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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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2
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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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Tsurugi-Sakurada A, Kaneko T, Takemoto K, Yoneda Y, Yamanaka T, Kawai S. Cyclic diarylheptanoids as potential signal compounds during actinorhizal symbiosis between Alnus sieboldiana and Frankia. Fitoterapia 2022; 162:105284. [PMID: 36007806 DOI: 10.1016/j.fitote.2022.105284] [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: 07/01/2022] [Revised: 08/17/2022] [Accepted: 08/18/2022] [Indexed: 11/26/2022]
Abstract
The nitrogen-fixing actinomycete Frankia coexists with actinorhizal plants via nodules and supplies nitrogen compounds to the plants. Although communication has been suggested to exist through chemical substances in this nodule symbiosis, the details underlying this mechanism remain elusive. The biphenyl-type diarylheptanoids (BP-CDHs), alnusonol, and alnusdione, previously isolated from the actinorhizal plant A. sieboldiana branch wood, are secondary metabolites that accumulate in a limited number of plant species. However, since relatively widely distributed in actinorhizal plants, we investigated whether adding A. sieboldiana root extracts and these BP-CDHs could affect plant seedlings inoculated with Frankia. The results showed that the addition of root extract or alnusonol significantly increased the number of nodules and lobes more than two times compared with that upon Frankia supplementation only. We also proved that the extracted components of this plant affected nodule symbiosis. Finally, we confirmed through LC-MS that the root extract component contained BP-CDH, alnusonol. The above-described results indicate that BP-CDHs, at leaset alnusonol, might function as signal compounds from the plant side of the actinorhizal symbiosis between A. sieboldiana and Frankia.
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Affiliation(s)
| | - Takahiro Kaneko
- Faculty of Agriculture, Shizuoka University, Ohya, Suruga-ku, Shizuoka 422-8529, Japan
| | - Konosuke Takemoto
- Faculty of Agriculture, Shizuoka University, Ohya, Suruga-ku, Shizuoka 422-8529, Japan
| | - Yuko Yoneda
- Faculty of Agriculture, Shizuoka University, Ohya, Suruga-ku, Shizuoka 422-8529, Japan
| | - Takashi Yamanaka
- Tohoku Research Center, Forestry and Forest Products Research Institute, Morioka, Iwate 020-0123, Japan
| | - Shingo Kawai
- Faculty of Agriculture, Shizuoka University, Ohya, Suruga-ku, Shizuoka 422-8529, Japan.
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Ghodhbane-Gtari F, D’Angelo T, Gueddou A, Ghazouani S, Gtari M, Tisa LS. Alone Yet Not Alone: Frankia Lives Under the Same Roof With Other Bacteria in Actinorhizal Nodules. Front Microbiol 2021; 12:749760. [PMID: 34925263 PMCID: PMC8674757 DOI: 10.3389/fmicb.2021.749760] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 11/08/2021] [Indexed: 02/01/2023] Open
Abstract
Actinorhizal plants host mutualistic symbionts of the nitrogen-fixing actinobacterial genus Frankia within nodule structures formed on their roots. Several plant-growth-promoting bacteria have also been isolated from actinorhizal root nodules, but little is known about them. We were interested investigating the in planta microbial community composition of actinorhizal root nodules using culture-independent techniques. To address this knowledge gap, 16S rRNA gene amplicon and shotgun metagenomic sequencing was performed on DNA from the nodules of Casuarina glauca. DNA was extracted from C. glauca nodules collected in three different sampling sites in Tunisia, along a gradient of aridity ranging from humid to arid. Sequencing libraries were prepared using Illumina NextEra technology and the Illumina HiSeq 2500 platform. Genome bins extracted from the metagenome were taxonomically and functionally profiled. Community structure based off preliminary 16S rRNA gene amplicon data was analyzed via the QIIME pipeline. Reconstructed genomes were comprised of members of Frankia, Micromonospora, Bacillus, Paenibacillus, Phyllobacterium, and Afipia. Frankia dominated the nodule community at the humid sampling site, while the absolute and relative prevalence of Frankia decreased at the semi-arid and arid sampling locations. Actinorhizal plants harbor similar non-Frankia plant-growth-promoting-bacteria as legumes and other plants. The data suggests that the prevalence of Frankia in the nodule community is influenced by environmental factors, with being less abundant under more arid environments.
