of our strain collection represents a valuable resource for future studies on the role of natural antibiotics in shaping wheat rhizosphere communities. Importance Microbial communities contribute to crop health in important ways. For example, phenazine metabolites are a class of redox-active molecules made by diverse soil bacteria that underpin the biocontrol of wheat and other crops. Their physiological functions are nuanced: in some contexts they are toxic, in others, beneficial. While much is known about phenazine production and the effect of phenazines on producing strains, our ability to predict how phenazines might shape the composition of environmental microbial communities is poorly constrained; that phenazine prevalence in the rhizosphere is predicted to increase in arid soils as the climate changes provides an impetus for further study. As a step towards gaining a predictive understanding of phenazine-linked microbial ecology, we document the effects of phenazines on diverse bacteria that were co-isolated from a wheat rhizosphere and identify conditions and phenotypes that correlate with how a strain will respond to phenazines.
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Corbin DA, Miyake GM. Photoinduced Organocatalyzed Atom Transfer Radical Polymerization (O-ATRP): Precision Polymer Synthesis Using Organic Photoredox Catalysis. Chem Rev 2022; 122:1830-1874. [PMID: 34842426 PMCID: PMC9815475 DOI: 10.1021/acs.chemrev.1c00603] [Citation(s) in RCA: 78] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The development of photoinduced organocatalyzed atom transfer radical polymerization (O-ATRP) has received considerable attention since its introduction in 2014. Expanding on many of the advantages of traditional ATRP, O-ATRP allows well-defined polymers to be produced under mild reaction conditions using organic photoredox catalysts. As a result, O-ATRP has opened access to a range of sensitive applications where the use of a metal catalyst could be of concern, such as electronics, certain biological applications, and the polymerization of coordinating monomers. However, key limitations of this method remain and necessitate further investigation to continue the development of this field. As such, this review details the achievements made to-date as well as future research directions that will continue to expand the capabilities and application landscape of O-ATRP.
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Yue H, Miller AL, Khetrapal V, Jayaseker V, Wright S, Du L. Biosynthesis, regulation, and engineering of natural products from Lysobacter. Nat Prod Rep 2022; 39:842-874. [PMID: 35067688 DOI: 10.1039/d1np00063b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Covering: up to August 2021Lysobacter is a genus of Gram-negative bacteria that was classified in 1987. Several Lysobacter species are emerging as new biocontrol agents for crop protection in agriculture. Lysobacter are prolific producers of new bioactive natural products that are largely underexplored. So far, several classes of structurally interesting and biologically active natural products have been isolated from Lysobacter. This article reviews the progress in Lysobacter natural product research over the past ten years, including molecular mechanisms for biosynthesis, regulation and mode of action, genome mining of cryptic biosynthetic gene clusters, and metabolic engineering using synthetic biology tools.
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Affiliation(s)
- Huan Yue
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA.
| | - Amanda Lynn Miller
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA.
| | - Vimmy Khetrapal
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA.
| | - Vishakha Jayaseker
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA.
| | - Stephen Wright
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA.
| | - Liangcheng Du
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA.
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Liu F, Yang S, Xu F, Zhang Z, Lu Y, Zhang J, Wang G. Characteristics of biological control and mechanisms of Pseudomonas chlororaphis zm-1 against peanut stem rot. BMC Microbiol 2022; 22:9. [PMID: 34986788 PMCID: PMC8729073 DOI: 10.1186/s12866-021-02420-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 12/09/2021] [Indexed: 11/17/2022] Open
Abstract
Background Peanut stem rot is a serious plant disease that causes great economic losses. At present, there are no effective measures to prevent or control the occurrence of this plant disease. Biological control is one of the most promising plant disease control measures. In this study, Pseudomonas chlororaphis subsp. aurantiaca strain zm-1, a bacterial strain with potential biocontrol properties isolated by our team from the rhizosphere soil of Anemarrhena asphodeloides, was studied to control this plant disease. Methods We prepared extracts of Pseudomonas chloroaphis zm-1 extracellular antibacterial compounds (PECEs), determined their antifungal activities by confrontation assay, and identified their components by UPLC-MS/MS. The gene knockout strains were constructed by homologous recombination, and the biocontrol efficacy of P. chlororaphis zm-1 and its mutant strains were evaluated by pot experiments under greenhouse conditions and plot experiments, respectively. Results P. chlororaphis zm-1 could produce extracellular antifungal substances and inhibit the growth of Sclerotium rolfsii, the main pathogenic fungus causing peanut stem rot. The components of PECEs identified by UPLC-MS/MS showed that