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Sun S, Li F, Xu X, Liu Y, Kong X, Chen J, Liu T, Chen L. Study on the community structure and function of symbiotic bacteria from different growth and developmental stages of Hypsizygus marmoreus. BMC Microbiol 2020; 20:311. [PMID: 33054730 PMCID: PMC7557082 DOI: 10.1186/s12866-020-01998-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 10/05/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The symbiotic bacteria associated with edible fungi are valuable microbial resources worthy of in-depth exploration. It is important to analyze the community structure and succession of symbiotic bacteria in mushrooms. This can assist in the isolation of growth-promoting strains that have an essential relationship with the cultivation cycle as well as the agronomic traits and yields of fruiting bodies. RESULTS In all of the samples from cultivation bags of Hypsizygus marmoreus, 34 bacterial phyla were detected. Firmicutes was the most abundant bacterial phylum (78.85%). The genus Serratia showed an exponential increase in abundance in samples collected from the cultivation bags in the mature period, reaching a peak abundance of 55.74% and the dominant symbiotic flora. The most predominant strain was Serratia odorifera HZSO-1, and its abundance increased with the amount of hyphae of H. marmoreus. Serratia odorifera HZSO-1 could reside in the hyphae of H. marmoreus, promote growth and development, shorten the fruiting cycle by 3-4 days, and further increase the fruiting body yield by 12%. CONCLUSIONS This study is a pioneering demonstration of the community structure of the symbiotic microbiota and bacteria-mushroom interaction in the growth and development of edible fungi. This work lays a theoretical foundation to improve the industrial production of mushrooms with symbiotic bacteria as assisting agents.
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Affiliation(s)
- Shujing Sun
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China.
| | - Fan Li
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China
| | - Xin Xu
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China
| | - Yunchao Liu
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China
| | - Xuqiang Kong
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China
| | - Jianqiu Chen
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China
| | - Ting Liu
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China
| | - Liding Chen
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China
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Hanif MK, Malik KA, Hameed S, Saddique MJ, Ayesha, Fatima K, Naqqash T, Majeed A, Iqbal MJ, Imran A. Growth stimulatory effect of AHL producing Serratia spp. from potato on homologous and non-homologous host plants. Microbiol Res 2020; 238:126506. [DOI: 10.1016/j.micres.2020.126506] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 05/08/2020] [Indexed: 11/26/2022]
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Su C, Xiang Z, Liu Y, Zhao X, Sun Y, Li Z, Li L, Chang F, Chen T, Wen X, Zhou Y, Zhao F. Analysis of the genomic sequences and metabolites of Serratia surfactantfaciens sp. nov. YD25 T that simultaneously produces prodigiosin and serrawettin W2. BMC Genomics 2016; 17:865. [PMID: 27809759 PMCID: PMC5094094 DOI: 10.1186/s12864-016-3171-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 10/18/2016] [Indexed: 12/27/2022] Open
Abstract
Background Gram-negative bacteria of the genus Serratia are potential producers of many useful secondary metabolites, such as prodigiosin and serrawettins, which have potential applications in environmental bioremediation or in the pharmaceutical industry. Several Serratia strains produce prodigiosin and serrawettin W1 as the main bioactive compounds, and the biosynthetic pathways are co-regulated by quorum sensing (QS). In contrast, the Serratia strain, which can simultaneously produce prodigiosin and serrawettin W2, has not been reported. This study focused on analyzing the genomic sequence of Serratia sp. strain YD25T isolated from rhizosphere soil under continuously planted burley tobacco collected from Yongding, Fujian province, China, which is unique in producing both prodigiosin and serrawettin W2. Results A hybrid polyketide synthases (PKS)-non-ribosomal peptide synthetases (NRPS) gene cluster putatively involved in biosynthesis of antimicrobial serrawettin W2 was identified in the genome of YD25T, and its biosynthesis pathway was proposed. We found potent antimicrobial activity of serrawettin W2 purified from YD25T against various pathogenic bacteria and fungi as well as antitumor activity against Hela cells. Subsequently, comparative genomic analyses were performed among a total of 133 Serratia species. The prodigiosin biosynthesis gene cluster in YD25T belongs to the type I pig cluster, which is the main form of pig-encoding genes existing in most of the pigmented Serratia species. In addition, a complete autoinducer-2 (AI-2) system (including luxS, lsrBACDEF, lsrGK, and lsrR) as a conserved bacterial operator is found in the genome of Serratia sp. strain YD25T. Phylogenetic analysis based on concatenated Lsr and LuxS proteins revealed that YD25T formed an independent branch and was clearly distant from the strains that solely produce either prodigiosin or serrawettin W2. The Fe (III) ion reduction assay confirmed that strain YD25T could produce an AI-2 signal molecule. Phylogenetic analysis using the genomic sequence of YD25T combined with phylogenetic and phenotypic analyses support this strain as a member of a novel and previously uncharacterized Serratia species. Conclusion Genomic sequence and metabolite analysis of Serratia surfactantfaciens YD25T indicate that this strain can be further explored for the production of useful metabolites. Unveiling the genomic sequence of S. surfactantfaciens YD25T benefits the usage of this unique strain as a model system for studying the biosynthesis regulation of both prodigiosin and serrawettin W2 by the QS system. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-3171-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Chun Su
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, People's Republic of China
| | - Zhaoju Xiang
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, People's Republic of China
| | - Yibo Liu
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, People's Republic of China
| | - Xinqing Zhao
- School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200000, China
| | - Yan Sun
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, People's Republic of China.
