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Li J, Hong M, Lv J, Tang R, Wang R, Yang Y, Liu N. Enhancement on migration and biodegradation of Diaphorobacter sp. LW2 mediated by Pythium ultimum in soil with different particle sizes. Front Microbiol 2024; 15:1391553. [PMID: 38841075 PMCID: PMC11150788 DOI: 10.3389/fmicb.2024.1391553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 05/02/2024] [Indexed: 06/07/2024] Open
Abstract
Introduction The composition and structure of natural soil are very complex, leading to the difficult contact between hydrophobic organic compounds and degrading-bacteria in contaminated soil, making pollutants hard to be removed from the soil. Several researches have reported the bacterial migration in unsaturated soil mediated by fungal hyphae, but bacterial movement in soil of different particle sizes or in heterogeneous soil was unclear. The remediation of contaminated soil enhanced by hyphae still needs further research. Methods In this case, the migration and biodegradation of Diaphorobacter sp. LW2 in soil was investigated in presence of Pythium ultimum. Results Hyphae could promote the growth and migration of LW2 in culture medium. It was also confirmed that LW2 was able to migrate in the growth direction and against the growth direction along hyphae. Mediated by hyphae, motile strain LW2 translocated over 3 cm in soil with different particle size (CS1, 1.0-2.0 mm; CS2, 0.5-1.0mm; MS, 0.25-0.5 mm and FS, <0.25 mm), and it need shorter time in bigger particle soils. In inhomogeneous soil, hyphae participated in the distribution of introduced bacteria, and the total number of bacteria increased. Pythium ultimum enhanced the migration and survival of LW2 in soil, improving the bioremediation of polluted soil. Discussion The results of this study indicate that the mobilization of degrading bacteria mediated by Pythium ultimum in soil has great potential for application in bioremediation of contaminated soil.
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Affiliation(s)
- Jialu Li
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, College of New Energy and Environment, Jilin University, Changchun, China
- National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, China
| | - Mei Hong
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, College of New Energy and Environment, Jilin University, Changchun, China
- National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, China
| | - Jing Lv
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, College of New Energy and Environment, Jilin University, Changchun, China
- National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, China
| | - Rui Tang
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, College of New Energy and Environment, Jilin University, Changchun, China
- National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, China
| | - Ruofan Wang
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, College of New Energy and Environment, Jilin University, Changchun, China
- National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, China
| | - Yadong Yang
- School of Environmental Science and Engineering, Jiangsu Engineering Research Center of Biomass Waste Pyrolytic Carbonization & Application, Yancheng Institute of Technology, Yancheng, China
| | - Na Liu
- Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou, Guangdong, China
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Uroz S, Geisler O, Fauchery L, Lami R, Rodrigues AMS, Morin E, Leveau JHJ, Oger P. Genomic and transcriptomic characterization of the Collimonas quorum sensing genes and regulon. FEMS Microbiol Ecol 2022; 98:6679101. [PMID: 36040340 DOI: 10.1093/femsec/fiac100] [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: 05/22/2022] [Revised: 07/13/2022] [Accepted: 08/26/2022] [Indexed: 01/21/2023] Open
Abstract
Collimonads are well-adapted to nutrient-poor environments. They are known to hydrolyse chitin, produce antifungal metabolites, weather minerals, and are effective biocontrol agents protecting plants from fungal diseases. The production of N-acyl homoserine lactones (AHLs) was suggested to be a conserved trait of collimonads, but little is known about the genes that underlie this production or the genes that are controlled by AHLs. To improve our understanding of the role of AHLs in the ecology of collimonads, we carried out transcriptomic analyses, combined with chemical and functional assays, on strain Collimonas pratensis PMB3(1). The main AHLs produced by this strain were identified as 3-hydroxy-hexa- and octa-noyl-homoserine lactone. Genome analysis permitted to identify putative genes coding for the autoinducer synthase (colI) and cognate transcriptional regulator (colR). The ability to produce AHLs was lost in ΔcolI and ΔcolR mutants. Functional assays revealed that the two mutants metabolized glucose, formate, oxalate, and leucine better than the wild-type (WT) strain. Transcriptome sequencing analyses revealed an up-regulation of different metabolic pathways and of motility in the QS-mutants compared to the WT strain. Overall, our results provide insights into the role of the AHL-dependent regulation system of Collimonas in environment colonization, metabolism readjustment, and microbial interactions.
