1
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Garneau L, Beauregard PB, Roy S. Neighbours in nodules: the interactions between Frankia sp. ACN10a and non- Frankia nodular endophytes of alder. Can J Microbiol 2023; 69:88-102. [PMID: 36288608 DOI: 10.1139/cjm-2022-0074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
In the present study, we report the in vitro interactions between Frankia sp. ACN10a and non-Frankia nodular endophytes (NFNE) isolated from alder. The supernatant of NFNE grown in nitrogen-replete medium had neutral or negative effects on Frankia growth; none had a stimulatory effect. Inhibitory effects were observed for supernatants of some NFNE, notably Micromonospora, Pseudomonas, Serratia and Stenotrophomonas isolates. However, some NFNE-Frankia coculture supernatants could stimulate Frankia growth when used as a culture medium supplement. This was observed for supernatants of Frankia cocultured with Microvirga and Streptomyces isolates. In nitrogen-limited conditions, cocultures of Frankia with some NFNE, including some rhizobia and Cytobacillus, resulted in higher total biomass than Frankia-only cultures, suggesting cooperation, while other NFNE were strongly antagonistic. Microscopic observation of cocultures also revealed compromised Frankia membrane integrity, and some differentiation into stress resistance-associated morphotypes such as sporangia and reproductive torulose hyphae (RTH). Furthermore, the coculture of Frankia with Serratia sp. isolates resulted in higher concentrations of the auxinic plant hormone indole-3-acetic acid and related indolic compounds in the culture supernatant. This study sheds new light on the breadth of microbial interactions that occur amongst bacteria that inhabit the understudied ecological niche of the alder nodule.
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Affiliation(s)
- Louis Garneau
- Centre SÈVE, Département de biologie, Faculté des Sciences, Université de Sherbrooke, 2500 boulevard de l'Université, Sherbrooke, Québec, Canada, J1K 2R1
| | - Pascale B Beauregard
- Centre SÈVE, Département de biologie, Faculté des Sciences, Université de Sherbrooke, 2500 boulevard de l'Université, Sherbrooke, Québec, Canada, J1K 2R1
| | - Sébastien Roy
- Centre SÈVE, Département de biologie, Faculté des Sciences, Université de Sherbrooke, 2500 boulevard de l'Université, Sherbrooke, Québec, Canada, J1K 2R1
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Garneau L, Beauregard PB, Roy S. Deciphering the role of non- Frankia nodular endophytes in alder through in vitro and genomic characterization. Can J Microbiol 2023; 69:72-87. [PMID: 36288604 DOI: 10.1139/cjm-2022-0073] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Endophytic bacterial populations are well-positioned to provide benefits to their host plants such as nutrient acquisition and plant hormone level manipulation. Actinorhizal plants such as alders are well known for their microbial symbioses that allow them to colonize harsh environments whether natural or anthropized. Although the nitrogen-fixing actinobacterium Frankia sp. is the main endophyte found in alder root nodules, other bacterial genera, whose roles remain poorly defined, inhabit this niche. In this study, we isolated a diverse panel of non-Frankia nodular endophytes (NFNE). Some NFNE were isolated from alders grown from surface-sterilized seeds and maintained in sterile conditions, suggesting these may have been seed-borne. In vitro testing of 24 NFNE revealed some possessed putative plant growth promotion traits. Their genomes were also sequenced to identify genes related to plant growth promotion traits. This study highlights the complexity of the alder nodular microbial community. It paves the way for further understanding of the biology of nodules and could help improve land reclamation practices that involve alders.
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Affiliation(s)
- Louis Garneau
- Centre SÈVE, Département de biologie, Faculté des Sciences, Université de Sherbrooke, 2500 boulevard de l'Université, Sherbrooke, Québec, Canada, J1K 2R1
| | - Pascale B Beauregard
- Centre SÈVE, Département de biologie, Faculté des Sciences, Université de Sherbrooke, 2500 boulevard de l'Université, Sherbrooke, Québec, Canada, J1K 2R1
| | - Sébastien Roy
- Centre SÈVE, Département de biologie, Faculté des Sciences, Université de Sherbrooke, 2500 boulevard de l'Université, Sherbrooke, Québec, Canada, J1K 2R1
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3
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Pujic P, Alloisio N, Fournier P, Roche D, Sghaier H, Miotello G, Armengaud J, Berry AM, Normand P. Omics of the early molecular dialogue between Frankia alni and Alnus glutinosa and the cellulase synton. Environ Microbiol 2019; 21:3328-3345. [PMID: 30917411 DOI: 10.1111/1462-2920.14606] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 03/19/2019] [Accepted: 03/22/2019] [Indexed: 12/13/2022]
Abstract
The early Frankia-Alnus symbiotic molecular exchanges were analyzed in detail by protein and RNA omics. For this, Frankia cells were placed in the presence of Alnus roots but separated by a dialysis membrane for 64 h. The bacterial cells were then harvested and analyzed by high-throughput proteomics and transcriptomics (RNA-seq). The most upregulated gene clusters were found to be the potassium transporter operon kdp and an ABC transporter operon of uncharacterized function. The most upregulated proteins were found to be acyl dehydrogenases and the potassium transporter Kdp. These suggest a preadaptation to the impending stresses linked to the penetration into isotonic host tissues and a possible rearrangement of the membrane. Another cluster among the 60 most upregulated ones that comprised two cellulases and a cellulose synthase was conserved among the Frankia and other actinobacteria such as Streptomyces. Cellulase activity was detected on CMC all along the length of the root but not away from it. Frankia alni ACN14a was found to be unable to respire or grow on glucose as sole carbon source. The cellulose synthase was found active at the tip of hyphae in response to Alnus root exudates, resulting in a calcofluor stained tip.
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Affiliation(s)
- Petar Pujic
- Ecologie Microbienne, Centre National de la Recherche Scientifique UMR 5557, Université de Lyon, Université Claude Bernard Lyon I, INRA, UMRA1418, Cedex 69622, Villeurbanne, France
| | - Nicole Alloisio
- Ecologie Microbienne, Centre National de la Recherche Scientifique UMR 5557, Université de Lyon, Université Claude Bernard Lyon I, INRA, UMRA1418, Cedex 69622, Villeurbanne, France
| | - Pascale Fournier
- Ecologie Microbienne, Centre National de la Recherche Scientifique UMR 5557, Université de Lyon, Université Claude Bernard Lyon I, INRA, UMRA1418, Cedex 69622, Villeurbanne, France
| | - David Roche
- LABGeM, Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Université Paris-Saclay, 91057 Evry, France
| | - Haitham Sghaier
- National Center for Nuclear Sciences and Technology, Sidi Thabet Technopark, Ariana, Tunisia
| | - Guylaine Miotello
- Laboratoire Innovations technologiques pour la Détection et le Diagnostic (Li2D), Service de Pharmacologie et Immunoanalyse (SPI), CEA, INRA, F-30207 Bagnols sur Cèze, France
| | - Jean Armengaud
- Laboratoire Innovations technologiques pour la Détection et le Diagnostic (Li2D), Service de Pharmacologie et Immunoanalyse (SPI), CEA, INRA, F-30207 Bagnols sur Cèze, France
| | - Alison M Berry
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA
| | - Philippe Normand
- Ecologie Microbienne, Centre National de la Recherche Scientifique UMR 5557, Université de Lyon, Université Claude Bernard Lyon I, INRA, UMRA1418, Cedex 69622, Villeurbanne, France
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Flandrois JP, Brochier-Armanet C, Briolay J, Abrouk D, Schwob G, Normand P, Fernandez MP. Taxonomic assignment of uncultured prokaryotes with long range PCR targeting the spectinomycin operon. Res Microbiol 2019; 170:280-287. [PMID: 31279085 DOI: 10.1016/j.resmic.2019.06.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 05/02/2019] [Accepted: 06/25/2019] [Indexed: 11/28/2022]
Abstract
The taxonomic assignment of uncultured prokaryotes to known taxa is a major challenge in microbial systematics. This relies usually on the phylogenetic analysis of the ribosomal small subunit RNA or a few housekeeping genes. Recent works have disclosed ribosomal proteins as valuable markers for systematics and, due to the boom in complete genome sequencing, their use has become widespread. Yet, in the case of uncultured strains, for which complete genome sequences cannot be easily obtained, sequencing many markers is complicated and time consuming. Taking the advantage of the organization of ribosomal protein coding genes in large gene clusters, we amplified a 32 kb conserved region encompassing the spectinomycin (spc) operon using long range PCR from isolated and from uncultured nodular endophytic Frankia strains. The phylogenetic analysis of the 27 ribosomal protein genes contained in this region provided a robust phylogenetic tree consistent with phylogenies based on larger set of markers, indicating that this subset of ribosomal proteins contains enough phylogenetic signal to address systematic issues. This work shows that using long range PCR could break down the barrier preventing the use of ribosomal proteins as phylogenetic markers when complete genome sequences cannot be easily obtained.
