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Qiao Y, Yin B, Zhou W, Wang M, Chang Z, Zhou J, Yue M, Chen J, Liu F, Feng Z. Nutrient consumption patterns of Lactobacillus acidophilus. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:5982-5990. [PMID: 38427028 DOI: 10.1002/jsfa.13424] [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: 11/13/2023] [Revised: 02/17/2024] [Accepted: 03/01/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND One of the greatest challenges in using Lactobacillus acidophilus as a probiotic is acid stress. The current research aimed to identify substances that help L. acidophilus resist acid stress; this was achieved through assessing its nutrient consumption patterns under various pH conditions. RESULTS The consumption rates of alanine, uracil, adenine, guanine, niacin, and manganese were consistently higher than 60% for L. acidophilus LA-5 cultured at pH 5.8, 4.9, and 4.4. The consumption rates of glutamic acid + glutamine and thiamine increased with decreasing pH and were higher than 60% at pH 4.9 and 4.4. The viable counts of L. acidophilus LA-5 were significantly increased under the corresponding acidic stress conditions (pH 4.9 and 4.4) through the appropriate addition of either alanine (3.37 and 2.81 mmol L-1), glutamic acid + glutamine (4.77 mmol L-1), guanine (0.13 and 0.17 mmol L-1), niacin (0.02 mmol L-1), thiamine (0.009 mmol L-1), or manganese (0.73 and 0.64 mmol L-1) (P < 0.05). The viable counts of L. acidophilus LA-5 cultured in a medium supplemented with combined nutritional factors was 1.02-1.03-fold of the counts observed in control medium under all acid conditions (P < 0.05). CONCLUSION Alanine, glutamic acid + glutamine, guanine, niacin, thiamine, and manganese can improve the growth of L. acidophilus LA-5 in an acidic environment in the present study. The results will contribute to optimizing strategies to enhance the acid resistance of L. acidophilus and expand its application in the fermentation industry. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Yali Qiao
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China
| | - Boxing Yin
- Yangzhou Yangda Kangyuan Dairy Co., Ltd, Yangzhou, China
| | - Wei Zhou
- Yangzhou Yangda Kangyuan Dairy Co., Ltd, Yangzhou, China
| | - Mengrui Wang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China
| | - Ziqing Chang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China
| | - Junping Zhou
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China
| | - Mingzhe Yue
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China
| | - Junxia Chen
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China
| | - Fei Liu
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China
| | - Zhen Feng
- Yangzhou Yangda Kangyuan Dairy Co., Ltd, Yangzhou, China
- Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning, China
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2
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Yamamoto Y. Roles of flavoprotein oxidase and the exogenous heme- and quinone-dependent respiratory chain in lactic acid bacteria. BIOSCIENCE OF MICROBIOTA, FOOD AND HEALTH 2024; 43:183-191. [PMID: 38966056 PMCID: PMC11220326 DOI: 10.12938/bmfh.2024-002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 04/22/2024] [Indexed: 07/06/2024]
Abstract
Lactic acid bacteria (LAB) are a type of bacteria that convert carbohydrates into lactate through fermentation metabolism. While LAB mainly acquire energy through this anaerobic process, they also have oxygen-consuming systems, one of which is flavoprotein oxidase and the other is exogenous heme- or heme- and quinone-dependent respiratory metabolism. Over the past two decades, research has contributed to the understanding of the roles of these oxidase machineries, confirming their suspected roles and uncovering novel functions. This review presents the roles of these oxidase machineries, which are anticipated to be critical for the future applications of LAB in industry and comprehending the virulence of pathogenic streptococci.
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Affiliation(s)
- Yuji Yamamoto
- Laboratory of Cellular Microbiology, School of Veterinary Medicine, Kitasato University, 23-35-1 Higashi, Towada, Aomori 034-8628, Japan
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3
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Derunets AS, Selimzyanova AI, Rykov SV, Kuznetsov AE, Berezina OV. Strategies to enhance stress tolerance in lactic acid bacteria across diverse stress conditions. World J Microbiol Biotechnol 2024; 40:126. [PMID: 38446232 DOI: 10.1007/s11274-024-03905-3] [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: 12/01/2023] [Accepted: 01/21/2024] [Indexed: 03/07/2024]
Abstract
Lactic acid bacteria (LAB) hold significant importance in diverse fields, including food technology, industrial biotechnology, and medicine. As basic components of starter cultures, probiotics, immunomodulators, and live vaccines, LAB cells resist a variety of stressors, including temperature fluctuations, osmotic and pH shocks, exposure to oxidants and ultraviolet radiation, substrate deprivation, mechanical damage, and more. To stay alive in these adversities, LAB employ a wide range of stress response strategies supported by various mechanisms, for example rearrangement of metabolism, expression of specialized biomolecules (e.g., chaperones and antioxidants), exopolysaccharide synthesis, and complex repair and regulatory systems. LAB can coordinate responses to various stressors using global regulators. In this review, we summarize current knowledge about stress response strategies used by LAB and consider mechanisms of response to specific stressful factors, supported by illustrative examples. In addition, we discuss technical approaches to increase the stress resistance of LAB, including pre-adaptation, genetic modification of strains, and adjustment of cultivation conditions. A critical analysis of the recent findings in this field augments comprehension of stress tolerance mechanisms in LAB, paving the way for prospective research directions with implications in fundamental and practical areas.
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Affiliation(s)
- A S Derunets
- National Research Center Kurchatov Institute, Moscow, Russia.
| | | | - S V Rykov
- National Research Center Kurchatov Institute, Moscow, Russia
| | - A E Kuznetsov
- D. Mendeleev University of Chemical Technology of Russia, Moscow, Russia
| | - O V Berezina
- National Research Center Kurchatov Institute, Moscow, Russia
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Stevens ET, Van Beeck W, Blackburn B, Tejedor-Sanz S, Rasmussen ARM, Carter ME, Mevers E, Ajo-Franklin CM, Marco ML. Lactiplantibacillus plantarum uses ecologically relevant, exogenous quinones for extracellular electron transfer. mBio 2023; 14:e0223423. [PMID: 37982640 PMCID: PMC10746273 DOI: 10.1128/mbio.02234-23] [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: 09/26/2023] [Accepted: 10/09/2023] [Indexed: 11/21/2023] Open
Abstract
IMPORTANCE While quinones are essential for respiratory microorganisms, their importance for microbes that rely on fermentation metabolism is not understood. This gap in knowledge hinders our understanding of anaerobic microbial habitats, such in mammalian digestive tracts and fermented foods. We show that Lactiplantibacillus plantarum, a model fermentative lactic acid bacteria species abundant in human, animal, and insect microbiomes and fermented foods, uses multiple exogenous, environmental quinones as electron shuttles for a hybrid metabolism involving EET. Interestingly, quinones both stimulate this metabolism as well as cause oxidative stress when extracellular electron acceptors are absent. We also found that quinone-producing, lactic acid bacteria species commonly enriched together with L. plantarum in food fermentations accelerate L. plantarum growth and medium acidification through a mainly quinone- and EET-dependent mechanism. Thus, our work provides evidence of quinone cross-feeding as a key ecological feature of anaerobic microbial habitats.
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Affiliation(s)
- Eric T. Stevens
- Department of Food Science and Technology, University of California‐Davis, Davis, California, USA
| | - Wannes Van Beeck
- Department of Food Science and Technology, University of California‐Davis, Davis, California, USA
| | - Benjamin Blackburn
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
| | - Sara Tejedor-Sanz
- Biological Nanostructures Facility, The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - Alycia R. M. Rasmussen
- Department of Food Science and Technology, University of California‐Davis, Davis, California, USA
| | - Mackenzie E. Carter
- Department of Food Science and Technology, University of California‐Davis, Davis, California, USA
| | - Emily Mevers
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
| | - Caroline M. Ajo-Franklin
- Biological Nanostructures Facility, The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California, USA
- Department of Biosciences, Rice University, Houston, USA
| | - Maria L. Marco
- Department of Food Science and Technology, University of California‐Davis, Davis, California, USA
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López de Felipe F. Revised Aspects into the Molecular Bases of Hydroxycinnamic Acid Metabolism in Lactobacilli. Antioxidants (Basel) 2023; 12:1294. [PMID: 37372024 DOI: 10.3390/antiox12061294] [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: 05/21/2023] [Revised: 06/14/2023] [Accepted: 06/15/2023] [Indexed: 06/29/2023] Open
Abstract
Hydroxycinnamic acids (HCAs) are phenolic compounds produced by the secondary metabolism of edible plants and are the most abundant phenolic acids in our diet. The antimicrobial capacity of HCAs is an important function attributed to these phenolic acids in the defense of plants against microbiological threats, and bacteria have developed diverse mechanisms to counter the antimicrobial stress imposed by these compounds, including their metabolism into different microbial derivatives. The metabolism of HCAs has been intensively studied in Lactobacillus spp., as the metabolic transformation of HCAs by these bacteria contributes to the biological activity of these acids in plant and human habitats or to improve the nutritional quality of fermented foods. The main mechanisms known to date used by Lactobacillus spp. to metabolize HCAs are enzymatic decarboxylation and/or reduction. Here, recent advances in the knowledge regarding the enzymes that contribute to these two enzymatic conversions, the genes involved, their regulation and the physiological significance to lactobacilli are reviewed and critically discussed.
