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Martin FM, van der Heijden MGA. The mycorrhizal symbiosis: research frontiers in genomics, ecology, and agricultural application. THE NEW PHYTOLOGIST 2024; 242:1486-1506. [PMID: 38297461 DOI: 10.1111/nph.19541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 12/07/2023] [Indexed: 02/02/2024]
Abstract
Mycorrhizal symbioses between plants and fungi are vital for the soil structure, nutrient cycling, plant diversity, and ecosystem sustainability. More than 250 000 plant species are associated with mycorrhizal fungi. Recent advances in genomics and related approaches have revolutionized our understanding of the biology and ecology of mycorrhizal associations. The genomes of 250+ mycorrhizal fungi have been released and hundreds of genes that play pivotal roles in regulating symbiosis development and metabolism have been characterized. rDNA metabarcoding and metatranscriptomics provide novel insights into the ecological cues driving mycorrhizal communities and functions expressed by these associations, linking genes to ecological traits such as nutrient acquisition and soil organic matter decomposition. Here, we review genomic studies that have revealed genes involved in nutrient uptake and symbiosis development, and discuss adaptations that are fundamental to the evolution of mycorrhizal lifestyles. We also evaluated the ecosystem services provided by mycorrhizal networks and discuss how mycorrhizal symbioses hold promise for sustainable agriculture and forestry by enhancing nutrient acquisition and stress tolerance. Overall, unraveling the intricate dynamics of mycorrhizal symbioses is paramount for promoting ecological sustainability and addressing current pressing environmental concerns. This review ends with major frontiers for further research.
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Affiliation(s)
- Francis M Martin
- Université de Lorraine, INRAE, UMR IAM, Champenoux, 54280, France
- Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Marcel G A van der Heijden
- Department of Agroecology & Environment, Plant-Soil Interactions, Agroscope, Zürich, 8046, Switzerland
- Department of Plant and Microbial Biology, University of Zürich, Zürich, 8057, Switzerland
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2
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Gómez-Gallego T, Molina-Luzón MJ, Conéjéro G, Berthomieu P, Ferrol N. The arbuscular mycorrhizal fungus Rhizophagus irregularis uses the copper exporting ATPase RiCRD1 as a major strategy for copper detoxification. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 341:122990. [PMID: 37992950 DOI: 10.1016/j.envpol.2023.122990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 11/10/2023] [Accepted: 11/16/2023] [Indexed: 11/24/2023]
Abstract
Arbuscular mycorrhizal (AM) fungi establish a mutualistic symbiosis with most land plants. AM fungi regulate plant copper (Cu) acquisition both in Cu deficient and polluted soils. Here, we report characterization of RiCRD1, a Rhizophagus irregularis gene putatively encoding a Cu transporting ATPase. Based on its sequence analysis, RiCRD1 was identified as a plasma membrane Cu + efflux protein of the P1B1-ATPase subfamily. As revealed by heterologous complementation assays in yeast, RiCRD1 encodes a functional protein capable of conferring increased tolerance against Cu. In the extraradical mycelium, RiCRD1 expression was highly up-regulated in response to high concentrations of Cu in the medium. Comparison of the expression patterns of different players of metal tolerance in R. irregularis under high Cu levels suggests that this fungus could mainly use a metal efflux based-strategy to cope with Cu toxicity. RiCRD1 was also expressed in the intraradical fungal structures and, more specifically, in the arbuscules, which suggests a role for RiCRD1 in Cu release from the fungus to the symbiotic interface. Overall, our results show that RiCRD1 encodes a protein which could have a pivotal dual role in Cu homeostasis in R. irregularis, playing a role in Cu detoxification in the extraradical mycelium and in Cu transfer to the apoplast of the symbiotic interface in the arbuscules.
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Affiliation(s)
- Tamara Gómez-Gallego
- Soil and Plant Microbiology Department, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, Granada, Spain
| | - María Jesús Molina-Luzón
- Soil and Plant Microbiology Department, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, Granada, Spain
| | - Genevieve Conéjéro
- Institut des Sciences des Plantes de Montpellier, Université de Montpellier, Centre National de la Recherche Scientifique, Institut Agro Montpellier, Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement, Montpellier, France
| | - Pierre Berthomieu
- Institut des Sciences des Plantes de Montpellier, Université de Montpellier, Centre National de la Recherche Scientifique, Institut Agro Montpellier, Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement, Montpellier, France
| | - Nuria Ferrol
- Soil and Plant Microbiology Department, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, Granada, Spain.
