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Felestrino ÉB, Sanchez AB, Caneschi WL, Lemes CGDC, Assis RDAB, Cordeiro IF, Fonseca NP, Villa MM, Vieira IT, Kamino LHY, do Carmo FF, da Silva AM, Thomas AM, Patané JSL, Ferreira FC, de Freitas LG, Varani ADM, Ferro JA, Silva RS, Almeida NF, Garcia CCM, Setubal JC, Moreira LM. Complete genome sequence and analysis of Alcaligenes faecalis strain Mc250, a new potential plant bioinoculant. PLoS One 2020; 15:e0241546. [PMID: 33151992 PMCID: PMC7643998 DOI: 10.1371/journal.pone.0241546] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 10/16/2020] [Indexed: 11/19/2022] Open
Abstract
Here we present and analyze the complete genome of Alcaligenes faecalis strain Mc250 (Mc250), a bacterium isolated from the roots of Mimosa calodendron, an endemic plant growing in ferruginous rupestrian grasslands in Minas Gerais State, Brazil. The genome has 4,159,911 bp and 3,719 predicted protein-coding genes, in a single chromosome. Comparison of the Mc250 genome with 36 other Alcaligenes faecalis genomes revealed that there is considerable gene content variation among these strains, with the core genome representing only 39% of the protein-coding gene repertoire of Mc250. Mc250 encodes a complete denitrification pathway, a network of pathways associated with phenolic compounds degradation, and genes associated with HCN and siderophores synthesis; we also found a repertoire of genes associated with metal internalization and metabolism, sulfate/sulfonate and cysteine metabolism, oxidative stress and DNA repair. These findings reveal the genomic basis for the adaptation of this bacterium to the harsh environmental conditions from where it was isolated. Gene clusters associated with ectoine, terpene, resorcinol, and emulsan biosynthesis that can confer some competitive advantage were also found. Experimental results showed that Mc250 was able to reduce (~60%) the virulence phenotype of the plant pathogen Xanthomonas citri subsp. citri when co-inoculated in Citrus sinensis, and was able to eradicate 98% of juveniles and stabilize the hatching rate of eggs to 4% in two species of agricultural nematodes. These results reveal biotechnological potential for the Mc250 strain and warrant its further investigation as a biocontrol and plant growth-promoting bacterium.
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Affiliation(s)
- Érica Barbosa Felestrino
- Núcleo de Pesquisas em Ciências Biológicas (NUPEB), Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Angélica Bianchini Sanchez
- Núcleo de Pesquisas em Ciências Biológicas (NUPEB), Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Washington Luiz Caneschi
- Núcleo de Pesquisas em Ciências Biológicas (NUPEB), Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | | | | | - Isabella Ferreira Cordeiro
- Núcleo de Pesquisas em Ciências Biológicas (NUPEB), Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Natasha Peixoto Fonseca
- Núcleo de Pesquisas em Ciências Biológicas (NUPEB), Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Morghana Marina Villa
- Departamento de Ciências Biológicas (DECBI), Instituto de Ciências Exatas e Biológicas (ICEB), Universidade Federal de Ouro Preto (UFOP), Ouro Preto, MG, Brazil
| | - Izadora Tabuso Vieira
- Departamento de Ciências Biológicas (DECBI), Instituto de Ciências Exatas e Biológicas (ICEB), Universidade Federal de Ouro Preto (UFOP), Ouro Preto, MG, Brazil
| | | | | | - Aline Maria da Silva
- Departamento de Bioquímica (DBQ), Instituto de Química (IQ), Universidade de São Paulo (USP), São Paulo, SP, Brazil
| | - Andrew Maltez Thomas
- Departamento de Bioquímica (DBQ), Instituto de Química (IQ), Universidade de São Paulo (USP), São Paulo, SP, Brazil
| | | | - Fernanda Carla Ferreira
- Instituto de Biotecnologia Aplicada a Agropecuária (BIOAGRO), Universidade Federal de Viçosa (UFV), Viçosa, MG, Brazil
| | - Leandro Grassi de Freitas
- Instituto de Biotecnologia Aplicada a Agropecuária (BIOAGRO), Universidade Federal de Viçosa (UFV), Viçosa, MG, Brazil
| | - Alessandro de Mello Varani
- Departamento de Tecnologia, Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal (FCAV), Universidade Estadual Paulista (UNESP), São Paulo, SP, Brazil
| | - Jesus Aparecido Ferro
- Departamento de Tecnologia, Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal (FCAV), Universidade Estadual Paulista (UNESP), São Paulo, SP, Brazil
| | - Robson Soares Silva
- Faculdade de Computação (FACOM), Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil
| | - Nalvo Franco Almeida
- Faculdade de Computação (FACOM), Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil
| | - Camila Carrião Machado Garcia
- Núcleo de Pesquisas em Ciências Biológicas (NUPEB), Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
- Departamento de Ciências Biológicas (DECBI), Instituto de Ciências Exatas e Biológicas (ICEB), Universidade Federal de Ouro Preto (UFOP), Ouro Preto, MG, Brazil
| | - João Carlos Setubal
- Departamento de Bioquímica (DBQ), Instituto de Química (IQ), Universidade de São Paulo (USP), São Paulo, SP, Brazil
- * E-mail: (JCS); (LMM)
| | - Leandro Marcio Moreira
- Núcleo de Pesquisas em Ciências Biológicas (NUPEB), Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
- Departamento de Ciências Biológicas (DECBI), Instituto de Ciências Exatas e Biológicas (ICEB), Universidade Federal de Ouro Preto (UFOP), Ouro Preto, MG, Brazil
- * E-mail: (JCS); (LMM)
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Nunes DAD, Salgado AM, Gama-Rodrigues EFD, Taketani RG, Cunha CDD, Sérvulo EFC. Use of plant materials for the bioremediation of soil from an industrial site. J Environ Sci Health A Tox Hazard Subst Environ Eng 2020; 55:650-660. [PMID: 32067565 DOI: 10.1080/10934529.2020.1726695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 01/24/2020] [Accepted: 01/28/2020] [Indexed: 06/10/2023]
Abstract
Bioremediation is one of the existing techniques applied for treating oil-contaminated soil, which can be improved by the incorporation of low-cost nutritional materials. This study aimed to assess the addition of two low-cost plant residues, sugarcane bagasse (SCB) and leaf litter (LL) of the forest leguminous Mimosa caesalpiniifolia plant (sabiá), either separately or combined, to a contaminated soil from a petroleum refinery area, analyzed after 90 days of treatment. Individually, both amounts of SCB (20 and 40 g kg-1) favored the growth of total heterotrophic bacteria and total fungi, while LL at 20 g kg-1 better stimulated the hydrocarbon-degrading microorganism's activity in the soil. However, no TPH removal was observed under any of these conditions. Higher microbial growth was detected by the application of both plant residues in multicontaminated soil. The maximum TPH removal of 30% was achieved in amended soil with 20 g kg-1 SCB and 20 kg-1 LL. All the experimental conditions revealed changes in the microbial community structure, related to the handling of the soil, with abundance of Alphaproteobacteria. This study demonstrates the effectiveness of the plant residues SCB and LL as low-cost nutritional materials for biodegradation of hydrocarbon in real oil contaminated soil by indigenous populations.
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Affiliation(s)
| | - Andrea Medeiros Salgado
- School of Chemistry, Centro de Tecnologia Bloco E, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Rodrigo Gouvêa Taketani
- Department of Soil Sciences, "Luiz de Queiroz" College of Agriculture, University of São Paulo, Piracicaba, SP, Brazil
- Laboratory of Environmental Microbiology, Embrapa Environment, Jaguariúna, SP, Brazil
| | - Cláudia Duarte da Cunha
- MCTIC Ministry of Science, Technology, Innovation and Communication, CETEM, Centre for Mineral Technology, Rio de Janeiro, Brazil
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Daubech B, Poinsot V, Klonowska A, Capela D, Chaintreuil C, Moulin L, Marchetti M, Masson-Boivin C. noeM, a New Nodulation Gene Involved in the Biosynthesis of Nod Factors with an Open-Chain Oxidized Terminal Residue and in the Symbiosis with Mimosa pudica. Mol Plant Microbe Interact 2019; 32:1635-1648. [PMID: 31617792 DOI: 10.1094/mpmi-06-19-0168-r] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The β-rhizobium Cupriavidus taiwanensis is a nitrogen-fixing symbiont of Mimosa pudica. Nod factors produced by this species were previously found to be pentameric chitin-oligomers carrying common C18:1 or C16:0 fatty acyl chains, N-methylated and C-6 carbamoylated on the nonreducing terminal N-acetylglucosamine and sulfated on the reducing terminal residue. Here, we report that, in addition, C. taiwanensis LMG19424 produces molecules where the reducing sugar is open and oxidized. We identified a novel nodulation gene located on the symbiotic plasmid pRalta, called noeM, which is involved in this atypical Nod factor structure. noeM encodes a transmembrane protein bearing a fatty acid hydroxylase domain. This gene is expressed during symbiosis with M. pudica and requires NodD and luteolin for optimal expression. The closest noeM homologs formed a separate phylogenetic clade containing rhizobial genes only, which are located on symbiosis plasmids downstream from a nod box. Corresponding proteins, referred to as NoeM, may have specialized in symbiosis via the connection to the nodulation pathway and the spread in rhizobia. noeM was mostly found in isolates of the Mimoseae tribe, and specifically detected in all tested strains able to nodulate M. pudica. A noeM deletion mutant of C. taiwanensis was affected for the nodulation of M. pudica, confirming the role of noeM in the symbiosis with this legume.