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Affiliation(s)
- Félix López de Felipe
- Laboratorio de Biotecnología Bacteriana, Instituto de Ciencia y Tecnología de los Alimentos y Nutrición (ICTAN), CSIC, José Antonio Novais 10, 28040 Madrid, Spain
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Zhang X, Bilyera N, Fan L, Duddek P, Ahmed MA, Carminati A, Kaestner A, Dippold MA, Spielvogel S, Razavi BS. The spatial distribution of rhizosphere microbial activities under drought: water availability is more important than root-hair-controlled exudation. THE NEW PHYTOLOGIST 2023; 237:780-792. [PMID: 35986650 DOI: 10.1111/nph.18409] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
Root hairs and soil water content are crucial in controlling the release and diffusion of root exudates and shaping profiles of biochemical properties in the rhizosphere. But whether root hairs can offset the negative impacts of drought on microbial activity remains unknown. Soil zymography, 14 C imaging and neutron radiography were combined to identify how root hairs and soil moisture affect rhizosphere biochemical properties. To achieve this, we cultivated two maize genotypes (wild-type and root-hair-defective rth3 mutant) under ambient and drought conditions. Root hairs and optimal soil moisture increased hotspot area, rhizosphere extent and kinetic parameters (Vmax and Km ) of β-glucosidase activities. Drought enlarged the rhizosphere extent of root exudates and water content. Colocalization analysis showed that enzymatic hotspots were more colocalized with root exudate hotspots under optimal moisture, whereas they showed higher dependency on water hotspots when soil water and carbon were scarce. We conclude that root hairs are essential in adapting rhizosphere properties under drought to maintain plant nutrition when a continuous mass flow of water transporting nutrients to the root is interrupted. In the rhizosphere, soil water was more important than root exudates for hydrolytic enzyme activities under water and carbon colimitation.
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Affiliation(s)
- Xuechen Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
| | - Nataliya Bilyera
- Department of Soil and Plant Microbiome, Institute of Phytopathology, Christian-Albrechts University of Kiel, 24118, Kiel, Germany
- Department of Soil Science, Institute of Plant Nutrition and Soil Science, Christian-Albrechts University of Kiel, 24118, Kiel, Germany
- Geo-Biosphere Interactions, Department of Geosciences, University of Tuebingen, 72076, Tuebingen, Germany
| | - Lichao Fan
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
- Department of Soil Science of Temperate Ecosystems, University of Göttingen, 37077, Göttingen, Germany
| | - Patrick Duddek
- Department of Environmental Systems Science, Physics of Soils and Terrestrial Ecosystems, ETH Zürich, 8092, Zürich, Switzerland
- Division of Soil Physics, Bayreuth Center of Ecology and Environmental Research (BayCEER), University of Bayreuth, 95440, Bayreuth, Germany
| | - Mutez A Ahmed
- Division of Soil Physics, Bayreuth Center of Ecology and Environmental Research (BayCEER), University of Bayreuth, 95440, Bayreuth, Germany
- Department of Land, Air and Water Resources, University of California Davis, Davis, CA, 95616, USA
| | - Andrea Carminati
- Department of Environmental Systems Science, Physics of Soils and Terrestrial Ecosystems, ETH Zürich, 8092, Zürich, Switzerland
| | - Anders Kaestner
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, 5232, Villigen, Switzerland
| | - Michaela A Dippold
- Geo-Biosphere Interactions, Department of Geosciences, University of Tuebingen, 72076, Tuebingen, Germany
- Biogeochemistry of Agroecosystems, University of Göttingen, 37077, Göttingen, Germany
| | - Sandra Spielvogel
- Department of Soil Science, Institute of Plant Nutrition and Soil Science, Christian-Albrechts University of Kiel, 24118, Kiel, Germany
| | - Bahar S Razavi
- Department of Soil and Plant Microbiome, Institute of Phytopathology, Christian-Albrechts University of Kiel, 24118, Kiel, Germany
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Bryukhanov AL, Klimko AI, Netrusov AI. Antioxidant Properties of Lactic Acid Bacteria. Microbiology (Reading) 2022. [DOI: 10.1134/s0026261722601439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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8
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Mechanism of gastrointestinal adaptability and antioxidant function of infant-derived Lactobacillus plantarum BF_15 through genomics. Food Sci Biotechnol 2022; 31:1451-1462. [PMID: 36060571 PMCID: PMC9433590 DOI: 10.1007/s10068-022-01132-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 06/12/2022] [Accepted: 07/01/2022] [Indexed: 11/04/2022] Open
Abstract
Lactobacillus plantarum is an essential probiotic in the human gastrointestinal tract. L. plantarum BF_15, a functional probiotic isolated from the feces of breast-fed infants, has been reported in many in vitro and in vivo studies with strong gastrointestinal adaptability and outstanding anti-oxidative activities. Therefore, the whole genome of L. plantarum BF_15 was sequenced. Several genes, encoding the gastrointestinal adaptability-related proteins, were identified, including genes related to gastrointestinal environment-induced stress resistance, adhesive performance, and ability to transport and metabolize resistant starch and oligosaccharides. Genes related to alleviating oxidative stress were also found. Further functional verification was carried out by RT-qPCR on the 10 and 12 key adhesion and antioxidant genes. Overall, this study might provide a critical basis for L. plantarum BF_15 as a potential candidate for probiotics. Supplementary Information The online version contains supplementary material available at 10.1007/s10068-022-01132-w.
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Calcium Determines
Lactiplantibacillus plantarum
Intraspecies Competitive Fitness. Appl Environ Microbiol 2022; 88:e0066622. [PMID: 35852360 PMCID: PMC9361822 DOI: 10.1128/aem.00666-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The importance of individual nutrients for microbial strain robustness and coexistence in habitats containing different members of the same species is not well understood. To address this for Lactiplantibacillus plantarum in food fermentations, we performed comparative genomics and examined the nutritive requirements and competitive fitness for L. plantarum strains B1.1 and B1.3 isolated from a single sample of teff injera fermentation batter. Compared to B1.1 and other L. plantarum strains, B1.3 has a smaller genome, limited biosynthetic capacities, and large mobilome. Despite these differences, B1.3 was equally competitive with B1.1 in a suspension of teff flour. In commercially sourced, nutrient-replete MRS (cMRS) medium, strain B1.3 reached 3-fold-higher numbers than B1.1 within 2 days of passage. Because B1.3 growth and competitive fitness were poor in mMRS medium (here called mMRS), a modified MRS medium lacking beef extract, we used mMRS to identify nutrients needed for robust B1.3 growth. No improvement was observed when mMRS was supplemented with nucleotides, amino acids, vitamins, or monovalent metals. Remarkably, the addition of divalent metal salts increased the growth rate and cell yields of B1.3 in mMRS. Metal requirements were confirmed by inductively coupled plasma mass spectrometry, showing that total B1.3 intracellular metal concentrations were significantly (up to 2.7-fold) reduced compared to B1.1. Supplemental CaCl2 conferred the greatest effect, resulting in equal growth between B1.1 and B1.3 over five successive passages in mMRS. Moreover, calcium supplementation reversed a B1.3 strain-specific, stationary-phase, flocculation phenotype. These findings show how L. plantarum calcium requirements affect competitive fitness at the strain level. IMPORTANCE Ecological theory states that the struggle for existence is stronger between closely related species. Contrary to this assertion, fermented foods frequently sustain conspecific individuals, in spite of their high levels of phylogenetic relatedness. Therefore, we investigated two isolates of Lactiplantibacillus plantarum, B1.1 and B1.3, randomly selected from a single batch of teff injera batter. These strains spanned the known genomic and phenotypic range of the L. plantarum species, and in laboratory culture medium used for strain screening, B1.3 exhibited poor growth and was outcompeted by the more robust strain B1.1. Nonetheless, B1.1 and B1.3 were equally competitive in teff flour. This result shows how L. plantarum has adapted for coexistence in that environment. The capacity for the single macronutrient calcium to restore B1.3 competitive fitness in laboratory culture medium suggests that L. plantarum intraspecies diversity found in food systems is fine-tuned to nutrient requirements at the strain level.