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3
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Lanfranco L, Bonfante P. Lessons from arbuscular mycorrhizal fungal genomes. Curr Opin Microbiol 2023; 75:102357. [PMID: 37419003 DOI: 10.1016/j.mib.2023.102357] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/15/2023] [Accepted: 06/15/2023] [Indexed: 07/09/2023]
Abstract
Arbuscular mycorrhizal fungi (AMF) have accompanied the majority of land plants since their evolution in the Devonian period with a symbiotic alliance centered on nutrient exchanges. The exploration of AMF genomes is providing clues to explain major questions about their biology, evolution, and ecology. The dynamics of nuclei across the fungal life cycle, the abundance of transposable elements, and the epigenome landscape are emerging as sources of intraspecific variability, which can be especially important in organisms with no or rare sexual reproduction such as AMF. These features have been hypothesized to support AMF adaptability to a wide host range and to environmental changes. New insights on plant-fungus communication and on the iconic function of phosphate transport were also recently obtained that overall contribute to a better understanding of this ancient and fascinating symbiosis.
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Affiliation(s)
- Luisa Lanfranco
- Department of Life Sciences and Systems Biology, University of Turin, Viale Mattioli 25, 10125 Turin, Italy.
| | - Paola Bonfante
- Department of Life Sciences and Systems Biology, University of Turin, Viale Mattioli 25, 10125 Turin, Italy
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4
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Mesny F, Hacquard S, Thomma BPHJ. Co-evolution within the plant holobiont drives host performance. EMBO Rep 2023; 24:e57455. [PMID: 37471099 PMCID: PMC10481671 DOI: 10.15252/embr.202357455] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/28/2023] [Accepted: 07/06/2023] [Indexed: 07/21/2023] Open
Abstract
Plants interact with a diversity of microorganisms that influence their growth and resilience, and they can therefore be considered as ecological entities, namely "plant holobionts," rather than as singular organisms. In a plant holobiont, the assembly of above- and belowground microbiota is ruled by host, microbial, and environmental factors. Upon microorganism perception, plants activate immune signaling resulting in the secretion of factors that modulate microbiota composition. Additionally, metabolic interdependencies and antagonism between microbes are driving forces for community assemblies. We argue that complex plant-microbe and intermicrobial interactions have been selected for during evolution and may promote the survival and fitness of plants and their associated microorganisms as holobionts. As part of this process, plants evolved metabolite-mediated strategies to selectively recruit beneficial microorganisms in their microbiota. Some of these microbiota members show host-adaptation, from which mutualism may rapidly arise. In the holobiont, microbiota members also co-evolved antagonistic activities that restrict proliferation of microbes with high pathogenic potential and can therefore prevent disease development. Co-evolution within holobionts thus ultimately drives plant performance.
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Affiliation(s)
- Fantin Mesny
- Institute for Plant SciencesUniversity of CologneCologneGermany
| | - Stéphane Hacquard
- Department of Plant Microbe InteractionsMax Planck Institute for Plant Breeding ResearchCologneGermany
- Cluster of Excellence on Plant Sciences (CEPLAS)CologneGermany
| | - Bart PHJ Thomma
- Institute for Plant SciencesUniversity of CologneCologneGermany
- Cluster of Excellence on Plant Sciences (CEPLAS)CologneGermany
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5
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Kelliher JM, Robinson AJ, Longley R, Johnson LYD, Hanson BT, Morales DP, Cailleau G, Junier P, Bonito G, Chain PSG. The endohyphal microbiome: current progress and challenges for scaling down integrative multi-omic microbiome research. MICROBIOME 2023; 11:192. [PMID: 37626434 PMCID: PMC10463477 DOI: 10.1186/s40168-023-01634-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 07/29/2023] [Indexed: 08/27/2023]
Abstract
As microbiome research has progressed, it has become clear that most, if not all, eukaryotic organisms are hosts to microbiomes composed of prokaryotes, other eukaryotes, and viruses. Fungi have only recently been considered holobionts with their own microbiomes, as filamentous fungi have been found to harbor bacteria (including cyanobacteria), mycoviruses, other fungi, and whole algal cells within their hyphae. Constituents of this complex endohyphal microbiome have been interrogated using multi-omic approaches. However, a lack of tools, techniques, and standardization for integrative multi-omics for small-scale microbiomes (e.g., intracellular microbiomes) has limited progress towards investigating and understanding the total diversity of the endohyphal microbiome and its functional impacts on fungal hosts. Understanding microbiome impacts on fungal hosts will advance explorations of how "microbiomes within microbiomes" affect broader microbial community dynamics and ecological functions. Progress to date as well as ongoing challenges of performing integrative multi-omics on the endohyphal microbiome is discussed herein. Addressing the challenges associated with the sample extraction, sample preparation, multi-omic data generation, and multi-omic data analysis and integration will help advance current knowledge of the endohyphal microbiome and provide a road map for shrinking microbiome investigations to smaller scales. Video Abstract.