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Affiliation(s)
- Benoit Daubech
- LIPM, Université de Toulouse, INRA, CNRS, Castanet-Tolosan, France
| | - Verena Poinsot
- Université de Toulouse 3, UPS CNRS 5623, UMR, Lab IMRCP, F-31062 Toulouse, France
| | | | - Delphine Capela
- LIPM, Université de Toulouse, INRA, CNRS, Castanet-Tolosan, France
| | - Clémence Chaintreuil
- Université Montpellier, CIRAD, INRA, IRD, Montpellier SupAgro, LSTM, Montpellier, France
| | - Lionel Moulin
- IRD, CIRAD, Université Montpellier, IPME, Montpellier, France
| | - Marta Marchetti
- LIPM, Université de Toulouse, INRA, CNRS, Castanet-Tolosan, France
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Sortibrán L, Verdú M, Valiente-Banuet A. A nurse plant benefits from facilitative interactions through mycorrhizae. Plant Biol (Stuttg) 2019; 21:670-676. [PMID: 30537030 DOI: 10.1111/plb.12948] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 12/03/2018] [Indexed: 06/09/2023]
Abstract
Plant facilitation promotes coexistence by maintaining differences in the regeneration niche because some nurse species recruit under arid conditions, whereas facilitated species recruit under more mesic conditions. In one Mexican community, 95% of species recruit through facilitation; Mimosa luisana being a keystone nurse for many of them. M. luisana individuals manifest greater fitness when growing in association with their facilitated plants than when growing in isolation. This observation suggests that nurses also benefit from their facilitated plants, a benefit thought to be mediated by mycorrhizal fungi. Under field conditions, we experimentally tested whether mycorrhizal fungi mediate the increased fitness that M. luisana experiences when growing in association with its facilitated plants. We applied fungicide to the soil for nurse plants growing alone and growing in association with their facilitated plants in order to reduce the mycorrhizal colonisation of roots. We then assessed the quantity and quality of seed production of M. luisana in four treatments (isolated-control, isolated-fungicide, associated-control and associated-fungicide). Fungicide application reduced the percentage root length colonised by mycorrhizae and reduced fitness of M. luisana when growing in association with their facilitated plants but not when growing in isolation. This reduction was reflected in the total number of seeds, number of seeds per pod, seed mass and seed viability. These results suggest that nurses benefit from the presence of their facilitated plants through links established by mycorrhizae, indicating that both plants and belowground mutualistic communities are all part of one system, coexisting by means of intrinsically linked interactions.
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Affiliation(s)
- L Sortibrán
- Departamento de Ecología de la Biodiversidad Instituto de Ecología, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - M Verdú
- Centro de Investigaciones sobre Desertificación (CIDE, CSIC-UV-GV), Valencia, Spain
| | - A Valiente-Banuet
- Departamento de Ecología de la Biodiversidad Instituto de Ecología, Universidad Nacional Autónoma de México, Ciudad de México, México
- Centro de Ciencias de la Complejidad Ciudad Universitaria México, Universidad Nacional Autónoma de México, Ciudad de México, México
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Roblin G, Octave S, Faucher M, Fleurat-Lessard P, Berjeaud JM. Cysteine: A multifaceted amino acid involved in signaling, plant resistance and antifungal development. Plant Physiol Biochem 2018; 129:77-89. [PMID: 29852365 DOI: 10.1016/j.plaphy.2018.05.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 05/04/2018] [Accepted: 05/22/2018] [Indexed: 06/08/2023]
Abstract
Early effects induced by cysteine were monitored using the model of Mimosa pudica pulvinar cells. Rapid dose-dependent membrane depolarization (within seconds) and modification of proton secretion (within minutes) were triggered at cysteine concentrations higher than 0.1 mM. These effects did not result from a modification of the plasma membrane H+-ATPase activity nor from a protonophore effect as shown by assays on plasma membrane vesicles isolated from pulvinar tissues. In a 0.5-10 mM range, cysteine inhibited the ion-driven turgor-mediated seismonastic reaction of Mimosa pudica primary pulvini and the dark-induced movement of Cassia fasciculata leaflets. At concentrations higher than 1 mM, it induced a long-lasting leaflet necrosis dependent on the concentration and treatment duration. Electron microscopy showed that cysteine induced important damage in the nucleus, mitochondria, endoplasmic reticulum and Golgi of the M. pudica motor cell. Cysteine inhibited in a concentration-dependent manner, from 0.5 to 20 mM, both the mycelial growth and the spore germination of the fungal pathogens Phaeomoniella chlamydospora and Phaeoacremonium minimum implicated in esca disease of grapevines. Using [35S] cysteine, we showed that the amino acid was absorbed following leaf spraying, translocated from leaves to other parts of grapevine cuttings and accumulated within trunks and roots. Therefore, cysteine showed relevant properties to be a candidate able to control fungal diseases either by acting as an early signal directing plant host reaction or/and by acting directly on fungal development.
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Affiliation(s)
- Gabriel Roblin
- Université de Poitiers, Ecologie & Biologie des Interactions, UMR CNRS 7267, 1 rue Georges Bonnet, TSA51106, 86073 Poitiers cedex 9, France
| | - Stéphane Octave
- Université de Poitiers, Ecologie & Biologie des Interactions, UMR CNRS 7267, 1 rue Georges Bonnet, TSA51106, 86073 Poitiers cedex 9, France; Current address: Sorbonne Universités, Université de Technologie de Compiègne, UMR CNRS 7025, Génie Enzymatique et Cellulaire, Rue du Docteur Schweitzer CS 60319, 60203 Compiègne Cedex, France
| | - Mireille Faucher
- Université de Poitiers, Ecologie & Biologie des Interactions, UMR CNRS 7267, 1 rue Georges Bonnet, TSA51106, 86073 Poitiers cedex 9, France
| | - Pierrette Fleurat-Lessard
- Université de Poitiers, Ecologie & Biologie des Interactions, UMR CNRS 7267, 1 rue Georges Bonnet, TSA51106, 86073 Poitiers cedex 9, France
| | - Jean-Marc Berjeaud
- Université de Poitiers, Ecologie & Biologie des Interactions, UMR CNRS 7267, 1 rue Georges Bonnet, TSA51106, 86073 Poitiers cedex 9, France.
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Daubech B, Remigi P, Doin de Moura G, Marchetti M, Pouzet C, Auriac MC, Gokhale CS, Masson-Boivin C, Capela D. Spatio-temporal control of mutualism in legumes helps spread symbiotic nitrogen fixation. eLife 2017; 6:e28683. [PMID: 29022875 PMCID: PMC5687860 DOI: 10.7554/elife.28683] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 10/11/2017] [Indexed: 01/01/2023] Open
Abstract
Mutualism is of fundamental importance in ecosystems. Which factors help to keep the relationship mutually beneficial and evolutionarily successful is a central question. We addressed this issue for one of the most significant mutualistic interactions on Earth, which associates plants of the leguminosae family and hundreds of nitrogen (N2)-fixing bacterial species. Here we analyze the spatio-temporal dynamics of fixers and non-fixers along the symbiotic process in the Cupriavidus taiwanensis-Mimosa pudica system. N2-fixing symbionts progressively outcompete isogenic non-fixers within root nodules, where N2-fixation occurs, even when they share the same nodule. Numerical simulations, supported by experimental validation, predict that rare fixers will invade a population dominated by non-fixing bacteria during serial nodulation cycles with a probability that is function of initial inoculum, plant population size and nodulation cycle length. Our findings provide insights into the selective forces and ecological factors that may have driven the spread of the N2-fixation mutualistic trait.
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Affiliation(s)
- Benoit Daubech
- The Laboratory of Plant-Microbe InteractionsUniversité de Toulouse, INRA, CNRSCastanet-TolosanFrance
| | - Philippe Remigi
- New Zealand Institute for Advanced StudyMassey UniversityAucklandNew Zealand
| | - Ginaini Doin de Moura
- The Laboratory of Plant-Microbe InteractionsUniversité de Toulouse, INRA, CNRSCastanet-TolosanFrance
| | - Marta Marchetti
- The Laboratory of Plant-Microbe InteractionsUniversité de Toulouse, INRA, CNRSCastanet-TolosanFrance
| | - Cécile Pouzet
- Fédération de Recherches Agrobiosciences, Interactions et Biodiversité, Plateforme d’Imagerie TRI, CNRS - UPSCastanet-TolosanFrance
| | - Marie-Christine Auriac
- The Laboratory of Plant-Microbe InteractionsUniversité de Toulouse, INRA, CNRSCastanet-TolosanFrance
- Fédération de Recherches Agrobiosciences, Interactions et Biodiversité, Plateforme d’Imagerie TRI, CNRS - UPSCastanet-TolosanFrance
| | - Chaitanya S Gokhale
- Research Group for Theoretical Models of Eco-evolutionary Dynamics, Department of Evolutionary TheoryMax Planck Institute for Evolutionary BiologyPlönGermany
| | - Catherine Masson-Boivin
- The Laboratory of Plant-Microbe InteractionsUniversité de Toulouse, INRA, CNRSCastanet-TolosanFrance
| | - Delphine Capela
- The Laboratory of Plant-Microbe InteractionsUniversité de Toulouse, INRA, CNRSCastanet-TolosanFrance
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De Meyer SE, Briscoe L, Martínez-Hidalgo P, Agapakis CM, de-Los Santos PE, Seshadri R, Reeve W, Weinstock G, O'Hara G, Howieson JG, Hirsch AM. Symbiotic Burkholderia Species Show Diverse Arrangements of nif/fix and nod Genes and Lack Typical High-Affinity Cytochrome cbb3 Oxidase Genes. Mol Plant Microbe Interact 2016; 29:609-619. [PMID: 27269511 DOI: 10.1094/mpmi-05-16-0091-r] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Genome analysis of fourteen mimosoid and four papilionoid beta-rhizobia together with fourteen reference alpha-rhizobia for both nodulation (nod) and nitrogen-fixing (nif/fix) genes has shown phylogenetic congruence between 16S rRNA/MLSA (combined 16S rRNA gene sequencing and multilocus sequence analysis) and nif/fix genes, indicating a free-living diazotrophic ancestry of the beta-rhizobia. However, deeper genomic analysis revealed a complex symbiosis acquisition history in the beta-rhizobia that clearly separates the mimosoid and papilionoid nodulating groups. Mimosoid-nodulating beta-rhizobia have nod genes tightly clustered in the nodBCIJHASU operon, whereas papilionoid-nodulating Burkholderia have nodUSDABC and nodIJ genes, although their arrangement is not canonical because the nod genes are subdivided by the insertion of nif and other genes. Furthermore, the papilionoid Burkholderia spp. contain duplications of several nod and nif genes. The Burkholderia nifHDKEN and fixABC genes are very closely related to those found in free-living diazotrophs. In contrast, nifA is highly divergent between both groups, but the papilionoid species nifA is more similar to alpha-rhizobia nifA than to other groups. Surprisingly, for all Burkholderia, the fixNOQP and fixGHIS genes required for cbb3 cytochrome oxidase production and assembly are missing. In contrast, symbiotic Cupriavidus strains have fixNOQPGHIS genes, revealing a divergence in the evolution of two distinct electron transport chains required for nitrogen fixation within the beta-rhizobia.