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Affiliation(s)
- Stephane Uroz
- Université de Lorraine, INRAE, UMR1136 "Interactions Arbres-Microorganismes", F-54280 Champenoux, France.,INRAE, UR1138 "Biogéochimie des écosystèmes forestiers", F-54280 Champenoux, France
| | - Océane Geisler
- Université de Lorraine, INRAE, UMR1136 "Interactions Arbres-Microorganismes", F-54280 Champenoux, France
| | - Laure Fauchery
- Université de Lorraine, INRAE, UMR1136 "Interactions Arbres-Microorganismes", F-54280 Champenoux, France
| | - Raphaël Lami
- Sorbonne Université, CNRS, Laboratoire de Biodiversité et Biotechnologies Microbiennes (LBBM, USR3579), Fédération de Recherche FR3724, Observatoire Océanologique, 66650 Banyuls-sur-Mer, France
| | - Alice M S Rodrigues
- Sorbonne Université, CNRS, Laboratoire de Biodiversité et Biotechnologies Microbiennes (LBBM, USR3579), Fédération de Recherche FR3724, Observatoire Océanologique, 66650 Banyuls-sur-Mer, France
| | - Emmanuelle Morin
- Université de Lorraine, INRAE, UMR1136 "Interactions Arbres-Microorganismes", F-54280 Champenoux, France
| | - Johan H J Leveau
- Department of Plant Pathology, University of California - Davis, Davis, CA 95616, United States
| | - Philippe Oger
- Université Lyon, INSA de Lyon, CNRS UMR 5240, F-69622 Villeurbanne, France
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Varliero G, Anesio AM, Barker GLA. A Taxon-Wise Insight Into Rock Weathering and Nitrogen Fixation Functional Profiles of Proglacial Systems. Front Microbiol 2021; 12:627437. [PMID: 34621246 PMCID: PMC8491546 DOI: 10.3389/fmicb.2021.627437] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 08/05/2021] [Indexed: 11/13/2022] Open
Abstract
The Arctic environment is particularly affected by global warming, and a clear trend of the ice retreat is observed worldwide. In proglacial systems, the newly exposed terrain represents different environmental and nutrient conditions compared to later soil stages. Therefore, proglacial systems show several environmental gradients along the soil succession where microorganisms are active protagonists of the soil and carbon pool formation through nitrogen fixation and rock weathering. We studied the microbial succession of three Arctic proglacial systems located in Svalbard (Midtre Lovénbreen), Sweden (Storglaciären), and Greenland (foreland close to Kangerlussuaq). We analyzed 65 whole shotgun metagenomic soil samples for a total of more than 400 Gb of sequencing data. Microbial succession showed common trends typical of proglacial systems with increasing diversity observed along the forefield chronosequence. Microbial trends were explained by the distance from the ice edge in the Midtre Lovénbreen and Storglaciären forefields and by total nitrogen (TN) and total organic carbon (TOC) in the Greenland proglacial system. Furthermore, we focused specifically on genes associated with nitrogen fixation and biotic rock weathering processes, such as nitrogenase genes, obcA genes, and genes involved in cyanide and siderophore synthesis and transport. Whereas we confirmed the presence of these genes in known nitrogen-fixing and/or rock weathering organisms (e.g., Nostoc, Burkholderia), in this study, we also detected organisms that, even if often found in soil and proglacial systems, have never been related to nitrogen-fixing or rock weathering processes before (e.g., Fimbriiglobus, Streptomyces). The different genera showed different gene trends within and among the studied systems, indicating a community constituted by a plurality of organisms involved in nitrogen fixation and biotic rock weathering, and where the latter were driven by different organisms at different soil succession stages.