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Affiliation(s)
| | | | - Reid Longley
- Los Alamos National Laboratory, Los Alamos, NM, USA
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6
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Manley BF, Lotharukpong JS, Barrera-Redondo J, Llewellyn T, Yildirir G, Sperschneider J, Corradi N, Paszkowski U, Miska EA, Dallaire A. A highly contiguous genome assembly reveals sources of genomic novelty in the symbiotic fungus Rhizophagus irregularis. G3 (BETHESDA, MD.) 2023; 13:jkad077. [PMID: 36999556 PMCID: PMC10234402 DOI: 10.1093/g3journal/jkad077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 03/17/2023] [Indexed: 06/02/2023]
Abstract
The root systems of most plant species are aided by the soil-foraging capacities of symbiotic arbuscular mycorrhizal (AM) fungi of the Glomeromycotina subphylum. Despite recent advances in our knowledge of the ecology and molecular biology of this mutualistic symbiosis, our understanding of the AM fungi genome biology is just emerging. Presented here is a close to T2T genome assembly of the model AM fungus Rhizophagus irregularis DAOM197198, achieved through Nanopore long-read DNA sequencing and Hi-C data. This haploid genome assembly of R. irregularis, alongside short- and long-read RNA-Sequencing data, was used to produce a comprehensive annotation catalog of gene models, repetitive elements, small RNA loci, and DNA cytosine methylome. A phylostratigraphic gene age inference framework revealed that the birth of genes associated with nutrient transporter activity and transmembrane ion transport systems predates the emergence of Glomeromycotina. While nutrient cycling in AM fungi relies on genes that existed in ancestor lineages, a burst of Glomeromycotina-restricted genetic innovation is also detected. Analysis of the chromosomal distribution of genetic and epigenetic features highlights evolutionarily young genomic regions that produce abundant small RNAs, suggesting active RNA-based monitoring of genetic sequences surrounding recently evolved genes. This chromosome-scale view of the genome of an AM fungus genome reveals previously unexplored sources of genomic novelty in an organism evolving under an obligate symbiotic life cycle.
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Affiliation(s)
- Bethan F Manley
- SPUN|Society for the Protection of Underground Networks, 3500 South DuPont Highway, Suite EI-101, Dover, DE 19901, USA
- Gurdon Institute, University of Cambridge, Cambridge CB2 1QN, UK
| | - Jaruwatana S Lotharukpong
- Department of Algal Development and Evolution, Max Planck Institute for Biology, Max-Planck-Ring 5, Tübingen 72076, Germany
| | - Josué Barrera-Redondo
- Department of Algal Development and Evolution, Max Planck Institute for Biology, Max-Planck-Ring 5, Tübingen 72076, Germany
| | - Theo Llewellyn
- Comparative Fungal Biology, Royal Botanic Gardens Kew, Jodrell Laboratory, Richmond TW9 3DS, UK
- Department of Life Sciences, Imperial College London, London SW7 2AZ, UK
| | - Gokalp Yildirir
- Department of Biology, University of Ottawa, Ottawa, ON, Canada K1N 6N5
| | - Jana Sperschneider
- Agriculture and Food, Commonwealth Scientific and Industrial Research Organisation, Canberra, ACT 2601, Australia
| | - Nicolas Corradi
- Department of Biology, University of Ottawa, Ottawa, ON, Canada K1N 6N5
| | - Uta Paszkowski
- Crop Science Centre, Department of Plant Sciences, University of Cambridge, Cambridge CB3 0LE, UK
| | - Eric A Miska
- Gurdon Institute, University of Cambridge, Cambridge CB2 1QN, UK
- Department of Biochemistry, University of Cambridge, Tennis Court Road, Cambridge CB2 1QW, UK
| | - Alexandra Dallaire
- Gurdon Institute, University of Cambridge, Cambridge CB2 1QN, UK
- Comparative Fungal Biology, Royal Botanic Gardens Kew, Jodrell Laboratory, Richmond TW9 3DS, UK
- Department of Biochemistry, University of Cambridge, Tennis Court Road, Cambridge CB2 1QW, UK
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7
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Rich M. Phylogenomics reveal that plants colonized land together with their fungal symbiotic partners. C R Biol 2023; 346:1-11. [PMID: 37254793 DOI: 10.5802/crbiol.105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 12/07/2022] [Indexed: 06/01/2023]
Abstract
Most extant land plants establish a mutually beneficial relationship with soil fungi called mycorrhizal symbiosis. From their partners, plants get access to mineral nutrient and water resources transported via a fungal network that acts like an extension of their root systems. Using genetic and molecular tools, we showed that distant plant species use similar molecular mechanisms during the symbiosis. This similarity suggests that those mechanisms were inherited from their last common ancestor, a lineage that emerged from an aquatic environment 450 million years ago. Thus, this plant fungal interaction could have helped the first land plants without structures adapted to soil exploration to survive and colonize this new environment.