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Affiliation(s)
- Sofie E De Meyer
- 1 Centre for Rhizobium Studies, Murdoch University, Western Australia, Australia
| | - Leah Briscoe
- 2 Dept. of Molecular, Cell and Developmental Biology, UCLA, Los Angeles, CA, U.S.A
| | | | - Christina M Agapakis
- 2 Dept. of Molecular, Cell and Developmental Biology, UCLA, Los Angeles, CA, U.S.A
| | - Paulina Estrada de-Los Santos
- 3 Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas. Prol. Carpio y Plan de Ayala s/n, Col. Santo Tomás, Del. Miguel Hidalgo, C.P. 11340, México
| | | | - Wayne Reeve
- 1 Centre for Rhizobium Studies, Murdoch University, Western Australia, Australia
| | - George Weinstock
- 5 The Jackson Laboratory for Genomic Medicine, Farmington, CT, U.S.A; and
| | - Graham O'Hara
- 1 Centre for Rhizobium Studies, Murdoch University, Western Australia, Australia
| | - John G Howieson
- 1 Centre for Rhizobium Studies, Murdoch University, Western Australia, Australia
| | - Ann M Hirsch
- 2 Dept. of Molecular, Cell and Developmental Biology, UCLA, Los Angeles, CA, U.S.A
- 6 The Molecular Biology Institute, UCLA, Los Angeles, CA, U.S.A
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Baraúna AC, Rouws LFM, Simoes-Araujo JL, Dos Reis Junior FB, Iannetta PPM, Maluk M, Goi SR, Reis VM, James EK, Zilli JE. Rhizobium altiplani sp. nov., isolated from effective nodules on Mimosa pudica growing in untypically alkaline soil in central Brazil. Int J Syst Evol Microbiol 2016; 66:4118-4124. [PMID: 27453319 DOI: 10.1099/ijsem.0.001322] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Root nodule bacteria were isolated from nodules on Mimosa pudica L. growing in neutral-alkaline soils from the Distrito Federal in central Brazil. The 16S rRNA gene sequence analysis of 10 strains placed them into the genus Rhizobium with the closest neighbouring species (each with 99 % similarity) being Rhizobium grahamii, Rhizobium cauense, Rhizobium mesoamericanum and Rhizobium tibeticum. This high similarity, however, was not confirmed by multi-locus sequence analysis (MLSA) using three housekeeping genes (recA, glnII and rpoB), which revealed R. mesoamericanum CCGE 501T to be the closest type strain (92 % sequence similarity or less). Chemotaxonomic data, including fatty acid profiles [with majority being C19 : 0 cyclo ω8c and summed feature 8 (C18 : 1ω7c/C18 : 1ω6c)], DNA G+C content (57.6 mol%), and carbon compound utilization patterns supported the placement of the novel strains in the genus Rhizobium. Results of average nucleotide identity (ANI) differentiated the novel strains from the closest species of the genus Rhizobium, R. mesoamericanum, R. grahamii and R. tibeticum with 89.0, 88.1 and 87.8 % similarity, respectively. The symbiotic genes essential for nodulation (nodC) and nitrogen fixation (nifH) were most similar (99-100 %) to those of R. mesoamericanum, another Mimosa-nodulating species. Based on the current data, these 10 strains represent a novel species of the genus Rhizobium for which the name Rhizobium altiplani sp. nov. is proposed. The type strain is BR 10423T (=HAMBI 3664T).
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Affiliation(s)
- Alexandre C Baraúna
- Universidade Federal Rural do Rio de Janeiro, Rodovia BR 465 km 07, Seropédica, Rio de Janeiro 23890-000, Brazil
| | - Luc F M Rouws
- Embrapa Agrobiologia, Rodovia BR 465 km 07, Seropédica, Rio de Janeiro 23891-000, Brazil
| | - Jean L Simoes-Araujo
- Embrapa Agrobiologia, Rodovia BR 465 km 07, Seropédica, Rio de Janeiro 23891-000, Brazil
| | | | | | - Marta Maluk
- The James Hutton Institute, Invergowrie, Dundee DD2 5DA, UK
| | - Silvia R Goi
- Universidade Federal Rural do Rio de Janeiro, Rodovia BR 465 km 07, Seropédica, Rio de Janeiro 23890-000, Brazil
| | - Veronica M Reis
- Embrapa Agrobiologia, Rodovia BR 465 km 07, Seropédica, Rio de Janeiro 23891-000, Brazil
| | - Euan K James
- The James Hutton Institute, Invergowrie, Dundee DD2 5DA, UK
| | - Jerri E Zilli
- Embrapa Agrobiologia, Rodovia BR 465 km 07, Seropédica, Rio de Janeiro 23891-000, Brazil
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de Souza TAF, Rodriguez-Echeverría S, de Andrade LA, Freitas H. Arbuscular mycorrhizal fungi in Mimosa tenuiflora (Willd.) Poir from Brazilian semi-arid. Braz J Microbiol 2016; 47:359-66. [PMID: 26991277 PMCID: PMC4874677 DOI: 10.1016/j.bjm.2016.01.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Accepted: 09/21/2015] [Indexed: 12/20/2022] Open
Abstract
Many plant species from Brazilian semi-arid present arbuscular mycorrhizal fungi (AMF) in their rhizosphere. These microorganisms play a key role in the establishment, growth, survival of plants and protection against drought, pathogenic fungi and nematodes. This study presents a quantitative analysis of the AMF species associated with Mimosa tenuiflora, an important native plant of the Caatinga flora. AMF diversity, spore abundance and root colonization were estimated in seven sampling locations in the Ceará and Paraíba States, during September of 2012. There were significant differences in soil properties, spore abundance, percentage of root colonization, and AMF diversity among sites. Altogether, 18 AMF species were identified, and spores of the genera Acaulospora, Claroideoglomus, Dentiscutata, Entrophospora, Funneliformis, Gigaspora, Glomus, Racocetra, Rhizoglomus and Scutellospora were observed. AMF species diversity and their spore abundance found in M. tenuiflora rhizosphere shown that this native plant species is an important host plant to AMF communities from Brazilian semi-arid region. We concluded that: (a) during the dry period and in semi-arid conditions, there is a high spore production in M. tenuiflora root zone; and (b) soil properties, as soil pH and available phosphorous, affect AMF species diversity, thus constituting key factors for the similarity/dissimilarity of AMF communities in the M. tenuiflora root zone among sites.
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Affiliation(s)
| | | | - Leonaldo Alves de Andrade
- Agrarian Science Center, Department of Soils and Rural Engineering, Federal University of Paraíba, Areia, Paraíba, Brazil
| | - Helena Freitas
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
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Barbosa Lima A, Cannavan FS, Navarrete AA, Teixeira WG, Kuramae EE, Tsai SM. Amazonian dark Earth and plant species from the Amazon region contribute to shape rhizosphere bacterial communities. Microb Ecol 2015; 69:855-66. [PMID: 25103911 DOI: 10.1007/s00248-014-0472-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Accepted: 07/25/2014] [Indexed: 05/09/2023]
Abstract
Amazonian Dark Earths (ADE) or Terra Preta de Índio formed in the past by pre-Columbian populations are highly sustained fertile soils supported by microbial communities that differ from those extant in adjacent soils. These soils are found in the Amazon region and are considered as a model soil when compared to the surrounding and background soils. The aim of this study was to assess the effects of ADE and its surrounding soil on the rhizosphere bacterial communities of two leguminous plant species that frequently occur in the Amazon region in forest sites (Mimosa debilis) and open areas (Senna alata). Bacterial community structure was evaluated using terminal restriction fragment length polymorphism (T-RFLP) and bacterial community composition by V4 16S rRNA gene region pyrosequencing. T-RFLP analysis showed effect of soil types and plant species on rhizosphere bacterial community structure. Differential abundance of bacterial phyla, such as Acidobacteria, Actinobacteria, Verrucomicrobia, and Firmicutes, revealed that soil type contributes to shape the bacterial communities. Furthermore, bacterial phyla such as Firmicutes and Nitrospira were mostly influenced by plant species. Plant roots influenced several soil chemical properties, especially when plants were grown in ADE. These results showed that differences observed in rhizosphere bacterial community structure and composition can be influenced by plant species and soil fertility due to variation in soil attributes.
