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Aftab U, Sajid I. Antitumor Peptides from Streptomyces sp. SSA 13, Isolated from Arabian Sea. Int J Pept Res Ther 2016. [DOI: 10.1007/s10989-016-9552-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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52
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Rosés C, Camó C, Vogels K, Planas M, Feliu L. Solid-Phase Synthesis of Cyclic Depsipeptides Containing a Tyrosine Phenyl Ester Bond. Org Lett 2016; 18:4140-3. [PMID: 27494794 DOI: 10.1021/acs.orglett.6b02281] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first solid-phase strategy for the synthesis of cyclic depsipeptides containing a phenyl ester linkage in their structure is described. The key steps of the synthesis were the formation of the phenyl ester bond and the on-resin head-to-side-chain cyclization. The amino acid configuration significantly influenced the formation and the stability of the cyclic depsipeptides. The presence of a l-Tyr(1) and a d-Tyr(7) led to the most stable sequences.
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Affiliation(s)
- Cristina Rosés
- LIPPSO, Department of Chemistry, University of Girona , Maria Aurèlia Capmany 69, 17003 Girona, Spain
| | - Cristina Camó
- LIPPSO, Department of Chemistry, University of Girona , Maria Aurèlia Capmany 69, 17003 Girona, Spain
| | - Kristy Vogels
- LIPPSO, Department of Chemistry, University of Girona , Maria Aurèlia Capmany 69, 17003 Girona, Spain
| | - Marta Planas
- LIPPSO, Department of Chemistry, University of Girona , Maria Aurèlia Capmany 69, 17003 Girona, Spain
| | - Lidia Feliu
- LIPPSO, Department of Chemistry, University of Girona , Maria Aurèlia Capmany 69, 17003 Girona, Spain
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Nair D, Vanuopadath M, Nair BG, Pai JG, Nair SS. Identification and characterization of a library of surfactins and fengycins from a marine endophytic Bacillus sp. J Basic Microbiol 2016; 56:1159-1172. [PMID: 27160506 DOI: 10.1002/jobm.201600029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 04/24/2016] [Indexed: 11/05/2022]
Abstract
An endophytic bacterial strain from a marine green alga, Ulva lactuca, was isolated and identified by 16S rRNA gene sequencing method. The bacterial isolate was found to secrete two major families of cyclic depsilipopeptides, surfactins, and fengycins. Sequencing of the isolated lipopeptides was carried out using the MSn data obtained from an electrospray ionization (ESI) ion trap mass spectrometer coupled to an HPLC system. The assigned sequences were confirmed by a chemical derivatization approach involving esterification followed by mass spectrometric analysis. Distinction of leucine residues from isoleucine was established through a combined electron transfer dissociation-collision-induced dissociation (ETD-CID) method. The fengycins described in this study were found to cause significant delay of growth of two plants, Vigna radiata (mung bean) and Oryza sativa (rice). To the best of our knowledge, this is the first study describing identification and characterization of cyclic peptides from an endophytic Bacillus sp. isolated from marine algae.
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Affiliation(s)
- Divya Nair
- Amrita School of Biotechnology, Amrita Vishwa Vidyapeetham, Clappana P.O. Kollam, Kerala, India
| | | | - Bipin G Nair
- Amrita School of Biotechnology, Amrita Vishwa Vidyapeetham, Clappana P.O. Kollam, Kerala, India
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Kalai-Grami L, Karkouch I, Naili O, Slimene IB, Elkahoui S, Zekri RB, Touati I, Mnari-Hattab M, Hajlaoui MR, Limam F. Production and identification of iturin A lipopeptide from Bacillus methyltrophicus TEB1 for control of Phoma tracheiphila. J Basic Microbiol 2016; 56:864-71. [PMID: 27125201 DOI: 10.1002/jobm.201500683] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Accepted: 02/27/2016] [Indexed: 11/06/2022]
Abstract
A lipopeptide-producing endophytic Bacillus methyltrophicus TEB1 strain exhibited potent antifungal activity against Phoma tracheiphila. Lipopeptide production started at the early growth phase plateaued after 36 h of culture where it reduced the mycelium growth by 80%. The crude lipopeptide extract harvested at the stationary phase efficiently inhibited the growth of P. tracheiphila mycelium and MIC values displaying 50 and 90% inhibition of conidia germination were around 47.5 and 100 μg ml(-1) , respectively. Increasing lipopeptide extract till 3 mg ml(-1) induced 10% swelling and 3% crumbling of P. tracheiphila conidia whereas 5 mg ml(-1) induced 40% swelling and 20% crumbling. Mass spectrometry analysis of the lipopeptide extract indicated that surfactin production took place from 12 to 20 h, iturin A from 16 to 72 h, and fengycin from 12 to 72 h and that the main active compound against P. tracheiphila was identified as C15 iturin A lipopeptide. Iturin A appeared as a potential biological control agent able to substitute the currently used chemical pesticides in agriculture.