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Affiliation(s)
- Faten Ghodhbane-Gtari
- Laboratoire Microorganismes et Biomolécules Actives, Faculté des Sciences de Tunis, Université de Tunis El Manar, Tunis, Tunisia
- Institut Supérieur de Biotechnologie de Sidi Thabet, Université de la Manouba, Sidi Thabet, Tunisia
- Unité de Bactériologie Moléculaire et Génomique, Centre Urbain Nord, Institut National des Sciences Appliquées et de Technologie, Université de Carthage, Tunis, Tunisia
| | - Timothy D’Angelo
- Department of Molecular, Cellular, and Biomedical Sciences, University of New Hampshire, Durham, NH, United States
| | - Abdellatif Gueddou
- Unité de Bactériologie Moléculaire et Génomique, Centre Urbain Nord, Institut National des Sciences Appliquées et de Technologie, Université de Carthage, Tunis, Tunisia
| | - Sabrine Ghazouani
- Unité de Bactériologie Moléculaire et Génomique, Centre Urbain Nord, Institut National des Sciences Appliquées et de Technologie, Université de Carthage, Tunis, Tunisia
| | - Maher Gtari
- Laboratoire Microorganismes et Biomolécules Actives, Faculté des Sciences de Tunis, Université de Tunis El Manar, Tunis, Tunisia
- Unité de Bactériologie Moléculaire et Génomique, Centre Urbain Nord, Institut National des Sciences Appliquées et de Technologie, Université de Carthage, Tunis, Tunisia
| | - Louis S. Tisa
- Department of Molecular, Cellular, and Biomedical Sciences, University of New Hampshire, Durham, NH, United States
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Buendia L, Ribeyre C, Bensmihen S, Lefebvre B. Brachypodium distachyon tar2lhypo mutant shows reduced root developmental response to symbiotic signal but increased arbuscular mycorrhiza. PLANT SIGNALING & BEHAVIOR 2019; 14:e1651608. [PMID: 31392918 PMCID: PMC6768201 DOI: 10.1080/15592324.2019.1651608] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 07/23/2019] [Accepted: 07/26/2019] [Indexed: 06/10/2023]
Abstract
Auxin is a major phytohormone that controls root development. A role for auxin is also emerging in the control of plant-microbe interactions, including for the establishment of root endosymbiosis between plants and arbuscular mycorrhizal fungi (AMF). Auxin perception is important both for root colonization by AMF and for arbuscule formation. AMF produce symbiotic signals called lipo-chitooligosaccharides (LCOs) that can modify auxin homeostasis and promote lateral root formation (LRF). Since Brachypodium distachyon (Brachypodium) has a different auxin sensitivity compared to other plant species, we wondered whether this would interfere with the effect of auxin in arbuscular mycorrhizal (AM) symbiosis. Here we tested whether tar2lhypo a Brachypodium mutant with an increase in endogenous auxin content is affected in LRF stimulation by LCOs and in AM symbiosis. We found that, in contrast to control plants, LCO treatment inhibited LRF of the tar2lhypo mutant. However, the level of AMF colonization and the abundance of arbuscules were increased in tar2lhypo compared to control plants, suggesting that auxin also plays a positive role in both AMF colonization and arbuscule formation in Brachypodium.
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Affiliation(s)
- Luis Buendia
- LIPM, Université de Toulouse, INRA, CNRS, Castanet-Tolosan, France
| | - Camille Ribeyre
- LIPM, Université de Toulouse, INRA, CNRS, Castanet-Tolosan, France
| | - Sandra Bensmihen
- LIPM, Université de Toulouse, INRA, CNRS, Castanet-Tolosan, France
| | - Benoit Lefebvre
- LIPM, Université de Toulouse, INRA, CNRS, Castanet-Tolosan, France
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Hocher V, Ngom M, Carré-Mlouka A, Tisseyre P, Gherbi H, Svistoonoff S. Signalling in actinorhizal root nodule symbioses. Antonie van Leeuwenhoek 2018; 112:23-29. [PMID: 30306463 DOI: 10.1007/s10482-018-1182-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 10/06/2018] [Indexed: 11/29/2022]
Abstract
Plants able to establish a nitrogen-fixing root nodule symbiosis with the actinobacterium Frankia are called actinorhizal. These interactions lead to the formation of new root organs, called actinorhizal nodules, where the bacteria are hosted intracellularly and fix atmospheric nitrogen thus providing the plant with an almost unlimited source of nitrogen for its nutrition. Like other symbiotic interactions, actinorhizal nodulation involves elaborate signalling between both partners of the symbiosis, leading to specific recognition between the plant and its compatible microbial partner, its accommodation inside plant cells and the development of functional root nodules. Actinorhizal nodulation shares many features with rhizobial nodulation but our knowledge on the molecular mechanisms involved in actinorhizal nodulation remains very scarce. However recent technical achievements for several actinorhizal species are allowing major discoveries in this field. In this review, we provide an outline on signalling molecules involved at different stages of actinorhizal nodule formation and the corresponding signalling pathways and gene networks.