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Affiliation(s)
- Jean-Pierre Flandrois
- Université de Lyon, Université Lyon 1, CNRS, UMR5558, Laboratoire de Biométrie et Biologie Évolutive, F-69622, Villeurbanne, France.
| | - Céline Brochier-Armanet
- Université de Lyon, Université Lyon 1, CNRS, UMR5558, Laboratoire de Biométrie et Biologie Évolutive, F-69622, Villeurbanne, France.
| | - Jérôme Briolay
- Université de Lyon, Université Lyon 1, DTAMB, Villeurbanne, France.
| | - Danis Abrouk
- Université de Lyon, Université Lyon 1, CNRS, UMR5557, INRA, UMR1418, Laboratoire d'Écologie Microbienne, Villeurbanne, France.
| | - Guillaume Schwob
- Université de Lyon, Université Lyon 1, CNRS, UMR5557, INRA, UMR1418, Laboratoire d'Écologie Microbienne, Villeurbanne, France.
| | - Philippe Normand
- Université de Lyon, Université Lyon 1, CNRS, UMR5557, INRA, UMR1418, Laboratoire d'Écologie Microbienne, Villeurbanne, France.
| | - Maria P Fernandez
- Université de Lyon, Université Lyon 1, CNRS, UMR5557, INRA, UMR1418, Laboratoire d'Écologie Microbienne, Villeurbanne, France.
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Béthencourt L, Boubakri H, Taib N, Normand P, Armengaud J, Fournier P, Brochier-Armanet C, Herrera-Belaroussi A. Comparative genomics and proteogenomics highlight key molecular players involved in Frankia sporulation. Res Microbiol 2019; 170:202-213. [PMID: 31018159 DOI: 10.1016/j.resmic.2019.04.002] [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: 11/30/2018] [Revised: 04/15/2019] [Accepted: 04/16/2019] [Indexed: 10/27/2022]
Abstract
Sporulation is a microbial adaptive strategy to resist inhospitable conditions for vegetative growth and to disperse to colonise more favourable environments. This microbial trait is widespread in Actinobacteria. Among them, Frankia strains are able to differentiate sporangia in pure culture, while others can sporulate even when in symbiosis with sporulation occurring within host cells. The molecular determinants controlling Frankia sporulation have not been yet described. In order to highlight, for the first time, the molecular players potentially involved in Frankia sporulation, we conducted (i) a comparison of protein contents between Frankia spores and hyphae and (ii) a comparative genomic analysis of Frankia proteomes with sporulating and non-sporulating Actinobacteria. Among the main results, glycogen-metabolism related proteins, as well as oxidative stress response and protease-like proteins were overdetected in hyphae, recalling lytic processes that allow Streptomyces cells to erect sporogenic hyphae. Several genes encoding transcriptional regulators, including GntR-like, appeared up-regulated in spores, as well as tyrosinase, suggesting their potential role in mature spore metabolism. Finally, our results highlighted new proteins potentially involved in Frankia sporulation, including a pyrophosphate-energized proton pump and YaaT, described as involved in the phosphorelay allowing sporulation in Bacillus subtilis, leading us to discuss the role of a phosphorelay in Frankia sporulation.
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Affiliation(s)
- Lorine Béthencourt
- Écologie Microbienne, Centre National de la Recherche Scientifique UMR 5557, Université de Lyon, Université Claude Bernard Lyon I, INRA, UMR 1418, Villeurbanne, 69622 Cedex, France
| | - Hasna Boubakri
- Écologie Microbienne, Centre National de la Recherche Scientifique UMR 5557, Université de Lyon, Université Claude Bernard Lyon I, INRA, UMR 1418, Villeurbanne, 69622 Cedex, France
| | - Najwa Taib
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, UMR5558, Laboratoire de Biométrie et Biologie Évolutive, 43 bd du 11 novembre 1918, F-69622, Villeurbanne, France
| | - Philippe Normand
- Écologie Microbienne, Centre National de la Recherche Scientifique UMR 5557, Université de Lyon, Université Claude Bernard Lyon I, INRA, UMR 1418, Villeurbanne, 69622 Cedex, France
| | - Jean Armengaud
- Laboratoire Innovations Technologiques pour la Détection et le Diagnostic (Li2D), Service de Pharmacologie et Immunoanalyse (SPI), CEA, INRA, Bagnols sur Cèze, F-30207, France
| | - Pascale Fournier
- Écologie Microbienne, Centre National de la Recherche Scientifique UMR 5557, Université de Lyon, Université Claude Bernard Lyon I, INRA, UMR 1418, Villeurbanne, 69622 Cedex, France
| | - Céline Brochier-Armanet
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, UMR5558, Laboratoire de Biométrie et Biologie Évolutive, 43 bd du 11 novembre 1918, F-69622, Villeurbanne, France
| | - Aude Herrera-Belaroussi
- Écologie Microbienne, Centre National de la Recherche Scientifique UMR 5557, Université de Lyon, Université Claude Bernard Lyon I, INRA, UMR 1418, Villeurbanne, 69622 Cedex, France.
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Kucho KI, Tobita H, Ikebe M, Shibata M, Imaya A, Kabeya D, Saitoh T, Okamoto T, Ono K, Morisada K. Frankia communities at revegetating sites in Mt. Ontake, Japan. Antonie van Leeuwenhoek 2018; 112:91-99. [PMID: 30155663 DOI: 10.1007/s10482-018-1151-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 08/25/2018] [Indexed: 11/24/2022]
Abstract
In 1984 at Mt. Ontake in Japan, an earthquake caused a devastating landslide, and as a result, the vegetation on the south slope of the mountain was completely eliminated. In higher elevation (2000 m) areas, revegetation has not yet been completed even 30 years after the landslide. Revegetation progress throughout the area was heterogeneous. In the partially revegetated areas, actinorhizal plant species such as Alnus maximowiczii and Alnus matsumurae have been found. In the present study, we investigated the Frankia communities in the higher-elevation area using sequence analysis of the amplified nifH (dinitrogenase reductase) gene from nodule and soil samples collected in the disturbed region, undisturbed forest, and in the boundary between the disturbed region and the undisturbed forest. Phylogenetic analysis of partial nifH sequences revealed the presence of six clusters, each of which consisted of highly similar (> 99%) sequences. Four clusters showed significant sequence similarity to Frankia (three Alnus- and a Casuarina-infecting strains). Diversity in the Frankia community was relatively low-only one or two clusters were detected in a site. At most of the sampling sites, a dominant cluster in a nodule coincided with that in rhizosphere soil, indicating that community structure in the rhizosphere is a primary factor that determines occupancy in a nodule. No significant difference in community structure was observed between plant species. Diversity in the Frankia community varied depending on revegetation progress. Cluster A, which was the most dominant in the disturbed region, was likely to have invaded from undisturbed forest.