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Affiliation(s)
- Gilda Varliero
- School of Biological Sciences, University of Bristol, Bristol, United Kingdom
| | | | - Gary L. A. Barker
- School of Biological Sciences, University of Bristol, Bristol, United Kingdom
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Sharma S, Compant S, Franken P, Ruppel S, Ballhausen MB. It Takes Two to Tango: A Bacterial Biofilm Provides Protection against a Fungus-Feeding Bacterial Predator. Microorganisms 2021; 9:microorganisms9081566. [PMID: 34442645 PMCID: PMC8398733 DOI: 10.3390/microorganisms9081566] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 07/15/2021] [Accepted: 07/17/2021] [Indexed: 11/23/2022] Open
Abstract
Fungus-bacterium interactions are widespread, encompass multiple interaction types from mutualism to parasitism, and have been frequent targets for microbial inoculant development. In this study, using in vitro systems combined with confocal laser scanning microscopy and real-time quantitative PCR, we test whether the nitrogen-fixing bacterium Kosakonia radicincitans can provide protection to the plant-beneficial fungus Serendipita indica, which inhabits the rhizosphere and colonizes plants as an endophyte, from the fungus-feeding bacterium Collimonas fungivorans. We show that K. radicincitans can protect fungal hyphae from bacterial feeding on solid agar medium, with probable mechanisms being quick hyphal colonization and biofilm formation. We furthermore find evidence for different feeding modes of K. radicincitans and C. fungivorans, namely “metabolite” and “hyphal feeding”, respectively. Overall, we demonstrate, to our knowledge, the first evidence for a bacterial, biofilm-based protection of fungal hyphae against attack by a fungus-feeding, bacterial predator on solid agar medium. Besides highlighting the importance of tripartite microbial interactions, we discuss implications of our results for the development and application of microbial consortium-based bioprotectants and biostimulants.
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Affiliation(s)
- Shubhangi Sharma
- Leibniz Institute of Vegetable and Ornamental Crops, Theodor-Echtermeyer-Weg 1, 14979 Großbeeren, Germany; (S.S.); (P.F.); (S.R.)
| | - Stéphane Compant
- AIT Austrian Institute of Technology, Center for Health and Bioresources, Konrad Lorenz Strasse 24, 3430 Tulln, Austria;
| | - Philipp Franken
- Leibniz Institute of Vegetable and Ornamental Crops, Theodor-Echtermeyer-Weg 1, 14979 Großbeeren, Germany; (S.S.); (P.F.); (S.R.)
- Institute of Microbiology, Friedrich Schiller University Jena, Neugasse 24, 07743 Jena, Germany
| | - Silke Ruppel
- Leibniz Institute of Vegetable and Ornamental Crops, Theodor-Echtermeyer-Weg 1, 14979 Großbeeren, Germany; (S.S.); (P.F.); (S.R.)
| | - Max-Bernhard Ballhausen
- Leibniz Institute of Vegetable and Ornamental Crops, Theodor-Echtermeyer-Weg 1, 14979 Großbeeren, Germany; (S.S.); (P.F.); (S.R.)
- Correspondence:
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Genome-Wide Metabolic Reconstruction of the Synthesis of Polyhydroxyalkanoates from Sugars and Fatty Acids by Burkholderia Sensu Lato Species. Microorganisms 2021; 9:microorganisms9061290. [PMID: 34204835 PMCID: PMC8231600 DOI: 10.3390/microorganisms9061290] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 12/13/2022] Open
Abstract
Burkholderia sensu lato (s.l.) species have a versatile metabolism. The aims of this review are the genomic reconstruction of the metabolic pathways involved in the synthesis of polyhydroxyalkanoates (PHAs) by Burkholderia s.l. genera, and the characterization of the PHA synthases and the pha genes organization. The reports of the PHA synthesis from different substrates by Burkholderia s.l. strains were reviewed. Genome-guided metabolic reconstruction involving the conversion of sugars and fatty acids into PHAs by 37 Burkholderia s.l. species was performed. Sugars are metabolized via the Entner-Doudoroff (ED), pentose-phosphate (PP), and lower Embden-Meyerhoff-Parnas (EMP) pathways, which produce reducing power through NAD(P)H synthesis and PHA precursors. Fatty acid substrates are metabolized via β-oxidation and de novo synthesis of fatty acids into PHAs. The analysis of 194 Burkholderia s.l. genomes revealed that all strains have the phaC, phaA, and phaB genes for PHA synthesis, wherein the phaC gene is generally present in ≥2 copies. PHA synthases were classified into four phylogenetic groups belonging to class I II and III PHA synthases and one outlier group. The reconstruction of PHAs synthesis revealed a high level of gene redundancy probably reflecting complex regulatory layers that provide fine tuning according to diverse substrates and physiological conditions.