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Affiliation(s)
- Amanda Barbosa Lima
- Laboratory of Cellular and Molecular Biology, Center for Nuclear Energy in Agriculture, University of São Paulo, Piracicaba, Brazil,
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Marchetti M, Jauneau A, Capela D, Remigi P, Gris C, Batut J, Masson-Boivin C. Shaping bacterial symbiosis with legumes by experimental evolution. Mol Plant Microbe Interact 2014; 27:956-964. [PMID: 25105803 DOI: 10.1094/mpmi-03-14-0083-r] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Nitrogen-fixing symbionts of legumes have appeared after the emergence of legumes on earth, approximately 70 to 130 million years ago. Since then, symbiotic proficiency has spread to distant genera of α- and β-proteobacteria, via horizontal transfer of essential symbiotic genes and subsequent recipient genome remodeling under plant selection pressure. To tentatively replay rhizobium evolution in laboratory conditions, we previously transferred the symbiotic plasmid of the Mimosa symbiont Cupriavidus taiwanensis in the plant pathogen Ralstonia solanacearum, and selected spontaneous nodulating variants of the chimeric Ralstonia sp. using Mimosa pudica as a trap. Here, we pursued the evolution experiment by submitting two of the rhizobial drafts to serial ex planta-in planta (M. pudica) passages that may mimic alternating of saprophytic and symbiotic lives of rhizobia. Phenotyping 16 cycle-evolved clones showed strong and parallel evolution of several symbiotic traits (i.e., nodulation competitiveness, intracellular infection, and bacteroid persistence). Simultaneously, plant defense reactions decreased within nodules, suggesting that the expression of symbiotic competence requires the capacity to limit plant immunity. Nitrogen fixation was not acquired in the frame of this evolutionarily short experiment, likely due to the still poor persistence of final clones within nodules compared with the reference rhizobium C. taiwanensis. Our results highlight the potential of experimental evolution in improving symbiotic proficiency and for the elucidation of relationship between symbiotic capacities and elicitation of immune responses.
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Gehlot HS, Tak N, Kaushik M, Mitra S, Chen WM, Poweleit N, Panwar D, Poonar N, Parihar R, Tak A, Sankhla IS, Ojha A, Rao SR, Simon MF, dos Reis Junior FB, Perigolo N, Tripathi AK, Sprent JI, Young JPW, James EK, Gyaneshwar P. An invasive Mimosa in India does not adopt the symbionts of its native relatives. Ann Bot 2013; 112:179-96. [PMID: 23712450 PMCID: PMC3690997 DOI: 10.1093/aob/mct112] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Accepted: 04/05/2013] [Indexed: 05/02/2023]
Abstract
BACKGROUND AND AIMS The large monophyletic genus Mimosa comprises approx. 500 species, most of which are native to the New World, with Central Brazil being the main centre of radiation. All Brazilian Mimosa spp. so far examined are nodulated by rhizobia in the betaproteobacterial genus Burkholderia. Approximately 10 Mya, transoceanic dispersal resulted in the Indian subcontinent hosting up to six endemic Mimosa spp. The nodulation ability and rhizobial symbionts of two of these, M. hamata and M. himalayana, both from north-west India, are here examined, and compared with those of M. pudica, an invasive species. METHODS Nodules were collected from several locations, and examined by light and electron microscopy. Rhizobia isolated from them were characterized in terms of their abilities to nodulate the three Mimosa hosts. The molecular phylogenetic relationships of the rhizobia were determined by analysis of 16S rRNA, nifH and nodA gene sequences. KEY RESULTS Both native Indian Mimosa spp. nodulated effectively in their respective rhizosphere soils. Based on 16S rRNA, nifH and nodA sequences, their symbionts were identified as belonging to the alphaproteobacterial genus Ensifer, and were closest to the 'Old World' Ensifer saheli, E. kostiensis and E. arboris. In contrast, the invasive M. pudica was predominantly nodulated by Betaproteobacteria in the genera Cupriavidus and Burkholderia. All rhizobial strains tested effectively nodulated their original hosts, but the symbionts of the native species could not nodulate M. pudica. CONCLUSIONS The native Mimosa spp. in India are not nodulated by the Burkholderia symbionts of their South American relatives, but by a unique group of alpha-rhizobial microsymbionts that are closely related to the 'local' Old World Ensifer symbionts of other mimosoid legumes in north-west India. They appear not to share symbionts with the invasive M. pudica, symbionts of which are mostly beta-rhizobial.
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Affiliation(s)
- Hukam Singh Gehlot
- BNF and Stress Biology Lab., Department of Botany, J.N. Vyas University, Jodhpur-342001, India
| | - Nisha Tak
- BNF and Stress Biology Lab., Department of Botany, J.N. Vyas University, Jodhpur-342001, India
| | - Muskan Kaushik
- BNF and Stress Biology Lab., Department of Botany, J.N. Vyas University, Jodhpur-342001, India
| | - Shubhajit Mitra
- Biological Sciences, University of Wisconsin Milwaukee, 3209 N Maryland Ave, Milwaukee, WI 53211, USA
| | - Wen-Ming Chen
- Laboratory of Microbiology, Dept. of Seafood Science, National Kaohsiung Marine University, Kaohsiung City 811, Taiwan
| | - Nicole Poweleit
- Biological Sciences, University of Wisconsin Milwaukee, 3209 N Maryland Ave, Milwaukee, WI 53211, USA
| | - Dheeren Panwar
- BNF and Stress Biology Lab., Department of Botany, J.N. Vyas University, Jodhpur-342001, India
| | - Neetu Poonar
- BNF and Stress Biology Lab., Department of Botany, J.N. Vyas University, Jodhpur-342001, India
| | - Rashmita Parihar
- BNF and Stress Biology Lab., Department of Botany, J.N. Vyas University, Jodhpur-342001, India
| | - Alkesh Tak
- BNF and Stress Biology Lab., Department of Botany, J.N. Vyas University, Jodhpur-342001, India
| | - Indu Singh Sankhla
- BNF and Stress Biology Lab., Department of Botany, J.N. Vyas University, Jodhpur-342001, India
| | - Archana Ojha
- Department of Biotechnology and Bioinformatics, North Eastern Hill University, Shillong, Meghalaya, India
| | - Satyawada Rama Rao
- Department of Biotechnology and Bioinformatics, North Eastern Hill University, Shillong, Meghalaya, India
| | - Marcelo F. Simon
- Embrapa Recursos Genéticos e Biotecnologia, Brasília, 70770-901, DF, Brazil
| | | | - Natalia Perigolo
- Departamento de Botânica, Universidade de Brasília, Brasília, 70910-900, DF, Brazil
| | - Anil K. Tripathi
- School of Biotechnology, Faculty of Science, Banaras Hindu University, Varanasi-221005, India
| | - Janet I. Sprent
- Division of Plant Sciences, University of Dundee at JHI, Dundee DD2 5DA, UK
| | - J. Peter W. Young
- Department of Biology 3, University of York, PO Box 373, York YO10 5YW, UK
| | - Euan K. James
- The James Hutton Institute, Invergowrie, Dundee DD2 5DA, UK
| | - Prasad Gyaneshwar
- Biological Sciences, University of Wisconsin Milwaukee, 3209 N Maryland Ave, Milwaukee, WI 53211, USA
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Taulé C, Zabaleta M, Mareque C, Platero R, Sanjurjo L, Sicardi M, Frioni L, Battistoni F, Fabiano E. New betaproteobacterial Rhizobium strains able to efficiently nodulate Parapiptadenia rigida (Benth.) Brenan. Appl Environ Microbiol 2012; 78:1692-700. [PMID: 22226956 PMCID: PMC3298154 DOI: 10.1128/aem.06215-11] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2011] [Accepted: 12/23/2011] [Indexed: 11/20/2022] Open
Abstract
Among the leguminous trees native to Uruguay, Parapiptadenia rigida (Angico), a Mimosoideae legume, is one of the most promising species for agroforestry. Like many other legumes, it is able to establish symbiotic associations with rhizobia and belongs to the group known as nitrogen-fixing trees, which are major components of agroforestry systems. Information about rhizobial symbionts for this genus is scarce, and thus, the aim of this work was to identify and characterize rhizobia associated with P. rigida. A collection of Angico-nodulating isolates was obtained, and 47 isolates were selected for genetic studies. According to enterobacterial repetitive intergenic consensus PCR patterns and restriction fragment length polymorphism analysis of their nifH and 16S rRNA genes, the isolates could be grouped into seven genotypes, including the genera Burkholderia, Cupriavidus, and Rhizobium, among which the Burkholderia genotypes were the predominant group. Phylogenetic studies of nifH, nodA, and nodC sequences from the Burkholderia and the Cupriavidus isolates indicated a close relationship of these genes with those from betaproteobacterial rhizobia (beta-rhizobia) rather than from alphaproteobacterial rhizobia (alpha-rhizobia). In addition, nodulation assays with representative isolates showed that while the Cupriavidus isolates were able to effectively nodulate Mimosa pudica, the Burkholderia isolates produced white and ineffective nodules on this host.