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8
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Secrets of the fungus-specific potassium channel TOK family. Trends Microbiol 2022; 31:511-520. [PMID: 36567187 DOI: 10.1016/j.tim.2022.11.007] [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: 10/15/2022] [Revised: 11/16/2022] [Accepted: 11/18/2022] [Indexed: 12/25/2022]
Abstract
Several families of potassium (K+) channels are found in membranes of all eukaryotes, underlining the importance of K+ uptake and redistribution within and between cells and organs. Among them, TOK (tandem-pore outward-rectifying K+) channels consist of eight transmembrane domains and two pore domains per subunit organized in dimers. These channels were originally studied in yeast, but recent identifications and characterizations in filamentous fungi shed new light on this fungus-specific K+ channel family. Although their actual function in vivo is often puzzling, recent works indicate a role in cellular K+ homeostasis and even suggest a role in plant-fungus symbioses. This review aims at synthesizing the current knowledge on fungal TOK channels and discussing their potential role in yeasts and filamentous fungi.
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9
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Sahraei SE, Sánchez-García M, Montoliu-Nerin M, Manyara D, Bergin C, Rosendahl S, Rosling A. Whole genome analyses based on single, field collected spores of the arbuscular mycorrhizal fungus Funneliformis geosporum. MYCORRHIZA 2022; 32:361-371. [PMID: 36161535 PMCID: PMC9560946 DOI: 10.1007/s00572-022-01091-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/13/2022] [Indexed: 06/02/2023]
Abstract
Arbuscular mycorrhizal (AM) fungi are ubiquitous mutualistic symbionts of most terrestrial plants and many complete their lifecycles underground. Whole genome analysis of AM fungi has long been restricted to species and strains that can be maintained under controlled conditions that facilitate collection of biological samples. There is some evidence suggesting that AM fungi can adapt to culture resulting in phenotypic and possibly also genotypic changes in the fungi. In this study, we used field isolated spores of AM fungi and identified them as Funneliformis geosporum based on morphology and phylogenetic analyses. We separately assembled the genomes of two representative spores using DNA sequences of 19 and 22 individually amplified nuclei. The genomes were compared with previously published data from other members of Glomeraceae including two strains of F. mosseae. No significant differences were observed among the species in terms of gene content, while the single nucleotide polymorphism density was higher in the strains of F. geosporum than in the strains of F. mosseae. In this study, we demonstrate that it is possible to sequence and assemble genomes from AM fungal spores sampled in the field, which opens up the possibility to include uncultured AM fungi in phylogenomic and comparative genomic analysis and to study genomic variation in natural populations of these important plant symbionts.
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Affiliation(s)
| | - Marisol Sánchez-García
- Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden
- Department of Forest Mycology and Plant Pathology, Uppsala Biocentre, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Merce Montoliu-Nerin
- Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, Sweden
| | - David Manyara
- Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden
| | - Claudia Bergin
- Microbial Single Cell Genomics Facility, Department of Cell and Molecular Biology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Søren Rosendahl
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Anna Rosling
- Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden.
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10
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Kameoka H, Gutjahr C. Functions of Lipids in Development and Reproduction of Arbuscular Mycorrhizal Fungi. PLANT & CELL PHYSIOLOGY 2022; 63:1356-1365. [PMID: 35894593 PMCID: PMC9620820 DOI: 10.1093/pcp/pcac113] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 07/18/2022] [Accepted: 07/25/2022] [Indexed: 06/10/2023]
Abstract
Arbuscular mycorrhizal fungi (AMF) form mutualistic associations with most land plants. The symbiosis is based on the exchange of nutrients: AMF receive photosynthetically fixed carbon from the plants and deliver mineral nutrients in return. Lipids are important players in the symbiosis. They act as components of the plant-derived membrane surrounding arbuscules, as carbon sources transferred from plants to AMF, as a major form of carbon storage in AMF and as triggers of developmental responses in AMF. In this review, we describe the role of lipids in arbuscular mycorrhizal symbiosis and AMF development.