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Fermentation in Pineapple Juice Significantly Enhances Ornithine and Citrulline Production in Lactococcus lactis MSC-3G Isolated from Sugarcane. Microorganisms 2022; 10:microorganisms10050962. [PMID: 35630406 PMCID: PMC9143541 DOI: 10.3390/microorganisms10050962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/01/2022] [Accepted: 05/02/2022] [Indexed: 12/04/2022] Open
Abstract
Lactic acid bacterial (LAB) fermentation of functional amino acids using fruit juices as a cultivation medium is not well-documented. In the present study, we successfully isolated a high ornithine- and citrulline-producing Lactococcus lactis strain, designated MSC-3G, from sugarcane and investigated the ornithine and citrulline production profile using various fruit juices as a cultivation medium. Among fruit juices, pineapple juice exhibited the highest potentiality to initiate ornithine production (56 mM), while the highest citrulline yield was obtained during lime juice cultivation (34.5 mM). Under the optimal cultivation condition, the highest yield of ornithine and citrulline in pineapple juice reached 98.9 ± 2.2 mM and 211.1 ± 35.7 mM, respectively, both of which were significantly higher than that in the well-known industrial strain of Corynebacterium (C.) glutamicum. Additionally, citrulline production was dependent on oxygen supplementation and increased twofold when grown aerobically. Whole genome sequencing showed that the MSC-3G genome possesses the arginine deiminase (ADI) gene cluster arcABD1C1C2TD2. The results of the ADI pathway enzyme activities of MSC-3G showed a significant increase in arginine deiminase activity, while ornithine carbamoyl transferase activity was decreased, which in turn indicates the high citrulline-accumulation ability of MSC-3G when cultivated in pineapple juice.
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Huynh U, Qiao M, King J, Trinh B, Valdez J, Haq M, Zastrow ML. Differential Effects of Transition Metals on Growth and Metal Uptake for Two Distinct Lactobacillus Species. Microbiol Spectr 2022; 10:e0100621. [PMID: 35080431 PMCID: PMC8791193 DOI: 10.1128/spectrum.01006-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 12/23/2021] [Indexed: 12/12/2022] Open
Abstract
Lactobacillus is a genus of Gram-positive bacteria and comprises a major part of the lactic acid bacteria group that converts sugars to lactic acid. Lactobacillus species found in the gut microbiota are considered beneficial to human health and commonly used in probiotic formulations, but their molecular functions remain poorly defined. Microbes require metal ions for growth and function and must acquire them from the surrounding environment. Therefore, lactobacilli need to compete with other gut microbes for these nutrients, although their metal requirements are not well-understood. Indeed, the abundance of lactobacilli in the microbiota is frequently affected by dietary intake of essential metals like zinc, manganese, and iron, but few studies have investigated the role of metals, especially zinc, in the physiology and metabolism of Lactobacillus species. Here, we investigated metal uptake by quantifying total cellular metal contents and compared how transition metals affect the growth of two distinct Lactobacillus species, Lactobacillus plantarum ATCC 14917 and Lactobacillus acidophilus ATCC 4356. When grown in rich or metal-limited medium, both species took up more manganese, zinc, and iron compared with other transition metals measured. Distinct zinc-, manganese- and iron-dependent patterns were observed in the growth kinetics for these species and while certain levels of each metal promoted the growth kinetics of both Lactobacillus species, the effects depend significantly on the culture medium and growth conditions. IMPORTANCE The gastrointestinal tract contains trillions of microorganisms, which are central to human health. Lactobacilli are considered beneficial microbiota members and are often used in probiotics, but their molecular functions, and especially those which are metal-dependent, remain poorly defined. Abundance of lactobacilli in the microbiota is frequently affected by dietary intake of essential metals like manganese, zinc, and iron, but results are complex, sometimes contradictory, and poorly predictable. There is a significant need to understand how host diet and metabolism will affect the microbiota, given that changes in microbiota composition are linked with disease and infection. The significance of our research is in gaining insight to how metals distinctly affect individual Lactobacillus species, which could lead to novel therapeutics and improved medical treatment. Growth kinetics and quantification of metal contents highlights how distinct species can respond differently to varied metal availability and provide a foundation for future molecular and mechanistic studies.
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Affiliation(s)
- Uyen Huynh
- Department of Chemistry, University of Houston, Houston, Texas, United States
| | - Muxin Qiao
- Department of Chemistry, University of Houston, Houston, Texas, United States
| | - John King
- Department of Chemistry, University of Houston, Houston, Texas, United States
| | - Brittany Trinh
- Department of Chemistry, University of Houston, Houston, Texas, United States
| | - Juventino Valdez
- Department of Chemistry, University of Houston, Houston, Texas, United States
| | - Marium Haq
- Department of Chemistry, University of Houston, Houston, Texas, United States
| | - Melissa L. Zastrow
- Department of Chemistry, University of Houston, Houston, Texas, United States
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Probiotic Effects and Metabolic Products of Enterococcus faecalis LD33 with Respiration Capacity. Foods 2022; 11:foods11040606. [PMID: 35206082 PMCID: PMC8871233 DOI: 10.3390/foods11040606] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 02/11/2022] [Accepted: 02/17/2022] [Indexed: 02/04/2023] Open
Abstract
Respiration metabolism could improve the long-term survival of lactic acid bacteria (LAB); however, its effect on potential probiotic traits of LAB was not reported. The difference made by Enterococcus faecalis LD33 that was cultured under respiration-permissive and fermentation conditions, such as the biomass, metabolites, antimicrobial activity, tolerance to acid and bile salt, adhesion capabilities, and the ability to inhibit the proliferation of cancer cells were studied. Under a respiration-permissive condition, the final biomass of the culture was about twice as compared to that of fermentation condition. When the metabolites were measured, glucose was exhausted within 8 h. Two-folds of acetic acid, triple of both acetoin and diacetyl, and less than half of lactic acid, were accumulated under the respiratory-permissive condition. No discrimination of growth inhibition on Salmonella enterica serovar Typhimurium ATCC 14028 and Shigella sonnei ATCC 25931 was observed when Enterococcus faecalis LD33 was cultured under both conditions; however, under respiration-permissive condition, the strain presented significant antimicrobial activities to Listeria monocytogenes ATCC19111 and Staphylococcus aureus ATCC6538P. Enterococcus faecalis LD33 displayed relatively strong bile salt tolerance and adherence capability but weaker acid tolerance when undergoing respiration metabolism. There was no significant difference in the anti-cancer effect of the viable bacterial cells on both growth modes; however, the supernatant showed a higher inhibition effect on HT-29 cells than the live bacteria, and there was no significant difference between the supernatant and the 5-Fluorouracil (7 μg/mL). Consequently, the Enterococcus faecalis LD33 undergoing respiration metabolism could bring higher biomass, more flavor metabolites, and better antimicrobial and anti-cancer activities. This study extends our knowledge of respiratory metabolism in LAB and its impact on probiotic traits. E. faecalis LD33 qualifies as a suitable strain against foodborne pathogens, cancer therapy, and eventual application in the food and pharmaceutical industries.
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Manganese Privation-Induced Transcriptional Upregulation of the Class IIa Bacteriocin Plantaricin 423 in Lactobacillus plantarum Strain 423. Appl Environ Microbiol 2021; 87:e0097621. [PMID: 34406833 DOI: 10.1128/aem.00976-21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Plantaricin 423 is produced by Lactobacillus plantarum 423 using the pla biosynthetic operon located on the 8,188-bp plasmid pPLA4. As with many class IIa bacteriocin operons, the pla operon carries biosynthetic genes (plaA, precursor peptide; plaB, immunity; plaC, accessory; and plaD, ABC transporter) but does not carry local regulatory genes. Little is known about the regulatory mechanisms involved in the expression of the apparently regulationless class IIa bacteriocins, such as plantaricin 423. In this study, phylogenetic analysis of class IIa immunity proteins indicated that at least three distinct clades exist, which were then used to subgroup the class IIa operons. It became evident that the absence of classical quorum-sensing genes on mobile bacteriocin-encoding elements is a predisposition of the subgroup that includes plantaricin 423, pediocin AcH/PA-1, divercin V41, enterocin A, leucocin-A and -B, mesentericin Y105, and sakacin G. Further analysis of the subgroup suggested that the regulation of these class IIa operons is linked to transition metal homeostasis in the host. By using a fluorescent promoter-reporter system in Lactobacillus plantarum 423, transcriptional regulation of plantaricin 423 was shown to be upregulated in response to manganese privation. IMPORTANCE Lactic acid bacteria hold huge industrial application and economic value, especially bacteriocinogenic strains, which further aids in the exclusion of specific foodborne pathogens. Since bacteriocinogenic strains are sought after, it is equally important to understand the mechanism of bacteriocin regulation. This is currently an understudied aspect of class IIa operons. Our research suggests the existence of a previously undescribed mode of class IIa bacteriocin regulation, whereby bacteriocin expression is linked to management of the producer's transition metal homeostasis. This delocalized metalloregulatory model may fundamentally affect the selection of culture conditions for bacteriocin expression and change our understanding of class IIa bacteriocin gene transfer dynamics in a given microbiome.