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Affiliation(s)
- Leila Kalai-Grami
- Laboratoire des Substances Bioactives, CBBC, Hammam-Lif, Tunisia.,Laboratoire de Biotechnologie Appliquée à l'Agriculture, INRA, Hedi Karray, Tunis, Tunisia
| | - Ines Karkouch
- Laboratoire des Substances Bioactives, CBBC, Hammam-Lif, Tunisia
| | - Omar Naili
- Laboratoire de Biotechnologie Appliquée à l'Agriculture, INRA, Hedi Karray, Tunis, Tunisia
| | - Imen Ben Slimene
- Laboratoire des Substances Bioactives, CBBC, Hammam-Lif, Tunisia
| | - Salem Elkahoui
- Laboratoire des Substances Bioactives, CBBC, Hammam-Lif, Tunisia
| | | | - Ines Touati
- Laboratoire des Substances Bioactives, CBBC, Hammam-Lif, Tunisia
| | - Monia Mnari-Hattab
- Laboratoire de Biotechnologie Appliquée à l'Agriculture, INRA, Hedi Karray, Tunis, Tunisia
| | - Mohamed Rabeh Hajlaoui
- Laboratoire de Biotechnologie Appliquée à l'Agriculture, INRA, Hedi Karray, Tunis, Tunisia
| | - Ferid Limam
- Laboratoire des Substances Bioactives, CBBC, Hammam-Lif, Tunisia
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55
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Mnif I, Grau-Campistany A, Coronel-León J, Hammami I, Triki MA, Manresa A, Ghribi D. Purification and identification of Bacillus subtilis SPB1 lipopeptide biosurfactant exhibiting antifungal activity against Rhizoctonia bataticola and Rhizoctonia solani. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:6690-6699. [PMID: 26645234 DOI: 10.1007/s11356-015-5826-3] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 11/16/2015] [Indexed: 06/05/2023]
Abstract
This study reports the potential of a soil bacterium, Bacillus subtilis strain SPB1, to produce lipopeptide biosurfactants. Firstly, the crude lipopeptide mixture was tested for its inhibitory activity against phytopathogenic fungi. A minimal inhibitory concentration (MIC), an inhibitory concentration at 50% (IC50%), and an inhibitory concentration at 90% (IC90%) values were determined to be 0.04, 0.012, and 0.02 mg/ml, respectively, for Rhizoctonia bataticola with a fungistatic mode of action. For Rhizoctonia solani, a MIC, an IC50%, and IC90% values were determined to be 4, 0.25, and 3.3 mg/ml, respectively, with a fungicidal mode of action. For both of the fungi, a loss of sclerotial integrity, granulation and fragmentation of hyphal mycelia, followed by hyphal shriveling and cell lysis were observed with the treatment with SPB1 biosurfactant fraction. After extraction, separation, and purification, different lipopeptide compounds were identified in the culture filtrate of strain SPB1. Mass spectroscopic analysis confirmed the presence of different lipopeptide compounds consisting of surfactin isoforms with molecular weights of 1007, 1021, and 1035 Da; iturin isoforms with molecular weights of 1028, 1042, and 1056 Da; and fengycin isoforms with molecular weights of 1432 and 1446 Da. Two new clusters of lipopeptide isoforms with molecular weights of 1410 and 1424 Da and 973 and 987 Da, respectively, were also detected. This study reported the ability of a B. subtilis strain to co-produce lipopeptide isoforms with potential use as antifungal compounds.
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Affiliation(s)
- Inès Mnif
- Unit "Enzymes and Bioconversion," National School of Engineers of Sfax, University of Sfax, Sfax, Tunisia.
- Higher Institute of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia.
- Inès Mnif, Unité "Enzyme et Bioconversion," ENIS, BP W 3038, Sfax, Tunisia.
| | - Ariadna Grau-Campistany
- Faculty of Chemistry, Department of Organic Chemistry, University of Barcelona, Joan XXIII s/n, 08028, Barcelona, Spain
| | - Jonathan Coronel-León
- Laboratory of Microbiology, Faculty of Pharmacy, University of Barcelona, Joan XXIII s/n, 08028, Barcelona, Spain
| | - Inès Hammami
- Higher School of Agriculture of Kef, 7119, Kef, Tunisia
| | - Mohamed Ali Triki
- Laboratory "Amélioration et Protection des Ressources Génétiques de l'Olivier," Institut de l'Olivier, University of Sfax, Sfax, Tunisia
| | - Angeles Manresa
- Laboratory of Microbiology, Faculty of Pharmacy, University of Barcelona, Joan XXIII s/n, 08028, Barcelona, Spain
| | - Dhouha Ghribi
- Unit "Enzymes and Bioconversion," National School of Engineers of Sfax, University of Sfax, Sfax, Tunisia
- Higher Institute of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
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56
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Ali GS, El-Sayed ASA, Patel JS, Green KB, Ali M, Brennan M, Norman D. Ex Vivo Application of Secreted Metabolites Produced by Soil-Inhabiting Bacillus spp. Efficiently Controls Foliar Diseases Caused by Alternaria spp. Appl Environ Microbiol 2016; 82:478-90. [PMID: 26519395 PMCID: PMC4711143 DOI: 10.1128/aem.02662-15] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 10/26/2015] [Indexed: 11/20/2022] Open
Abstract
Bacterial biological control agents (BCAs) are largely used as live products to control plant pathogens. However, due to variable environmental and ecological factors, live BCAs usually fail to produce desirable results against foliar pathogens. In this study, we investigated the potential of cell-free culture filtrates of 12 different bacterial BCAs isolated from flower beds for controlling foliar diseases caused by Alternaria spp. In vitro studies showed that culture filtrates from two isolates belonging to Bacillus subtilis and Bacillus amyloliquefaciens displayed strong efficacy and potencies against Alternaria spp. The antimicrobial activity of the culture filtrate of these two biological control agents was effective over a wider range of pH (3.0 to 9.0) and was not affected by autoclaving or proteolysis. Comparative liquid chromatography-mass spectrometry (LC-MS) analyses showed that a complex mixture of cyclic lipopeptides, primarily of the fengycin A and fengycin B families, was significantly higher in these two BCAs than inactive Bacillus spp. Interaction studies with mixtures of culture filtrates of these two species revealed additive activity, suggesting that they produce similar products, which was confirmed by LC-tandem MS analyses. In in planta pre- and postinoculation trials, foliar application of culture filtrates of B. subtilis reduced lesion sizes and lesion frequencies caused by Alternaria alternata by 68 to 81%. Taken together, our studies suggest that instead of live bacteria, culture filtrates of B. subtilis and B. amyloliquefaciens can be applied either individually or in combination for controlling foliar diseases caused by Alternaria species.