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Affiliation(s)
- Ken-Ichi Kucho
- Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima, 890-0065, Japan.
| | - Hiroyuki Tobita
- Department of Plant Ecology, Forestry and Forest Products Research Institute, Matsunosato 1, Tsukuba, 305-8687, Japan
| | - Mari Ikebe
- Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima, 890-0065, Japan
| | - Mitsue Shibata
- Department of Forest Vegetation, Forestry and Forest Products Research Institute, Matsunosato 1, Tsukuba, 305-8687, Japan
| | - Akihiro Imaya
- Forestry Division, Japan International Research Center for Agricultural Sciences, 1-1 Ohwashi, Tsukuba, Ibaraki, 305-8686, Japan
| | - Daisuke Kabeya
- Department of Plant Ecology, Forestry and Forest Products Research Institute, Matsunosato 1, Tsukuba, 305-8687, Japan
| | - Tomoyuki Saitoh
- Tohoku Research Center, Forestry and Forest Products Research Institute, 2-25 Nabeyashiki, Shimokuriyagawa, Morioka, Iwate, 020-0123, Japan
| | - Toru Okamoto
- Kansai Research Center, Forestry and Forest Products Research Institute, 68 Nagaikyutaroh, Momoyama, Fushimi, Kyoto, 612-0855, Japan
| | - Kenji Ono
- Tohoku Research Center, Forestry and Forest Products Research Institute, 2-25 Nabeyashiki, Shimokuriyagawa, Morioka, Iwate, 020-0123, Japan
| | - Kazuhito Morisada
- Department of Forest Soil, Forestry and Forest Products Research Institute, Matsunosato 1, Tsukuba, 305-8687, Japan
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Coba de la Peña T, Fedorova E, Pueyo JJ, Lucas MM. The Symbiosome: Legume and Rhizobia Co-evolution toward a Nitrogen-Fixing Organelle? FRONTIERS IN PLANT SCIENCE 2018; 8:2229. [PMID: 29403508 PMCID: PMC5786577 DOI: 10.3389/fpls.2017.02229] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 12/19/2017] [Indexed: 05/21/2023]
Abstract
In legume nodules, symbiosomes containing endosymbiotic rhizobial bacteria act as temporary plant organelles that are responsible for nitrogen fixation, these bacteria develop mutual metabolic dependence with the host legume. In most legumes, the rhizobia infect post-mitotic cells that have lost their ability to divide, although in some nodules cells do maintain their mitotic capacity after infection. Here, we review what is currently known about legume symbiosomes from an evolutionary and developmental perspective, and in the context of the different interactions between diazotroph bacteria and eukaryotes. As a result, it can be concluded that the symbiosome possesses organelle-like characteristics due to its metabolic behavior, the composite origin and differentiation of its membrane, the retargeting of host cell proteins, the control of microsymbiont proliferation and differentiation by the host legume, and the cytoskeletal dynamics and symbiosome segregation during the division of rhizobia-infected cells. Different degrees of symbiosome evolution can be defined, specifically in relation to rhizobial infection and to the different types of nodule. Thus, our current understanding of the symbiosome suggests that it might be considered a nitrogen-fixing link in organelle evolution and that the distinct types of legume symbiosomes could represent different evolutionary stages toward the generation of a nitrogen-fixing organelle.
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Affiliation(s)
- Teodoro Coba de la Peña
- Instituto de Ciencias Agrarias ICA-CSIC, Madrid, Spain
- Centro de Estudios Avanzados en Zonas Áridas (CEAZA), La Serena, Chile
| | - Elena Fedorova
- Instituto de Ciencias Agrarias ICA-CSIC, Madrid, Spain
- K. A. Timiryazev Institute of Plant Physiology, Russian Academy of Science, Moscow, Russia
| | - José J Pueyo
- Instituto de Ciencias Agrarias ICA-CSIC, Madrid, Spain
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Kucho KI, Tamari D, Matsuyama S, Nabekura T, Tisa LS. Nitrogen Fixation Mutants of the Actinobacterium Frankia Casuarinae CcI3. Microbes Environ 2017; 32:344-351. [PMID: 29151446 PMCID: PMC5745019 DOI: 10.1264/jsme2.me17099] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 09/07/2017] [Indexed: 11/12/2022] Open
Abstract
Frankia is a representative genus of nitrogen-fixing (N2-fixing) actinobacteria; however, the molecular mechanisms underlying various phenomena such as the differentiation of a N2 fixation-specific structure (vesicle) and the regulation of N2 fixation (nif) genes, have yet to be elucidated in detail. In the present study, we screened hyphal fragments of Frankia casuarinae that were mutagenized by 1-methyl-3-nitro-1-nitrosoguanidine or gamma rays, and isolated 49 candidate N2 fixation mutants. Twelve of these mutants were selected for further study, and their abilities to grow in NH3-deficient (N-) liquid media and their rates of acetylene reduction activities were evaluated. Eleven mutant strains were confirmed to lack the ability to fix N2. Five mutant strains formed significantly reduced numbers of vesicles, while some failed to form large mature vesicles. These vesicle mutants also exhibited an aberrant hyphal morphology, suggesting a relationship between vesicle differentiation and hyphal branching. Ten mutants showed significant reductions in the expression of nifE, nifH, and nifV genes under N- conditions. The genome sequencing of eight mutants identified 20 to 400 mutations. Although mutant strains N3H4 and N6F4 shared a large number of mutations (108), most were unique to each strain. Mutant strain N7C9 had 3 mutations in the nifD and nifH genes that may result in the inability to fix N2. The other mutant strains did not have any mutations in any known N2 fixation-related genes, indicating that they are novel N2 fixation mutants.
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Affiliation(s)
- Ken-ichi Kucho
- Graduate School of Science and Engineering, Kagoshima University1–21–35 Korimoto, Kagoshima 890–0065Japan
| | - Daiki Tamari
- Graduate School of Science and Engineering, Kagoshima University1–21–35 Korimoto, Kagoshima 890–0065Japan
| | - Shintaro Matsuyama
- Graduate School of Science and Engineering, Kagoshima University1–21–35 Korimoto, Kagoshima 890–0065Japan
| | - Takeshi Nabekura
- Faculty of Science, Kagoshima University1–21–35 Korimoto, Kagoshima 890–0065Japan
| | - Louis S. Tisa
- Department of Molecular, Cellular, and Biomedical Sciences, University of New Hampshire289 Rudman Hall, 46 College Road, Durham, NH 03824–2617USA
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van der Meij A, Worsley SF, Hutchings MI, van Wezel GP. Chemical ecology of antibiotic production by actinomycetes. FEMS Microbiol Rev 2017; 41:392-416. [DOI: 10.1093/femsre/fux005] [Citation(s) in RCA: 220] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 02/02/2017] [Indexed: 12/13/2022] Open
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10
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Carro L, Pujic P, Alloisio N, Fournier P, Boubakri H, Poly F, Rey M, Heddi A, Normand P. Physiological effects of major up-regulated Alnus glutinosa peptides on Frankia sp. ACN14a. Microbiology (Reading) 2016; 162:1173-1184. [DOI: 10.1099/mic.0.000291] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Affiliation(s)
- Lorena Carro
- Université Lyon 1, Université de Lyon, CNRS, Ecologie Microbienne, UMR 5557, Villeurbanne, 69622 Cedex, France
| | - Petar Pujic
- Université Lyon 1, Université de Lyon, CNRS, Ecologie Microbienne, UMR 5557, Villeurbanne, 69622 Cedex, France
| | - Nicole Alloisio
- Université Lyon 1, Université de Lyon, CNRS, Ecologie Microbienne, UMR 5557, Villeurbanne, 69622 Cedex, France
| | - Pascale Fournier
- Université Lyon 1, Université de Lyon, CNRS, Ecologie Microbienne, UMR 5557, Villeurbanne, 69622 Cedex, France
| | - Hasna Boubakri
- Université Lyon 1, Université de Lyon, CNRS, Ecologie Microbienne, UMR 5557, Villeurbanne, 69622 Cedex, France
| | - Franck Poly
- Université Lyon 1, Université de Lyon, CNRS, Ecologie Microbienne, UMR 5557, Villeurbanne, 69622 Cedex, France
| | - Marjolaine Rey
- Université de Lyon, INSA Lyon, INRA, UMR203 BF2I, Biologie Fonctionnelle Insectes et Interactions, Villeurbanne, 69622 Cedex, France
| | - Abdelaziz Heddi
- Université de Lyon, INSA Lyon, INRA, UMR203 BF2I, Biologie Fonctionnelle Insectes et Interactions, Villeurbanne, 69622 Cedex, France
| | - Philippe Normand
- Université Lyon 1, Université de Lyon, CNRS, Ecologie Microbienne, UMR 5557, Villeurbanne, 69622 Cedex, France
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Barka EA, Vatsa P, Sanchez L, Gaveau-Vaillant N, Jacquard C, Meier-Kolthoff JP, Klenk HP, Clément C, Ouhdouch Y, van Wezel GP. Taxonomy, Physiology, and Natural Products of Actinobacteria. Microbiol Mol Biol Rev 2016; 80:1-43. [PMID: 26609051 PMCID: PMC4711186 DOI: 10.1128/mmbr.00019-15] [Citation(s) in RCA: 947] [Impact Index Per Article: 118.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Actinobacteria are Gram-positive bacteria with high G+C DNA content that constitute one of the largest bacterial phyla, and they are ubiquitously distributed in both aquatic and terrestrial ecosystems. Many Actinobacteria have a mycelial lifestyle and undergo complex morphological differentiation. They also have an extensive secondary metabolism and produce about two-thirds of all naturally derived antibiotics in current clinical use, as well as many anticancer, anthelmintic, and antifungal compounds. Consequently, these bacteria are of major importance for biotechnology, medicine, and agriculture. Actinobacteria play diverse roles in their associations with various higher organisms, since their members have adopted different lifestyles, and the phylum includes pathogens (notably, species of Corynebacterium, Mycobacterium, Nocardia, Propionibacterium, and Tropheryma), soil inhabitants (e.g., Micromonospora and Streptomyces species), plant commensals (e.g., Frankia spp.), and gastrointestinal commensals (Bifidobacterium spp.). Actinobacteria also play an important role as symbionts and as pathogens in plant-associated microbial communities. This review presents an update on the biology of this important bacterial phylum.