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Affiliation(s)
- Hiromu Kameoka
- *Corresponding authors: Hiromu Kameoka, E-mail, ; Caroline Gutjahr, E-mail,
| | - Caroline Gutjahr
- *Corresponding authors: Hiromu Kameoka, E-mail, ; Caroline Gutjahr, E-mail,
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11
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Li T, Liu T, Zhao Z, Pan Y, Xu X, Zhang Y, Zhan S, Zhou S, Zhu W, Guo H, Yang R. Antifungal immunity mediated by C-type lectin receptors may be a novel target in immunotherapy for urothelial bladder cancer. Front Immunol 2022; 13:911325. [PMID: 36131933 PMCID: PMC9483128 DOI: 10.3389/fimmu.2022.911325] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 07/18/2022] [Indexed: 11/29/2022] Open
Abstract
Immunotherapies, such as immune-checkpoint blockade and adoptive T-cell therapy, offer novel treatment options with good efficacy for patients with urothelial bladder cancer. However, heterogeneity and therapeutic resistance have limited the use of immunotherapy. Further research into immune-regulatory mechanisms in bladder cancer is urgently required. Emerging evidence demonstrates that the commensal microbiota and its interactions with host immunity play pivotal roles in a variety of physiological and pathological processes, including in cancer. The gut microbiota has been identified as a potentially effective target of treatment that can be synergized with immunotherapy. The urothelial tract is also a key site for multiple microbes, although the immune-regulatory role of the urinary microbiome in the process of carcinogenesis of bladder cancer remains to be elucidated. We performed a comprehensive analysis of the expression and biological functions of C-type lectin receptors (CLRs), which have been recognized as innate pathogen-associated receptors for fungal microbiota, in bladder cancer. In line with previous research on fungal colonization of the urothelial tract, we found that CLRs, including Dectin-1, Dectin-2, Dectin-3, and macrophage-inducible Ca2+-dependent lectin receptor (Mincle), had a significant association with immune infiltration in bladder cancer. Multiple innate and adaptive pathways are positively correlated with the upregulation of CLRs. In addition, we found a significant correlation between the expression of CLRs and a range of immune-checkpoint proteins in bladder cancer. Based on previous studies and our findings, we hypothesize that the urinary mycobiome plays a key role in the pathogenesis of bladder cancer and call for more research on CLR-mediated anti-fungal immunity against bladder cancer as a novel target for immunotherapy in urothelial bladder cancer.
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Affiliation(s)
- Tianhang Li
- Department of Urology, Affiliated Nanjing Drum Tower Hospital, Medical School, Nanjing University, Nanjing, China
| | - Tianyao Liu
- Department of Urology, Affiliated Nanjing Drum Tower Hospital, Medical School, Nanjing University, Nanjing, China
| | - Zihan Zhao
- Department of Urology, Affiliated Nanjing Drum Tower Hospital, Medical School, Nanjing University, Nanjing, China
| | - Yuchen Pan
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China
| | - Xinyan Xu
- Department of Urology, Affiliated Nanjing Drum Tower Hospital, Medical School, Nanjing University, Nanjing, China
| | - Yulin Zhang
- Department of Urology, Affiliated Nanjing Drum Tower Hospital, Medical School, Nanjing University, Nanjing, China
| | - Shoubin Zhan
- Jiangsu Engineering Research Center for microRNA Biology and Biotechnology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Shengkai Zhou
- Jiangsu Engineering Research Center for microRNA Biology and Biotechnology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Wenjie Zhu
- Department of Urology, Affiliated Nanjing Drum Tower Hospital, Medical School, Nanjing University, Nanjing, China
| | - Hongqian Guo
- Department of Urology, Affiliated Nanjing Drum Tower Hospital, Medical School, Nanjing University, Nanjing, China
- *Correspondence: Rong Yang, ; Hongqian Guo,
| | - Rong Yang
- Department of Urology, Affiliated Nanjing Drum Tower Hospital, Medical School, Nanjing University, Nanjing, China
- *Correspondence: Rong Yang, ; Hongqian Guo,
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12
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Puginier C, Keller J, Delaux PM. Plant-microbe interactions that have impacted plant terrestrializations. PLANT PHYSIOLOGY 2022; 190:72-84. [PMID: 35642902 PMCID: PMC9434271 DOI: 10.1093/plphys/kiac258] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 05/09/2022] [Indexed: 05/30/2023]
Abstract
Plants display a tremendous diversity of developmental and physiological features, resulting from gains and losses of functional innovations across the plant phylogeny. Among those, the most impactful have been undoubtedly the ones that allowed plant terrestrializations, the transitions from an aquatic to a terrestrial environment. Although the embryophyte terrestrialization has been particularly scrutinized, others occurred across the plant phylogeny with the involvement of mutualistic symbioses as a common theme. Here, we review the current pieces of evidence supporting that the repeated colonization of land by plants has been facilitated by interactions with mutualistic symbionts. In that context, we detail two of these mutualistic symbioses: the arbuscular mycorrhizal symbiosis in embryophytes and the lichen symbiosis in chlorophyte algae. We suggest that associations with bacteria should be revisited in that context, and we propose that overlooked symbioses might have facilitated the emergence of other land plant clades.