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Affiliation(s)
- Gul Shad Ali
- Mid-Florida Research and Education Center and Department of Plant Pathology, University of Florida/Institute of Food and Agricultural Sciences, Apopka, Florida, USA
| | - Ashraf S A El-Sayed
- Mid-Florida Research and Education Center and Department of Plant Pathology, University of Florida/Institute of Food and Agricultural Sciences, Apopka, Florida, USA Microbiology Department, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Jaimin S Patel
- Mid-Florida Research and Education Center and Department of Plant Pathology, University of Florida/Institute of Food and Agricultural Sciences, Apopka, Florida, USA
| | - Kari B Green
- Department of Chemistry, University of Florida, Gainesville, Florida, USA
| | - Mohammad Ali
- Mid-Florida Research and Education Center and Department of Plant Pathology, University of Florida/Institute of Food and Agricultural Sciences, Apopka, Florida, USA
| | - Mary Brennan
- Mid-Florida Research and Education Center and Department of Plant Pathology, University of Florida/Institute of Food and Agricultural Sciences, Apopka, Florida, USA
| | - David Norman
- Mid-Florida Research and Education Center and Department of Plant Pathology, University of Florida/Institute of Food and Agricultural Sciences, Apopka, Florida, USA
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57
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Muhammad SA, Ali A, Naz A, Hassan A, Riaz N, Saeed-ul-Hassan S, Andleeb S, Barh D. A New Broad-Spectrum Peptide Antibiotic Produced by Bacillus brevis Strain MH9 Isolated from Margalla Hills of Islamabad, Pakistan. Int J Pept Res Ther 2016. [DOI: 10.1007/s10989-015-9508-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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58
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Narendra Kumar P, Swapna TH, Khan MY, Reddy G, Hameeda B. Statistical optimization of antifungal iturin A production from Bacillus amyloliquefaciens RHNK22 using agro-industrial wastes. Saudi J Biol Sci 2015; 24:1722-1740. [PMID: 30294240 PMCID: PMC6169434 DOI: 10.1016/j.sjbs.2015.09.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 09/01/2015] [Accepted: 09/06/2015] [Indexed: 10/27/2022] Open
Abstract
Biosurfactants are secondary metabolites with surface active properties and have wide application in agriculture, industrial and therapeutic products. The present study was aimed to screen bacteria for the production of biosurfactant, its characterization and development of a cost effective media formulation for iturin A production. A total of 100 bacterial isolates were isolated from different rhizosphere soil samples by enrichment culture method and screened for biosurfactant activity. Twenty isolates were selected for further studies based on their biosurfactant activity [emulsification index (EI%), emulsification assay (EA), surface tension (ST) reduction] and antagonistic activity. Among them one potential isolate Bacillus sp. RHNK22 showed good EI% and EA with different hydrocarbons tested in this study. Using biochemical methods and 16S rRNA gene sequence, it was identified as Bacillus amyloliquefaciens. Presence of iturin A in RHNK22 was identified by gene specific primers and confirmed as iturin A by FTIR and HPLC. B. amyloliquefaciens RHNK22 exhibited good surface active properties and antifungal activity against Sclerotium rolfsii and Macrophomina phaseolina. For cost-effective production of iturin A, 16 different agro-industrial wastes were screened as substrates, and Sunflower oil cake (SOC) was favouring high iturin A production. Further, using response surface methodology (RSM) model, there was a 3-fold increase in iturin A production (using SOC 4%, inoculum size 1%, at pH 6.0 and 37 °C temperature in 48 h). This is the first report on using SOC as a substrate for iturin A production.
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Affiliation(s)
- P Narendra Kumar
- Dept of Microbiology, University College of Science, Osmania University, Hyderabad 500 007, India
| | - T H Swapna
- Dept of Microbiology, University College of Science, Osmania University, Hyderabad 500 007, India
| | - Mohamed Yahya Khan
- Dept of Microbiology, University College of Science, Osmania University, Hyderabad 500 007, India
| | - Gopal Reddy
- Dept of Microbiology, University College of Science, Osmania University, Hyderabad 500 007, India
| | - Bee Hameeda
- Dept of Microbiology, University College of Science, Osmania University, Hyderabad 500 007, India
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59
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Płaza G, Chojniak J, Rudnicka K, Paraszkiewicz K, Bernat P. Detection of biosurfactants in Bacillus species: genes and products identification. J Appl Microbiol 2015; 119:1023-34. [PMID: 26171834 DOI: 10.1111/jam.12893] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 06/15/2015] [Accepted: 06/22/2015] [Indexed: 11/30/2022]
Abstract
AIM To screen environmental Bacillus strains for detection of genes encoding the enzymes involved in biosurfactant synthesis and to evaluate their products e.g. surfactin, iturin and fengycin. MATERIALS AND RESULTS The taxonomic identification of isolated from the environment Bacillus strains was performed by Microgene ID Bacillus panel and GEN III Biolog system. The polymerase chain reaction (PCR) strategy for screening of genes in Bacillus strains was set up. Liquid chromatography-mass spectrometry (LC-MS/MS) method was used for the identification of lipopeptides (LPs). All studied strains exhibited the presence of srfAA gene and produced surfactin mostly as four homologues (C13 to C16). Moreover, in 2 strains (KP7, T'-1) simultaneous co-production of 3 biosurfactants: surfactin, iturin and fengycin was observed. Additionally, it was found out that isolate identified as Bacillus subtilis ssp. subtilis (KP7), beside LPs co-production, synthesizes surfactin with the efficiency much higher than other studied strains (40·2 mg l(-1) ) and with the yield ranging from 0·8 to 8·3 mg l(-1) . CONCLUSION We showed that the combined methodology based on PCR and LC-MS/MS technique is an optimal tool for the detection of genes encoding enzymes involved in biosurfactant synthesis as well as their products, e.g. surfactin, iturin and fengycin. This approach improves the screening and the identification of environmental Bacillus co-producing biosurfactants-stimulating and facilitating the development of this area of science. SIGNIFICANCE AND IMPACT OF THE STUDY The findings of this work will help to improve screening of biosurfactant producers. Discovery of novel biosurfactants and biosurfactants co-production ability has shed light on their new application fields and for the understanding of their interactions and properties.
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Affiliation(s)
- G Płaza
- Department of Environmental Microbiology, Institute for Ecology of Industrial Areas, Katowice, Poland
| | - J Chojniak
- Department of Environmental Microbiology, Institute for Ecology of Industrial Areas, Katowice, Poland
| | - K Rudnicka
- Laboratory of Gastroimmunology, Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
| | - K Paraszkiewicz
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
| | - P Bernat
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
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60
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Han Y, Zhang B, Shen Q, You C, Yu Y, Li P, Shang Q. Purification and Identification of Two Antifungal Cyclic Peptides Produced by Bacillus amyloliquefaciens L-H15. Appl Biochem Biotechnol 2015; 176:2202-12. [PMID: 26123083 DOI: 10.1007/s12010-015-1708-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Accepted: 06/08/2015] [Indexed: 12/16/2022]
Abstract
Bacillus amyloliquefaciens L-H15 with broad spectrum antifungal activity was used as a biocontrol agent to suppress Fusarium oxysporum and other soil-borne fungal plant pathogens. Two antifungal fractions were isolated by bioactivity-guided reversed-phase high-performance liquid chromatography. The two compounds were identified by tandem Q-TOF mass spectroscopy as C15 Iturin A (1) and a novel cyclic peptide with a molecular weight of 852.4 Da (2). Both compounds showed good inhibitory activities against three plant fungal pathogens in cylinder-plate diffusion assay. To our best knowledge, this is the first report on a cyclic antifungal peptide with a molecular weight of 852.4 Da. The strong antifungal activity suggests that the B. amyloliquefaciens L-H15 and its bioactive components might provide an alternative resource for the biocontrol of plant diseases and sustainable agriculture.