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Affiliation(s)
- Essaid Ait Barka
- Laboratoire de Stress, Défenses et Reproduction des Plantes, Unité de Recherche Vignes et Vins de Champagne, UFR Sciences, UPRES EA 4707, Université de Reims Champagne-Ardenne, Reims, France
| | - Parul Vatsa
- Laboratoire de Stress, Défenses et Reproduction des Plantes, Unité de Recherche Vignes et Vins de Champagne, UFR Sciences, UPRES EA 4707, Université de Reims Champagne-Ardenne, Reims, France
| | - Lisa Sanchez
- Laboratoire de Stress, Défenses et Reproduction des Plantes, Unité de Recherche Vignes et Vins de Champagne, UFR Sciences, UPRES EA 4707, Université de Reims Champagne-Ardenne, Reims, France
| | - Nathalie Gaveau-Vaillant
- Laboratoire de Stress, Défenses et Reproduction des Plantes, Unité de Recherche Vignes et Vins de Champagne, UFR Sciences, UPRES EA 4707, Université de Reims Champagne-Ardenne, Reims, France
| | - Cedric Jacquard
- Laboratoire de Stress, Défenses et Reproduction des Plantes, Unité de Recherche Vignes et Vins de Champagne, UFR Sciences, UPRES EA 4707, Université de Reims Champagne-Ardenne, Reims, France
| | | | - Hans-Peter Klenk
- School of Biology, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Christophe Clément
- Laboratoire de Stress, Défenses et Reproduction des Plantes, Unité de Recherche Vignes et Vins de Champagne, UFR Sciences, UPRES EA 4707, Université de Reims Champagne-Ardenne, Reims, France
| | - Yder Ouhdouch
- Faculté de Sciences Semlalia, Université Cadi Ayyad, Laboratoire de Biologie et de Biotechnologie des Microorganismes, Marrakesh, Morocco
| | - Gilles P van Wezel
- Molecular Biotechnology, Institute of Biology, Sylvius Laboratories, Leiden University, Leiden, The Netherlands
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Granqvist E, Sun J, Op den Camp R, Pujic P, Hill L, Normand P, Morris RJ, Downie JA, Geurts R, Oldroyd GED. Bacterial-induced calcium oscillations are common to nitrogen-fixing associations of nodulating legumes and nonlegumes. THE NEW PHYTOLOGIST 2015; 207:551-8. [PMID: 26010117 PMCID: PMC4736677 DOI: 10.1111/nph.13464] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 03/25/2015] [Indexed: 05/03/2023]
Abstract
Plants that form root-nodule symbioses are within a monophyletic 'nitrogen-fixing' clade and associated signalling processes are shared with the arbuscular mycorrhizal symbiosis. Central to symbiotic signalling are nuclear-associated oscillations in calcium ions (Ca(2+) ), occurring in the root hairs of several legume species in response to the rhizobial Nod factor signal. In this study we expanded the species analysed for activation of Ca(2+) oscillations, including nonleguminous species within the nitrogen-fixing clade. We showed that Ca(2+) oscillations are a common feature of legumes in their association with rhizobia, while Cercis, a non-nodulating legume, does not show Ca(2+) oscillations in response to Nod factors from Sinorhizobium fredii NGR234. Parasponia andersonii, a nonlegume that can associate with rhizobia, showed Nod factor-induced calcium oscillations to S. fredii NGR234 Nod factors, but its non-nodulating sister species, Trema tomentosa, did not. Also within the nitrogen-fixing clade are actinorhizal species that associate with Frankia bacteria and we showed that Alnus glutinosa induces Ca(2+) oscillations in root hairs in response to exudates from Frankia alni, but not to S. fredii NGR234 Nod factors. We conclude that the ability to mount Ca(2+) oscillations in response to symbiotic bacteria is a common feature of nodulating species within the nitrogen-fixing clade.
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Affiliation(s)
| | - Jongho Sun
- John Innes CentreNorwich Research ParkNorwichNR4 7UHUK
| | - Rik Op den Camp
- Department of Plant ScienceLaboratory of Molecular BiologyWageningen UniversityDroevendaalsesteeg 16708PBWageningenthe Netherlands
| | - Petar Pujic
- Ecologie MicrobienneCentre National de la Recherche Scientifique UMR 5557Université Lyon IUniversité LyonVilleurbanneFrance
| | - Lionel Hill
- John Innes CentreNorwich Research ParkNorwichNR4 7UHUK
| | - Philippe Normand
- Ecologie MicrobienneCentre National de la Recherche Scientifique UMR 5557Université Lyon IUniversité LyonVilleurbanneFrance
| | | | | | - Rene Geurts
- Department of Plant ScienceLaboratory of Molecular BiologyWageningen UniversityDroevendaalsesteeg 16708PBWageningenthe Netherlands
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Jami M, Ghanbari M, Kneifel W, Domig KJ. Phylogenetic diversity and biological activity of culturable Actinobacteria isolated from freshwater fish gut microbiota. Microbiol Res 2015; 175:6-15. [PMID: 25662514 DOI: 10.1016/j.micres.2015.01.009] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Revised: 01/14/2015] [Accepted: 01/18/2015] [Indexed: 01/25/2023]
Abstract
The diversity of Actinobacteria isolated from the gut microbiota of two freshwater fish species namely Schizothorax zarudnyi and Schizocypris altidorsalis was investigated employing classical cultivation techniques, repetitive sequence-based PCR (rep-PCR), partial and full 16S rDNA sequencing followed by phylogenetic analysis. A total of 277 isolates were cultured by applying three different agar media. Based on rep-PCR profile analysis a subset of 33 strains was selected for further phylogenetic investigations, antimicrobial activity testing and diversity analysis of secondary-metabolite biosynthetic genes. The identification based on 16S rRNA gene sequencing revealed that the isolates belong to eight genera distributed among six families. At the family level, 72% of the 277 isolates belong to the family Streptomycetaceae. Among the non-streptomycetes group, the most dominant group could be allocated to the family of Pseudonocardiaceae followed by the members of Micromonosporaceae. Phylogenetic analysis clearly showed that many of the isolates in the genera Streptomyces, Saccharomonospora, Micromonospora, Nocardiopsis, Arthrobacter, Kocuria, Microbacterium and Agromyces formed a single and distinct cluster with the type strains. Notably, there is no report so far about the occurrence of these Actinobacteria in the microbiota of freshwater fish. Of the 33 isolates, all the strains exhibited antibacterial activity against a set of tested human and fish pathogenic bacteria. Then, to study their associated potential capacity to synthesize diverse bioactive natural products, diversity of genes associated with secondary-metabolite biosynthesis including PKS I, PKS II, NRPS, the enzyme PhzE of the phenazine pathways, the enzyme dTGD of 6-deoxyhexoses glycosylation pathway, the enzyme Halo of halogenation pathway and the enzyme CYP in polyene polyketide biosynthesis were investigated among the isolates. All the strains possess at least two types of the investigated biosynthetic genes, one-fourth of them harbours more than four. This study demonstrates the significant diversity of Actinobacteria in the fish gut microbiota and it's potential to produce biologically active compounds.