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Affiliation(s)
- Valérie Hocher
- LSTM, UMR 040 IRD/INRA/CIRAD, Université Montpellier/Supagro, TA A-82/J, Campus International de Baillarguet, 34398, Montpellier CDX 5, France
| | - Mariama Ngom
- LCM, IRD/ISRA, UCAD, Centre de Recherche de Bel Air, BP 1386, Dakar, Senegal.,LMI LAPSE, Centre de Recherche de Bel Air, BP 1386, Dakar, Senegal
| | - Alyssa Carré-Mlouka
- LSTM, UMR 040 IRD/INRA/CIRAD, Université Montpellier/Supagro, TA A-82/J, Campus International de Baillarguet, 34398, Montpellier CDX 5, France.,MCAM, UMR 7245 CNRS/MNHN, Sorbonne Universités, CP 54, 57 rue Cuvier, 75005, Paris, France
| | - Pierre Tisseyre
- LSTM, UMR 040 IRD/INRA/CIRAD, Université Montpellier/Supagro, TA A-82/J, Campus International de Baillarguet, 34398, Montpellier CDX 5, France
| | - Hassen Gherbi
- LSTM, UMR 040 IRD/INRA/CIRAD, Université Montpellier/Supagro, TA A-82/J, Campus International de Baillarguet, 34398, Montpellier CDX 5, France
| | - Sergio Svistoonoff
- LSTM, UMR 040 IRD/INRA/CIRAD, Université Montpellier/Supagro, TA A-82/J, Campus International de Baillarguet, 34398, Montpellier CDX 5, France. .,LCM, IRD/ISRA, UCAD, Centre de Recherche de Bel Air, BP 1386, Dakar, Senegal. .,LMI LAPSE, Centre de Recherche de Bel Air, BP 1386, Dakar, Senegal.
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Gifford I, Battenberg K, Vaniya A, Wilson A, Tian L, Fiehn O, Berry AM. Distinctive Patterns of Flavonoid Biosynthesis in Roots and Nodules of Datisca glomerata and Medicago spp. Revealed by Metabolomic and Gene Expression Profiles. FRONTIERS IN PLANT SCIENCE 2018; 9:1463. [PMID: 30364174 PMCID: PMC6192435 DOI: 10.3389/fpls.2018.01463] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 09/14/2018] [Indexed: 05/08/2023]
Abstract
Plants within the Nitrogen-fixing Clade (NFC) of Angiosperms form root nodule symbioses with nitrogen-fixing bacteria. Actinorhizal plants (in Cucurbitales, Fagales, Rosales) form symbioses with the actinobacteria Frankia while legumes (Fabales) form symbioses with proteobacterial rhizobia. Flavonoids, secondary metabolites of the phenylpropanoid pathway, have been shown to play major roles in legume root nodule symbioses: as signal molecules that in turn trigger rhizobial nodulation initiation signals and acting as polar auxin transport inhibitors, enabling a key step in nodule organogenesis. To explore a potentially broader role for flavonoids in root nodule symbioses across the NFC, we combined metabolomic and transcriptomic analyses of roots and nodules of the actinorhizal host Datisca glomerata and legumes of the genus Medicago. Patterns of biosynthetic pathways were inferred from flavonoid metabolite profiles and phenylpropanoid gene expression patterns in the two hosts to identify similarities and differences. Similar classes of flavonoids were represented in both hosts, and an increase in flavonoids generally in the nodules was observed, with differences in flavonoids prominent in each host. While both hosts produced derivatives of naringenin, the metabolite profile in D. glomerata indicated an emphasis on the pinocembrin biosynthetic pathway, and an abundance of flavonols with potential roles in symbiosis. Additionally, the gene expression profile indicated a decrease in expression in the lignin/monolignol pathway. In Medicago sativa, by contrast, isoflavonoids were highly abundant featuring more diverse and derived isoflavonoids than D. glomerata. Gene expression patterns supported these differences in metabolic pathways, especially evident in a difference in expression of cinnamic acid 4-hydroxylase (C4H), which was expressed at substantially lower levels in D. glomerata than in a Medicago truncatula transcriptome where it was highly expressed. C4H is a major rate-limiting step in phenylpropanoid biosynthesis that separates the pinocembrin pathway from the lignin/monolignol and naringenin-based flavonoid branches. Shikimate O-hydroxycinnamoyltransferase, the link between flavonoid biosynthesis and the lignin/monolignol pathway, was also expressed at much lower levels in D. glomerata than in M. truncatula. Our results indicate (a) a likely major role for flavonoids in actinorhizal nodules, and (b) differences in metabolic flux in flavonoid and phenylpropanoid biosynthesis between the different hosts in symbiosis.