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MESH Headings
- Antifungal Agents/chemistry
- Antifungal Agents/isolation & purification
- Antifungal Agents/pharmacology
- Bacillus/chemistry
- Chromatography, High Pressure Liquid
- Chromatography, Reverse-Phase
- Chromatography, Thin Layer
- Fungi/drug effects
- Microbial Sensitivity Tests
- Peptides, Cyclic/chemistry
- Peptides, Cyclic/isolation & purification
- Peptides, Cyclic/pharmacology
- Spectrometry, Mass, Electrospray Ionization
- Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
- Tandem Mass Spectrometry
- Ultrafiltration
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Affiliation(s)
- Yuzhu Han
- College of Food Science and Nutritional Engineering, China Agricultural University, Room 410, East District, 17# Qinghua East Road, Beijing, 100083, China
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Brack C, Mikolasch A, Schlueter R, Otto A, Becher D, Wegner U, Albrecht D, Riedel K, Schauer F. Antibacterial metabolites and bacteriolytic enzymes produced by Bacillus pumilus during bacteriolysis of Arthrobacter citreus. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2015; 17:290-304. [PMID: 25678259 DOI: 10.1007/s10126-015-9614-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 12/24/2014] [Indexed: 06/04/2023]
Abstract
The marine isolate Bacillus pumilus SBUG 1800 is able to lyse living cells of Arthrobacter citreus on solid media as well as pasteurized A. citreus cells in liquid mineral salt medium. The cultivation of B. pumilus in the presence of pasteurized A. citreus is accompanied by an enhanced production of 2,5-diketopiperazines (DKPs). DKPs inhibit bacterial growth, but do not seem to cause bacteriolysis. This study shows that B. pumilus also lyses living cells of A. citreus in co-culture experiments as an intraguild predator, even if the inoculum of B. pumilus is low. In order to characterize the bacteriolytic process, more precisely changes in the extracellular metabolome and proteome have been analyzed under different culture conditions. Besides the known DKPs, a number of different pumilacidins and bacteriolytic enzymes are produced. Two lipopeptides with [M + H](+) = 1008 and [M + H](+) = 1022 were detected and are proposed to be pumilacidin H and I. While the lipopeptides lyse living bacterial cells in lysis test assays, a set of extracellular enzymes degrades the dead cell material. Two of the cell wall hydrolases involved have been identified as N-acetylmuramoyl-L-alanine amidase and beta-N-acetylglucosaminidase. These findings together with electron microscopic and cell growth monitoring during co-culture experiments give a detailed view on the bacteriolytic process.
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Affiliation(s)
- Christiane Brack
- Institute of Microbiology, Ernst-Moritz-Arndt-University of Greifswald, Friedrich-Ludwig Jahn-Str. 15, 17487, Greifswald, Germany,
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Dhanarajan G, Rangarajan V, Sen R. Dual gradient macroporous resin column chromatography for concurrent separation and purification of three families of marine bacterial lipopeptides from cell free broth. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.01.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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63
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Gong AD, Li HP, Yuan QS, Song XS, Yao W, He WJ, Zhang JB, Liao YC. Antagonistic mechanism of iturin A and plipastatin A from Bacillus amyloliquefaciens S76-3 from wheat spikes against Fusarium graminearum. PLoS One 2015; 10:e0116871. [PMID: 25689464 PMCID: PMC4331432 DOI: 10.1371/journal.pone.0116871] [Citation(s) in RCA: 125] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Accepted: 12/15/2014] [Indexed: 11/19/2022] Open
Abstract
Controlling toxigenic Fusarium graminearum (FG) is challenging. A bacterial strain (S76-3, identified as Bacillus amyloliquefaciens) that was isolated from diseased wheat spikes in the field displayed strong antifungal activity against FG. Reverse-phase high performance liquid chromatography and electrospray ionization mass spectrometry analyses revealed that S76-3 produced three classes of cyclic lipopeptides including iturin, plipastatin and surfactin. Each class consisted of several different molecules. The iturin and plipastatin fractions strongly inhibited FG; the surfactin fractions did not. The most abundant compound that had antagonistic activity from the iturin fraction was iturin A (m/z 1043.35); the most abundant active compound from the plipastatin fraction was plipastatin A (m/z 1463.90). These compounds were analyzed with collision-induced dissociation mass spectrometry. The two purified compounds displayed strong fungicidal activity, completely killing conidial spores at the minimal inhibitory concentration range of 50 µg/ml (iturin A) and 100 µg/ml (plipastatin A). Optical and fluorescence microscopy analyses revealed severe morphological changes in conidia and substantial distortions in FG hyphae treated with iturin A or plipastatin A. Iturin A caused leakage and/or inactivation of FG cellular contents and plipastatin A caused vacuolation. Time-lapse imaging of dynamic antagonistic processes illustrated that iturin A caused distortion and conglobation along hyphae and inhibited branch formation and growth, while plipastatin A caused conglobation in young hyphae and branch tips. Transmission electron microscopy analyses demonstrated that the cell walls of conidia and hyphae of iturin A and plipastatin A treated FG had large gaps and that their plasma membranes were severely damaged and separated from cell walls.
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Affiliation(s)
- An-Dong Gong
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
| | - He-Ping Li
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
| | - Qing-Song Yuan
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
| | - Xiu-Shi Song
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
| | - Wei Yao
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
| | - Wei-Jie He
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
| | - Jing-Bo Zhang
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
| | - Yu-Cai Liao
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
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Yang H, Li X, Li X, Yu H, Shen Z. Identification of lipopeptide isoforms by MALDI-TOF-MS/MS based on the simultaneous purification of iturin, fengycin, and surfactin by RP-HPLC. Anal Bioanal Chem 2015; 407:2529-42. [PMID: 25662934 DOI: 10.1007/s00216-015-8486-8] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Revised: 12/12/2014] [Accepted: 01/13/2015] [Indexed: 11/24/2022]
Abstract
A three-stage linear gradient strategy using reverse-phase high-performance liquid chromatography (HPLC) was optimized for rapid, high-quality, and simultaneous purification of the lipopeptide isoforms of iturin, fengycin, and surfactin, which may differ in composition by only a single amino acid and/or the fatty acid residue. Matrix-assisted laser desorption ionization time-of-flight tandem mass spectrometry (MALDI-TOF-MS/MS) was applied to detect the lipopeptides harvested from each reversed-phase HPLC peak. Amino acid analysis based on phenyl isothiocyanate derivatization was further used for confirmation of the amino acid species and molar ratio in a certain HPLC fraction. By this MALDI-TOF-MS/MS coupled with amino acid analysis, it was revealed that iturin at m/z 1,043 consists of a circular Asn-Tyr-Asn-Gln-Pro-Asn-Ser peptide and C14 β-OH fatty acid. Surfactin homologs from Bacillus subtilis THY-7 at m/z 1,030, 1,044, 1,058, and 1,072 possess a circular Glu-Leu-Leu-Val-Asp-Leu-Leu peptide and the β-OH fatty acid with a different length (C13-C16). Fengycin species at m/z 1,463 and 1,477 are homologs possessing the circular peptide Glu-Orn-Tyr-Thr-Glu-Ala-Pro-Gln-Tyr-Ile linked to a C16 or C17 γ-OH fatty acid, whereas fengycin at m/z 1,505 contains a Glu-Orn-Tyr-Thr-Glu-Val-Pro-Gln-Tyr-Ile sequence with a Val instead of Ala at position 6. The method developed in this work provided an efficient approach for characterization of diverse lipopeptide isoforms from the iturin, fengycin, and surfactin families.