| | - Zhi Li
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, People's Republic of China.
| | - Lijun Li
- College of Food and Biological Engineering, Jimei University, Xiamen, 361000, China
| | - Fan Chang
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, People's Republic of China
| | - Tianjun Chen
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, People's Republic of China
| | - Xinrong Wen
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, People's Republic of China
| | - Yidan Zhou
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, People's Republic of China
| | - Furong Zhao
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, People's Republic of China
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Ee R, Lim YL, Yin WF, See-Too WS, Roberts RJ, Chan KG. Novel Methyltransferase Recognition Motif Identified in Chania multitudinisentens RB-25(T) gen. nov., sp. nov. Front Microbiol 2016; 7:1362. [PMID: 27630623 PMCID: PMC5005818 DOI: 10.3389/fmicb.2016.01362] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 08/17/2016] [Indexed: 11/13/2022] Open
Affiliation(s)
- Robson Ee
- Division of Genetics and Molecular Biology, Faculty of Science, Institute of Biological Sciences, University of Malaya Kuala Lumpur, Malaysia
| | - Yan-Lue Lim
- Division of Genetics and Molecular Biology, Faculty of Science, Institute of Biological Sciences, University of Malaya Kuala Lumpur, Malaysia
| | - Wai-Fong Yin
- Division of Genetics and Molecular Biology, Faculty of Science, Institute of Biological Sciences, University of Malaya Kuala Lumpur, Malaysia
| | - Wah-Seng See-Too
- Division of Genetics and Molecular Biology, Faculty of Science, Institute of Biological Sciences, University of Malaya Kuala Lumpur, Malaysia
| | | | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Faculty of Science, Institute of Biological Sciences, University of Malaya Kuala Lumpur, Malaysia
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Ee R, Madhaiyan M, Ji L, Lim YL, Nor NM, Tee KK, Chen JW, Yin WF. Chania multitudinisentens gen. nov., sp. nov., an N-acyl-homoserine-lactone-producing bacterium in the family Enterobacteriaceae isolated from landfill site soil. Int J Syst Evol Microbiol 2016; 66:2297-2304. [PMID: 26978486 DOI: 10.1099/ijsem.0.001025] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Phylogenetic and taxonomic characterization was performed for bacterium RB-25T, which was isolated from a soil sample collected in a former municipal landfill site in Puchong, Malaysia. Growth occurred at 20-37 °C at pH 5-8 but not in the presence of 9 % (w/v) NaCl or higher. The principal fatty acids were C16:0, C18:1ω7c and summed feature 3 (C16:1ω7c and/or iso-C15:0 2-OH). Ubiquinone-8 was the only isoprenoid quinone detected. Polar lipid analysis revealed the presence of phospholipid, phosphoaminolipid, phosphatidylethanolamine, phosphatidylglycerol and one unidentified aminolipid. DNA G+C content was 50.9 mol% phylogenetic analysis based on 16S rRNA gene sequence showed that strain RB-25T formed a distinct lineage within the family Enterobacteriaceae of the class Gammaproteobacteria. It exhibited a low level of 16S rRNA gene sequence similarity with its phylogenetic neighbours Pantoea rwandensis LMG 26275T (96.6 %), Rahnella aquatilis CIP 78.65T (96.5 %), Pectobacterium betavasculorum ATCC 43762T (96.4 %), Pantoea rodasii LMG 26273T (96.3 %), Gibbsiella dentisursi NUM 1720T (96.3 %) and Serratia glossinae C1T (96.2 %). Multilocus sequence analyses based on fusA, pyrG, rplB, rpoB and sucA sequences showed a clear distinction of strain RB-25T from the most closely related genera. Isolate RB-25T could also be distinguished from members of these genera by a combination of the DNA G+C content, respiratory quinone system, fatty acid profile, polar lipid composition and other phenotypic features. Strain RB-25T represents a novel species of a new genus, for which the name Chaniamultitudinisentens gen. nov., sp. nov. is proposed. The type strain is RB-25T (=DSM 28811T=LMG 28304T).