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Affiliation(s)
- Isaac Gifford
- Department of Plant Sciences, University of California, Davis, Davis, CA, United States
| | - Kai Battenberg
- Department of Plant Sciences, University of California, Davis, Davis, CA, United States
| | - Arpana Vaniya
- West Coast Metabolomics Center, University of California, Davis, Davis, CA, United States
| | - Alex Wilson
- Department of Plant Sciences, University of California, Davis, Davis, CA, United States
| | - Li Tian
- Department of Plant Sciences, University of California, Davis, Davis, CA, United States
| | - Oliver Fiehn
- West Coast Metabolomics Center, University of California, Davis, Davis, CA, United States
| | - Alison M. Berry
- Department of Plant Sciences, University of California, Davis, Davis, CA, United States
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Ghodhbane-Gtari F, Nouioui I, Hezbri K, Lundstedt E, D'Angelo T, McNutt Z, Laplaze L, Gherbi H, Vaissayre V, Svistoonoff S, Ahmed HB, Boudabous A, Tisa LS. The plant-growth-promoting actinobacteria of the genus Nocardia induces root nodule formation in Casuarina glauca. Antonie van Leeuwenhoek 2018; 112:75-90. [PMID: 30203358 DOI: 10.1007/s10482-018-1147-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 08/21/2018] [Indexed: 10/28/2022]
Abstract
Actinorhizal plants form a symbiotic association with the nitrogen-fixing actinobacteria Frankia. These plants have important economic and ecological benefits including land reclamation, soil stabilization, and reforestation. Recently, many non-Frankia actinobacteria have been isolated from actinorhizal root nodules suggesting that they might contribute to nodulation. Two Nocardia strains, BMG51109 and BMG111209, were isolated from Casuarina glauca nodules, and they induced root nodule-like structures in original host plant promoting seedling growth. The formed root nodule-like structures lacked a nodular root at the apex, were not capable of reducing nitrogen and had their cortical cells occupied with rod-shaped Nocardiae cells. Both Nocardia strains induced root hair deformation on the host plant. BMG111209 strain induced the expression of the ProCgNin:Gus gene, a plant gene involved in the early steps of the infection process and nodulation development. Nocardia strain BMG51109 produced three types of auxins (Indole-3-acetic acid [IAA], Indole-3-Byturic Acid [IBA] and Phenyl Acetic Acid [PAA]), while Nocardia BMG111209 only produced IAA. Analysis of the Nocardia genomes identified several important predicted biosynthetic gene clusters for plant phytohormones, secondary metabolites, and novel natural products. Co-infection studies showed that Nocardia strain BMG51109 plays a role as a "helper bacteria" promoting an earlier onset of nodulation. This study raises many questions on the ecological significance and functionality of Nocardia bacteria in actinorhizal symbioses.