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Affiliation(s)
- Mansooreh Jami
- BOKU - University of Natural Resources and Life Sciences, Department of Food Science and Technology, Institute of Food Science, Muthgasse 18, A-1190 Vienna, Austria.
| | - Mahdi Ghanbari
- BOKU - University of Natural Resources and Life Sciences, Department of Food Science and Technology, Institute of Food Science, Muthgasse 18, A-1190 Vienna, Austria; University of Zabol, Faculty of Natural Resources, Department of Fisheries, Zabol, Iran
| | - Wolfgang Kneifel
- BOKU - University of Natural Resources and Life Sciences, Department of Food Science and Technology, Institute of Food Science, Muthgasse 18, A-1190 Vienna, Austria
| | - Konrad J Domig
- BOKU - University of Natural Resources and Life Sciences, Department of Food Science and Technology, Institute of Food Science, Muthgasse 18, A-1190 Vienna, Austria
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Hirsch PR, Mauchline TH. The Importance of the Microbial N Cycle in Soil for Crop Plant Nutrition. ADVANCES IN APPLIED MICROBIOLOGY 2015; 93:45-71. [PMID: 26505688 DOI: 10.1016/bs.aambs.2015.09.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Nitrogen is crucial for living cells, and prior to the introduction of mineral N fertilizer, fixation of atmospheric N2 by diverse prokaryotes was the primary source of N in all ecosystems. Microorganisms drive the N cycle starting with N2 fixation to ammonia, through nitrification in which ammonia is oxidized to nitrate and denitrification where nitrate is reduced to N2 to complete the cycle, or partially reduced to generate the greenhouse gas nitrous oxide. Traditionally, agriculture has relied on rotations that exploited N fixed by symbiotic rhizobia in leguminous plants, and recycled wastes and manures that microbial activity mineralized to release ammonia or nitrate. Mineral N fertilizer provided by the Haber-Bosch process has become essential for modern agriculture to increase crop yields and replace N removed from the system at harvest. However, with the increasing global population and problems caused by unintended N wastage and pollution, more sustainable ways of managing the N cycle in soil and utilizing biological N2 fixation have become imperative. This review describes the biological N cycle and details the steps and organisms involved. The effects of various agricultural practices that exploit fixation, retard nitrification, and reduce denitrification are presented, together with strategies that minimize inorganic fertilizer applications and curtail losses. The development and implementation of new technologies together with rediscovering traditional practices are discussed to speculate how the grand challenge of feeding the world sustainably can be met.
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Affiliation(s)
- Penny R Hirsch
- Department of AgroEcology, Rothamsted Research, Harpenden, Hertfordshire, UK
| | - Tim H Mauchline
- Department of AgroEcology, Rothamsted Research, Harpenden, Hertfordshire, UK
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Kucho KI, Kakoi K, Yamaura M, Iwashita M, Abe M, Uchiumi T. Codon-optimized antibiotic resistance gene improves efficiency of transient transformation in Frankia. J Biosci 2014; 38:713-7. [PMID: 24287650 DOI: 10.1007/s12038-013-9361-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Frankia is a unique actinobacterium having abilities to fix atmospheric dinitrogen and to establish endosymbiosis with trees, but molecular bases underlying these interesting characteristics are poorly understood because of a lack of stable transformation system. Extremely high GC content of Frankia genome (more than 70 percent) can be a hindrance to successful transformation. We generated a synthetic gentamicin resistance gene whose codon usage is optimized to Frankia (fgmR) and evaluated its usefulness as a selection marker using a transient transformation system. Success rate of transient transformation and cell growth in selective culture were significantly increased by use of fgmR instead of a native gentamicin resistance gene, suggesting that codon optimization improved translation efficiency of the marker gene and increased antibiotic resistance. Our result shows that similarity in codon usage pattern is an important factor to be taken into account when exogenous transgenes are expressed in Frankia cells.
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Affiliation(s)
- Ken-Ichi Kucho
- Graduate School of Science and Engineering, Kagoshima University, Korimoto 1-21-35, Kagoshima 890-0065, Japan,
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Kucho KI, Yamanaka T, Sasakawa H, Mansour SR, Uchiumi T. Different dynamics of genome content shuffling among host-specificity groups of the symbiotic actinobacterium Frankia. BMC Genomics 2014; 15:609. [PMID: 25038796 PMCID: PMC4117964 DOI: 10.1186/1471-2164-15-609] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 07/09/2014] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Frankia is a genus of soil actinobacteria forming nitrogen-fixing root-nodule symbiotic relationships with non-leguminous woody plant species, collectively called actinorhizals, from eight dicotyledonous families. Frankia strains are classified into four host-specificity groups (HSGs), each of which exhibits a distinct host range. Genome sizes of representative strains of Alnus, Casuarina, and Elaeagnus HSGs are highly diverged and are positively correlated with the size of their host ranges. RESULTS The content and size of 12 Frankia genomes were investigated by in silico comparative genome hybridization and pulsed-field gel electrophoresis, respectively. Data were collected from four query strains of each HSG and compared with those of reference strains possessing completely sequenced genomes. The degree of difference in genome content between query and reference strains varied depending on HSG. Elaeagnus query strains were missing the greatest number (22-32%) of genes compared with the corresponding reference genome; Casuarina query strains lacked the fewest (0-4%), with Alnus query strains intermediate (14-18%). In spite of the remarkable gene loss, genome sizes of Alnus and Elaeagnus query strains were larger than would be expected based on total length of the absent genes. In contrast, Casuarina query strains had smaller genomes than expected. CONCLUSIONS The positive correlation between genome size and host range held true across all investigated strains, supporting the hypothesis that size and genome content differences are responsible for observed diversity in host plants and host plant biogeography among Frankia strains. In addition, our results suggest that different dynamics of shuffling of genome content have contributed to these symbiotic and biogeographic adaptations. Elaeagnus strains, and to a lesser extent Alnus strains, have gained and lost many genes to adapt to a wide range of environments and host plants. Conversely, rather than acquiring new genes, Casuarina strains have discarded genes to reduce genome size, suggesting an evolutionary orientation towards existence as specialist symbionts.
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MESH Headings
- Bacterial Proteins/genetics
- Bacterial Proteins/metabolism
- Cluster Analysis
- Comparative Genomic Hybridization
- DNA/chemistry
- DNA/metabolism
- DNA Gyrase/genetics
- DNA Gyrase/metabolism
- Electrophoresis, Gel, Pulsed-Field
- Frankia/genetics
- Genome, Bacterial
- High-Throughput Nucleotide Sequencing
- Nitrogen Fixation/genetics
- Phylogeny
- RNA, Ribosomal, 16S/chemistry
- RNA, Ribosomal, 16S/classification
- RNA, Ribosomal, 16S/genetics
- Sequence Analysis, DNA
- Symbiosis/genetics
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Affiliation(s)
- Ken-ichi Kucho
- />Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima, 890-0065 Japan
| | - Takashi Yamanaka
- />Department of Forest Microbiology, Forestry and Forest Products Research Institute (FFPRI), 1 Matsunosato, Tsukuba, Ibaraki, 305-8687 Japan
| | - Hideo Sasakawa
- />Graduate School of Natural Science and Technology, Okayama University, Tsushimanaka, Okayama, 700-8530 Japan
| | - Samira R Mansour
- />Botany Department, Faculty of Science, Suez Canal University, Ismailia, 41522 Egypt
| | - Toshiki Uchiumi
- />Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima, 890-0065 Japan
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Alteration of the exopolysaccharide production and the transcriptional profile of free-living Frankia strain CcI3 under nitrogen-fixing conditions. Appl Microbiol Biotechnol 2013; 97:10499-509. [PMID: 24097014 DOI: 10.1007/s00253-013-5277-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2013] [Revised: 09/09/2013] [Accepted: 09/10/2013] [Indexed: 10/26/2022]
Abstract
We investigated the effect of different nitrogen (N) sources on exopolysaccharide (EPS) production and composition by Frankia strain CcI3, a N2-fixing actinomycete that forms root nodules with Casuarina species. Frankia cells grown in the absence of NH4Cl (i.e., under N2-fixing conditions) produced 1.7-fold more EPS, with lower galactose (45.1 vs. 54.7 mol%) and higher mannose (17.3 vs. 9.7 mol%) contents than those grown in the presence of NH4Cl as a combined N-source. In the absence of the combined N-source, terminally linked and branched residue contents were nearly twice as high with 32.8 vs. 15.1 mol% and 15.1 vs. 8.7 mol%, respectively, than in its presence, while the content of linearly linked residues was lower with 52.1 mol% compared to 76.2 mol%. To find out clues for the altered EPS production at the transcriptional level, we performed whole-gene expression profiling using quantitative reverse transcription PCR and microarray technology. The transcription profiles of Frankia strain CcI3 grown in the absence of NH4Cl revealed up to 2 orders of magnitude higher transcription of nitrogen fixation-related genes compared to those of CcI3 cells grown in the presence of NH4Cl. Unexpectedly, microarray data did not provide evidence for transcriptional regulation as a mechanism for differences in EPS production. These findings indicate effects of nitrogen fixation on the production and composition of EPS in Frankia strain CcI3 and suggest posttranscriptional regulation of enhanced EPS production in the absence of the combined N-source.