three kinds of phenazine compounds, i.e., 1-hydroxyphenazine, phenazine-1-carboxylic acid (PCA), and the core phenazine, were the principal components. In particular, 1-hydroxyphenazine produced by P. chlororaphis zm-1 showed antifungal activities against S. rolfsii, but 2-hydroxyphenazine did not. This is quite different with the previously reported. The extracellular compounds of two mutant strains, ΔphzH and ΔphzE, was analysed and showed that ΔphzE did not produce any phenazine compounds, and ΔphzH no longer produced 1-hydroxyphenazine but could still produce PCA and phenazine. Furthermore, the antagonistic ability of ΔphzH declined, and that of ΔphzE was almost completely abolished. According to the results of pot experiments under greenhouse conditions, the biocontrol efficacy of ΔphzH dramatically declined to 47.21% compared with that of wild-type P. chlororaphis zm-1 (75.63%). Moreover, ΔphzE almost completely lost its ability to inhibit S. rolfsii (its biocontrol efficacy was reduced to 6.19%). The results of the larger plot experiments were also consistent with these results. Conclusions P. chlororaphis zm-1 has the potential to prevent and control peanut stem rot disease. Phenazines produced and secreted by P. chlororaphis zm-1 play a key role in the control of peanut stem rot caused by S. rolfsii. These findings provide a new idea for the effective prevention and treatment of peanut stem rot. Supplementary Information The online version contains supplementary material available at 10.1186/s12866-021-02420-x.
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Affiliation(s)
- Fengying Liu
- Institute of Microbial Engineering, Laboratory of Bioresource and Applied Microbiology, School of Life Sciences, Henan University, Kaifeng, 475004, China.,Engineering Research Center for Applied Microbiology of Henan Province, Kaifeng, 475004, China
| | - Shan Yang
- Institute of Microbial Engineering, Laboratory of Bioresource and Applied Microbiology, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Fenghua Xu
- School of Pharmaceutical, Henan Univeristy, Kaifeng, 475004, China
| | - Zhen Zhang
- Institute of Microbial Engineering, Laboratory of Bioresource and Applied Microbiology, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Yifang Lu
- Institute of Microbial Engineering, Laboratory of Bioresource and Applied Microbiology, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Juanmei Zhang
- Engineering Research Center for Applied Microbiology of Henan Province, Kaifeng, 475004, China. .,School of Pharmaceutical, Henan Univeristy, Kaifeng, 475004, China. .,School of Life Sciences, Henan University, Jinming Street, Kaifeng, 475004, Henan, People's Republic of China.
| | - Gang Wang
- Institute of Microbial Engineering, Laboratory of Bioresource and Applied Microbiology, School of Life Sciences, Henan University, Kaifeng, 475004, China. .,Engineering Research Center for Applied Microbiology of Henan Province, Kaifeng, 475004, China. .,School of Life Sciences, Henan University, Jinming Street, Kaifeng, 475004, Henan, People's Republic of China.
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48
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Taheri M, Mohebat R, Moslemin MH. Microwave-Assisted Multi-Component Green Synthesis of Benzo[α]furo[2, 3-c]phenazine Derivatives via a Magnetically-Separable Fe3O4@rGO@ZnO-HPA Nanocatalyst under Solvent-Free Conditions. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.2019795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Milad Taheri
- Department of Chemistry, Islamic Azad University, Yazd Branch, Yazd, Iran
| | - Razieh Mohebat
- Department of Chemistry, Islamic Azad University, Yazd Branch, Yazd, Iran
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49
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Sun X, Zhang Y, Ma C, Yuan Q, Wang X, Wan H, Wang P. A Review of Recent Advances in Flexible Wearable Sensors for Wound Detection Based on Optical and Electrical Sensing. BIOSENSORS 2021; 12:10. [PMID: 35049637 PMCID: PMC8773881 DOI: 10.3390/bios12010010] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/16/2021] [Accepted: 12/17/2021] [Indexed: 05/27/2023]
Abstract
Chronic wounds that are difficult to heal can cause persistent physical pain and significant medical costs for millions of patients each year. However, traditional wound care methods based on passive bandages cannot accurately assess the wound and may cause secondary damage during frequent replacement. With advances in materials science and smart sensing technology, flexible wearable sensors for wound condition assessment have been developed that can accurately detect physiological markers in wounds and provide the necessary information for treatment decisions. The sensors can implement the sensing of biochemical markers and physical parameters that can reflect the infection and healing process of the wound, as well as transmit vital physiological information to the mobile device through optical or electrical signals. Most reviews focused on the applicability of flexible composites in the wound environment or drug delivery devices. This paper summarizes typical biochemical markers and physical parameters in wounds and their physiological significance, reviews recent advances in flexible wearable sensors for wound detection based on optical and electrical sensing principles in the last 5 years, and discusses the challenges faced and future development. This paper provides a comprehensive overview for researchers in the development of flexible wearable sensors for wound detection.