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Watthanasakphuban N, Virginia LJ, Haltrich D, Peterbauer C. Analysis and Reconstitution of the Menaquinone Biosynthesis Pathway in Lactiplantibacillus plantarum and Lentilactibacillus buchneri. Microorganisms 2021; 9:microorganisms9071476. [PMID: 34361912 PMCID: PMC8303990 DOI: 10.3390/microorganisms9071476] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/07/2021] [Accepted: 07/08/2021] [Indexed: 12/29/2022] Open
Abstract
In Lactococcus lactis and some other lactic acid bacteria, respiratory metabolism has been reported upon supplementation with only heme, leading to enhanced biomass formation, reduced acidification, resistance to oxygen, and improved long-term storage. Genes encoding a complete respiratory chain with all components were found in genomes of L. lactis and Leuconostoc mesenteroides, but menaquinone biosynthesis was found to be incomplete in Lactobacillaceae (except L. mesenteroides). Lactiplantibacillus plantarum has only two genes (menA, menG) encoding enzymes in the biosynthetic pathway (out of eight), and Lentilactobacillus buchneri has only four (menA, menB, menE, and menG). We constructed knock-out strains of L. lactis defective in menA, menB, menE, and menG (encoding the last steps in the pathway) and complemented these by expression of the extant genes from Lactipl. plantarum and Lent. buchneri to verify their functionality. Three of the Lactipl. plantarum biosynthesis genes, lpmenA1, lpmenG1, and lpmenG2, as well as lbmenB and lbmenG from Lent. buchneri, reconstituted menaquinone production and respiratory growth in the deficient L. lactis strains when supplemented with heme. We then reconstituted the incomplete menaquinone biosynthesis pathway in Lactipl. plantarum by expressing six genes from L. lactis homologous to the missing genes in a synthetic operon with two inducible promoters. Higher biomass formation was observed in Lactipl. plantarum carrying this operon, with an OD600 increase from 3.0 to 5.0 upon induction.
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Affiliation(s)
- Nisit Watthanasakphuban
- Department of Food Sciences and Technology, BOKU-University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria; (N.W.); (L.J.V.); (D.H.)
- Department of Biotechnology, Faculty of Agro-Industry, Kasetsart University, Chatuchak, Bangkok 10900, Thailand
| | - Ludovika Jessica Virginia
- Department of Food Sciences and Technology, BOKU-University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria; (N.W.); (L.J.V.); (D.H.)
| | - Dietmar Haltrich
- Department of Food Sciences and Technology, BOKU-University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria; (N.W.); (L.J.V.); (D.H.)
| | - Clemens Peterbauer
- Department of Food Sciences and Technology, BOKU-University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria; (N.W.); (L.J.V.); (D.H.)
- Correspondence: ; Tel.: +43-1-47654-75212
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Zhang A, Zhang Z, Zhang K, Liu X, Lin X, Zhang Z, Bao T, Feng Z. Nutrient consumption patterns of Lactobacillus plantarum and their application in suancai. Int J Food Microbiol 2021; 354:109317. [PMID: 34225032 DOI: 10.1016/j.ijfoodmicro.2021.109317] [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: 03/20/2021] [Revised: 05/31/2021] [Accepted: 06/20/2021] [Indexed: 11/25/2022]
Abstract
The purpose of the present study was to control the fermentation time and nitrite content of suancai prepared with Lactobacillus plantarum. According to analyses of the consumption amount and rate of nutrients, growth-stimulating nutrients, essential nutrients and nutrients accelerating the fermentation process of suancai, Asp, Thr, Glu, Cys, Tyr, Mg2+, Mn2+ and inosine were selected as additions to suancai prepared with L. plantarum. The fermentation time and nitrite content of suancai supplemented with nutrients and prepared with L. plantarum were shortened by 2 days and 5 days and reduced by approximately 0.1-fold and 0.7-fold, respectively, compared with unsupplemented suancai prepared with L. plantarum at 25 °C and 10 °C. The fermentation time and nitrite content of suancai supplemented with nutrients and prepared with L. plantarum were shortened by 6 days and 15 days and reduced by approximately 0.17-fold and 0.8-fold, respectively, compared with suancai undergoing spontaneous fermentation at 25 °C and 10 °C. Furthermore, no significant differences were observed in sensory properties in suancai. The results of this study indicated that certain nutrients accelerated the growth of L. plantarum and reduced the fermentation time and nitrite content of suancai prepared with L. plantarum. These findings help to establish a foundation for the practical use of nutrients to control the fermentation of suancai.
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Affiliation(s)
- Ao Zhang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, Heilongjiang, China
| | - Zongcai Zhang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, Heilongjiang, China
| | - Kenan Zhang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, Heilongjiang, China
| | - Xin Liu
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, Heilongjiang, China
| | - Xue Lin
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, Heilongjiang, China
| | - Zhen Zhang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, Heilongjiang, China
| | - Tianyu Bao
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, Heilongjiang, China
| | - Zhen Feng
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, Heilongjiang, China.
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Effect of hydrogen peroxide on the dehydrogenase and quinone-reductase activity of irradiated Lactobacillus plantarum cells. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.110236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Feng T, Wang J. Oxidative stress tolerance and antioxidant capacity of lactic acid bacteria as probiotic: a systematic review. Gut Microbes 2020; 12:1801944. [PMID: 32795116 PMCID: PMC7524341 DOI: 10.1080/19490976.2020.1801944] [Citation(s) in RCA: 182] [Impact Index Per Article: 45.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 07/15/2020] [Indexed: 02/03/2023] Open
Abstract
Lactic acid bacteria (LAB) are the most frequently used probiotics in fermented foods and beverages and as food supplements for humans or animals, owing to their multiple beneficial features, which appear to be partially associated with their antioxidant properties. LAB can help improve food quality and flavor and prevent numerous disorders caused by oxidation in the host. In this review, we discuss the oxidative stress tolerance, the antioxidant capacity related herewith, and the underlying mechanisms and signaling pathways in probiotic LAB. In addition, we discuss appropriate methods used to evaluate the antioxidant capacity of probiotic LAB. The aim of the present review is to provide an overview of the current state of the research associated with the oxidative stress tolerance and antioxidant capacity of LAB.
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Affiliation(s)
- Tao Feng
- Institute of Animal Husbandry and Veterinary Medicine (IAHVM), Beijing Academy of Agriculture and Forestry Sciences (BAAFS), Beijing, China
- Sino-US Joint Laboratory of Animal Science, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Jing Wang
- Institute of Animal Husbandry and Veterinary Medicine (IAHVM), Beijing Academy of Agriculture and Forestry Sciences (BAAFS), Beijing, China
- Sino-US Joint Laboratory of Animal Science, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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18
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Effect of manganese sulfate and vitamin B12 on the properties of physicochemical, textural, sensory and bacterial growth of set yogurt. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2020. [DOI: 10.1007/s11694-020-00720-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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19
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Zafar H, Saier MH. Comparative Genomics of the Transport Proteins of Ten Lactobacillus Strains. Genes (Basel) 2020; 11:genes11101234. [PMID: 33096690 PMCID: PMC7593918 DOI: 10.3390/genes11101234] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 10/13/2020] [Accepted: 10/16/2020] [Indexed: 12/24/2022] Open
Abstract
The genus Lactobacillus includes species that may inhabit different anatomical locations in the human body, but the greatest percentage of its species are inhabitants of the gut. Lactobacilli are well known for their probiotic characteristics, although some species may become pathogenic and exert negative effects on human health. The transportome of an organism consists of the sum of the transport proteins encoded within its genome, and studies on the transportome help in the understanding of the various physiological processes taking place in the cell. In this communication we analyze the transport proteins and predict probable substrate specificities of ten Lactobacillus strains. Six of these strains (L. brevis, L. bulgaricus, L. crispatus, L. gasseri, L. reuteri, and L. ruminis) are currently believed to be only probiotic (OP). The remaining four strains (L. acidophilus, L. paracasei, L. planatarum, and L. rhamnosus) can play dual roles, being both probiotic and pathogenic (PAP). The characteristics of the transport systems found in these bacteria were compared with strains (E. coli, Salmonella, and Bacteroides) from our previous studies. Overall, the ten lactobacilli contain high numbers of amino acid transporters, but the PAP strains contain higher number of sugar, amino acid and peptide transporters as well as drug exporters than their OP counterparts. Moreover, some of the OP strains contain pore-forming toxins and drug exporters similar to those of the PAP strains, thus indicative of yet unrecognized pathogenic potential. The transportomes of the lactobacilli seem to be finely tuned according to the extracellular and probiotic lifestyles of these organisms. Taken together, the results of this study help to reveal the physiological and pathogenic potential of common prokaryotic residents in the human body.