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Santi C, Bogusz D, Franche C. Biological nitrogen fixation in non-legume plants. ANNALS OF BOTANY 2013; 111:743-67. [PMID: 23478942 PMCID: PMC3631332 DOI: 10.1093/aob/mct048] [Citation(s) in RCA: 259] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Accepted: 01/23/2013] [Indexed: 05/18/2023]
Abstract
BACKGROUND Nitrogen is an essential nutrient in plant growth. The ability of a plant to supply all or part of its requirements from biological nitrogen fixation (BNF) thanks to interactions with endosymbiotic, associative and endophytic symbionts, confers a great competitive advantage over non-nitrogen-fixing plants. SCOPE Because BNF in legumes is well documented, this review focuses on BNF in non-legume plants. Despite the phylogenic and ecological diversity among diazotrophic bacteria and their hosts, tightly regulated communication is always necessary between the microorganisms and the host plant to achieve a successful interaction. Ongoing research efforts to improve knowledge of the molecular mechanisms underlying these original relationships and some common strategies leading to a successful relationship between the nitrogen-fixing microorganisms and their hosts are presented. CONCLUSIONS Understanding the molecular mechanism of BNF outside the legume-rhizobium symbiosis could have important agronomic implications and enable the use of N-fertilizers to be reduced or even avoided. Indeed, in the short term, improved understanding could lead to more sustainable exploitation of the biodiversity of nitrogen-fixing organisms and, in the longer term, to the transfer of endosymbiotic nitrogen-fixation capacities to major non-legume crops.
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Affiliation(s)
- Carole Santi
- Université de Perpignan, Via Domitia, Avenue Paul Alduy, 66100 Perpignan, France
| | - Didier Bogusz
- Equipe Rhizogenèse, UMR DIADE (IRD/UM2), Institut de Recherche pour le Développement, 911 Avenue Agropolis, BP64501, 34394 Montpellier Cedex 5, France
| | - Claudine Franche
- Equipe Rhizogenèse, UMR DIADE (IRD/UM2), Institut de Recherche pour le Développement, 911 Avenue Agropolis, BP64501, 34394 Montpellier Cedex 5, France
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Speak, friend, and enter: signalling systems that promote beneficial symbiotic associations in plants. Nat Rev Microbiol 2013; 11:252-63. [PMID: 23493145 DOI: 10.1038/nrmicro2990] [Citation(s) in RCA: 826] [Impact Index Per Article: 75.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Plants associate with a wide range of microorganisms, with both detrimental and beneficial outcomes. Central to plant survival is the ability to recognize invading microorganisms and either limit their intrusion, in the case of pathogens, or promote the association, in the case of symbionts. To aid in this recognition process, elaborate communication and counter-communication systems have been established that determine the degree of ingress of the microorganism into the host plant. In this Review, I describe the common signalling processes used by plants during mutualistic interactions with microorganisms as diverse as arbuscular mycorrhizal fungi and rhizobial bacteria.
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Okubo T, Fukushima S, Minamisawa K. Evolution of Bradyrhizobium-Aeschynomene mutualism: living testimony of the ancient world or highly evolved state? PLANT & CELL PHYSIOLOGY 2012; 53:2000-2007. [PMID: 23161855 DOI: 10.1093/pcp/pcs150] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Until recently it had been well established that the initial step in legume-rhizobia symbioses was flavonoid and Nod factor (NF) signaling. However, NF-independent symbiosis is now known to occur between Bradyrhizobium and some species of Aeschynomene. Since its discovery, this unusual symbiotic system has attracted attention, and efforts have been devoted to revealing the NF-independent symbiotic mechanism, although the molecular mechanisms of nodule initiation still remain to be elucidated. NF-independent symbiosis is also interesting from the perspective of the evolution of legume-rhizobia symbiosis. In this mini-review, we discuss the current literature on the NF-independent symbiotic system in terms of phylogeny of the partners, infection, bacteroid differentiation, nodule structure, photosynthesis, endophytic features and model host plant. We also discuss NF-independent symbiosis, which is generally regarded to be more primitive than NF-dependent symbiosis, because the bacteria invade host plants via 'crack entry'. We propose three possible scenarios concerning the evolution of NF-independent symbiosis, which do not exclude the possibility that the NF-independent system evolved from NF-dependent interactions. Finally, we examine an interesting question on Bradyrhizobium-Aeschynomene mutualism, which is how do they initiate symbiosis without NF. Phylogenetic and genomic analyses of symbiotic and non-symbiotic bradyrhizobia with A. indica may be crucial to address the question, because of the very narrow phylogeny of natural endosymbionts without nod genes compared with other legume-rhizobia symbioses.
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Affiliation(s)
- Takashi Okubo
- Graduate School of Life Sciences, Tohoku University, Katahira, Aoba-ku, Sendai, 980-8577 Japan
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Seipke RF, Kaltenpoth M, Hutchings MI. Streptomycesas symbionts: an emerging and widespread theme? FEMS Microbiol Rev 2012; 36:862-76. [DOI: 10.1111/j.1574-6976.2011.00313.x] [Citation(s) in RCA: 277] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Accepted: 10/20/2011] [Indexed: 12/24/2022] Open
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Okubo T, Tsukui T, Maita H, Okamoto S, Oshima K, Fujisawa T, Saito A, Futamata H, Hattori R, Shimomura Y, Haruta S, Morimoto S, Wang Y, Sakai Y, Hattori M, Aizawa SI, Nagashima KVP, Masuda S, Hattori T, Yamashita A, Bao Z, Hayatsu M, Kajiya-Kanegae H, Yoshinaga I, Sakamoto K, Toyota K, Nakao M, Kohara M, Anda M, Niwa R, Jung-Hwan P, Sameshima-Saito R, Tokuda SI, Yamamoto S, Yamamoto S, Yokoyama T, Akutsu T, Nakamura Y, Nakahira-Yanaka Y, Hoshino YT, Hirakawa H, Mitsui H, Terasawa K, Itakura M, Sato S, Ikeda-Ohtsubo W, Sakakura N, Kaminuma E, Minamisawa K. Complete genome sequence of Bradyrhizobium sp. S23321: insights into symbiosis evolution in soil oligotrophs. Microbes Environ 2012; 27:306-15. [PMID: 22452844 PMCID: PMC4036050 DOI: 10.1264/jsme2.me11321] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2011] [Accepted: 02/28/2012] [Indexed: 11/12/2022] Open
Abstract
Bradyrhizobium sp. S23321 is an oligotrophic bacterium isolated from paddy field soil. Although S23321 is phylogenetically close to Bradyrhizobium japonicum USDA110, a legume symbiont, it is unable to induce root nodules in siratro, a legume often used for testing Nod factor-dependent nodulation. The genome of S23321 is a single circular chromosome, 7,231,841 bp in length, with an average GC content of 64.3%. The genome contains 6,898 potential protein-encoding genes, one set of rRNA genes, and 45 tRNA genes. Comparison of the genome structure between S23321 and USDA110 showed strong colinearity; however, the symbiosis islands present in USDA110 were absent in S23321, whose genome lacked a chaperonin gene cluster (groELS3) for symbiosis regulation found in USDA110. A comparison of sequences around the tRNA-Val gene strongly suggested that S23321 contains an ancestral-type genome that precedes the acquisition of a symbiosis island by horizontal gene transfer. Although S23321 contains a nif (nitrogen fixation) gene cluster, the organization, homology, and phylogeny of the genes in this cluster were more similar to those of photosynthetic bradyrhizobia ORS278 and BTAi1 than to those on the symbiosis island of USDA110. In addition, we found genes encoding a complete photosynthetic system, many ABC transporters for amino acids and oligopeptides, two types (polar and lateral) of flagella, multiple respiratory chains, and a system for lignin monomer catabolism in the S23321 genome. These features suggest that S23321 is able to adapt to a wide range of environments, probably including low-nutrient conditions, with multiple survival strategies in soil and rhizosphere.