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Affiliation(s)
- Camille Puginier
- Laboratoire de Recherche en Sciences Végétales (LRSV), Université de Toulouse, CNRS, UPS, INP Toulouse, Castanet-Tolosan, 31326, France
| | - Jean Keller
- Laboratoire de Recherche en Sciences Végétales (LRSV), Université de Toulouse, CNRS, UPS, INP Toulouse, Castanet-Tolosan, 31326, France
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13
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Malar C M, Wang Y, Stajich JE, Kokkoris V, Villeneuve-Laroche M, Yildirir G, Corradi N. Early branching arbuscular mycorrhizal fungus Paraglomus occultum carries a small and repeat-poor genome compared to relatives in the Glomeromycotina. Microb Genom 2022; 8. [PMID: 35451944 PMCID: PMC9453076 DOI: 10.1099/mgen.0.000810] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The arbuscular mycorrhizal fungi (AMFs) are obligate root symbionts in the subphylum Glomeromycotina that can benefit land plants by increasing their soil nutrient uptake in exchange for photosynthetically fixed carbon sources. To date, annotated genome data from representatives of the AMF orders Glomerales, Diversisporales and Archaeosporales have shown that these organisms have large and highly repeated genomes, and no genes to produce sugars and fatty acids. This led to the hypothesis that the most recent common ancestor (MRCA) of Glomeromycotina was fully dependent on plants for nutrition. Here, we aimed to further test this hypothesis by obtaining annotated genome data from a member of the early diverging order Paraglomerales (Paraglomus occultum). Genome analyses showed this species carries a 39.6 Mb genome and considerably fewer genes and repeats compared to most AMF relatives with annotated genomes. Consistent with phylogenies based on ribosomal genes, our phylogenetic analyses suggest P. occultum as the earliest diverged branch within Glomeromycotina. Overall, our analyses support the view that the MRCA of Glomeromycotina carried hallmarks of obligate plant biotrophy. The small genome size and content of P. occultum could either reflect adaptive reductive processes affecting some early AMF lineages, or indicate that the high gene and repeat family diversity thought to drive AMF adaptability to host and environmental change was not an ancestral feature of these prominent plant symbionts.
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Affiliation(s)
- Mathu Malar C
- Department of Biology, University of Ottawa, Ottawa, ON K1N 6N5, Canada
| | - Yan Wang
- Department of Biological Sciences, University of Toronto Scarborough, Toronto, Canada.,Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Canada
| | - Jason E Stajich
- Department of Microbiology and Plant Pathology, University of California-Riverside, Riverside, CA, USA.,Institute for Integrative Genome Biology, University of California-Riverside, Riverside, CA, USA
| | - Vasilis Kokkoris
- Department of Biology, University of Ottawa, Ottawa, ON K1N 6N5, Canada
| | | | - Gokalp Yildirir
- Department of Biology, University of Ottawa, Ottawa, ON K1N 6N5, Canada
| | - Nicolas Corradi
- Department of Biology, University of Ottawa, Ottawa, ON K1N 6N5, Canada
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14
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Aguilera P, Becerra N, Alvear M, Ortiz N, Turrini A, Azcón-Aguilar C, López-Gómez M, Romero JK, Massri M, Seguel A, Mora MDLL, Borie F. Arbuscular mycorrhizal fungi from acidic soils favors production of tomatoes and lycopene concentration. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:2352-2358. [PMID: 34636032 DOI: 10.1002/jsfa.11573] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 08/11/2021] [Accepted: 10/12/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Tomato is widely consumed throughout the world for its flavor and nutritional value. This functional food largely depends on the implementation of new strategies to maintain the nutraceutical value, e.g. lycopene concentration, and overcome the challenges of sustainable production and food security. The use of arbuscular mycorrhizal fungi (AMF)-based biostimulants represents one of the most promising tools for sustainable management of agricultural soils, being fundamental for organic food production, reducing fertilizers and pesticides use, and decreasing environmental damage. This study aimed at elucidating whether native arbuscular mycorrhizal fungi (AMF) could positively affect tomato yield and lycopene