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Affiliation(s)
- Hassan Zafar
- Department of Molecular Biology, Division of Biological Sciences, University of California, San Diego, La Jolla, CA 92093-0116, USA
- Department of Microbiology and Molecular Genetics, Faculty of Life Sciences, University of Okara, Okara, Punjab 56300, Pakistan
- Correspondence: (H.Z.); (M.H.S.J.); Tel.: +1-858-534-4084 (M.H.S.J.); Fax: +1-858-534-7108 (M.H.S.J.)
| | - Milton H. Saier
- Department of Molecular Biology, Division of Biological Sciences, University of California, San Diego, La Jolla, CA 92093-0116, USA
- Correspondence: (H.Z.); (M.H.S.J.); Tel.: +1-858-534-4084 (M.H.S.J.); Fax: +1-858-534-7108 (M.H.S.J.)
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Zheng F, Wang T, Niu C, Zheng R, Liu C, Wang J, Li Q. Roles of Divalent-Cation Transporter Genes mntB and mntC of Beer Spoilage Bacteria in Resisting Hop Bitter Compound Iso-α-Acid. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2020. [DOI: 10.1080/03610470.2020.1814049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Feiyun Zheng
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu Province, China
- Lab of Brewing Science and Technology, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Tianmu Wang
- School of Biotechnology, Jiangnan University, Wuxi, China
| | - Chengtuo Niu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu Province, China
- Lab of Brewing Science and Technology, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Ruilong Zheng
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu Province, China
- Lab of Brewing Science and Technology, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Chunfeng Liu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu Province, China
- Lab of Brewing Science and Technology, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Jinjing Wang
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu Province, China
- Lab of Brewing Science and Technology, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Qi Li
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu Province, China
- Lab of Brewing Science and Technology, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu Province, China
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Prete R, Garcia-Gonzalez N, Di Mattia CD, Corsetti A, Battista N. Food-borne Lactiplantibacillus plantarum protect normal intestinal cells against inflammation by modulating reactive oxygen species and IL-23/IL-17 axis. Sci Rep 2020; 10:16340. [PMID: 33004903 PMCID: PMC7529774 DOI: 10.1038/s41598-020-73201-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 09/10/2020] [Indexed: 01/14/2023] Open
Abstract
Food-associated Lactiplantibacillus plantarum (Lpb. plantarum) strains, previously classified as Lactobacillus plantarum, are a promising strategy to face intestinal inflammatory diseases. Our study was aimed at clarifying the protective role of food-borne Lpb. plantarum against inflammatory damage by testing the scavenging microbial ability both in selected strains and in co-incubation with normal mucosa intestinal cells (NCM460). Here, we show that Lpb. plantarum endure high levels of induced oxidative stress through partially neutralizing reactive oxygen species (ROS), whereas they elicit their production when co-cultured with NCM460. Moreover, pre-treatment with food-borne Lpb. plantarum significantly reduce pro-inflammatory cytokines IL-17F and IL-23 levels in inflamed NCM460 cells. Our results suggest that food-vehicled Lpb. plantarum strains might reduce inflammatory response in intestinal cells by directly modulating local ROS production and by triggering the IL-23/IL-17 axis with future perspectives on health benefits in the gut derived by the consumption of functional foods enriched with selected strains.
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Affiliation(s)
- Roberta Prete
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Natalia Garcia-Gonzalez
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Carla D Di Mattia
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Aldo Corsetti
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy.
| | - Natalia Battista
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
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22
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Zhai Z, Yang Y, Wang H, Wang G, Ren F, Li Z, Hao Y. Global transcriptomic analysis of Lactobacillus plantarum CAUH2 in response to hydrogen peroxide stress. Food Microbiol 2020; 87:103389. [DOI: 10.1016/j.fm.2019.103389] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 10/27/2019] [Accepted: 11/20/2019] [Indexed: 12/25/2022]
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Maresca D, De Filippis F, Robertiello A, Mauriello G. Metabolic Profiling and Cold-Starvation Stress Response of Oxygen-Tolerant Lactobacillus gasseri Strains Cultured in Batch Bioreactor. Microorganisms 2019; 7:microorganisms7070200. [PMID: 31311070 PMCID: PMC6680863 DOI: 10.3390/microorganisms7070200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 07/08/2019] [Accepted: 07/10/2019] [Indexed: 11/16/2022] Open
Abstract
Phenotypic and genotypic evidence indicates that many LAB strains can grow in presence of oxygen and can shift from fermentative to aerobic and/or respiratory metabolism. The aerobic and respiratory growth of several LAB species have been studied, allowing the selection of strains showing improved biomass production, long-term survival, and resistance under oxygen and stress conditions. The aim of this work was to observe the adaptation of two Lactobacillus gasseri strains, described in a previous work, to aerobic (air injection) and respiratory (air injection plus hemin and menaquionone) conditions obtained in a batch bioreactor. One strain showed the higher biomass production and oxygen consumption as well as the lower acidification in respiratory condition. Instead, the other one grew better in aerobic condition, even though the higher resistance to cold-starvation stress was registered in respiratory condition. In silico analysis revealed notable differences between AL3 and AL5 genomes and that of the type strain. This work contributes to understanding the adaptation response of lactobacilli to aerobic and respiratory metabolism. We demonstrated that the supposed activation of respiratory metabolism may provide several modifications to cell physiology. These features may be relevant in some technological and health-promoting applications, including starter and probiotic formulations.
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Affiliation(s)
- Diamante Maresca
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, NA, Italy
| | - Francesca De Filippis
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, NA, Italy
| | - Alessandro Robertiello
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, NA, Italy
| | - Gianluigi Mauriello
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, NA, Italy.
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AcrR and Rex Control Mannitol and Sorbitol Utilization through Their Cross-Regulation of Aldehyde-Alcohol Dehydrogenase (AdhE) in Lactobacillus plantarum. Appl Environ Microbiol 2019; 85:AEM.02035-18. [PMID: 30530710 DOI: 10.1128/aem.02035-18] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 11/28/2018] [Indexed: 11/20/2022] Open
Abstract
Lactobacillus plantarum is a versatile bacterium that occupies a wide range of environmental niches. In this study, we found that a bifunctional aldehyde-alcohol dehydrogenase-encoding gene, adhE, was responsible for L. plantarum being able to utilize mannitol and sorbitol through cross-regulation by two DNA-binding regulators. In L. plantarum NF92, adhE was greatly induced, and the growth of an adhE-disrupted (ΔadhE) strain was repressed when sorbitol or mannitol instead of glucose was used as a carbon source. The results of enzyme activity and metabolite assays demonstrated that AdhE could catalyze the synthesis of ethanol in L. plantarum NF92 when sorbitol or mannitol was used as the carbon source. AcrR and Rex were two transcriptional factors screened by an affinity isolation method and verified to regulate the expression of adhE DNase I footprinting assay results showed that they shared a binding site (GTTCATTAATGAAC) in the adhE promoter. Overexpression and knockout of AcrR showed that AcrR was a novel regulator to promote the transcription of adhE The activator AcrR and repressor Rex may cross-regulate adhE when L. plantarum NF92 utilizes sorbitol or mannitol. Thus, a model of the control of adhE by AcrR and Rex during L. plantarum NF92 utilization of mannitol or sorbitol was proposed.IMPORTANCE The function and regulation of AdhE in the important probiotic genus Lactobacillus are rarely reported. Here we demonstrated that AdhE is responsible for sorbitol and mannitol utilization and is cross-regulated by two transcriptional regulators in L. plantarum NF92, which had not been reported previously. This is important for L. plantarum to compete and survive in some harsh environments in which sorbitol or mannitol could be used as carbon source. A novel transcriptional regulator AcrR was identified to be important to promote the expression of adhE, which was unknown before. The cross-regulation of adhE by AcrR and Rex is important to balance the level of NADH in the cell during sorbitol or mannitol utilization.
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Factors affecting gene expression and activity of heme- and manganese-dependent catalases in Lactobacillus casei strains. Int J Food Microbiol 2018; 280:66-77. [DOI: 10.1016/j.ijfoodmicro.2018.05.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 04/09/2018] [Accepted: 05/07/2018] [Indexed: 01/02/2023]
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26
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Maresca D, Zotta T, Mauriello G. Adaptation to Aerobic Environment of Lactobacillus johnsonii/gasseri Strains. Front Microbiol 2018; 9:157. [PMID: 29479342 PMCID: PMC5811513 DOI: 10.3389/fmicb.2018.00157] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 01/23/2018] [Indexed: 01/26/2023] Open
Abstract
Oxygen is considered one of the main factors affecting probiotic bacteria survival due to the induction of oxidative damages caused by the action of reactive oxygen species (ROS). It has been shown that oxidative stress resistance in lactic acid bacteria is strongly dependent on the type of cell metabolism. Shift from fermentative to respiratory metabolism (through the addition of heme and menaquinone and in presence of oxygen) was associated to increase in biomass, long-term survival, and production of antioxidant enzymes. The aim of this work was to investigate the effect of aerobic (presence of oxygen) and respiratory (presence of oxygen, heme, and menaquinone) cultivation on the growth kinetic, catalase production, oxygen uptake, and oxidative stress response of Lactobacillus johnsonii/gasseri strains previously isolated from infant feces. Seven strains showed to consume oxygen under aerobic and respiratory conditions. The strain AL5 showed a catalase activity in both growth conditions, while AL3 showed this activity only in respiratory condition. Respiratory condition improved their tolerance to oxidative compounds (hydrogen peroxide and ROS generators) and further they showed promising probiotic features. The exploration of respiratory competent phenotypes with probiotic features may be extremely useful for the development of competitive starter or probiotic cultures.