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Affiliation(s)
- Takashi Okubo
- Graduate School of Life Sciences, Tohoku University, 2–1–1 Katahira, Aoba-ku, Sendai, Miyagi 980–8577, Japan
| | - Takahiro Tsukui
- Graduate School of Life Sciences, Tohoku University, 2–1–1 Katahira, Aoba-ku, Sendai, Miyagi 980–8577, Japan
| | - Hiroko Maita
- Graduate School of Life Sciences, Tohoku University, 2–1–1 Katahira, Aoba-ku, Sendai, Miyagi 980–8577, Japan
- Laboratory for Plant Genome Informatics, Kazusa DNA Research Institute, 2–6–7 Kazusakamatari, Kisarazu, Chiba 292–0818, Japan
| | - Shinobu Okamoto
- Database Center for Life Science (DBCLS), Research Organization of Information and Systems (ROIS), 2–11–16 Yayoi, Bunkyo-ku, Tokyo 113–0032, Japan
| | - Kenshiro Oshima
- Graduate School of Frontier Sciences, University of Tokyo, 5–1–5, Kashiwa-no-ha, Kashiwa, Chiba 277–8561, Japan
| | - Takatomo Fujisawa
- Center for Information Biology and DNA Data Bank of Japan, National Institute of Genetics, Research Organization for Information and Systems, Yata, Mishima, Shizuoka 411–85, Japan
| | - Akihiro Saito
- Department of Material and Life Science, Faculty of Science and Technology, Shizuoka Institute of Science and Technology 2200–2 Toyosawa, Fukuroi, Shizuoka 437–8555, Japan
| | - Hiroyuki Futamata
- Department of Material Science and Chemical Engineering, Shizuoka University, 3–5–1 Jyohoku, Naka-ku, Hamamatsu, Shizuoka, 432–8561, Japan
| | - Reiko Hattori
- Attic Lab, 1–6–2–401 Komegafukuro, Aobaku, Sendai, Miyagi 980–0813, Japan
| | - Yumi Shimomura
- National Institute for Agro-Environmental Sciences, 3–1–3 Kannondai, Tsukuba, Ibaraki 305–8604, Japan
| | - Shin Haruta
- Graduate School of Science and Engineering, Tokyo Metropolitan University, 1–1 Minami-Osawa, Hachioji-shi, Tokyo 192–0397, Japan
| | - Sho Morimoto
- National Institute for Agro-Environmental Sciences, 3–1–3 Kannondai, Tsukuba, Ibaraki 305–8604, Japan
| | - Yong Wang
- National Institute for Agro-Environmental Sciences, 3–1–3 Kannondai, Tsukuba, Ibaraki 305–8604, Japan
| | - Yoriko Sakai
- National Institute for Agro-Environmental Sciences, 3–1–3 Kannondai, Tsukuba, Ibaraki 305–8604, Japan
| | - Masahira Hattori
- Graduate School of Frontier Sciences, University of Tokyo, 5–1–5, Kashiwa-no-ha, Kashiwa, Chiba 277–8561, Japan
| | - Shin-ichi Aizawa
- Department of Life Sciences, Prefectural University of Hiroshima, 562 Nanatsuka, Shobara, Hiroshima 727–0023, Japan
| | - Kenji V. P. Nagashima
- Graduate School of Science and Engineering, Tokyo Metropolitan University, 1–1 Minami-Osawa, Hachioji-shi, Tokyo 192–0397, Japan
| | - Sachiko Masuda
- Graduate School of Life Sciences, Tohoku University, 2–1–1 Katahira, Aoba-ku, Sendai, Miyagi 980–8577, Japan
| | - Tsutomu Hattori
- Attic Lab, 1–6–2–401 Komegafukuro, Aobaku, Sendai, Miyagi 980–0813, Japan
| | - Akifumi Yamashita
- Graduate School of Life Sciences, Tohoku University, 2–1–1 Katahira, Aoba-ku, Sendai, Miyagi 980–8577, Japan
| | - Zhihua Bao
- Graduate School of Life Sciences, Tohoku University, 2–1–1 Katahira, Aoba-ku, Sendai, Miyagi 980–8577, Japan
| | - Masahito Hayatsu
- National Institute for Agro-Environmental Sciences, 3–1–3 Kannondai, Tsukuba, Ibaraki 305–8604, Japan
| | - Hiromi Kajiya-Kanegae
- Database Center for Life Science (DBCLS), Research Organization of Information and Systems (ROIS), 2–11–16 Yayoi, Bunkyo-ku, Tokyo 113–0032, Japan
| | - Ikuo Yoshinaga
- Graduate School of Agriculture, Kyoto University, Oiwake-cho, Kitashirakawa, Sakyo-ku, Kyoto 606–8502, Japan
| | - Kazunori Sakamoto
- Graduate School of Horticulture, Chiba University, 648 Matsudo, Matsudo, Chiba 271–8510, Japan
| | - Koki Toyota
- Tokyo University of Agriculture and Technology, 2–24–16, Naka, Koganei, Tokyo 184–8588, Japan
| | - Mitsuteru Nakao
- Database Center for Life Science (DBCLS), Research Organization of Information and Systems (ROIS), 2–11–16 Yayoi, Bunkyo-ku, Tokyo 113–0032, Japan
| | - Mitsuyo Kohara
- Laboratory for Plant Genome Informatics, Kazusa DNA Research Institute, 2–6–7 Kazusakamatari, Kisarazu, Chiba 292–0818, Japan
| | - Mizue Anda
- Graduate School of Life Sciences, Tohoku University, 2–1–1 Katahira, Aoba-ku, Sendai, Miyagi 980–8577, Japan
| | - Rieko Niwa
- National Institute for Agro-Environmental Sciences, 3–1–3 Kannondai, Tsukuba, Ibaraki 305–8604, Japan
| | - Park Jung-Hwan
- Graduate School of Agriculture, Kyoto University, Oiwake-cho, Kitashirakawa, Sakyo-ku, Kyoto 606–8502, Japan
| | - Reiko Sameshima-Saito
- Faculty of Agriculture, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422–8529, Japan
| | - Shin-ichi Tokuda
- National Institute of Vegetable and Tea Sciences, National Agriculture and Food Research Organization, 3–1–1 Kannondai, Tsukuba, Ibaraki 305–8666, Japan
| | - Sumiko Yamamoto
- Center for Information Biology and DNA Data Bank of Japan, National Institute of Genetics, Research Organization for Information and Systems, Yata, Mishima, Shizuoka 411–85, Japan
| | - Syuji Yamamoto
- Department of Material Science and Chemical Engineering, Shizuoka University, 3–5–1 Jyohoku, Naka-ku, Hamamatsu, Shizuoka, 432–8561, Japan
| | - Tadashi Yokoyama
- Institute of Agriculture, Tokyo university of Agriculture and Technology, 3–5–8 Saiwaicho, Fuchu, Tokyo 183–8509, Japan
| | - Tomoko Akutsu
- Laboratory for Plant Genome Informatics, Kazusa DNA Research Institute, 2–6–7 Kazusakamatari, Kisarazu, Chiba 292–0818, Japan
| | - Yasukazu Nakamura
- Center for Information Biology and DNA Data Bank of Japan, National Institute of Genetics, Research Organization for Information and Systems, Yata, Mishima, Shizuoka 411–85, Japan
| | - Yuka Nakahira-Yanaka
- Graduate School of Life and Environment Sciences, University of Tsukuba, 1–1–1 Ten-noudai, Tsukuba, Ibaraki 305–8572, Japan
| | - Yuko Takada Hoshino
- National Institute for Agro-Environmental Sciences, 3–1–3 Kannondai, Tsukuba, Ibaraki 305–8604, Japan
| | - Hideki Hirakawa
- Laboratory for Plant Genome Informatics, Kazusa DNA Research Institute, 2–6–7 Kazusakamatari, Kisarazu, Chiba 292–0818, Japan
| | - Hisayuki Mitsui
- Graduate School of Life Sciences, Tohoku University, 2–1–1 Katahira, Aoba-ku, Sendai, Miyagi 980–8577, Japan
| | - Kimihiro Terasawa
- Graduate School of Life Sciences, Tohoku University, 2–1–1 Katahira, Aoba-ku, Sendai, Miyagi 980–8577, Japan
| | - Manabu Itakura
- Graduate School of Life Sciences, Tohoku University, 2–1–1 Katahira, Aoba-ku, Sendai, Miyagi 980–8577, Japan
| | - Shusei Sato
- Graduate School of Life Sciences, Tohoku University, 2–1–1 Katahira, Aoba-ku, Sendai, Miyagi 980–8577, Japan
- Laboratory for Plant Genome Informatics, Kazusa DNA Research Institute, 2–6–7 Kazusakamatari, Kisarazu, Chiba 292–0818, Japan
| | - Wakako Ikeda-Ohtsubo
- Graduate School of Life Sciences, Tohoku University, 2–1–1 Katahira, Aoba-ku, Sendai, Miyagi 980–8577, Japan
| | - Natsuko Sakakura
- Center for Information Biology and DNA Data Bank of Japan, National Institute of Genetics, Research Organization for Information and Systems, Yata, Mishima, Shizuoka 411–85, Japan
| | - Eli Kaminuma
- Center for Information Biology and DNA Data Bank of Japan, National Institute of Genetics, Research Organization for Information and Systems, Yata, Mishima, Shizuoka 411–85, Japan
| | - Kiwamu Minamisawa
- Graduate School of Life Sciences, Tohoku University, 2–1–1 Katahira, Aoba-ku, Sendai, Miyagi 980–8577, Japan
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Casuarina root exudates alter the physiology, surface properties, and plant infectivity of Frankia sp. strain CcI3. Appl Environ Microbiol 2011; 78:575-80. [PMID: 22101047 DOI: 10.1128/aem.06183-11] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The actinomycete genus Frankia forms nitrogen-fixing symbioses with 8 different families of actinorhizal plants, representing more than 200 different species. Very little is known about the initial molecular interactions between Frankia and host plants in the rhizosphere. Root exudates are important in Rhizobium-legume symbiosis, especially for initiating Nod factor synthesis. We measured differences in Frankia physiology after exposure to host aqueous root exudates to assess their effects on actinorhizal symbioses. Casuarina cunninghamiana root exudates were collected from plants under nitrogen-sufficient and -deficient conditions and tested on Frankia sp. strain CcI3. Root exudates increased the growth yield of Frankia in the presence of a carbon source, but Frankia was unable to use the root exudates as a sole carbon or energy source. Exposure to root exudates caused hyphal "curling" in Frankia cells, suggesting a chemotrophic response or surface property change. Exposure to root exudates altered Congo red dye binding, which indicated changes in the bacterial surface properties at the fatty acid level. Fourier transform infrared spectroscopy (FTIR) confirmed fatty acid changes and revealed further carbohydrate changes. Frankia cells preexposed to C. cunninghamiana root exudates for 6 days formed nodules on the host plant significantly earlier than control cells. These data support the hypothesis of early chemical signaling between actinorhizal host plants and Frankia in the rhizosphere.