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Affiliation(s)
- Cecilia Taulé
- Departamento de Bioquímica y Genómica Microbianas, Instituto de Investigaciones Biológicas Clemente Estable, MEC, Unidad Asociada a la Facultad de Ciencias, Montevideo, Uruguay
| | - María Zabaleta
- Departamento de Bioquímica y Genómica Microbianas, Instituto de Investigaciones Biológicas Clemente Estable, MEC, Unidad Asociada a la Facultad de Ciencias, Montevideo, Uruguay
| | - Cintia Mareque
- Departamento de Bioquímica y Genómica Microbianas, Instituto de Investigaciones Biológicas Clemente Estable, MEC, Unidad Asociada a la Facultad de Ciencias, Montevideo, Uruguay
| | - Raúl Platero
- Departamento de Bioquímica y Genómica Microbianas, Instituto de Investigaciones Biológicas Clemente Estable, MEC, Unidad Asociada a la Facultad de Ciencias, Montevideo, Uruguay
| | - Lucía Sanjurjo
- Laboratorio de Microbiología, Facultad de Agronomía, UdelaR, Montevideo, Uruguay
| | - Margarita Sicardi
- Laboratorio de Microbiología del Suelo, Facultad de Ciencias-CIN, UdelaR, Montevideo, Uruguay
| | - Lillian Frioni
- Laboratorio de Microbiología, Facultad de Agronomía, UdelaR, Montevideo, Uruguay
| | - Federico Battistoni
- Departamento de Bioquímica y Genómica Microbianas, Instituto de Investigaciones Biológicas Clemente Estable, MEC, Unidad Asociada a la Facultad de Ciencias, Montevideo, Uruguay
| | - Elena Fabiano
- Departamento de Bioquímica y Genómica Microbianas, Instituto de Investigaciones Biológicas Clemente Estable, MEC, Unidad Asociada a la Facultad de Ciencias, Montevideo, Uruguay
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Dos Reis FB, Simon MF, Gross E, Boddey RM, Elliott GN, Neto NE, de Fatima Loureiro M, de Queiroz LP, Scotti MR, Chen WM, Norén A, Rubio MC, de Faria SM, Bontemps C, Goi SR, Young JPW, Sprent JI, James EK. Nodulation and nitrogen fixation by Mimosa spp. in the Cerrado and Caatinga biomes of Brazil. New Phytol 2010; 186:934-946. [PMID: 20456044 DOI: 10.1111/j.1469-8137.2010.03267.x] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
*An extensive survey of nodulation in the legume genus Mimosa was undertaken in two major biomes in Brazil, the Cerrado and the Caatinga, in both of which there are high degrees of endemicity of the genus. *Nodules were collected from 67 of the 70 Mimosa spp. found. Thirteen of the species were newly reported as nodulating. Nodules were examined by light and electron microscopy, and all except for M. gatesiae had a structure typical of effective Mimosa nodules. The endosymbiotic bacteria in nodules from all of the Mimosa spp. were identified as Burkholderia via immunolabelling with an antibody against Burkholderia phymatum STM815. *Twenty of the 23 Mimosa nodules tested were shown to contain nitrogenase by immunolabelling with an antibody to the nitrogenase Fe- (nifH) protein, and using the delta(15)N ((15)N natural abundance) technique, contributions by biological N(2) fixation of up to 60% of total plant N were calculated for Caatinga Mimosa spp. *It is concluded that nodulation in Mimosa is a generic character, and that the preferred symbionts of Brazilian species are Burkholderia. This is the first study to demonstrate N(2) fixation by beta-rhizobial symbioses in the field.
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Affiliation(s)
| | | | - Eduardo Gross
- Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz, km 16, Ilhéus 45662-900 BA, Brazil
| | - Robert M Boddey
- Embrapa Agrobiologia, km 47, Seropédica, 23851-970, RJ, Brazil
| | | | - Nicolau E Neto
- Faculdade de Agronomia, Universidade Federal de Mato Grosso, Cuiabá, 78060-900, MT, Brazil
| | - M de Fatima Loureiro
- Faculdade de Agronomia, Universidade Federal de Mato Grosso, Cuiabá, 78060-900, MT, Brazil
| | - Luciano P de Queiroz
- Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Feira de Santana 44031-460 BA, Brazil
| | - Maria Rita Scotti
- Departamento de Botânica, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, 31270-901 Belo Horizonte, MG, Brazil
| | - Wen-Ming Chen
- Laboratory of Microbiology, Department of Seafood Science, National Kaohsiung Marine University, Kaohsiung City 811, Taiwan
| | - Agneta Norén
- Department of Biochemistry & Biophysics, Stockholm University, S-106 91 Sweden
| | - Maria C Rubio
- Departamento de Nutrición Vegetal, Estación Experimental de Aula Dei, Consejo Superior de Investigaciones Científicas, 50080 Zaragoza, Spain
| | | | - Cyril Bontemps
- UMR1128 Génétique et Microbiologie, Nancy-Université, INRA, Boulevard des Aiguillettes BP70239, 54506 Vandoeuvre-lès-Nancy Cedex, France
| | - Silvia R Goi
- Department of Biology 3, University of York, PO Box 373, York YO10 5YW, UK
| | - J Peter W Young
- Departamento de Ciências Ambientais, Instituto de Florestas, Universidade Federal Rural do Rio de Janeiro, Seropédica, 23890-000, RJ, Brazil
| | - Janet I Sprent
- Division of Plant Sciences, University of Dundee at SCRI, DD2 5DA, UK
| | - Euan K James
- College of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
- Present address: Scottish Crop Research Institute, Invergowrie, Dundee DD2 5DA, UK
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Liu X, Chen W, Zhang B. [Beta-Proteorhizobia and nonrhizobial species--a review]. Wei Sheng Wu Xue Bao 2008; 48:1408-1412. [PMID: 19160827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The terms alpha- and beta-rhizobia were proposed to distinguish the rhizobial alpha- and beta-Proteorhizobia respectively. In this review we present recently development of rhizobial taxonomy about beta-rhizobia in the genus Burkholeria, Cupriavidus isolated from Mimosa and alpha-Proteorhizobia belonging to Methylobacterium, Devosia, Ochrobactrum, Phyllobacterium and Blastobacter lineage. Furthermore, we also introduced the evolution of symbiosis related genes such as nodA and nifH, and posed some questions in detecting rhizobia. Finally, we discuss the prospects of research on rhizoiba in future.
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Affiliation(s)
- Xiaoyun Liu
- College of Life Sciences, Hebei University, Baoding 100072, China.
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16
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Chen WM, de Faria SM, Chou JH, James EK, Elliott GN, Sprent JI, Bontemps C, Young JPW, Vandamme P. Burkholderia sabiae sp. nov., isolated from root nodules of Mimosa caesalpiniifolia. Int J Syst Evol Microbiol 2008; 58:2174-9. [PMID: 18768625 DOI: 10.1099/ijs.0.65816-0] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
MESH Headings
- Bacterial Proteins/analysis
- Bacterial Typing Techniques
- Brazil
- Burkholderia/classification
- Burkholderia/genetics
- Burkholderia/isolation & purification
- Burkholderia/physiology
- Cluster Analysis
- DNA Fingerprinting
- DNA, Bacterial/chemistry
- DNA, Bacterial/genetics
- DNA, Ribosomal/chemistry
- DNA, Ribosomal/genetics
- Electrophoresis, Gel, Pulsed-Field
- Fatty Acids/analysis
- Genes, rRNA
- Mimosa/microbiology
- Molecular Sequence Data
- Nitrogen Fixation
- Nucleic Acid Hybridization
- Phylogeny
- Plant Roots/microbiology
- Proteome/analysis
- RNA, Bacterial/genetics
- RNA, Ribosomal, 16S/genetics
- Sequence Analysis, DNA
- Sequence Homology, Nucleic Acid
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Affiliation(s)
- Wen-Ming Chen
- Laboratory of Microbiology, Department of Seafood Science, National Kaohsiung Marine University, 142 Hai-Chuan Rd, Nan-Tzu, Kaohsiung City 811, Taiwan.
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Chen WM, Wu CH, James EK, Chang JS. Metal biosorption capability of Cupriavidus taiwanensis and its effects on heavy metal removal by nodulated Mimosa pudica. J Hazard Mater 2008; 151:364-71. [PMID: 17624667 DOI: 10.1016/j.jhazmat.2007.05.082] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2007] [Revised: 05/29/2007] [Accepted: 05/29/2007] [Indexed: 05/16/2023]
Abstract
A novel metal biosorption system consisting of the symbiotic combination of an indigenous metal-resistant rhizobial strain, Cupriavidus taiwanensis TJ208, and its host plant Mimosa pudica has been developed for the removal of heavy-metal pollutants. Free-living C. taiwanensis TJ208 cells were able to adsorb 50.1, 19.0, and 19.6 mg/g of Pb, Cu, and Cd, respectively. After nodulation via inoculation with strain TJ208, the metal uptake ability of M. pudica markedly increased, as the nodulated M. pudica displayed a high metal uptake capacity (qmax) of 485, 25, and 43 mg/g, respectively, which is 86, 12, and 70% higher than that of nodule-free plants. Moreover, with TJ208 nodules, the M. pudica plant also displayed a 71, 81, and 33% enhancement in metal adsorption efficiency (eta) for Pb, Cu, and Cd, respectively. The nodulation appeared to give the greatest enhancing effect on the uptake of Pb, which is consistent with the preference of metal adsorption ability of TJ208. This seems to indicate the crucial role that the rhizobial strain may play in stimulating metal uptake of the nodulated plant. Furthermore, the results show that metal accumulation in the nodulated plant mainly occurred in the roots, accounting for 65-95% of total metal uptake. In contrast, the nodules and the shoots only contributed to 3-12 and 2-23% of total metal uptake, respectively. Nevertheless, the specific adsorption capacity of nodules is comparable to that of the roots. Hence, this work demonstrates the feasibility and effectiveness of using the nodulated plants to promote phyto-removal of heavy metals from the polluted environment as well as to restrict the metal contaminants in the unharmful region of the plant.
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Affiliation(s)
- Wen-Ming Chen
- Department of Seafood Science, National Kaohsiung Marine University, Kaohsiung, Taiwan
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18
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Andam CP, Mondo SJ, Parker MA. Monophyly of nodA and nifH genes across Texan and Costa Rican populations of Cupriavidus nodule symbionts. Appl Environ Microbiol 2007; 73:4686-90. [PMID: 17526782 PMCID: PMC1932833 DOI: 10.1128/aem.00160-07] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
nodA and nifH phylogenies for Cupriavidus nodule bacteria from native legumes in Texas and Costa Rica grouped all strains into a single clade nested among neotropical Burkholderia strains. Thus, Cupriavidus symbiotic genes were not acquired independently in different regions and are derived from other Betaproteobacteria rather than from alpha-rhizobial donors.