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Affiliation(s)
- Diamante Maresca
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
| | - Teresa Zotta
- Institute of Food Science, National Research Council, Avellino, Italy
| | - Gianluigi Mauriello
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
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Prasirtsak B, Thitiprasert S, Tolieng V, Assabumrungrat S, Tanasupawat S, Thongchul N. Characterization of D-lactic acid, spore-forming bacteria and Terrilactibacillus laevilacticus SK5-6 as potential industrial strains. ANN MICROBIOL 2017. [DOI: 10.1007/s13213-017-1306-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Large-Scale Phylogenomics of the Lactobacillus casei Group Highlights Taxonomic Inconsistencies and Reveals Novel Clade-Associated Features. mSystems 2017; 2:mSystems00061-17. [PMID: 28845461 PMCID: PMC5566788 DOI: 10.1128/msystems.00061-17] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 07/31/2017] [Indexed: 11/20/2022] Open
Abstract
Although the genotypic and phenotypic properties of the Lactobacillus casei group have been studied extensively, the taxonomic structure has been the subject of debate for a long time. Here, we performed a large-scale comparative analysis by using 183 publicly available genomes supplemented with a Lactobacillus strain isolated from the human upper respiratory tract. On the basis of this analysis, we identified inconsistencies in the taxonomy and reclassified all of the genomes according to their most closely related type strains. This led to the identification of a catalase-encoding gene in all 10 L. casei sensu stricto strains, making it the first described catalase-positive species in the Lactobacillus genus. Moreover, we found that 6 of 10 L. casei genomes contained a SecA2/SecY2 gene cluster with two putative glycosylated surface adhesin proteins. Altogether, our results highlight current inconsistencies in the taxonomy of the L. casei group and reveal new clade-associated functional features. IMPORTANCE The closely related species of the Lactobacillus casei group are extensively studied because of their applications in food fermentations and as probiotics. Our results show that many strains in this group are incorrectly classified and that reclassifying them to their most closely related species type strain improves the functional predictive power of their taxonomy. In addition, our findings may spark increased interest in the L. casei species. We find that after reclassification, only 10 genomes remain classified as L. casei. These strains show some interesting properties. First, they all appear to be catalase positive. This suggests that they have increased oxidative stress resistance. Second, we isolated an L. casei strain from the human upper respiratory tract and discovered that it and multiple other L. casei strains harbor one or even two large, glycosylated putative surface adhesins. This might inspire further exploration of this species as a potential probiotic organism.
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Moghaddam TK, Zhang J, Du G. UvrA expression of Lactococcus lactis NZ9000 improve multiple stresses tolerance and fermentation of lactic acid against salt stress. Journal of Food Science and Technology 2017; 54:639-649. [PMID: 28298677 DOI: 10.1007/s13197-017-2493-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 12/30/2016] [Accepted: 01/11/2017] [Indexed: 11/25/2022]
Abstract
Lactococcus lactis is subjected to several stressful conditions during industrial fermentation including oxidation, heating and cooling, acid, high osmolarity/dehydration and starvation. DNA lesion is a major cause of genetic instability in L. lactis that usually occurs at a low frequency, but it is greatly enhanced by environmental stresses. DNA damages produced by these environmental stresses are thought to induce DNA double-strand breaks, leading to illegitimate recombination. Nucleotide excision repair (NER) protein UvrA suppresses multiple stresses-induced illegitimate recombination. UvrA protein can survive a coincident condition of environmental harsh conditions, multiple stress factors supposedly encountered in the host and inducing UvrA in L. lactis. In this study the expression of UvrA and growth performance and viability of control strain L. lactisVector and recombinant strain L. lactisUvrA under multiple stress conditions were determined. The recombinants strain had 30.70 and 52.67% higher growth performances when subjected to acidic and osmotic stresses conditions. In addition, the L. lactisUvrA strain showed 1.85-, 1.65-, and 2.40-fold higher biomass, lactate production, and lactate productivity, compared with the corresponding values for L. lactisVector strain during the osmotic stress. Results demonstrated NER system is involved in adaptation to various stress conditions and suggested that cells with a compromised UvrA as DNA repair system have an enhanced protection behavior in L. lactis NZ9000 against DNA damage.
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Affiliation(s)
- Taher Khakpour Moghaddam
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122 People's Republic of China.,School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122 People's Republic of China
| | - Juan Zhang
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122 People's Republic of China.,School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122 People's Republic of China
| | - Guocheng Du
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122 People's Republic of China.,School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122 People's Republic of China
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Zotta T, Parente E, Ricciardi A. Aerobic metabolism in the genusLactobacillus: impact on stress response and potential applications in the food industry. J Appl Microbiol 2017; 122:857-869. [DOI: 10.1111/jam.13399] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 12/07/2016] [Accepted: 01/04/2017] [Indexed: 12/13/2022]
Affiliation(s)
- T. Zotta
- Istituto di Scienze dell'Alimentazione-CNR; Avellino Italy
| | - E. Parente
- Dipartimento di Scienze; Università degli Studi della Basilicata; Potenza Italy
| | - A. Ricciardi
- Scuola di Scienze Agrarie, Forestali, Alimentari e Ambientali; Università degli Studi della Basilicata; Potenza Italy
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Ianniello RG, Zotta T, Matera A, Genovese F, Parente E, Ricciardi A. Investigation of Factors Affecting Aerobic and Respiratory Growth in the Oxygen-Tolerant Strain Lactobacillus casei N87. PLoS One 2016; 11:e0164065. [PMID: 27812097 PMCID: PMC5094797 DOI: 10.1371/journal.pone.0164065] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 09/19/2016] [Indexed: 11/18/2022] Open
Abstract
Aerobic and respiratory cultivations provide benefits for some lactic acid bacteria (LAB). Growth, metabolites, enzymatic activities (lactate dehydrogenase; pyruvate and NADH oxidases, NADH peroxidase; catalase), antioxidant capability and stress tolerance of Lactobacillus casei N87 were evaluated in anaerobic, aerobic and respiratory (aerobiosis with heme and menaquinone supplementation) batch cultivations with different dissolved oxygen (DO) concentrations. The expression of pox (pyruvate oxidase) and cydABCD operon (cytochrome bd oxidase complex) was quantified by quantitative Real Time polymerase chain reaction. Respiration increased biomass production compared to anaerobiosis and unsupplemented aerobiosis, and altered the central metabolism rerouting pyruvate away from lactate accumulation. All enzymatic activities, except lactate dehydrogenase, were higher in respiratory cultures, while unsupplemented aerobiosis with 60% of DO promoted H2O2 and free radical accumulation. Respiration improved the survival to oxidative and freeze-drying stresses, while significant numbers of dead, damaged and viable but not cultivable cells were found in unsupplemented aerobic cultures (60% DO). Analysis of gene expression suggested that the activation of aerobic and respiratory pathways occurred during the exponential growth phase, and that O2 and hemin induced, respectively, the transcription of pox and cydABCD genes. Respiratory cultivation might be a natural strategy to improve functional and technological properties of L. casei.