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Affiliation(s)
- Faten Ghodhbane-Gtari
- Laboratoire Microorganismes et Biomolécules Actives, Université Tunis El Manar (FST) & Université Carthage (INSAT), Campus universitaire, 2092, Tunis, Tunisia
| | - Imen Nouioui
- Laboratoire Microorganismes et Biomolécules Actives, Université Tunis El Manar (FST) & Université Carthage (INSAT), Campus universitaire, 2092, Tunis, Tunisia
| | - Karima Hezbri
- Laboratoire Microorganismes et Biomolécules Actives, Université Tunis El Manar (FST) & Université Carthage (INSAT), Campus universitaire, 2092, Tunis, Tunisia
| | - Emily Lundstedt
- Department of Molecular, Cellular, and Biomedical Sciences, University of New Hampshire, Durham, NH, USA
| | - Timothy D'Angelo
- Department of Molecular, Cellular, and Biomedical Sciences, University of New Hampshire, Durham, NH, USA
| | - Zakkary McNutt
- Department of Molecular, Cellular, and Biomedical Sciences, University of New Hampshire, Durham, NH, USA
| | - Laurent Laplaze
- LSTM, UMR 040 IRD/INRA/CIRAD/ Université Montpellier/Supagro, TA A-82/J, Campus International de Baillarguet, 34398, Montpellier, CDX 5, France
- LCM, IRD/ISRA/UCAD, Centre de Recherche de Bel Air, BP 1386, Dakar, Senegal
- LMI LAPSE, Centre de Recherche de Bel Air, BP 1386, Dakar, Senegal
| | - Hassen Gherbi
- LSTM, UMR 040 IRD/INRA/CIRAD/ Université Montpellier/Supagro, TA A-82/J, Campus International de Baillarguet, 34398, Montpellier, CDX 5, France
| | - Virginie Vaissayre
- ECOBIO, French National Research Institute for Sustainable Development (IRD), Montpellier, France
| | - Sergio Svistoonoff
- LSTM, UMR 040 IRD/INRA/CIRAD/ Université Montpellier/Supagro, TA A-82/J, Campus International de Baillarguet, 34398, Montpellier, CDX 5, France
- LCM, IRD/ISRA/UCAD, Centre de Recherche de Bel Air, BP 1386, Dakar, Senegal
- LMI LAPSE, Centre de Recherche de Bel Air, BP 1386, Dakar, Senegal
| | - Hela Ben Ahmed
- Unité d'Ecophysiologie et Nutrition des plantes, Département de Biologie, Faculté des Sciences de Tunis, Tunis, Tunisia
| | - Abdelatif Boudabous
- Laboratoire Microorganismes et Biomolécules Actives, Université Tunis El Manar (FST) & Université Carthage (INSAT), Campus universitaire, 2092, Tunis, Tunisia
| | - Louis S Tisa
- Department of Molecular, Cellular, and Biomedical Sciences, University of New Hampshire, Durham, NH, USA.
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Diédhiou I, Diouf D. Transcription factors network in root endosymbiosis establishment and development. World J Microbiol Biotechnol 2018; 34:37. [PMID: 29450655 DOI: 10.1007/s11274-018-2418-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 01/29/2018] [Indexed: 11/29/2022]
Abstract
Root endosymbioses are mutualistic interactions between plants and the soil microorganisms (Fungus, Frankia or Rhizobium) that lead to the formation of nitrogen-fixing root nodules and/or arbuscular mycorrhiza. These interactions enable many species to survive in different marginal lands to overcome the nitrogen-and/or phosphorus deficient environment and can potentially reduce the chemical fertilizers used in agriculture which gives them an economic, social and environmental importance. The formation and the development of these structures require the mediation of specific gene products among which the transcription factors play a key role. Three of these transcription factors, viz., CYCLOPS, NSP1 and NSP2 are well conserved between actinorhizal, legume, non-legume and mycorrhizal symbioses. They interact with DELLA proteins to induce the expression of NIN in nitrogen fixing symbiosis or RAM1 in mycorrhizal symbiosis. Recently, the small non coding RNA including micro RNAs (miRNAs) have emerged as major regulators of root endosymbioses. Among them, miRNA171 targets NSP2, a TF conserved in actinorhizal, legume, non-legume and mycorrhizal symbioses. This review will also focus on the recent advances carried out on the biological function of others transcription factors during the root pre-infection/pre-contact, infection or colonization. Their role in nodule formation and AM development will also be described.
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Affiliation(s)
- Issa Diédhiou
- Laboratoire Campus de Biotecnologies Végétales, Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, Dakar-Fann, Senegal.