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Affiliation(s)
- Xianyou Sun
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, Zhejiang University, Hangzhou 310027, China; (X.S.); (Y.Z.); (C.M.); (Q.Y.); (X.W.)
| | - Yanchi Zhang
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, Zhejiang University, Hangzhou 310027, China; (X.S.); (Y.Z.); (C.M.); (Q.Y.); (X.W.)
| | - Chiyu Ma
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, Zhejiang University, Hangzhou 310027, China; (X.S.); (Y.Z.); (C.M.); (Q.Y.); (X.W.)
| | - Qunchen Yuan
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, Zhejiang University, Hangzhou 310027, China; (X.S.); (Y.Z.); (C.M.); (Q.Y.); (X.W.)
| | - Xinyi Wang
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, Zhejiang University, Hangzhou 310027, China; (X.S.); (Y.Z.); (C.M.); (Q.Y.); (X.W.)
| | - Hao Wan
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, Zhejiang University, Hangzhou 310027, China; (X.S.); (Y.Z.); (C.M.); (Q.Y.); (X.W.)
- Binjiang Institute of Zhejiang University, Hangzhou 310053, China
| | - Ping Wang
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, Zhejiang University, Hangzhou 310027, China; (X.S.); (Y.Z.); (C.M.); (Q.Y.); (X.W.)
- Binjiang Institute of Zhejiang University, Hangzhou 310053, China
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50
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Kosina SM, Rademacher P, Wetmore KM, de Raad M, Zemla M, Zane GM, Zulovich JJ, Chakraborty R, Bowen BP, Wall JD, Auer M, Arkin AP, Deutschbauer AM, Northen TR. Biofilm Interaction Mapping and Analysis (BIMA) of Interspecific Interactions in Pseudomonas Co-culture Biofilms. Front Microbiol 2021; 12:757856. [PMID: 34956122 PMCID: PMC8696352 DOI: 10.3389/fmicb.2021.757856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 11/04/2021] [Indexed: 11/13/2022] Open
Abstract
Pseudomonas species are ubiquitous in nature and include numerous medically, agriculturally and technologically beneficial strains of which the interspecific interactions are of great interest for biotechnologies. Specifically, co-cultures containing Pseudomonas stutzeri have been used for bioremediation, biocontrol, aquaculture management and wastewater denitrification. Furthermore, the use of P. stutzeri biofilms, in combination with consortia-based approaches, may offer advantages for these processes. Understanding the interspecific interaction within biofilm co-cultures or consortia provides a means for improvement of current technologies. However, the investigation of biofilm-based consortia has been limited. We present an adaptable and scalable method for the analysis of macroscopic interactions (colony morphology, inhibition, and invasion) between colony-forming bacterial strains using an automated printing method followed by analysis of the genes and metabolites involved in the interactions. Using Biofilm Interaction Mapping and Analysis (BIMA), these interactions were investigated between P. stutzeri strain RCH2, a denitrifier isolated from chromium (VI) contaminated soil, and 13 other species of pseudomonas isolated from non-contaminated soil. One interaction partner, Pseudomonas fluorescens N1B4 was selected for mutant fitness profiling of a DNA-barcoded mutant library; with this approach four genes of importance were identified and the effects on interactions were evaluated with deletion mutants and mass spectrometry based metabolomics.
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Affiliation(s)
- Suzanne M. Kosina
- Environmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Peter Rademacher
- Environmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Kelly M. Wetmore
- Environmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Markus de Raad
- Environmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Marcin Zemla
- Environmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Grant M. Zane
- Department of Biochemistry, University of Missouri, Columbia, MO, United States
| | | | - Romy Chakraborty
- Environmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Benjamin P. Bowen
- Environmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
- Lawrence Berkeley National Laboratory, Joint Genome Institute, Berkeley, CA, United States
| | - Judy D. Wall
- Department of Biochemistry, University of Missouri, Columbia, MO, United States
| | - Manfred Auer
- Environmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Adam P. Arkin
- Environmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Adam M. Deutschbauer
- Environmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Trent R. Northen
- Environmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
- Lawrence Berkeley National Laboratory, Joint Genome Institute, Berkeley, CA, United States
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