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Affiliation(s)
- Rocco G. Ianniello
- Scuola di Scienze Agrarie, Forestali, Alimentari e Ambientali, Università degli Studi della Basilicata, Potenza, Italy
| | - Teresa Zotta
- Istituto di Scienze dell’Alimentazione-CNR, Avellino, Italy
- * E-mail:
| | - Attilio Matera
- Scuola di Scienze Agrarie, Forestali, Alimentari e Ambientali, Università degli Studi della Basilicata, Potenza, Italy
| | - Francesco Genovese
- Scuola di Scienze Agrarie, Forestali, Alimentari e Ambientali, Università degli Studi della Basilicata, Potenza, Italy
| | - Eugenio Parente
- Dipartimento di Scienze, Università degli Studi della Basilicata, Potenza, Italy
| | - Annamaria Ricciardi
- Scuola di Scienze Agrarie, Forestali, Alimentari e Ambientali, Università degli Studi della Basilicata, Potenza, Italy
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Aryani DC, den Besten HMW, Zwietering MH. Quantifying Variability in Growth and Thermal Inactivation Kinetics of Lactobacillus plantarum. Appl Environ Microbiol 2016; 82:4896-908. [PMID: 27260362 PMCID: PMC4968553 DOI: 10.1128/aem.00277-16] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 05/20/2016] [Indexed: 11/20/2022] Open
Abstract
UNLABELLED The presence and growth of spoilage organisms in food might affect the shelf life. In this study, the effects of experimental, reproduction, and strain variabilities were quantified with respect to growth and thermal inactivation using 20 Lactobacillus plantarum strains. Also, the effect of growth history on thermal resistance was quantified. The strain variability in μmax was similar (P > 0.05) to reproduction variability as a function of pH, aw, and temperature, while being around half of the reproduction variability (P < 0.05) as a function of undissociated lactic acid concentration [HLa]. The cardinal growth parameters were estimated for the L. plantarum strains, and the pHmin was between 3.2 and 3.5, the aw,min was between 0.936 and 0.953, the [HLamax], at pH 4.5, was between 29 and 38 mM, and the Tmin was between 3.4 and 8.3°C. The average D values ranged from 0.80 min to 19 min at 55°C, 0.22 to 3.9 min at 58°C, 3.1 to 45 s at 60°C, and 1.8 to 19 s at 63°C. In contrast to growth, the strain variability in thermal resistance was on average six times higher than the reproduction variability and more than ten times higher than the experimental variability. The strain variability was also 1.8 times higher (P < 0.05) than the effect of growth history. The combined effects of strain variability and growth history on D value explained all of the variability as found in the literature, although with bias. Based on an illustrative milk-processing chain, strain variability caused ∼2-log10 differences in growth between the most and least robust strains and >10-log10 differences after thermal treatment. IMPORTANCE Accurate control and realistic prediction of shelf life is complicated by the natural diversity among microbial strains, and limited information on microbiological variability is available for spoilage microorganisms. Therefore, the objectives of the present study were to quantify strain variability, reproduction (biological) variability, and experimental variability with respect to the growth and thermal inactivation kinetics of Lactobacillus plantarum and to quantify the variability in thermal resistance attributed to growth history. The quantitative knowledge obtained on experimental, reproduction, and strain variabilities can be used to improve experimental designs and to adequately select strains for challenge growth and inactivation tests. Moreover, the integration of strain variability in prediction of microbial growth and inactivation kinetics will result in more realistic predictions of L. plantarum dynamics along the food production chain.
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Affiliation(s)
- D C Aryani
- Top Institute Food and Nutrition, Wageningen, The Netherlands Laboratory of Food Microbiology, Wageningen University, Wageningen, The Netherlands
| | - H M W den Besten
- Laboratory of Food Microbiology, Wageningen University, Wageningen, The Netherlands
| | - M H Zwietering
- Top Institute Food and Nutrition, Wageningen, The Netherlands Laboratory of Food Microbiology, Wageningen University, Wageningen, The Netherlands
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Free radical formation by Lactobacillus acidophilus NCFM is enhanced by antioxidants and decreased by catalase. Food Res Int 2016. [DOI: 10.1016/j.foodres.2015.12.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Ricciardi A, Ianniello R, Parente E, Zotta T. Modified chemically defined medium for enhanced respiratory growth ofLactobacillus caseiandLactobacillus plantarumgroups. J Appl Microbiol 2015; 119:776-85. [DOI: 10.1111/jam.12894] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 05/27/2015] [Accepted: 06/20/2015] [Indexed: 11/29/2022]
Affiliation(s)
- A. Ricciardi
- Scuola di Scienze Agrarie, Forestali, Alimentari e Ambientali; Università degli Studi della Basilicata; Potenza Italy
| | - R.G. Ianniello
- Scuola di Scienze Agrarie, Forestali, Alimentari e Ambientali; Università degli Studi della Basilicata; Potenza Italy
| | - E. Parente
- Scuola di Scienze Agrarie, Forestali, Alimentari e Ambientali; Università degli Studi della Basilicata; Potenza Italy
- Istituto di Scienze dell'Alimentazione-CNR; Avellino Italy
| | - T. Zotta
- Istituto di Scienze dell'Alimentazione-CNR; Avellino Italy
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Probabilistic models to describe the effect of NaNO2 in combination with NaCl on the growth inhibition of Lactobacillus in frankfurters. Meat Sci 2015; 110:302-9. [PMID: 26410421 DOI: 10.1016/j.meatsci.2015.05.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 04/02/2015] [Accepted: 05/22/2015] [Indexed: 11/21/2022]
Abstract
Probabilistic models were developed to describe the antimicrobial effect of NaNO2 (0-210 ppm) in combination with NaCl (0-1.75%) on Lactobacillus growth under aerobic and anaerobic conditions. Growth (1) or no growth (0) was assessed every 24h as turbid or not turbid, respectively. The growth response data were analyzed by logistic regression to select significant variables (P<0.05) for Lactobacillus growth inhibition, and these variables were used to generate a probabilistic model. The model was then validated with observed data from frankfurters (a model system). NaNO2 and NaCl inhibited (P<0.05) Lactobacillus growth at all temperatures under aerobic and anaerobic conditions, and the antimicrobial effect of NaNO2 increased as the NaCl concentration increased. Validation showed that the performance of the developed model was appropriate. These results indicate that the models developed in this study should be useful for describing the antimicrobial effect of NaNO2 in combination with NaCl on Lactobacillus.
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Ianniello R, Zheng J, Zotta T, Ricciardi A, Gänzle M. Biochemical analysis of respiratory metabolism in the heterofermentativeLactobacillus spicheriandLactobacillus reuteri. J Appl Microbiol 2015; 119:763-75. [DOI: 10.1111/jam.12853] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 04/27/2015] [Accepted: 05/12/2015] [Indexed: 01/01/2023]
Affiliation(s)
- R.G. Ianniello
- Department of Agricultural, Food and Nutritional Science; University of Alberta; Edmonton AB Canada
- Scuola di Scienze Agrarie; Forestali, Alimentari e Ambientali; Università degli Studi della Basilicata; Potenza Italy
| | - J. Zheng
- State Key Laboratory of Agricultural Microbiology; Huazhong Agricultural University; Wuhan Hubei China
| | - T. Zotta
- Istituto di Scienze dell'Alimentazione-CNR; Avellino Italy
| | - A. Ricciardi
- Scuola di Scienze Agrarie; Forestali, Alimentari e Ambientali; Università degli Studi della Basilicata; Potenza Italy
| | - M.G. Gänzle
- Department of Agricultural, Food and Nutritional Science; University of Alberta; Edmonton AB Canada
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Saá Ibusquiza P, Nierop Groot M, Debán-Valles A, Abee T, den Besten HM. Impact of growth conditions and role of sigB on Listeria monocytogenes fitness in single and mixed biofilms cultured with Lactobacillus plantarum. Food Res Int 2015. [DOI: 10.1016/j.foodres.2015.03.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Lactic metabolism revisited: metabolism of lactic acid bacteria in food fermentations and food spoilage. Curr Opin Food Sci 2015. [DOI: 10.1016/j.cofs.2015.03.001] [Citation(s) in RCA: 304] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Ricciardi A, Castiglione Morelli MA, Ianniello RG, Parente E, Zotta T. Metabolic profiling and stress response of anaerobic and respiratory cultures of Lactobacillus plantarum C17 grown in a chemically defined medium. ANN MICROBIOL 2014. [DOI: 10.1007/s13213-014-1003-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Assessment of aerobic and respiratory growth in the Lactobacillus casei group. PLoS One 2014; 9:e99189. [PMID: 24918811 PMCID: PMC4053349 DOI: 10.1371/journal.pone.0099189] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Accepted: 05/12/2014] [Indexed: 11/19/2022] Open
Abstract
One hundred eighty four strains belonging to the species Lactobacillus casei, L. paracasei and L. rhamnosus were screened for their ability to grow under aerobic conditions, in media containing heme and menaquinone and/or compounds generating reactive oxygen species (ROS), in order to identify respiratory and oxygen-tolerant phenotypes. Most strains were able to cope with aerobic conditions and for many strains aerobic growth and heme or heme/menaquinone supplementation increased biomass production compared to anaerobic cultivation. Only four L. casei strains showed a catalase-like activity under anaerobic, aerobic and respiratory conditions and were able to survive in presence of H2O2 (1 mM). Almost all L. casei and L. paracasei strains tolerated menadione (0.2 mM) and most tolerated pyrogallol (50 mM), while L. rhamnosus was usually resistant only to the latter compound. This is the first study in which an extensive screening of oxygen and oxidative stress tolerance of members of the L. casei group has been carried out. Results allowed the selection of strains showing the typical traits of aerobic and respiratory metabolism (increased pH and biomass under aerobic or respiratory conditions) and unique oxidative stress response properties. Aerobic growth and respiration may confer technological and physiological advantages in the L. casei group and oxygen-tolerant phenotypes could be exploited in several food industry applications.