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Affiliation(s)
- Cheryl P Andam
- Department of Biological Sciences, State University of New York, Binghamton, NY 13902-6000, USA
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19
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Liu XY, Wang ET, Li Y, Chen WX. Diverse bacteria isolated from root nodules of Trifolium, Crotalaria and Mimosa grown in the subtropical regions of China. Arch Microbiol 2007; 188:1-14. [PMID: 17497134 DOI: 10.1007/s00203-007-0209-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2006] [Revised: 10/11/2006] [Accepted: 12/22/2006] [Indexed: 11/28/2022]
Abstract
To analyze the diversity and relationships of rhizobia in the subtropical and tropical zones of China, we characterized 67 bacterial strains isolated from root nodules of five legume species in the genera Trifolium, Crotalaria and Mimosa . PCR-amplified 16S rDNA RFLP, numerical taxonomy, SDS-PAGE of whole cell proteins, sequencing of 16S rDNA and DNA-DNA hybridization grouped the isolates into 17 lineages belonging to Bradyrhizobium, Mesorhizobium, Rhizobium, Sinorhizobium and Burkholderia, as well as a non-symbiotic group of Agrobacterium. The Rhizobium group contained twenty strains isolated from Mimosa pudica, Crotalaria pallida and two species of Trifolium. Fifteen of them were R. leguminosarum. Twenty-one strains isolated from four species of Trifolium, Crotalaria and Mimosa were classified into five groups of Bradyrhizobium, including B. japonicum. Agrobacterium group composed of 20 isolates from Mimosa pudica, C. pallida and Trifolium fragiferum. In addition, several strains of Sinorhizobium and Mesorhizobium associated with Trifolium and Burkholderia associated with Mimosa pudica were also identified. The predominance of Bradyrhizobium in the nodules of Trifolium was a novel finding and it demonstrated that the nodule microsymbionts might be selected by both the geographic factors and the legume hosts.
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Affiliation(s)
- Xiao Yun Liu
- Key laboratory of Agro-Microbial Resource and Application, Ministry of Agriculture/College of Biological Sciences, China Agricultural University, Beijing, 100094, China
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Chen WM, de Faria SM, James EK, Elliott GN, Lin KY, Chou JH, Sheu SY, Cnockaert M, Sprent JI, Vandamme P. Burkholderia nodosa sp. nov., isolated from root nodules of the woody Brazilian legumes Mimosa bimucronata and Mimosa scabrella. Int J Syst Evol Microbiol 2007; 57:1055-1059. [PMID: 17473258 DOI: 10.1099/ijs.0.64873-0] [Citation(s) in RCA: 126] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Three strains, Br3437T, Br3461 and Br3470, were isolated from nitrogen-fixing nodules on the roots of Mimosa scabrella (Br3437T) and Mimosa bimucronata (Br3461, Br3470), both of which are woody legumes native to Brazil. On the basis of 16S rRNA gene sequence similarities, all the strains were shown previously to belong to the genus Burkholderia. A polyphasic approach, including DNA–DNA hybridizations, PFGE of whole-genome DNA profiles, whole-cell protein analyses, fatty acid methyl ester analysis and extensive biochemical characterization, was used to clarify the taxonomic position of these strains further; the strains are here classified within a novel species, for which the name Burkholderia nodosa sp. nov. is proposed. The type strain, Br3437T (=LMG 23741T=BCRC 17575T), was isolated from nodules of M. scabrella.
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MESH Headings
- Bacterial Proteins/analysis
- Bacterial Typing Techniques
- Brazil
- Burkholderia/chemistry
- Burkholderia/classification
- Burkholderia/isolation & purification
- Burkholderia/physiology
- Cluster Analysis
- DNA Fingerprinting
- DNA, Bacterial/chemistry
- DNA, Bacterial/genetics
- DNA, Ribosomal/chemistry
- DNA, Ribosomal/genetics
- Electrophoresis, Gel, Pulsed-Field
- Fatty Acids/analysis
- Genes, rRNA
- Mimosa/microbiology
- Molecular Sequence Data
- Nucleic Acid Hybridization
- Phylogeny
- Plant Roots/microbiology
- Proteome/analysis
- RNA, Bacterial/genetics
- RNA, Ribosomal, 16S/genetics
- Sequence Analysis, DNA
- Sequence Homology, Nucleic Acid
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Affiliation(s)
- Wen-Ming Chen
- Laboratory of Microbiology, Department of Seafood Science, National Kaohsiung Marine University, 142 Hai-Chuan Rd, Nan-Tzu, Kaohsiung City 811, Taiwan
| | - Sergio M de Faria
- EMBRAPA-Agrobiologia, km 47, Seropedica, 23851-970 Rio de Janeiro, Brazil
| | - Euan K James
- School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
| | | | - Kuan-Yin Lin
- Laboratory of Microbiology, Department of Seafood Science, National Kaohsiung Marine University, 142 Hai-Chuan Rd, Nan-Tzu, Kaohsiung City 811, Taiwan
| | - Jui-Hsing Chou
- Department of Soil Environmental Science, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan
| | - Shih-Yi Sheu
- Department of Marine Biotechnology, National Kaohsiung Marine University, Kaohsiung, Taiwan
| | - M Cnockaert
- Laboratorium voor Microbiologie, Universiteit Gent, K. L. Ledeganckstraat 35, B-9000 Gent, Belgium
| | - Janet I Sprent
- School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
| | - Peter Vandamme
- Laboratorium voor Microbiologie, Universiteit Gent, K. L. Ledeganckstraat 35, B-9000 Gent, Belgium
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21
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Elliott GN, Chen WM, Chou JH, Wang HC, Sheu SY, Perin L, Reis VM, Moulin L, Simon MF, Bontemps C, Sutherland JM, Bessi R, de Faria SM, Trinick MJ, Prescott AR, Sprent JI, James EK. Burkholderia phymatum is a highly effective nitrogen-fixing symbiont of Mimosa spp. and fixes nitrogen ex planta. New Phytol 2007; 173:168-80. [PMID: 17176403 DOI: 10.1111/j.1469-8137.2006.01894.x] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
* The ability of Burkholderia phymatum STM815 to effectively nodulate Mimosa spp., and to fix nitrogen ex planta, was compared with that of the known Mimosa symbiont Cupriavidus taiwanensis LMG19424. * Both strains were equally effective symbionts of M. pudica, but nodules formed by STM815 had greater nitrogenase activity. STM815 was shown to have a broader host range across the genus Mimosa than LMG19424, nodulating 30 out of 31 species, 21 of these effectively. LMG19424 effectively nodulated only nine species. GFP-marked variants were used to visualise symbiont presence within nodules. * STM815 gave significant acetylene reduction assay (ARA) activity in semisolid JMV medium ex planta, but no ARA activity was detected with LMG19424. 16S rDNA sequences of two isolates originally from Mimosa nodules in Papua New Guinea (NGR114 and NGR195A) identified them as Burkholderia phymatum also, with nodA, nodC and nifH genes of NGR195A identical to those of STM815. * B. phymatum is therefore an effective Mimosa symbiont with a broad host range, and is the first reported beta-rhizobial strain to fix nitrogen in free-living culture.
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Chen WM, James EK, Coenye T, Chou JH, Barrios E, de Faria SM, Elliott GN, Sheu SY, Sprent JI, Vandamme P. Burkholderia mimosarum sp. nov., isolated from root nodules of Mimosa spp. from Taiwan and South America. Int J Syst Evol Microbiol 2006; 56:1847-1851. [PMID: 16902019 DOI: 10.1099/ijs.0.64325-0] [Citation(s) in RCA: 142] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Fourteen strains were isolated from nitrogen-fixing nodules on the roots of plants of the genus Mimosa growing in Taiwan, Brazil and Venezuela. On the basis of 16S rRNA gene sequence similarities, all of the strains were previously shown to be closely related to each other and to belong to the genus Burkholderia. A polyphasic approach, including DNA–DNA reassociation, whole-cell protein analysis, fatty acid methyl ester analysis and extensive biochemical characterization, was used to clarify the taxonomic position of these strains: all 14 strains were classified as representing a novel species, for which the name Burkholderia mimosarum sp. nov. is proposed. The type strain, PAS44T (=LMG 23256T =BCRC 17516T), was isolated from Mimosa pigra nodules in Taiwan.
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Affiliation(s)
- Wen-Ming Chen
- Department of Seafood Science, National Kaohsiung Marine University, No. 142, Hai-Chuan Road, Nan-Tzu, Kaohsiung City 811, Taiwan
| | - Euan K James
- School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
| | - Tom Coenye
- Laboratorium voor Microbiologie, Universiteit Gent, K. L. Ledeganckstraat 35, B-9000 Gent, Belgium
| | - Jui-Hsing Chou
- Department of Soil Environmental Science, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan
| | - Edmundo Barrios
- Tropical Soil Biology and Fertility Institute of Centro Internacional de Agricultura Tropical (TSBF-CIAT), A.A. 6713, Cali, Colombia
| | - Sergio M de Faria
- EMBRAPA-Agrobiologia, km 47, Seropedica, 23851-970 Rio de Janeiro, Brazil
| | | | - Shih-Yi Sheu
- Department of Marine Biotechnology, National Kaohsiung Marine University, Kaohsiung, Taiwan
| | - Janet I Sprent
- School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
| | - Peter Vandamme
- Laboratorium voor Microbiologie, Universiteit Gent, K. L. Ledeganckstraat 35, B-9000 Gent, Belgium
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23
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Abstract
rRNA gene sequencing and PCR assays indicated that 215 isolates of root nodule bacteria from two Mimosa species at three sites in Costa Rica belonged to the genera Burkholderia, Cupriavidus, and Rhizobium. This is the first report of Cupriavidus sp. nodule symbionts for Mimosa populations within their native geographic range in the neotropics. Burkholderia spp. predominated among samples from Mimosa pigra (86% of isolates), while there was a more even distribution of Cupriavidus, Burkholderia, and Rhizobium spp. on Mimosa pudica (38, 37, and 25% of isolates, respectively). All Cupriavidus and Burkholderia genotypes tested formed root nodules and fixed nitrogen on both M. pigra and M. pudica, and sequencing of rRNA genes in strains reisolated from nodules verified identity with inoculant strains. Inoculation tests further indicated that both Cupriavidus and Burkholderia spp. resulted in significantly higher plant growth and nodule nitrogenase activity (as measured by acetylene reduction assays) relative to plant performance with strains of Rhizobium. Given the prevalence of Burkholderia and Cupriavidus spp. on these Mimosa legumes and the widespread distribution of these plants both within and outside the neotropics, it is likely that both beta-proteobacterial genera are more ubiquitous as root nodule symbionts than previously believed.