concentration. RESULTS Native AMF inoculum consisted of two inoculum types: the single species Claroideoglomus claroideum, and a mix of Scutellospora calospora, Acaulospora laevis, Claroideoglomus claroideum, and Claroideoglomus etunicatum. At the end of the study up to 78% of the root system was colonized by single inoculum. Tomato diameters in single and mix mycorrhizal plants showed increases of 80% and 35% respectively. Fresh weights were 84% and 38% higher with single and mix inocula compared with the controls, respectively. The lycopene concentration in tomato fruits of plants with single and mix inoculum was higher than controls. The lycopene concentration was 124.5% and 113.9% greater in single and mix than non-inoculated plants. CONCLUSION Tomato diameters, fresh weight and lycopene concentration was significantly higher in plants colonized by AMF compared with uninoculated plants. Results suggest that the role of single species Claroideoglomus claroideum could generate better plant performance due to its high production of extraradical mycelium. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Paula Aguilera
- Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile
| | - Ninozhka Becerra
- Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile
| | - Marysol Alvear
- Departamento de Ciencias Químicas y Recursos Naturales, Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Temuco, Chile
| | - Nancy Ortiz
- Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile
| | - Alessandra Turrini
- Department of Agriculture Food and Environment, University of Pisa, Pisa, Italy
| | - Concepción Azcón-Aguilar
- Departamento de Microbiología del suelo y Sistemas Simbióticos, Estación Experimental del Zaidín, CSIC, Granada, Spain
| | - Miguel López-Gómez
- Departamento de Fisiología Vegetal, Facultad de Ciencias, Universidad de Granada, Granada, Spain
| | - Juan K Romero
- Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile
| | - Mariajosé Massri
- Departamento de Ciencias Químicas y Recursos Naturales, Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Temuco, Chile
| | - Alex Seguel
- Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile
| | - María de La Luz Mora
- Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile
| | - Fernando Borie
- Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile
- Facultad de Recursos Naturales, Universidad Católica de Temuco, Temuco, Chile
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15
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Yildirir G, Sperschneider J, Malar C M, Chen ECH, Iwasaki W, Cornell C, Corradi N. Long reads and Hi-C sequencing illuminate the two-compartment genome of the model arbuscular mycorrhizal symbiont Rhizophagus irregularis. THE NEW PHYTOLOGIST 2022; 233:1097-1107. [PMID: 34747029 DOI: 10.1111/nph.17842] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 10/29/2021] [Indexed: 06/13/2023]
Abstract
Chromosome folding links genome structure with gene function by generating distinct nuclear compartments and topologically associating domains. In mammals, these undergo preferential interactions and regulate gene expression. However, their role in fungal genome biology is unclear. Here, we combine Nanopore (ONT) sequencing with chromatin conformation capture sequencing (Hi-C) to reveal chromosome and epigenetic diversity in a group of obligate plant symbionts: the arbuscular mycorrhizal fungi (AMF). We find that five phylogenetically distinct strains of the model AMF Rhizophagus irregularis carry 33 chromosomes with substantial within-species variability in size, as well as in gene and repeat content. Strain-specific Hi-C contact maps reveal a 'checkerboard' pattern that underline two dominant euchromatin (A) and heterochromatin (B) compartments. Each compartment differs in the level of gene transcription, regulation of candidate effectors and methylation frequencies. The A-compartment is more gene-dense and contains most core genes, while the B-compartment is more repeat-rich and has higher rates of chromosomal rearrangement. While the B-compartment is transcriptionally repressed, it has significantly more secreted proteins and in planta upregulated candidate effectors, suggesting a possible host-induced change in chromosome conformation. Overall, this study provides a fine-scale view into the genome biology and evolution of model plant symbionts, and opens avenues to study the epigenetic mechanisms that modify chromosome folding during host-microbe interactions.