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Pratama AA, van Elsas JD. Gene mobility in microbiomes of the mycosphere and mycorrhizosphere -role of plasmids and bacteriophages. FEMS Microbiol Ecol 2020; 95:5454738. [PMID: 30980672 DOI: 10.1093/femsec/fiz053] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 04/12/2019] [Indexed: 12/22/2022] Open
Abstract
Microbial activity in soil, including horizontal gene transfer (HGT), occurs in soil hot spots and at "hot moments". Given their capacities to explore soil for nutrients, soil fungi (associated or not with plant roots) can act as (1) selectors of myco(rrhizo)sphere-adapted organisms and (2) accelerators of HGT processes across the cell populations that are locally present. This minireview critically examines our current understanding of the drivers of gene mobility in the myco(rrhizo)sphere. We place a special focus on the role of two major groups of gene mobility agents, i.e. plasmids and bacteriophages. With respect to plasmids, there is mounting evidence that broad-host-range (IncP-1β and PromA group) plasmids are prominent drivers of gene mobility across mycosphere inhabitants. A role of IncP-1β plasmids in Fe uptake processes has been revealed. Moreover, a screening of typical mycosphere-inhabiting Paraburkholderia spp. revealed carriage of integrated plasmids, next to prophages, that presumably confer fitness enhancements. In particular, functions involved in biofilm formation and nutrient uptake were thus identified. The potential of the respective gene mobility agents to promote the movement of such genes is critically examined.
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Affiliation(s)
- Akbar Adjie Pratama
- Department of Microbial Ecology - Groningen Institute for Evolutionary Life Sciences, University of Groningen, Nijenborgh 7, 9747 AG Groningen, The Netherlands
| | - Jan Dirk van Elsas
- Department of Microbial Ecology - Groningen Institute for Evolutionary Life Sciences, University of Groningen, Nijenborgh 7, 9747 AG Groningen, The Netherlands
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Pratama AA, Jiménez DJ, Chen Q, Bunk B, Spröer C, Overmann J, van Elsas JD. Delineation of a Subgroup of the Genus Paraburkholderia, Including P. terrae DSM 17804T, P. hospita DSM 17164T, and Four Soil-Isolated Fungiphiles, Reveals Remarkable Genomic and Ecological Features-Proposal for the Definition of a P. hospita Species Cluster. Genome Biol Evol 2020; 12:325-344. [PMID: 32068849 PMCID: PMC7186790 DOI: 10.1093/gbe/evaa031] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2020] [Indexed: 12/24/2022] Open
Abstract
The fungal-interactive (fungiphilic) strains BS001, BS007, BS110, and BS437 have previously been preliminarily assigned to the species Paraburkholderia terrae. However, in the (novel) genus Paraburkholderia, an as-yet unresolved subgroup exists, that clusters around Paraburkholderia hospita (containing the species P. terrae, P. hospita, and Paraburkholderia caribensis). To shed light on the precise relationships across the respective type strains and the novel fungiphiles, we here compare their genomic and ecophysiological features. To reach this goal, the genomes of the three type strains, with sizes ranging from 9.0 to 11.5 Mb, were de novo sequenced and the high-quality genomes analyzed. Using whole-genome, ribosomal RNA and marker-gene-concatenate analyses, close relationships between P. hospita DSM 17164T and P. terrae DSM 17804T, versus more remote relationships to P. caribensis DSM 13236T, were found. All four fungiphilic strains clustered closely to the two-species cluster. Analyses of average nucleotide identities (ANIm) and tetranucleotide frequencies (TETRA) confirmed the close relationships between P. hospita DSM 17164T and P. terrae DSM 17804T (ANIm = 95.42; TETRA = 0.99784), as compared with the similarities of each one of these strains to P. caribensis DSM 13236T. A species cluster was thus proposed. Furthermore, high similarities of the fungiphilic strains BS001, BS007, BS110, and BS437 with this cluster were found, indicating that these strains also make part of it, being closely linked to P. hospita DSM 17164T (ANIm = 99%; TETRA = 0.99). We propose to coin this cluster the P. hospita species cluster (containing P. hospita DSM 17164T, P. terrae DSM 17804T, and strains BS001, BS007, BS110, and BS437), being clearly divergent from the closely related species P. caribensis (type strain DSM 13236T). Moreover, given their close relatedness to P. hospita DSM 17164T within the cluster, we propose to rename the four fungiphilic strains as members of P. hospita. Analysis of migratory behavior along with fungal growth through soil revealed both P. terrae DSM 17804T and P. hospita DSM 17164T (next to the four fungiphilic strains) to be migration-proficient, whereas P. caribensis DSM 13236T was a relatively poor migrator. Examination of predicted functions across the genomes of the seven investigated strains, next to several selected additional ones, revealed the common presence of features in the P. hospita cluster strains that are potentially important in interactions with soil fungi. Thus, genes encoding specific metabolic functions, biofilm formation (pelABCDEFG, pgaABCD, alginate-related genes), motility/chemotaxis, type-4 pili, and diverse secretion systems were found.