| | - Diaga Diouf
- Laboratoire Campus de Biotecnologies Végétales, Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, Dakar-Fann, Senegal
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10
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Ngom M, Gray K, Diagne N, Oshone R, Fardoux J, Gherbi H, Hocher V, Svistoonoff S, Laplaze L, Tisa LS, Sy MO, Champion A. Symbiotic Performance of Diverse Frankia Strains on Salt-Stressed Casuarina glauca and Casuarina equisetifolia Plants. FRONTIERS IN PLANT SCIENCE 2016; 7:1331. [PMID: 27630656 PMCID: PMC5006599 DOI: 10.3389/fpls.2016.01331] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 08/18/2016] [Indexed: 05/29/2023]
Abstract
Symbiotic nitrogen-fixing associations between Casuarina trees and the actinobacteria Frankia are widely used in agroforestry in particular for salinized land reclamation. The aim of this study was to analyze the effects of salinity on the establishment of the actinorhizal symbiosis between C. glauca and two contrasting Frankia strains (salt sensitive; CcI3 vs. salt tolerant; CeD) and the role of these isolates in the salt tolerance of C. glauca and C. equisetifolia plants. We show that the number of root nodules decreased with increasing salinity levels in both plants inoculated with CcI3 and CeD. Nodule formation did not occur in seedlings inoculated with CcI3 and CeD, at NaCl concentrations above 100 and 200 mM, respectively. Salinity also affected the early deformation of plant root hairs and reduced their number and size. In addition, expression of symbiotic marker Cg12 gene, which codes for a subtilase, was reduced at 50 mM NaCl. These data suggest that the reduction of nodulation in C. glauca under salt stress is in part due to inhibition of early mechanisms of infection. We also show that prior inoculation of C. glauca and C. equisetifolia with Frankia strains CcI3 and CeD significantly improved plant height, dry biomass, chlorophyll and proline contents at all levels of salinity tested, depending on the Casuarina-Frankia association. There was no correlation between in vitro salt tolerance of Frankia strains and efficiency in planta under salt-stressed conditions. Our results strongly indicate that increased N nutrition, photosynthesis potential and proline accumulation are important factors responsible for salt tolerance of nodulated C. glauca and C. equisetifolia.
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Affiliation(s)
- Mariama Ngom
- Laboratoire Mixte International Adaptation des Plantes et microorganismes associés aux Stress Environnementaux, Centre de Recherche de Bel-AirDakar, Sénégal
- Laboratoire Campus de Biotechnologies Végétales, Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta DiopDakar, Sénégal
- Laboratoire Commun de Microbiologie Institut de Recherche pour le Développement/Institut Sénégalais de Recherches Agricoles/Université Cheikh Anta Diop, Centre de Recherche de Bel-AirDakar, Sénégal
| | - Krystelle Gray
- Laboratoire Mixte International Adaptation des Plantes et microorganismes associés aux Stress Environnementaux, Centre de Recherche de Bel-AirDakar, Sénégal
- Laboratoire Commun de Microbiologie Institut de Recherche pour le Développement/Institut Sénégalais de Recherches Agricoles/Université Cheikh Anta Diop, Centre de Recherche de Bel-AirDakar, Sénégal
- UMR DIADE, Institut de Recherche pour le DéveloppementMontpellier, France
| | - Nathalie Diagne
- Laboratoire Mixte International Adaptation des Plantes et microorganismes associés aux Stress Environnementaux, Centre de Recherche de Bel-AirDakar, Sénégal
- Centre National de Recherches Agronomiques, Institut Sénégalais de Recherches AgricolesBambey, Sénégal
| | - Rediet Oshone
- Department of Molecular, Cellular, and Biomedical Sciences, University of New HampshireDurham, NH, USA
| | - Joel Fardoux
- Laboratoire des Symbioses Tropicales et Méditerranéennes, Institut de Recherche pour le Développement/INRA/CIRAD/Université Montpellier/Sup agroMontpellier, France
| | - Hassen Gherbi
- Laboratoire des Symbioses Tropicales et Méditerranéennes, Institut de Recherche pour le Développement/INRA/CIRAD/Université Montpellier/Sup agroMontpellier, France
| | - Valérie Hocher
- Laboratoire des Symbioses Tropicales et Méditerranéennes, Institut de Recherche pour le Développement/INRA/CIRAD/Université Montpellier/Sup agroMontpellier, France
| | - Sergio Svistoonoff
- Laboratoire Mixte International Adaptation des Plantes et microorganismes associés aux Stress Environnementaux, Centre de Recherche de Bel-AirDakar, Sénégal
- Laboratoire Commun de Microbiologie Institut de Recherche pour le Développement/Institut Sénégalais de Recherches Agricoles/Université Cheikh Anta Diop, Centre de Recherche de Bel-AirDakar, Sénégal
- Laboratoire des Symbioses Tropicales et Méditerranéennes, Institut de Recherche pour le Développement/INRA/CIRAD/Université Montpellier/Sup agroMontpellier, France
| | - Laurent Laplaze