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Affiliation(s)
- Huan Yang
- Key Laboratory for Industrial Biocatalysis of Ministry of Education, Department of Chemical Engineering, Tsinghua University, 100084, Beijing, China
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65
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Sumi CD, Yang BW, Yeo IC, Hahm YT. Antimicrobial peptides of the genus Bacillus: a new era for antibiotics. Can J Microbiol 2014; 61:93-103. [PMID: 25629960 DOI: 10.1139/cjm-2014-0613] [Citation(s) in RCA: 193] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The rapid onset of resistance reduces the efficacy of most conventional antimicrobial drugs and is a general cause of concern for human well-being. Thus, there is great demand for a continuous supply of novel antibiotics to combat this problem. Bacteria-derived antimicrobial peptides (AMPs) have long been used as food preservatives; moreover, prior to the development of conventional antibiotics, these AMPs served as an efficient source of antibiotics. Recently, peptides produced by members of the genus Bacillus were shown to have a broad spectrum of antimicrobial activity against pathogenic microbes. Bacillus-derived AMPs can be synthesized both ribosomally and nonribosomally and can be classified according to peptide biosynthesis, structure, and molecular weight. The precise mechanism of action of these AMPs is not yet clear; however, one proposed mechanism is that these AMPs kill bacteria by forming channels in and (or) disrupting the bacterial cell wall. Bacillus-derived AMPs have potential in the pharmaceutical industry, as well as the food and agricultural sectors. Here, we focus on Bacillus-derived AMPs as a novel alternative approach to antibacterial drug development. We also provide an overview of the biosynthesis, mechanisms of action, applications, and effectiveness of different AMPs produced by members of the Bacillus genus, including several recently identified novel AMPs.
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Affiliation(s)
- Chandra Datta Sumi
- a Department of Systems Biotechnology, Chung-Ang University, 72-1 Nae-Ri, Daeduk-Myun, Anseong-Si, Gyeonggi-Do 456-756, South Korea
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66
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Novel fluorinated lipopeptides from Bacillus sp. CS93 via precursor-directed biosynthesis. Amino Acids 2014; 46:2745-52. [DOI: 10.1007/s00726-014-1830-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 08/21/2014] [Indexed: 10/24/2022]
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67
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Falcäo LL, Silva-Werneck JO, Vilarinho BR, da Silva JP, Pomella AWV, Marcellino LH. Antimicrobial and plant growth-promoting properties of the cacao endophyte Bacillus subtilis ALB629. J Appl Microbiol 2014; 116:1584-92. [PMID: 24905220 DOI: 10.1111/jam.12485] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 01/30/2014] [Accepted: 02/17/2014] [Indexed: 10/25/2022]
Abstract
AIMS To investigate the effects of the endophyte Bacillus subtilisALB629 on the growth of cacao seedlings at early developmental stage and to evaluate its antimicrobial properties. METHODS AND RESULTS Germinating cacao seeds were inoculated with ALB629, and seedlings growth was evaluated 30 days later. Significant increase (P < 0·05) was observed in the root system (up to 30%), leaf area (14%) and stem height (7·6%). ALB629 colonized the entire plant, prevailing over indigenous micro-organisms. In addition, it was tested in vitro, by pairing assays, and showed antagonistic effect against the phytopathogenic fungi Moniliophthora perniciosa, Colletotrichum sp. and C. gossypii. When tested in cacao-grafting procedure in the field, ALB629 increased the grafting success rate (24%), indicating its protective effect. In addition, this Bacillus secretes an antagonist compound, as shown by the antifungal activity of the cell-free culture. CONCLUSIONS Bacillus subtilisALB629 promotes cacao root growth, besides promoting growth of the aerial part of cacao seedlings. It has antimicrobial properties and produces an antifungal compound. SIGNIFICANCE AND IMPACT OF THE STUDY ALB629 presented beneficial characteristics for cacao cultivation, being a good biological control agent candidate. Furthermore, it is a potential source of antifungal compound with potential for commercial exploitation.
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Affiliation(s)
- L L Falcäo
- Embrapa Genetic Resources and Biotechnology, Brasília, DF, Brazil
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68
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Optimization of antifungal lipopeptide production from Bacillus sp. BH072 by response surface methodology. J Microbiol 2014; 52:324-32. [DOI: 10.1007/s12275-014-3354-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Revised: 09/09/2013] [Accepted: 10/14/2013] [Indexed: 10/25/2022]
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69
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Revathi K, Chandrasekaran R, Thanigaivel A, Kirubakaran SA, Sathish-Narayanan S, Senthil-Nathan S. Effects of Bacillus subtilis metabolites on larval Aedes aegypti L. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2013; 107:369-376. [PMID: 24267699 DOI: 10.1016/j.pestbp.2013.10.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2013] [Revised: 10/02/2013] [Accepted: 10/02/2013] [Indexed: 06/02/2023]
Abstract
The culture supernatant of a strain of Bacillus subtilis isolated from soil samples killed larvae of the mosquito Aedes aegypti. The metabolites produced by B. subtilis were characterized using high performance liquid chromatography (HPLC). Mortality rate was dose-dependent for all larval instars of A. aegypti. Log probit analysis (95% confidence level) revealed an LC50 of 1.73 and an LC90 3.71μg/ml. Molecular weights/masses of B. subtilis metabolites were confirmed using SDS-PAGE analysis. B. subtilis metabolites were confirmed using HPLC analysis. We demonstrate that secondary metabolites from B. subtilis have larvicidal activity against A. aegypti and may be suitable for the control of this and other mosquito vectors of human disease. The larvae to the metabolites, significant reduction in the activities of acetylcholinesterse, α-carboxylesterase, and acid phosphatases were recorded.