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Affiliation(s)
- Akbar Adjie Pratama
- Department of Microbial Ecology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, The Netherlands
| | - Diego Javier Jiménez
- Microbiomes and Bioenergy Research Group, Department of Biological Sciences, Universidad de los Andes, Bogotá, Colombia
| | - Qian Chen
- Department of Microbial Ecology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, The Netherlands
| | - Boyke Bunk
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Cathrin Spröer
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Jörg Overmann
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
- Department of Microbiology, Braunschweig University of Technology, Germany
| | - Jan Dirk van Elsas
- Department of Microbial Ecology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, The Netherlands
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Liu X, Zhang K, Liu Y, Xie Z, Zhang C. Oxalic Acid From Sesbania rostrata Seed Exudates Mediates the Chemotactic Response of Azorhizobium caulinodans ORS571 Using Multiple Strategies. Front Microbiol 2019; 10:2727. [PMID: 31849879 PMCID: PMC6901664 DOI: 10.3389/fmicb.2019.02727] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 11/08/2019] [Indexed: 12/14/2022] Open
Abstract
Chemotaxis toward seed exudates is important in the establishment of microbe-plant associations. The objective of this work was to explore whether organic acids from the seed exudates of Sesbania rostrata play a role in recruiting Azorhizobium caulinodans ORS571 in the plant rhizosphere. High-performance liquid chromatography (HPLC) was used to analyze the organic acid content in seed exudates of S. rostrata and to further determine their roles in A. caulinodans growth and chemotactic response. Succinic, acetic, citric, oxalic, and lactic acids were the most abundant, and, except for oxalic acid, they could support A. caulinodans growth as the sole carbon source. TlpA1, a transmembrane chemoreceptor, was found to be involved in the chemotactic response to these organic acids. Oxalic acid played a direct role in the chemotactic response, but it also played an indirect role by promoting or inhibiting the chemotactic response toward other chemoeffectors. Furthermore, the indirect role of oxalic acid on other chemoeffectors was concentration-dependent. The effect of oxalic acid at different concentrations on host root colonization was also determined. By using different strategies, oxalic acid appears to play a major role in the early steps of the association of A. caulinodans and its host plant.
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Affiliation(s)
- Xiaolin Liu
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Kaiye Zhang
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- College of Agriculture, Shanxi Agricultural University, Taigu, China
| | - Yanan Liu
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Zhihong Xie
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Chengsheng Zhang
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
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Palmieri F, Estoppey A, House GL, Lohberger A, Bindschedler S, Chain PSG, Junier P. Oxalic acid, a molecule at the crossroads of bacterial-fungal interactions. ADVANCES IN APPLIED MICROBIOLOGY 2018; 106:49-77. [PMID: 30798804 DOI: 10.1016/bs.aambs.2018.10.001] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Oxalic acid is the most ubiquitous and common low molecular weight organic acid produced by living organisms. Oxalic acid is produced by fungi, bacteria, plants, and animals. The aim of this review is to give an overview of current knowledge about the microbial cycling of oxalic acid through ecosystems. Here we review the production and degradation of oxalic acid, as well as its implications in the metabolism for fungi, bacteria, plants, and animals. Indeed, fungi are well known producers of oxalic acid, while bacteria are considered oxalic acid consumers. However, this framework may need to be modified, because the ability of fungi to degrade oxalic acid and the ability of bacteria to produce it, have been poorly investigated. Finally, we will highlight the role of fungi and bacteria in oxalic acid cycling in soil, plant and animal ecosystems.
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Affiliation(s)
- Fabio Palmieri
- Laboratory of Microbiology, Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland
| | - Aislinn Estoppey
- Laboratory of Microbiology, Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland
| | - Geoffrey L House
- Bioscience Division, Los Alamos National Laboratory, Los Alamos, NM, United States
| | - Andrea Lohberger
- Laboratory of Microbiology, Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland
| | - Saskia Bindschedler
- Laboratory of Microbiology, Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland
| | - Patrick S G Chain
- Bioscience Division, Los Alamos National Laboratory, Los Alamos, NM, United States
| | - Pilar Junier
- Laboratory of Microbiology, Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland.
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