- Laboratoire Mixte International Adaptation des Plantes et microorganismes associés aux Stress Environnementaux, Centre de Recherche de Bel-AirDakar, Sénégal
- Laboratoire Commun de Microbiologie Institut de Recherche pour le Développement/Institut Sénégalais de Recherches Agricoles/Université Cheikh Anta Diop, Centre de Recherche de Bel-AirDakar, Sénégal
- UMR DIADE, Institut de Recherche pour le DéveloppementMontpellier, France
| | - Louis S. Tisa
- Department of Molecular, Cellular, and Biomedical Sciences, University of New HampshireDurham, NH, USA
| | - Mame O. Sy
- Laboratoire Mixte International Adaptation des Plantes et microorganismes associés aux Stress Environnementaux, Centre de Recherche de Bel-AirDakar, Sénégal
- Laboratoire Campus de Biotechnologies Végétales, Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta DiopDakar, Sénégal
| | - Antony Champion
- Laboratoire Mixte International Adaptation des Plantes et microorganismes associés aux Stress Environnementaux, Centre de Recherche de Bel-AirDakar, Sénégal
- UMR DIADE, Institut de Recherche pour le DéveloppementMontpellier, France
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11
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Boivin S, Fonouni-Farde C, Frugier F. How Auxin and Cytokinin Phytohormones Modulate Root Microbe Interactions. FRONTIERS IN PLANT SCIENCE 2016; 7:1240. [PMID: 27588025 PMCID: PMC4988986 DOI: 10.3389/fpls.2016.01240] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 08/04/2016] [Indexed: 05/08/2023]
Abstract
A large range of microorganisms can associate with plants, resulting in neutral, friendly or hostile interactions. The ability of plants to recognize compatible and incompatible microorganisms and to limit or promote their colonization is therefore crucial for their survival. Elaborated communication networks determine the degree of association between the host plant and the invading microorganism. Central to these regulations of plant microbe interactions, phytohormones modulate microorganism plant associations and coordinate cellular and metabolic responses associated to the progression of microorganisms across different plant tissues. We review here hormonal regulations, focusing on auxin and cytokinin phytohormones, involved in the interactions between plant roots and soil microorganisms, including bacterial and fungi associations, either beneficial (symbiotic) or detrimental (pathogenic). The aim is to highlight similarities and differences in cytokinin/auxin functions amongst various compatible versus incompatible associations.
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Affiliation(s)
| | | | - Florian Frugier
- Institute of Plant Sciences – Paris Saclay, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Université Paris-Sud, Université Paris Diderot, Université d’Evry, Université Paris-SaclayGif-sur-Yvette, France
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12
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Froussart E, Bonneau J, Franche C, Bogusz D. Recent advances in actinorhizal symbiosis signaling. PLANT MOLECULAR BIOLOGY 2016; 90:613-622. [PMID: 26873697 DOI: 10.1007/s11103-016-0450-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 02/05/2016] [Indexed: 06/05/2023]
Abstract
Nitrogen and phosphorus availability are frequent limiting factors in plant growth and development. Certain bacteria and fungi form root endosymbiotic relationships with plants enabling them to exploit atmospheric nitrogen and soil phosphorus. The relationships between bacteria and plants include nitrogen-fixing Gram-negative proteobacteria called rhizobia that are able to interact with most leguminous plants (Fabaceae) but also with the non-legume Parasponia (Cannabaceae), and actinobacteria Frankia, which are able to interact with about 260 species collectively called actinorhizal plants. Fungi involved in the relationship with plants include Glomeromycota that form an arbuscular mycorrhizal (AM) association intracellularly within the roots of more than 80% of land plants. Increasing numbers of reports suggest that the rhizobial association with legumes has recycled part of the ancestral program used by most plants to interact with AM fungi. This review focuses on the most recent progress made in plant genetic control of root nodulation that occurs in non-legume actinorhizal plant species.
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Affiliation(s)
- Emilie Froussart
- Equipe Rhizogenèse, UMR DIADE (IRD-UM), Institut de Recherche pour le Développement (IRD), 911 avenue Agropolis, BP 64501, 34394, Montpellier Cedex 5, France
| | - Jocelyne Bonneau
- Equipe Rhizogenèse, UMR DIADE (IRD-UM), Institut de Recherche pour le Développement (IRD), 911 avenue Agropolis, BP 64501, 34394, Montpellier Cedex 5, France
| | - Claudine Franche
- Equipe Rhizogenèse, UMR DIADE (IRD-UM), Institut de Recherche pour le Développement (IRD), 911 avenue Agropolis, BP 64501, 34394, Montpellier Cedex 5, France.