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Affiliation(s)
- Craig F Barrett
- Department of Biological Sciences, State University of New York, Binghamton, NY 13902, USA
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24
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Rossard S, Luini E, Pérault JM, Bonmort J, Roblin G. Early changes in membrane permeability, production of oxidative burst and modification of PAL activity induced by ergosterol in cotyledons of Mimosa pudica. J Exp Bot 2006; 57:1245-52. [PMID: 16510520 DOI: 10.1093/jxb/erj090] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Ergosterol (a fungal membrane component) was shown to induce transient influx of protons and membrane hyperpolarization in cotyledonary cells of Mimosa pudica L. By contrast, chitosan (a fungal wall component with known elicitor properties) triggered membrane depolarization. In the processes induced by ergosterol, a specific desensitization was observed, since cells did not react to a second ergosterol application but did respond to a chitosan treatment. This comparative study correspondingly shows that ergosterol and chitosan were perceived in a distinct manner by plant cells. Generation of O2*-, visualized by infiltration with nitroblue tetrazolium, was displayed in organs treated with ergosterol and chitosan. This AOS production was preceded by an increase in activity of NADPH oxidase measured in protein extracts of treated cotyledons. In all the previously described processes, cholesterol had no effect, thereby indicating that ergosterol specifically induced these physiological changes known to participate in the reaction chain activated by characteristic elicitors. Contrary to chitosan, ergosterol did not greatly activate secondary metabolism as shown by the small change in content of free phenolics and by the low modification in activity of PAL, the key enzyme of this metabolic pathway. Therefore, future studies have to clarify the signalling cascade triggered by ergosterol recognition.
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Affiliation(s)
- Stéphanie Rossard
- Laboratoire de Biochimie, Physiologie et Biologie Moléculaire Végétales, UMR CNRS 6161, University of Poitiers, 40, Avenue du Recteur Pineau, F-86022 Poitiers, France
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25
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Chen WM, de Faria SM, Straliotto R, Pitard RM, Simões-Araùjo JL, Chou JH, Chou YJ, Barrios E, Prescott AR, Elliott GN, Sprent JI, Young JPW, James EK. Proof that Burkholderia strains form effective symbioses with legumes: a study of novel Mimosa-nodulating strains from South America. Appl Environ Microbiol 2005; 71:7461-71. [PMID: 16269788 PMCID: PMC1287612 DOI: 10.1128/aem.71.11.7461-7471.2005] [Citation(s) in RCA: 141] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Twenty Mimosa-nodulating bacterial strains from Brazil and Venezuela, together with eight reference Mimosa-nodulating rhizobial strains and two other beta-rhizobial strains, were examined by amplified rRNA gene restriction analysis. They fell into 16 patterns and formed a single cluster together with the known beta-rhizobia, Burkholderia caribensis, Burkholderia phymatum, and Burkholderia tuberum. The 16S rRNA gene sequences of 15 of the 20 strains were determined, and all were shown to belong to the genus Burkholderia; four distinct clusters could be discerned, with strains isolated from the same host species usually clustering very closely. Five of the strains (MAP3-5, Br3407, Br3454, Br3461, and Br3469) were selected for further studies of the symbiosis-related genes nodA, the NodD-dependent regulatory consensus sequences (nod box), and nifH. The nodA and nifH sequences were very close to each other and to those of B. phymatum STM815, B. caribensis TJ182, and Cupriavidus taiwanensis LMG19424 but were relatively distant from those of B. tuberum STM678. In addition to nodulating their original hosts, all five strains could also nodulate other Mimosa spp., and all produced nodules on Mimosa pudica that had nitrogenase (acetylene reduction) activities and structures typical of effective N2-fixing symbioses. Finally, both wild-type and green fluorescent protein-expressing transconjugant strains of Br3461 and MAP3-5 produced N2-fixing nodules on their original hosts, Mimosa bimucronata (Br3461) and Mimosa pigra (MAP3-5), and hence this confirms strongly that Burkholderia strains can form effective symbioses with legumes.
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Affiliation(s)
- Wen-Ming Chen
- Laboratory of Microbiology, Department of Seafood Science, National Kaohsiung Marine University, Kaohsiung City, Taiwan
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26
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Abstract
A total of 191 rhizobial isolates from the root nodules of three geographically separate populations of the invasive plant Mimosa pigra in Taiwan were examined using amplified rDNA restriction analysis, 16S rDNA sequences, protein profiles and ELISA. Of these, 96% were identified as Burkholderia and 4% as Cupriavidus taiwanensis. The symbiosis-essential genes nodA and nifH were present in two strains of Burkholderia (PAS44 and PTK47), and in one of C. taiwanensis (PAS15). All three could nodulate M. pigra. Light and electron microscopy studies with a green fluorescent protein transconjugant variant of strain PAS44 showed the presence of fluorescent bacteroids in M. pigra nodules. These bacteroids expressed the nifH protein, hence this is the first confirmation that Burkholderia is a genuine symbiont of legume nodules. The predominance of Burkholderia in Taiwanese M. pigra suggests that this species may have brought its symbionts from its native South America, rather than entering into association with the Taiwanese Mimosa symbiont C. taiwanensis which so successfully nodulates Mimosa pudica and Mimosa diplotricha.
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Affiliation(s)
- Wen-Ming Chen
- Department of Seafood Science, National Kaohsiung Marine University, 142 Hai-Chuan Road, Nan-Tzu, Kaohsiung City 811, Taiwan.
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27
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Camargo-Ricalde SL, Esperón-Rodríguez M. [Effect of the spatial and seasonal soil heterogeneity over arbuscular mycorrhizal fungal spore abundance in the semi-arid valley of Tehuacán-Cuicatlán, Mexico]. REV BIOL TROP 2005; 53:339-52. [PMID: 17354445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023] Open
Abstract
Recent studies have shown that some species of Mimosa (Leguminosae-Mimosoideae) create resource islands (RI), rich in soil organic matter and nutrients, as well as in arbuscular mycorrhyzal fungal (AMF) spores, in the semi-arid Valley of Tehuacán-Cuicatlán. The relevance of this fact is that arid and semi-arid regions are characterized by low fertility soils and scarce precipitation, limiting plant species growth and development; this explains why the presence of AM fungi may be advantageous for mycorrhizal desert plants. Fluctuations in AMF spore numbers could be related to environmental, seasonal and soil factors which affect AMF sporulation, in addition to the life history of the host plant. The aim of this study was to asses the impact of spatial (resource islands vs open areas, OA) and seasonal (wet season vs start of dry season vs dry season) soil heterogeneity in the distribution and abundance of AMF spores in four different study sites within the Valley. We registered AMF spores in the 120 soil samples examined. Significant differences in the number of AMF spores were reported in the soil below the canopy of Mimosa species (RI) comparing with OA (RI > OA), and between Mimosa RI themselves when comparing along a soil gradient within the RI (soil near the trunk > soil below the middle of the canopy > soil in the margin of the canopy > OA); however, there were no significant differences between the soil closest to the trunk vs middle, and margin 's OA. Finally, more spores were reported in the soil collected during the wet season than during the dry season (wet > start of dry > dry). Therefore, the distribution of AMF spores is affected by spatial and seasonal soil heterogeneity. This study points out the relevance of Mimosa RI as AMF spore reservoirs and the potential importance of AM fungi for plant species survivorship and establishment in semi-arid regions. AM fungi have recently been recognized as an important factor determining plant species diversity in arid and temperate ecosystems.
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Affiliation(s)
- Sara Lucía Camargo-Ricalde
- Universidad Autónoma Metropolitana-lztapalapa, División de Ciencias Biológicas y de la Salud, Departamento de Biologia, Apdo. Postal 55-535. 09340 México. D. F.
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28
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Chen WM, Chang JS, Wu CH, Chang SC. Characterization of phenol and trichloroethene degradation by the rhizobium Ralstonia taiwanensis. Res Microbiol 2005; 155:672-80. [PMID: 15380556 DOI: 10.1016/j.resmic.2004.05.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2004] [Accepted: 05/10/2004] [Indexed: 11/18/2022]
Abstract
Ralstonia taiwanensis is a root nodule bacterium originally isolated from Mimosa sp. in southern Taiwan. Some strains of R. taiwanensis demonstrated the ability to grow on medium containing phenol as the sole carbon source, especially strain TJ86, which was able to survive and grow at phenol concentrations of up to 900 mg/l. The dependence of the phenol degradation rate on the phenol concentration can be described by Haldane's model with a low KS (the apparent half-saturation constant) of 5.46 microM and an extremely high KSI (the apparent inhibition constant) 9075 microM. The optimal phenol degradation rate was 61 micromol/min/g cell, which occurred at a phenol concentration of 228 microM. The phenol-limited growth kinetics of TJ86 by Andrews's model also followed a similar trend to that of phenol degradation, indicating the close links between phenol degradation and cell growth. Strain TJ86 also achieved 100 and 40% degradation for soil samples amended with 500 and 1000 microg phenol/g soil (dry weight) within 9 days, respectively. Moreover, strain TJ86 cometabolically degraded trichloroethene (TCE) after being cultivated with media containing phenol or m-cresol as the carbon substrate. The sequence of the large-subunit phenol hydroxylase (LmPH) gene obtained from TJ86 displayed high homology to that of other phenol-utilizing bacteria. Results from kinetic and phylogenetic analyses suggest that strain TJ86 most likely belongs to group I phenol-degrading bacteria which are considered to be efficient TCE degraders. It is proposed that the symbiotic relationship between rhizobia R. taiwanensis and its host plant Mimosa sp. may have the potential for rhizoremediation of aquatic and soil environments contaminated by phenol and TCE.