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Affiliation(s)
- Robson Ee
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Munusamy Madhaiyan
- Temasek Lifesciences Laboratory, 1 Research Link, National University of Singapore, Singapore 117604, Singapore
| | - Lianghui Ji
- Temasek Lifesciences Laboratory, 1 Research Link, National University of Singapore, Singapore 117604, Singapore
| | - Yan-Lue Lim
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Nuruddin Muhammad Nor
- Department of Microbiology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Kok-Keng Tee
- Centre of Excellence for Research in AIDS (CERiA), Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Jian-Woon Chen
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Wai-Fong Yin
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
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Zhang C, Zhu S, Jatt AN, Zeng M. Characterization of N-acyl homoserine lactones (AHLs) producing bacteria isolated from vacuum-packaged refrigerated turbot ( Scophthalmus maximus) and possible influence of exogenous AHLs on bacterial phenotype. J GEN APPL MICROBIOL 2016; 62:60-7. [DOI: 10.2323/jgam.62.60] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Caili Zhang
- College of Food Science and Engineering, Ocean University of China
| | - Suqin Zhu
- College of Food Science and Engineering, Ocean University of China
| | | | - Mingyong Zeng
- College of Food Science and Engineering, Ocean University of China
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Lim YL, Ee R, How KY, Lee SK, Yong D, Tee KK, Yin WF, Chan KG. Complete genome sequencing of Pandoraea pnomenusa RB38 and Molecular Characterization of Its N-acyl homoserine lactone synthase gene ppnI. PeerJ 2015; 3:e1225. [PMID: 26336650 PMCID: PMC4556143 DOI: 10.7717/peerj.1225] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Accepted: 08/11/2015] [Indexed: 01/05/2023] Open
Abstract
In this study, we sequenced the genome of Pandoraea pnomenusa RB38 using Pacific Biosciences RSII (PacBio) Single Molecule Real Time (SMRT) sequencing technology. A pair of cognate luxI/R homologs was identified where the luxI homolog, ppnI, was found adjacent to a luxR homolog, ppnR1. An additional orphan luxR homolog, ppnR2, was also discovered. Multiple sequence alignment and phylogenetic analysis revealed that ppnI is an N-acyl homoserine lactone (AHL) synthase gene that is distinct from those of the nearest phylogenetic neighbor viz. Burkholderia spp. High resolution tandem mass spectrometry (LC-MS/MS) analysis showed that Escherichia coli BL21 harboring ppnI produced a similar AHL profile (N-octanoylhomoserine lactone, C8-HSL) as P. pnomenusa RB38, the wild-type donor strain, confirming that PpnI directed the synthesis of AHL in P. pnomenusa RB38. To our knowledge, this is the first documentation of the luxI/R homologs of the genus Pandoraea.
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Affiliation(s)
- Yan-Lue Lim
- Division of Genetics and Molecular Biology, Faculty of Science, Institute of Biological Sciences, University of Malaya , Kuala Lumpur , Malaysia
| | - Robson Ee
- Division of Genetics and Molecular Biology, Faculty of Science, Institute of Biological Sciences, University of Malaya , Kuala Lumpur , Malaysia
| | - Kah-Yan How
- Division of Genetics and Molecular Biology, Faculty of Science, Institute of Biological Sciences, University of Malaya , Kuala Lumpur , Malaysia
| | - Siew-Kim Lee
- Division of Genetics and Molecular Biology, Faculty of Science, Institute of Biological Sciences, University of Malaya , Kuala Lumpur , Malaysia
| | - Delicia Yong
- Department of Medicine, Faculty of Medicine, University of Malaya , Kuala Lumpur , Malaysia
| | - Kok Keng Tee
- Department of Medicine, Faculty of Medicine, University of Malaya , Kuala Lumpur , Malaysia
| | - Wai-Fong Yin
- Division of Genetics and Molecular Biology, Faculty of Science, Institute of Biological Sciences, University of Malaya , Kuala Lumpur , Malaysia
| | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Faculty of Science, Institute of Biological Sciences, University of Malaya , Kuala Lumpur , Malaysia
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Lim YL, Yong D, Ee R, Tee KK, Yin WF, Chan KG. Complete genome sequence of Serratia multitudinisentens RB-25(T), a novel chitinolytic bacterium. J Biotechnol 2015; 207:32-3. [PMID: 25975625 DOI: 10.1016/j.jbiotec.2015.04.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 04/30/2015] [Indexed: 11/17/2022]
Abstract
Serratia multitudinisentens RB-25(T) (=DSM 28811(T) =LMG 28304(T)) is a newly proposed type strain in the genus of Serratia isolated from a municipal landfill site. Here, we present the complete genome of S. multitudinisentens RB-25(T) which contains a complete chitinase operon and other chitin and N-acetylglucosamine utilisation enzymes. To our knowledge, this is the first report of the complete genome sequence of this novel isolate and its chitinase gene discovery.