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Affiliation(s)
- Kannan Revathi
- Division of Biopesticides and Environmental Toxicology, Sri Paramakalyani Centre for Excellence in Environmental Sciences, Manonmaniam Sundaranar University, Alwarkurichi, 627 412 Tirunelveli, Tamil Nadu, India
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70
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Purification and Partial Characterization of Bacillomycin L Produced by Bacillus amyloliquefaciens K103 from Lemon. Appl Biochem Biotechnol 2013; 171:2262-72. [DOI: 10.1007/s12010-013-0424-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Accepted: 08/05/2013] [Indexed: 12/29/2022]
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71
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Wang H, Sun Y, Chen C, Sun Z, Zhou Y, Shen F, Zhang H, Dai Y. Genome shuffling of Lactobacillus plantarum for improving antifungal activity. Food Control 2013. [DOI: 10.1016/j.foodcont.2012.12.020] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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72
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Leães FL, Velho RV, Caldas DGG, Pinto JV, Tsai SM, Brandelli A. Influence of pH and temperature on the expression of sboA and ituD genes in Bacillus sp. P11. Antonie van Leeuwenhoek 2013; 104:149-54. [PMID: 23677688 DOI: 10.1007/s10482-013-9935-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Accepted: 05/06/2013] [Indexed: 10/26/2022]
Abstract
Temperature and pH are key factors influencing the production of antimicrobial peptides. In this work, qRT-PCR methodology was used to demonstrate the effect of these two variables on sboA (subtilosin A) and ituD (iturin A) expression in Bacillus sp. P11, an isolate from aquatic environment of the Amazon. Bacillus sp. P11 was incubated in BHI broth for 36 h at 30, 37 and 42 °C, and the pH values were 6.0, 7.4 and 8.0. The production of subtilosin A and iturin A was confirmed by mass spectrometry. The sboA expression increased 200-fold when the initial pH was 8.0. In contrast, ituD expression was maximum at pH 6.0. Increased temperature (42 °C) was adverse for both genes, but ituD expression increased at 37 °C. Expression of sboA and ituD was strongly affected by pH and temperature and qRT-PCR proved to be a powerful tool to investigate the potential of Bacillus strains to produce subtilosin A and iturin A.
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Affiliation(s)
- Fernanda Leal Leães
- Laboratório de Bioquímica e Microbiologia Aplicada, Universidade Federal do Rio Grande do Sul UFRGS, ICTA-UFRGS, Av. Bento Gonçalves 9500, Porto Alegre 91501-970, Brazil
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73
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Isolation and characterization of an antimicrobial substance from Bacillus subtilis BY08 antagonistic to Bacillus cereus and Listeria monocytogenes. Food Sci Biotechnol 2013. [DOI: 10.1007/s10068-013-0098-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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74
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Zhao X, Zhou ZJ, Han Y, Wang ZZ, Fan J, Xiao HZ. Isolation and identification of antifungal peptides from Bacillus BH072, a novel bacterium isolated from honey. Microbiol Res 2013; 168:598-606. [PMID: 23545354 DOI: 10.1016/j.micres.2013.03.001] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2013] [Revised: 02/27/2013] [Accepted: 03/02/2013] [Indexed: 10/27/2022]
Abstract
A bacterial strain BH072 isolated from a honey sample showed antifungal activity against mold. Based on morphological, biochemical, physiological tests, and analysis of 16S rDNA sequence, the strain was identified to be a new subspecies of Bacillus sp. It had a broad spectrum of antifungal activity against various mold, such as Aspergillus niger, Pythium, and Botrytis cinerea. Six pairs of antifungal genes primers were designed and synthesized, and ituA, hag, tasA genes were detected by PCR analysis. The remarkable antifungal activity could be associated with the co-production of these three peptides. One of them was purified by 30-40% ammonium sulfate precipitation, Sephadex G-75 gel filtration and anion exchange chromatography on D201 resin. The purified peptide was estimated to be 35.615 kDa and identified to be flagellin by micrOTOF-Q II. By using methanol extraction, another substance was isolated from fermentation liquor, and determined to be iturin with liquid chromatography-mass spectrometry (LC-MS) method. The third possible peptide encoded by tasA was not isolated in this study. The culture liquor displayed antifungal activity in a wide pH range (5.0-9.0) and at 40-100°C. The result of the present work suggested that Bacillus BH072 might be a bio-control bacterium of research value.
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Affiliation(s)
- Xin Zhao
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
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75
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Wang W, Chen LN, Wu H, Zang H, Gao S, Yang Y, Xie S, Gao X. Comparative proteomic analysis of rice seedlings in response to inoculation with Bacillus cereus. Lett Appl Microbiol 2013; 56:208-15. [PMID: 23216197 DOI: 10.1111/lam.12035] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2012] [Revised: 11/29/2012] [Accepted: 11/29/2012] [Indexed: 01/09/2023]
Abstract
UNLABELLED Reports suggest that Bacillus spp. can be used to increase plant growth and resistance to disease, but the molecular mechanisms underlying the interaction between Bacillus spp. and plant is not completely understood. In the present study, to clarify these underlying mechanisms, the interaction between Bacillus cereus and rice was investigated using two-dimensional gel electrophoresis. Through comparative analysis, a total of 31 differentially expressed proteins were obtained upon B. cereus NMSL88 treatment, including 22 proteins that were up-regulated and nine that were down-regulated. These data indicated that certain proteins involved in plant growth and development were up-regulated, such as xyloglucan endotransglycosylase. Interestingly, proteins involved in defence were also up-regulated, including peroxidases, glutathione S-transferases and kinases. Thus, proteins associated with disease resistance characteristics were induced in the plants after exposure to B. cereus NMSL88. In addition, several proteins involved in protein and lipid metabolism showed significant changes in expression. SIGNIFICANCE AND IMPACT OF THE STUDY The present study is the first report to reveal the molecular mechanisms involved in rice seedlings in response to inoculation with Bacillus cereus at the level of proteome. The results demonstrated that B. cereus NMSL88 can up-regulate the expression of proteins related to plant growth and defence, and lead to enhanced plant growth and disease resistance.