| | - Didier Bogusz
- Equipe Rhizogenèse, UMR DIADE (IRD-UM), Institut de Recherche pour le Développement (IRD), 911 avenue Agropolis, BP 64501, 34394, Montpellier Cedex 5, France
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13
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Biotechnological strategies for studying actinorhizal symbiosis in Casuarinaceae: transgenesis and beyond. Symbiosis 2016. [DOI: 10.1007/s13199-016-0400-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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Nizampatnam NR, Schreier SJ, Damodaran S, Adhikari S, Subramanian S. microRNA160 dictates stage-specific auxin and cytokinin sensitivities and directs soybean nodule development. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2015; 84:140-53. [PMID: 26287653 DOI: 10.1111/tpj.12965] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 07/31/2015] [Accepted: 08/13/2015] [Indexed: 05/20/2023]
Abstract
Legume nodules result from coordinated interactions between the plant and nitrogen-fixing rhizobia. The phytohormone cytokinin promotes nodule formation, and recent findings suggest that the phytohormone auxin inhibits nodule formation. Here we show that microRNA160 (miR160) is a key signaling element that determines the auxin/cytokinin balance during nodule development in soybean (Glycine max). miR160 appears to promote auxin activity by suppressing the levels of the ARF10/16/17 family of repressor ARF transcription factors. Using quantitative PCR assays and a fluorescence miRNA sensor, we show that miR160 levels are relatively low early during nodule formation and high in mature nodules. We had previously shown that ectopic expression of miR160 in soybean roots led to a severe reduction in nodule formation, coupled with enhanced sensitivity to auxin and reduced sensitivity to cytokinin. Here we show that exogenous cytokinin restores nodule formation in miR160 over-expressing roots. Therefore, low miR160 levels early during nodule development favor cytokinin activity required for nodule formation. Suppression of miR160 levels using a short tandem target mimic (STTM160) resulted in reduced sensitivity to auxin and enhanced sensitivity to cytokinin. In contrast to miR160 over-expressing roots, STTM160 roots had increased nodule formation, but nodule maturation was significantly delayed. Exogenous auxin partially restored proper nodule formation and maturation in STTM160 roots, suggesting that high miR160 activity later during nodule development favors auxin activity and promotes nodule maturation. Therefore, miR160 dictates developmental stage-specific sensitivities to auxin and cytokinin to direct proper nodule formation and maturation in soybean.
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Affiliation(s)
| | - Spencer John Schreier
- Department of Biology and Microbiology, South Dakota State University, Brookings, SD, 57007, USA
| | - Suresh Damodaran
- Department of Plant Science, South Dakota State University, Brookings, SD, 57007, USA
| | - Sajag Adhikari
- Department of Plant Science, South Dakota State University, Brookings, SD, 57007, USA
| | - Senthil Subramanian
- Department of Plant Science, South Dakota State University, Brookings, SD, 57007, USA
- Department of Biology and Microbiology, South Dakota State University, Brookings, SD, 57007, USA
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15
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Ng JLP, Perrine-Walker F, Wasson AP, Mathesius U. The Control of Auxin Transport in Parasitic and Symbiotic Root-Microbe Interactions. PLANTS (BASEL, SWITZERLAND) 2015; 4:606-43. [PMID: 27135343 PMCID: PMC4844411 DOI: 10.3390/plants4030606] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 08/12/2015] [Accepted: 08/18/2015] [Indexed: 01/13/2023]
Abstract
Most field-grown plants are surrounded by microbes, especially from the soil. Some of these, including bacteria, fungi and nematodes, specifically manipulate the growth and development of their plant hosts, primarily for the formation of structures housing the microbes in roots. These developmental processes require the correct localization of the phytohormone auxin, which is involved in the control of cell division, cell enlargement, organ development and defense, and is thus a likely target for microbes that infect and invade plants. Some microbes have the ability to directly synthesize auxin. Others produce specific signals that indirectly alter the accumulation of auxin in the plant by altering auxin transport. This review highlights root-microbe interactions in which auxin transport is known to be targeted by symbionts and parasites to manipulate the development of their host root system. We include case studies for parasitic root-nematode interactions, mycorrhizal symbioses as well as nitrogen fixing symbioses in actinorhizal and legume hosts. The mechanisms to achieve auxin transport control that have been studied in model organisms include the induction of plant flavonoids that indirectly alter auxin transport and the direct targeting of auxin transporters by nematode effectors. In most cases, detailed mechanisms of auxin transport control remain unknown.
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Affiliation(s)
- Jason Liang Pin Ng
- Division of Plant Science, Research School of Biology, Australian National University, Linnaeus Way, Building 134, Canberra ACT 2601, Australia.
| | | | | | - Ulrike Mathesius
- Division of Plant Science, Research School of Biology, Australian National University, Linnaeus Way, Building 134, Canberra ACT 2601, Australia.
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