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Affiliation(s)
- Yan-Lue Lim
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Delicia Yong
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Robson Ee
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Kok-Keng Tee
- Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Wai-Fong Yin
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia.
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Li P, Kwok AHY, Jiang J, Ran T, Xu D, Wang W, Leung FC. Comparative genome analyses of Serratia marcescens FS14 reveals its high antagonistic potential. PLoS One 2015; 10:e0123061. [PMID: 25856195 PMCID: PMC4391916 DOI: 10.1371/journal.pone.0123061] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Accepted: 02/16/2015] [Indexed: 11/19/2022] Open
Abstract
S. marcescens FS14 was isolated from an Atractylodes macrocephala Koidz plant that was infected by Fusarium oxysporum and showed symptoms of root rot. With the completion of the genome sequence of FS14, the first comprehensive comparative-genomic analysis of the Serratia genus was performed. Pan-genome and COG analyses showed that the majority of the conserved core genes are involved in basic cellular functions, while genomic factors such as prophages contribute considerably to genome diversity. Additionally, a Type I restriction-modification system, a Type III secretion system and tellurium resistance genes are found in only some Serratia species. Comparative analysis further identified that S. marcescens FS14 possesses multiple mechanisms for antagonism against other microorganisms, including the production of prodigiosin, bacteriocins, and multi-antibiotic resistant determinants as well as chitinases. The presence of two evolutionarily distinct Type VI secretion systems (T6SSs) in FS14 may provide further competitive advantages for FS14 against other microbes. To our knowledge, this is the first report of comparative analysis on T6SSs in the genus, which identifies four types of T6SSs in Serratia spp.. Competition bioassays of FS14 against the vital plant pathogenic bacterium Ralstonia solanacearum and fungi Fusarium oxysporum and Sclerotinia sclerotiorum were performed to support our genomic analyses, in which FS14 demonstrated high antagonistic activities against both bacterial and fungal phytopathogens.
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Affiliation(s)
- Pengpeng Li
- Bioinformatics Center, Nanjing Agricultural University, Nanjing, China
| | - Amy H. Y. Kwok
- Bioinformatics Center, Nanjing Agricultural University, Nanjing, China
| | - Jingwei Jiang
- Bioinformatics Center, Nanjing Agricultural University, Nanjing, China
- School of Biological Sciences, University of Hong Kong, Hong Kong Special Administration Region, China
| | - Tingting Ran
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Dongqing Xu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Weiwu Wang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Frederick C. Leung
- Bioinformatics Center, Nanjing Agricultural University, Nanjing, China
- School of Biological Sciences, University of Hong Kong, Hong Kong Special Administration Region, China
- * E-mail:
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Cheng HJ, Ee R, Cheong YM, Tan WS, Yin WF, Chan KG. Detection of quorum sensing activity in the multidrug-resistant clinical isolate Pseudomonas aeruginosa strain GB11. SENSORS 2014; 14:12511-22. [PMID: 25019635 PMCID: PMC4168446 DOI: 10.3390/s140712511] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 06/24/2014] [Accepted: 07/08/2014] [Indexed: 11/26/2022]
Abstract
A multidrug-resistant clinical bacteria strain GB11 was isolated from a wound swab on the leg of a patient. Identity of stain GB11 as Pseudomonas aeruginosa was validated by using matrix-assisted laser desorption/ionization-time-of-flight mass spectrometry (MALDI-TOF MS). Detection of the production of signaling molecules, N-acylhomoserine lactones (AHLs), was conducted using three different bacterial biosensors. A total of four different AHLs were found to be produced by strain GB11, namely N-butyryl homoserine lactone (C4-HSL), N-hexanoylhomoserine lactone (C6-HSL), N-octanoyl homoserine lactone (C8-HSL) and N-3-oxo-dodecanoylhomoserine lactone (3-oxo-C12-HSL) using high resolution liquid chromatography tandem mass spectrometry (LC-MS/MS). Of these detected AHLs, 3-oxo-C12-HSL was found to be the most abundant AHL produced by P. aeruginosa GB11.
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Affiliation(s)
- Huey Jia Cheng
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Robson Ee
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Yuet Meng Cheong
- Jeffrey Cheah School of Medicine & Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, 46150 Bandar Sunway, Selangor Darul Ehsan, Malaysia.
| | - Wen-Si Tan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Wai-Fong Yin
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
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