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Affiliation(s)
- W Wang
- Key Laboratory of Integrated Management of Crop Diseases and Pests, College of Plant Protection, Ministry of Education, Nanjing Agricultural University, Nanjing, China
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76
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Baindara P, Mandal SM, Chawla N, Singh PK, Pinnaka AK, Korpole S. Characterization of two antimicrobial peptides produced by a halotolerant Bacillus subtilis strain SK.DU.4 isolated from a rhizosphere soil sample. AMB Express 2013; 3:2. [PMID: 23289832 PMCID: PMC3549917 DOI: 10.1186/2191-0855-3-2] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2012] [Accepted: 01/02/2013] [Indexed: 11/10/2022] Open
Abstract
A bacterial strain producing two antimicrobial peptides was isolated from a rhizosphere soil sample and identified as Bacillus subtilis based on both phenotypic and 16S rRNA gene sequence phylogenetic analysis. It grew optimally up to 14% NaCl and produced antimicrobial peptide within 24 h of growth. The peptides were purified using a combination of chemical extraction and chromatographic techniques. The MALDI-TOF analysis of HPLC purified fractions revealed that the strain SK.DU.4 secreted a bacteriocin-like peptide with molecular mass of 5323.9 Da and a surface-active lipopeptide (m/z 1056 Da). The peptide mass fingerprinting of low-molecular-weight bacteriocin exhibited significant similarity with stretches of secreted lipoprotein of Methylomicrobium album BG8 and displayed 70% sequence coverage. MALDI MS/MS analysis elucidated the lipopeptide as a cyclic lipopeptide with a β-hydroxy fatty acid linked to Ser of a peptide with seven α-amino acids (Asp-Tyr-Asn-Gln-Pro-Asn-Ser) and assigned it to iturin-like group of antimicrobial biosurfactants. However, it differed in amino acid composition with other members of the iturin family. Both peptides were active against Gram-positive bacteria, suggesting that they had an additive effect.
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Affiliation(s)
- Piyush Baindara
- MTCC and Gene Bank, CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh, 160036, India
| | - Santi M Mandal
- Central Research Facility, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Niharika Chawla
- MTCC and Gene Bank, CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh, 160036, India
| | - Pradip Kumar Singh
- MTCC and Gene Bank, CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh, 160036, India
| | - Anil Kumar Pinnaka
- MTCC and Gene Bank, CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh, 160036, India
| | - Suresh Korpole
- MTCC and Gene Bank, CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh, 160036, India
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77
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Wang H, Yan Y, Wang J, Zhang H, Qi W. Production and characterization of antifungal compounds produced by Lactobacillus plantarum IMAU10014. PLoS One 2012; 7:e29452. [PMID: 22276116 PMCID: PMC3261852 DOI: 10.1371/journal.pone.0029452] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2011] [Accepted: 11/28/2011] [Indexed: 11/19/2022] Open
Abstract
Lactobacillus plantarum IMAU10014 was isolated from koumiss that produces a broad spectrum of antifungal compounds, all of which were active against plant pathogenic fungi in an agar plate assay. Two major antifungal compounds were extracted from the cell-free supernatant broth of L. plantarum IMAU10014. 3-phenyllactic acid and Benzeneacetic acid, 2-propenyl ester were carried out by HPLC, LC-MS, GC-MS, NMR analysis. It is the first report that lactic acid bacteria produce antifungal Benzeneacetic acid, 2-propenyl ester. Of these, the antifungal products also have a broad spectrum of antifungal activity, namely against Botrytis cinerea, Glomerella cingulate, Phytophthora drechsleri Tucker, Penicillium citrinum, Penicillium digitatum and Fusarium oxysporum, which was identified by the overlay and well-diffusion assay. F. oxysporum, P. citrinum and P. drechsleri Tucker were the most sensitive among molds.
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Affiliation(s)
- HaiKuan Wang
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, People's Republic of China
- * E-mail: (hw); (hz)
| | - YanHua Yan
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, People's Republic of China
| | - JiaMing Wang
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, People's Republic of China
| | - HePing Zhang
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Huhhot, People's Republic of China
- * E-mail: (hw); (hz)
| | - Wei Qi
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, People's Republic of China
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78
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Benitez LB, Velho RV, de Souza da Motta A, Segalin J, Brandelli A. Antimicrobial factor from Bacillus amyloliquefaciens inhibits Paenibacillus larvae, the causative agent of American foulbrood. Arch Microbiol 2011; 194:177-85. [PMID: 21858429 DOI: 10.1007/s00203-011-0743-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2011] [Revised: 07/08/2011] [Accepted: 08/02/2011] [Indexed: 10/17/2022]
Abstract
Bacillus amyloliquefaciens LBM 5006 produces an antimicrobial factor active against Paenibacillus larvae, a major honeybee pathogen. The antagonistic effect and the mode of action of the antimicrobial factor were investigated. The antibacterial activity was produced starting at mid-logarithmic growth phase, reaching its maximum during the stationary phase. Exposure of cell suspensions of P. larvae to this antimicrobial resulted in loss of cell viability and reduction in optical density associated with cell lysis. Scanning electron microscopy showed damaged cell envelope and loss of protoplasmic material. The antimicrobial factor was stable for up to 80°C, but it was sensitive to proteinase K and trypsin. Mass spectrometry analysis indicates that the antimicrobial activity is associated with iturin-like peptides. The antimicrobial factor from B. amyloliquefaciens LBM 5006 showed a bactericidal effect against P. larvae cells and spores. This is the first report on iturin activity against P. larvae. This antimicrobial presents potential for use in the control of American foulbrood disease.