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Zotta T, Ianniello RG, Guidone A, Parente E, Ricciardi A. Selection of mutants tolerant of oxidative stress from respiratory cultures of Lactobacillus plantarum C17. J Appl Microbiol 2013; 116:632-43. [PMID: 24267916 DOI: 10.1111/jam.12398] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 11/04/2013] [Accepted: 11/15/2013] [Indexed: 12/20/2022]
Abstract
AIMS Lactobacillus plantarum is a lactic acid bacterium involved in the production of many fermented foods. Recently, several studies have demonstrated that aerobic or respiratory metabolism in this species leads to improved technological and stress response properties. METHODS AND RESULTS We investigated respiratory growth, metabolite production and stress resistance of Lact. plantarum C17 during batch, fed-batch and chemostat cultivations under respiratory conditions. Sixty mutants were selected for their ability to tolerate oxidative stress using H2 O2 and menadione as selective agents and further screened for their capability to growth under anaerobic, respiratory and oxidative stress conditions. Dilution rate clearly affected the physiological state of cells and, generally, slow-growing cultures had improved survival to stresses, catalase production and oxygen uptake. Most mutants were more competitive in terms of biomass production and ROS degradation compared with wild-type strain (wt) C17 and two of these (C17-m19 and C17-m58) were selected for further experiments. CONCLUSIONS This work confirms that, in Lact. plantarum, respiration and low growth rates confer physiological and metabolic advantages compared with anaerobic cultivation. SIGNIFICANCE AND IMPACT OF THE STUDY Our strategy of natural selection successfully provides a rapid and inexpensive screening for a large number of strains and represents a food-grade approach of practical relevance in the production of starter and probiotic cultures.
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Affiliation(s)
- T Zotta
- Istituto di Scienze dell'Alimentazione-CNR, Avellino, Italy
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Zotta T, Guidone A, Ianniello RG, Parente E, Ricciardi A. Temperature and respiration affect the growth and stress resistance of Lactobacillus plantarum C17. J Appl Microbiol 2013; 115:848-58. [PMID: 23782242 DOI: 10.1111/jam.12285] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Revised: 05/10/2013] [Accepted: 06/14/2013] [Indexed: 11/28/2022]
Abstract
AIMS The aim of the study is to gain further insight on the respiratory behaviour of Lactobacillus plantarum and its consequences on stress tolerance. METHODS AND RESULTS We investigated the effect of temperature and respiration on the growth and stress (heat, oxidative, freezing, freeze-drying) response of Lact. plantarum C17 during batch cultivations. Temperature as well as respiration clearly affected the physiological state of cells, and generally, cultures grown under respiratory conditions exhibited improved tolerance of some stresses (heat, oxidative, freezing) compared to those obtained in anaerobiosis. Our results revealed that the activities in cell-free extracts of the main enzymes related to aerobic metabolism, POX (pyruvate oxidase) and NPR (NADH peroxidase), were significantly affected by temperature. POX was completely inhibited at 37°C, while the activity of NPR slightly increased at 25°C, indicating that in Lact. plantarum, the temperature of growth may be involved in the activation and modulation of aerobic/respiratory metabolism. CONCLUSIONS We confirmed that respiration confers robustness to Lact. plantarum cells, allowing a greater stress tolerance and advantages in the production of starter and probiotic cultures. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first study on respiratory metabolism on a strain other than the model strains WCFS1; novel information on the role of temperature in the modulation of aerobic/respiratory metabolism in Lact. plantarum is presented.
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Affiliation(s)
- T Zotta
- Istituto di Scienze dell'Alimentazione-CNR, Avellino, Italy.
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Zhang Y, Li Y. Engineering the antioxidative properties of lactic acid bacteria for improving its robustness. Curr Opin Biotechnol 2013; 24:142-7. [DOI: 10.1016/j.copbio.2012.08.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Revised: 08/22/2012] [Accepted: 08/30/2012] [Indexed: 10/27/2022]
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Aerobic metabolism and oxidative stress tolerance in the Lactobacillus plantarum group. World J Microbiol Biotechnol 2013; 29:1713-22. [DOI: 10.1007/s11274-013-1334-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Accepted: 03/22/2013] [Indexed: 11/25/2022]
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Böhmer N, König S, Fischer L. A novel manganese starvation-inducible expression system for Lactobacillus plantarum. FEMS Microbiol Lett 2013; 342:37-44. [PMID: 23413922 DOI: 10.1111/1574-6968.12105] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 02/10/2013] [Accepted: 02/11/2013] [Indexed: 11/28/2022] Open
Abstract
A novel expression system for Lactobacillus plantarum was developed. This system is based on the manganese starvation-inducible promoter from specific manganese transporter of L. plantarum NC8, which was cloned for the first time. The expression of a β-glucosidase from Pyrococcus furiosus (CelB) was achieved by cultivating L. plantarum NC8 at low manganese concentrations with MRS medium and the pmntH2-CelB expression vector. A CelB activity of 8.52 μkatoNPGal L(-1) was produced in a bioreactor (4 L). The advantages of the novel expression system are that no addition of an external inducing agent was required, and additionally, no further introduction of regulatory genes was necessary. The new promoter meets the general demands of a food-grade expression system.
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Affiliation(s)
- Nico Böhmer
- Institute of Food Science and Biotechnology, Department of Biotechnology, University of Hohenheim, Stuttgart, Germany
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Ricciardi A, Parente E, Guidone A, Ianniello RG, Zotta T, Abu Sayem SM, Varcamonti M. Genotypic diversity of stress response in Lactobacillus plantarum, Lactobacillus paraplantarum and Lactobacillus pentosus. Int J Food Microbiol 2012; 157:278-85. [PMID: 22704047 DOI: 10.1016/j.ijfoodmicro.2012.05.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Revised: 05/16/2012] [Accepted: 05/19/2012] [Indexed: 10/28/2022]
Abstract
Lactobacillus plantarum, Lactobacillus pentosus and Lactobacillus paraplantarum are three closely related species which are widespread in food and non-food environments, and are important as starter bacteria or probiotics. In order to evaluate the phenotypic diversity of stress tolerance in the L. plantarum group and the ability to mount an adaptive heat shock response, the survival of exponential and stationary phase and of heat adapted exponential phase cells of six L. plantarum subsp. plantarum, one L. plantarum subsp. argentoratensis, one L. pentosus and two L. paraplantarum strains selected in a previous work upon exposure to oxidative, heat, detergent, starvation and acid stresses was compared to that of the L. plantarum WCFS1 strain. Furthermore, to evaluate the genotypic diversity in stress response genes, ten genes (encoding for chaperones DnaK, GroES and GroEL, regulators CtsR, HrcA and CcpA, ATPases/proteases ClpL, ClpP, ClpX and protease FtsH) were amplified using primers derived from the WCFS1 genome sequence and submitted to restriction with one or two endonucleases. The results were compared by univariate and multivariate statistical methods. In addition, the amplicons for hrcA and ctsR were sequenced and compared by multiple sequence alignment and polymorphism analysis. Although there was evidence of a generalized stress response in the stationary phase, with increase of oxidative, heat, and, to a lesser extent, starvation stress tolerance, and for adaptive heat stress response, with increased tolerance to heat, acid and detergent, different growth phases and adaptation patterns were found. Principal component analysis showed that while heat, acid and detergent stresses respond similarly to growth phase and adaptation, tolerance to oxidative and starvation stresses implies completely unrelated mechanisms. A dendrogram obtained using the data from multilocus restriction typing (MLRT) of stress response genes clearly separated two groups of L. plantarum strains from the other species but there was no correlation between genotypic grouping and grouping obtained on the basis of the stress response pattern, nor with the phylograms obtained from hrcA and ctsR sequences. Differences in sequence in L. plantarum strains were mostly due to single nucleotide polymorphisms with a high frequency of synonymous nucleotide changes and, while hrcA was characterized by an excess of low frequency polymorphism, very low diversity was found in ctsR sequences. Sequence alignment of hrcA allowed a correct discrimination of the strains at the species level, thus confirming the relevance of stress response genes for taxonomy.
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Affiliation(s)
- Annamaria Ricciardi
- Dipartimento di Biologia, Difesa e Biotecnologie Agro-Forestali, Università degli Studi della Basilicata, Potenza, Italy.
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Impact of respiration on resistance of Lactobacillus plantarum WCFS1 to acid stress. Appl Environ Microbiol 2012; 78:4062-4. [PMID: 22447603 DOI: 10.1128/aem.00287-12] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
This study shows that growth under respiration conditions has a negative impact on the survival of stationary-phase cultures of Lactobacillus plantarum WCFS1 at low pHs and that viability loss at critical values is associated with the formation of radicals and loss of membrane integrity.
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