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Affiliation(s)
- Wen-Ming Chen
- Department of Seafood Science, National Kaohsiung Marine University, Nan-Tzu, Kaohsiung City 811, Hai-Chuan Rd. No. 142, Taiwan.
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Verma SC, Chowdhury SP, Tripathi AK. Phylogeny based on 16S rDNA andnifHsequences ofRalstonia taiwanensisstrains isolated from nitrogen-fixing nodules ofMimosa pudica, in India. Can J Microbiol 2004; 50:313-22. [PMID: 15213739 DOI: 10.1139/w04-020] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Bacterial symbionts present in the indeterminate-type nitrogen (N)-fixing nodules of Mimosa pudica grown in North and South India showed maximum similarity to Ralstonia taiwanensis on the basis of carbon-source utilization patterns and 16S rDNA sequence. Isolates from the nodules of M. pudica from North India and South India showed identical ARDRA (Amplified Ribosomal DNA Restriction Analysis) patterns with Sau3AI and RsaI, but AluI revealed dimorphy between the North Indian and South Indian isolates. Alignment of 16S rDNA sequences revealed similarity of North Indian isolates with an R. taiwanensis strain isolated from M. pudica in Taiwan, whereas South Indian isolates showed closer relatedness with the isolates from Mimosa diplotricha. Alignment of nifH sequences from both North Indian and South Indian isolates with that of the related isolates revealed their closer affinity to α-rhizobia, suggesting that nif genes in the β-rhizobia might have been acquired from α-rhizobia via lateral transfer during co-occupancy of nodules by α-rhizobia and progenitors of R. taiwanensis, members of the β-subclass of Proteobacteria. Immunological cross-reaction of the bacteroid preparation of M. pudica nodules showed strong a positive signal with anti-dinitrogenase reductase antibody, whereas a weak positive cross-reaction was observed with free-living R. taiwanensis grown microaerobically in minimal medium with and without NH4Cl. In spite of the expression of dinitrogenase reductase under free-living conditions, acetylene reduction was not observed under N-free conditions even after prolonged incubation.Key words: symbiotic nitrogen fixation, Mimosa pudica, rhizobia, phylogeny, 16S rDNA, nifH, Ralstonia taiwanensis.
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MESH Headings
- Bacterial Typing Techniques
- Carbohydrate Metabolism
- Cluster Analysis
- DNA Fingerprinting
- DNA, Bacterial/chemistry
- DNA, Bacterial/isolation & purification
- DNA, Ribosomal/analysis
- DNA, Ribosomal/chemistry
- DNA, Ribosomal/isolation & purification
- Gene Transfer, Horizontal
- Genes, rRNA
- India
- Mimosa/microbiology
- Molecular Sequence Data
- Nitrogen Fixation/genetics
- Oxidoreductases/genetics
- Oxidoreductases/immunology
- Oxidoreductases/metabolism
- Phylogeny
- RNA, Ribosomal, 16S/genetics
- Ralstonia/classification
- Ralstonia/genetics
- Ralstonia/isolation & purification
- Sequence Analysis, DNA
- Sequence Homology
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Affiliation(s)
- Subhash Chandra Verma
- School of Biotechnology, Faculty of Science, Banaras Hindu University, Varanasi, India
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Salgado CG, da Silva JP, Diniz JAP, da Silva MB, da Costa PF, Teixeira C, Salgado UI. Isolation of Fonsecaea pedrosoi from thorns of Mimosa pudica, a probable natural source of chromoblastomycosis. Rev Inst Med Trop Sao Paulo 2004; 46:33-6. [PMID: 15057332 DOI: 10.1590/s0036-46652004000100006] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report the isolation of Fonsecaea pedrosoi from thorns of the plant Mimosa pudica L. at the place of infection identified by one of our patients. Clinical diagnosis of chromoblastomycosis was established by direct microscopic examination and cultures from the patient's lesion. The same species was isolated from the patient and from the plant. Scanning electron microscopy of the surface of the thorns showed the characteristic conidial arrangement of F. pedrosoi. These data indicate that M. pudica could be a natural source of infection for the fungus F. pedrosoi.
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31
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Abstract
Following the initial discovery of two legume-nodulating Burkholderia strains (L. Moulin, A. Munive, B. Dreyfus, and C. Boivin-Masson, Nature 411:948-950, 2001), we identified as nitrogen-fixing legume symbionts at least 50 different strains of Burkholderia caribensis and Ralstonia taiwanensis, all belonging to the beta-subclass of proteobacteria, thus extending the phylogenetic diversity of the rhizobia. R. taiwanensis was found to represent 93% of the Mimosa isolates in Taiwan, indicating that beta-proteobacteria can be the specific symbionts of a legume. The nod genes of rhizobial beta-proteobacteria (beta-rhizobia) are very similar to those of rhizobia from the alpha-subclass (alpha-rhizobia), strongly supporting the hypothesis of the unique origin of common nod genes. The beta-rhizobial nod genes are located on a 0.5-Mb plasmid, together with the nifH gene, in R. taiwanensis and Burkholderia phymatum. Phylogenetic analysis of available nodA gene sequences clustered beta-rhizobial sequences in two nodA lineages intertwined with alpha-rhizobial sequences. On the other hand, the beta-rhizobia were grouped with free-living nitrogen-fixing beta-proteobacteria on the basis of the nifH phylogenetic tree. These findings suggest that beta-rhizobia evolved from diazotrophs through multiple lateral nod gene transfers.
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Affiliation(s)
- Wen-Ming Chen
- Laboratory of Microbiology, Department of Seafood Science, National Kaohsiung Institute of Marine Technology, Kaohsiung City 811, Taiwan
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32
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Chen WM, James EK, Prescott AR, Kierans M, Sprent JI. Nodulation of Mimosa spp. by the beta-proteobacterium Ralstonia taiwanensis. Mol Plant Microbe Interact 2003; 16:1051-61. [PMID: 14651338 DOI: 10.1094/mpmi.2003.16.12.1051] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Several beta-proteobacteria have been isolated from legume root nodules and some of these are thought to be capable of nodulating and fixing N2. However, in no case has there been detailed studies confirming that they are the active symbionts. Here, Ralstonia taiwanensis LMG19424, which was originally isolated from Mimosa pudica nodules, was transformed to carry the green fluorescent protein (gfp) reporter gene before being used to inoculate axenically-grown seedlings of M. pudica and M. diplotricha. Plants were harvested at various intervals for 56 days after inoculation, then examined for evidence of infection and nodule formation. Nodulation of both Mimosa spp. was abundant, and acetylene reduction assays confirmed that nodules had nitrogenase activity. Confocal laser scanning microscopy (CLSM) showed that fresh M. pudica nodules with nitrogenase activity had infected cells containing bacteroids expressing gfp. In parallel, fixed and embedded nodules from both Mimosa spp. were sectioned for light and electron microscopy, followed by immunogold labeling with antibodies raised against gfp and nitrogenase Fe (nifH) protein. Significant immunolabeling with these antibodies confirmed that R. taiwanensis LMG19424 is an effective N2-fixing symbiont of Mimosa spp. Both species were infected via root hairs and, in all respects, the nodule ontogeny and development was similar to that described for other mimosoid legumes. The nodules were indeterminate with a persistent meristem, an invasion zone containing host cells being invaded via prominent infection threads, and an N2-fixing zone with infected cells containing membrane-bound symbiosomes.
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Affiliation(s)
- Wen-Ming Chen
- Laboratory of Microbiology, Department of Seafood Science, National Kaohsiung Institute of Marine Technology, Kaohsiung City 811, Taiwan
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33
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Camargo-Ricalde SL, Dhillion SS. Endemic Mimosa species can serve as mycorrhizal "resource islands" within semiarid communities of the Tehuacán-Cuicatlán Valley, Mexico. Mycorrhiza 2003; 13:129-36. [PMID: 12836080 DOI: 10.1007/s00572-002-0206-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2002] [Accepted: 09/10/2002] [Indexed: 05/24/2023]
Abstract
This paper explores if Mimosa species (Fabaceae-Mimosoideae) can serve as arbuscular mycorrhizal (AM) and nutrient "resource islands" in six plant communities in the semiarid valley of Tehuacán-Cuicatlán, Mexico. Spatial heterogeneity related to the occurrence of Mimosa species results in temporal differences in AM-fungal spore numbers and soil nutrients. A higher number of AM-fungal spores were found in the soil below the canopies of six endemic Mimosa species than in the soil from non-vegetated areas. For four species, Mimosa adenantheroides, Mimosa calcicola, Mimosa luisana and Mimosa polyantha, the soil below their canopies had more AM-fungal spores than the soil in non-vegetated areas during the wet season than during the dry season. Two species, Mimosa lacerata and Mimosa texana var. filipes, however, had more spores under their canopies during the dry season than during the wet season. Although physical differences are present within and between sites, in general the soil below the canopies of Mimosa species had significantly higher nutrient levels than the soil from non-vegetated areas. Mimosa species thus form "resource islands" that are not only rich in nutrients but also in mycorrhizal propagules. Mimosa species can serve as mycorrhizal "resource islands" by directly affecting AM-fungal spore dynamics and/or by serving as spore-traps. A range of plants associated with Mimosa species may benefit from the higher number of AM propagules. We believe that the use of Mimosa resource islands as an option for biodiversity conservation and for land restoration ought to be considered in the Valley.
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Affiliation(s)
- Sara Lucía Camargo-Ricalde
- Agricultural University of Norway, Department of Biology and Nature Conservation, P.O. Box 5014, 1432, As, Norway.
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