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Affiliation(s)
- Lisianne Brittes Benitez
- Laboratório de Bioquímica e Microbiologia Aplicada, Instituto de Ciência e Tecnologia de Alimentos, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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79
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Velho RV, Medina LFC, Segalin J, Brandelli A. Production of lipopeptides among Bacillus strains showing growth inhibition of phytopathogenic fungi. Folia Microbiol (Praha) 2011; 56:297-303. [DOI: 10.1007/s12223-011-0056-7] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Accepted: 04/28/2011] [Indexed: 11/24/2022]
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80
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Lee NK, Yeo IC, Park JW, Hahm YT. Growth Inhibition and Induction of Stress Protein, GroEL, of Bacillus cereus Exposed to Antibacterial Peptide Isolated from Bacillus subtilis SC-8. Appl Biochem Biotechnol 2011; 165:235-42. [DOI: 10.1007/s12010-011-9246-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2011] [Accepted: 04/04/2011] [Indexed: 01/17/2023]
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81
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Benitez LB, Velho RV, Lisboa MP, da Costa Medina LF, Brandelli A. Isolation and characterization of antifungal peptides produced by Bacillus amyloliquefaciens LBM5006. J Microbiol 2011; 48:791-7. [DOI: 10.1007/s12275-010-0164-0] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2010] [Accepted: 08/23/2010] [Indexed: 10/18/2022]
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82
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Lee NK, Yeo IC, Park JW, Kang BS, Hahm YT. Isolation and characterization of a novel analyte from Bacillus subtilis SC-8 antagonistic to Bacillus cereus. J Biosci Bioeng 2010; 110:298-303. [PMID: 20547349 DOI: 10.1016/j.jbiosc.2010.03.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2009] [Revised: 03/03/2010] [Accepted: 03/04/2010] [Indexed: 10/19/2022]
Abstract
In this study, an effective substance was isolated from Bacillus subtilis SC-8, which was obtained from traditionally fermented soybean paste, cheonggukjang. The substance was purified by HPLC, and its properties were analyzed. It had an adequate antagonistic effect on Bacilluscereus, and its spectrum of activity was narrow. When tested on several gram-negative and gram-positive foodborne pathogenic bacteria such as Salmonella enterica, Salmonella enteritidis, Staphylococcus aureus, and Listeria monocytogenes, no antagonistic effect was observed. Applying the derivative from B. subtilis SC-8 within the same genus did not inhibit the growth of major soybean-fermenting bacteria such as Bacillus subtilis, Bacillus licheniformis, and Bacillus amyloquefaciens. The range of pH stability of the purified antagonistic substance was wide (from 4.0 to >10.0), and the substance was thermally stable up to 60 degrees C. In the various enzyme treatments, the antagonistic activity of the purified substance was reduced with proteinase K, protease, and lipase; its activity was partially destroyed with esterase. Spores of B. cereus did not grow at all in the presence of 5mug/mL of the purified antagonistic substance. The isolated antagonistic substance was thought to be an antibiotic-like lipopeptidal compound and was tentatively named BSAP-254 because it absorbed to UV radiation at 254nm.
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Affiliation(s)
- Nam Keun Lee
- Department of Biotechnology (BK21 Program), Chung-Ang University, An-seong, 456-756, Republic of Korea
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83
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Wu XC, Shen XB, Ding R, Qian CD, Fang HH, Li O. Isolation and partial characterization of antibiotics produced by Paenibacillus elgii B69. FEMS Microbiol Lett 2010; 310:32-8. [DOI: 10.1111/j.1574-6968.2010.02040.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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84
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Pecci Y, Rivardo F, Martinotti MG, Allegrone G. LC/ESI-MS/MS characterisation of lipopeptide biosurfactants produced by the Bacillus licheniformis V9T14 strain. JOURNAL OF MASS SPECTROMETRY : JMS 2010; 45:772-8. [PMID: 20623484 DOI: 10.1002/jms.1767] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Lipopeptide biosurfactants produced by the Bacillus licheniformis V9T14 strain showed an interesting anti-adhesion activity against biofilm formation of human pathogenic bacterial strains. The chemical characterisation of the crude extract of V9T14 strain was first developed through electrospray ionisation mass spectrometry (ESI-MS) and ESI-MS/MS direct infusions: two sets of molecular ion species belonging to the fengycin and surfactin families were revealed and their structures defined, interpreting their product ion spectra. The LC/ESI-MS analysis of the crude extract allowed to separate in different chromatogram ranges the homologues and the isoforms of the two lipopeptide families. The extract was then fractionated by silica gel chromatography in two main fractions, I and II. The purified biosurfactants were analysed through a new, rapid and suitable LC/ESI-MS/MS method, which allowed characterising the composition and the structures of the produced lipopeptides. LC/ESI-MS/MS analysis of fraction I showed the presence of C(13), C(14) and C(15) surfactin homologues, whose structures were confirmed by the product ion spectra of the sodiated molecules [M + Na](+) at m/z 1030, 1044 and 1058. LC/ESI-MS/MS analysis of fraction II confirmed the presence of two main fengycin isoforms, with the protonated molecules [M + H](+) at m/z 1478 and 1506 corresponding to C(17) fengycin A and C(17) fengycin B, respectively. Other homologues (C(14) to C(16)) were revealed and confirmed as belonging to fengycin A or B according to the retention times and the product ions generated, although with the same nominal mass. Finally, a relative percentage content of each homologue for both lipopeptides families in the whole extract was proposed.
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Affiliation(s)
- Ylenia Pecci
- Department of Chemical, Food, Pharmaceutical and Pharmacological Sciences (DiSCAFF), Drug and Food Biotechnology Centre, University of Eastern Piedmont, Via Bovio 6, 28100 Novara, Italy
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Thasana N, Prapagdee B, Rangkadilok N, Sallabhan R, Aye SL, Ruchirawat S, Loprasert S. Bacillus subtilis SSE4 produces subtulene A, a new lipopeptide antibiotic possessing an unusual C15 unsaturated beta-amino acid. FEBS Lett 2010; 584:3209-14. [PMID: 20541548 DOI: 10.1016/j.febslet.2010.06.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2010] [Revised: 05/31/2010] [Accepted: 06/03/2010] [Indexed: 10/19/2022]
Abstract
Subtulene A, a new cyclic lipopeptide, was isolated from the culture broth of Bacillus subtilis SSE4. This antibiotic compound contained the seven common alpha-amino acids, L-Asn-1, D-Tyr-2, D-Asn-3, L-Gln-4, L-Pro-5, D-Asn-6, L-Ser-7 and the unique beta-amino acid-8 present in the iturin family. 1D and 2D NMR, as well as MS analyses, identified the beta-amino acid as 3-amino-13-methyltetradec-8-enoic acid, an Iso C15 long chain beta-amino acid. B. subtilis SSE4 was also found to produce iturin A. B. subtilis SSE4 culture filtrate exhibited both antifungal and antibacterial activities.
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Affiliation(s)
- Nopporn Thasana
- Chemical Biology Program, Chulabhorn Graduate Institute, Bangkok, Thailand
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86
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Moran S, Robertson K, Paradisi F, Rai DK, Murphy CD. Production of lipopeptides in Bacillus sp. CS93 isolated from Pozol. FEMS Microbiol Lett 2010; 304:69-73. [DOI: 10.1111/j.1574-6968.2009.01882.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Identification and characterization of a mosquito pupicidal metabolite of a Bacillus subtilis subsp. subtilis strain. Appl Microbiol Biotechnol 2010; 86:1737-44. [DOI: 10.1007/s00253-010-2449-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2009] [Revised: 01/08/2010] [Accepted: 01/12/2010] [Indexed: 10/19/2022]
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