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Benson DR, Brooks JM, Huang Y, Bickhart DM, Mastronunzio JE. The biology of Frankia sp. strains in the post-genome era. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2011; 24:1310-1316. [PMID: 21848398 DOI: 10.1094/mpmi-06-11-0150] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Progress in understanding symbiotic determinants involved in the N(2)-fixing actinorhizal plant symbioses has been slow but steady. Problems persist with studying the bacterial contributions to the symbiosis using traditional microbiological techniques. However, recent years have seen the emergence of several genomes from Frankia sp. strains and the development of techniques for manipulating plant gene expression. Approaches to understanding the bacterial side of the symbiosis have employed a range of techniques that reveal the proteomes and transcriptomes from both cultured and symbiotic frankiae. The picture beginning to emerge provides some perspective on the heterogeneity of frankial populations in both conditions. In general, frankial populations in root nodules seem to maintain a rather robust metabolism that includes nitrogen fixation and substantial biosynthesis and energy-generating pathways, along with a modified ammonium assimilation program. To date, particular bacterial genes have not been implicated in root nodule formation but some hypotheses are emerging with regard to how the plant and microorganism manage to coexist. In particular, frankiae seem to present a nonpathogenic presence to the plant that may have the effect of minimizing some plant defense responses. Future studies using high-throughput approaches will likely clarify the range of bacterial responses to symbiosis that will need to be understood in light of the more rapidly advancing work on the plant host.
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Affiliation(s)
- David R Benson
- Department of Molecular and Cell Biology, University of Connecticut, Stors, CT, USA.
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26
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Gough C, Cullimore J. Lipo-chitooligosaccharide signaling in endosymbiotic plant-microbe interactions. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2011; 24:867-78. [PMID: 21469937 DOI: 10.1094/mpmi-01-11-0019] [Citation(s) in RCA: 136] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The arbuscular mycorrhizal (AM) and the rhizobia-legume (RL) root endosymbioses are established as a result of signal exchange in which there is mutual recognition of diffusible signals produced by plant and microbial partners. It was discovered 20 years ago that the key symbiotic signals produced by rhizobial bacteria are lipo-chitooligosaccharides (LCO), called Nod factors. These LCO are perceived via lysin-motif (LysM) receptors and activate a signaling pathway called the common symbiotic pathway (CSP), which controls both the RL and the AM symbioses. Recent work has established that an AM fungus, Glomus intraradices, also produces LCO that activate the CSP, leading to induction of gene expression and root branching in Medicago truncatula. These Myc-LCO also stimulate mycorrhization in diverse plants. In addition, work on the nonlegume Parasponia andersonii has shown that a LysM receptor is required for both successful mycorrhization and nodulation. Together these studies show that structurally related signals and the LysM receptor family are key components of both nodulation and mycorrhization. LysM receptors are also involved in the perception of chitooligosaccharides (CO), which are derived from fungal cell walls and elicit defense responses and resistance to pathogens in diverse plants. The discovery of Myc-LCO and a LysM receptor required for the AM symbiosis, therefore, not only raises questions of how legume plants discriminate fungal and bacterial endosymbionts but also, more generally, of how plants discriminate endosymbionts from pathogenic microorganisms using structurally related LCO and CO signals and of how these perception mechanisms have evolved.
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Affiliation(s)
- Clare Gough
- Laboratory of Plant-Microbe Interactions, UMR CNRS-INRA 2594-441, Castanet-Tolosan Cedex, France.
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27
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Hocher V, Alloisio N, Auguy F, Fournier P, Doumas P, Pujic P, Gherbi H, Queiroux C, Da Silva C, Wincker P, Normand P, Bogusz D. Transcriptomics of actinorhizal symbioses reveals homologs of the whole common symbiotic signaling cascade. PLANT PHYSIOLOGY 2011; 156:700-11. [PMID: 21464474 PMCID: PMC3177269 DOI: 10.1104/pp.111.174151] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Accepted: 03/30/2011] [Indexed: 05/19/2023]
Abstract
Comparative transcriptomics of two actinorhizal symbiotic plants, Casuarina glauca and Alnus glutinosa, was used to gain insight into their symbiotic programs triggered following contact with the nitrogen-fixing actinobacterium Frankia. Approximately 14,000 unigenes were recovered in roots and 3-week-old nodules of each of the two species. A transcriptomic array was designed to monitor changes in expression levels between roots and nodules, enabling the identification of up- and down-regulated genes as well as root- and nodule-specific genes. The expression levels of several genes emblematic of symbiosis were confirmed by quantitative polymerase chain reaction. As expected, several genes related to carbon and nitrogen exchange, defense against pathogens, or stress resistance were strongly regulated. Furthermore, homolog genes of the common and nodule-specific signaling pathways known in legumes were identified in the two actinorhizal symbiotic plants. The conservation of the host plant signaling pathway is all the more surprising in light of the lack of canonical nod genes in the genomes of its bacterial symbiont, Frankia. The evolutionary pattern emerging from these studies reinforces the hypothesis of a common genetic ancestor of the Fabid (Eurosid I) nodulating clade with a genetic predisposition for nodulation.
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28
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Ishihara H, Koriyama H, Osawa A, Zehirov G, Yamaura M, Kucho KI, Abe M, Higashi S, Kondorosi E, Mergaert P, Uchiumi T. Characteristics of Bacteroids in Indeterminate Nodules of the Leguminous Tree Leucaena glauca. Microbes Environ 2011; 26:156-9. [DOI: 10.1264/jsme2.me11104] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | | | | | - Grigor Zehirov
- Graduate School of Science and Engineering, Kagoshima University
| | | | - Ken-ichi Kucho
- Graduate School of Science and Engineering, Kagoshima University
| | - Mikiko Abe
- Graduate School of Science and Engineering, Kagoshima University
| | | | - Eva Kondorosi
- Institut des Sciences du Végétal, Centre National de la Recherche Scientifique
- Institute for Plant Genomics, Human Biotechnology and Bioenergy, Bay Zoltan Foundation for Applied Research
| | - Peter Mergaert
- Institut des Sciences du Végétal, Centre National de la Recherche Scientifique
| | - Toshiki Uchiumi
- Graduate School of Science and Engineering, Kagoshima University
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