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Affiliation(s)
- Gökalp Yildirir
- Department of Biology, University of Ottawa, Ottawa, ON, K1N 6N5, Canada
| | - Jana Sperschneider
- Biological Data Science Institute, The Australian National University, Canberra, ACT, 260, Australia
| | - Mathu Malar C
- Department of Biology, University of Ottawa, Ottawa, ON, K1N 6N5, Canada
| | - Eric C H Chen
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, 1113-0033, Japan
| | - Wataru Iwasaki
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, 1113-0033, Japan
| | - Calvin Cornell
- Department of Biology, University of Ottawa, Ottawa, ON, K1N 6N5, Canada
| | - Nicolas Corradi
- Department of Biology, University of Ottawa, Ottawa, ON, K1N 6N5, Canada
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16
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Schultz CJ, Wu Y, Baumann U. A targeted bioinformatics approach identifies highly variable cell surface proteins that are unique to Glomeromycotina. MYCORRHIZA 2022; 32:45-66. [PMID: 35031894 PMCID: PMC8786786 DOI: 10.1007/s00572-021-01066-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 12/24/2021] [Indexed: 06/14/2023]
Abstract
Diversity in arbuscular mycorrhizal fungi (AMF) contributes to biodiversity and resilience in natural environments and healthy agricultural systems. Functional complementarity exists among species of AMF in symbiosis with their plant hosts, but the molecular basis of this is not known. We hypothesise this is in part due to the difficulties that current sequence assembly methodologies have assembling sequences for intrinsically disordered proteins (IDPs) due to their low sequence complexity. IDPs are potential candidates for functional complementarity because they often exist as extended (non-globular) proteins providing additional amino acids for molecular interactions. Rhizophagus irregularis arabinogalactan-protein-like proteins (AGLs) are small secreted IDPs with no known orthologues in AMF or other fungi. We developed a targeted bioinformatics approach to identify highly variable AGLs/IDPs in RNA-sequence datasets. The approach includes a modified multiple k-mer assembly approach (Oases) to identify candidate sequences, followed by targeted sequence capture and assembly (mirabait-mira). All AMF species analysed, including the ancestral family Paraglomeraceae, have small families of proteins rich in disorder promoting amino acids such as proline and glycine, or glycine and asparagine. Glycine- and asparagine-rich proteins also were found in Geosiphon pyriformis (an obligate symbiont of a cyanobacterium), from the same subphylum (Glomeromycotina) as AMF. The sequence diversity of AGLs likely translates to functional diversity, based on predicted physical properties of tandem repeats (elastic, amyloid, or interchangeable) and their broad pI ranges. We envisage that AGLs/IDPs could contribute to functional complementarity in AMF through processes such as self-recognition, retention of nutrients, soil stability, and water movement.
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Affiliation(s)
- Carolyn J Schultz
- School of Agriculture, Food, and Wine, Waite Research Institute, University of Adelaide, Adelaide, SA, Australia.
| | - Yue Wu
- School of Agriculture, Food, and Wine, Waite Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Ute Baumann
- School of Agriculture, Food, and Wine, Waite Research Institute, University of Adelaide, Adelaide, SA, Australia
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17
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Reynolds NK, Jusino MA, Stajich JE, Smith ME. Understudied, underrepresented, and unknown: Methodological biases that limit detection of early diverging fungi from environmental samples. Mol Ecol Resour 2021; 22:1065-1085. [PMID: 34695878 DOI: 10.1111/1755-0998.13540] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 09/13/2021] [Accepted: 09/15/2021] [Indexed: 01/04/2023]
Abstract
Metabarcoding is an important tool for understanding fungal communities. The internal transcribed spacer (ITS) rDNA is the accepted fungal barcode but has known problems. The large subunit (LSU) rDNA has also been used to investigate fungal communities but available LSU metabarcoding primers were mostly designed to target Dikarya (Ascomycota + Basidiomycota) with little attention to early diverging fungi (EDF). However, evidence from multiple studies suggests that EDF comprise a large portion of unknown diversity in community sampling. Here, we investigate how DNA marker choice and methodological biases impact recovery of EDF from environmental samples. We focused on one EDF lineage, Zoopagomycota, as an example. We evaluated three primer sets (ITS1F/ITS2, LROR/LR3, and LR3 paired with new primer LR22F) to amplify and sequence a Zoopagomycota mock community and a set of 146 environmental samples with Illumina MiSeq. We compared two taxonomy assignment methods and created an LSU reference database compatible with AMPtk software. The two taxonomy assignment methods recovered strikingly different communities of fungi and EDF. Target fragment length variation exacerbated PCR amplification biases and influenced downstream taxonomic assignments, but this effect was greater for EDF than Dikarya. To improve identification of LSU amplicons we performed phylogenetic reconstruction and illustrate the advantages of this critical tool for investigating identified and unidentified sequences. Our results suggest much of the EDF community may be missed or misidentified with "standard" metabarcoding approaches and modified techniques are needed to understand the role of these taxa in a broader ecological context.
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Affiliation(s)
- Nicole K Reynolds
- Department of Plant Pathology, University of Florida, Gainesville, Florida, USA
| | - Michelle A Jusino
- Center for Forest Mycology Research, USDA Forest Service, Northern Research Station, Madison, Wisconsin, USA
| | - Jason E Stajich
- Department of Plant Pathology & Microbiology and Institute for Integrative Genome Biology, University of California-Riverside, Riverside, California, USA
| | - Matthew E Smith
- Department of Plant Pathology, University of Florida, Gainesville, Florida, USA
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18
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Rich MK, Vigneron N, Libourel C, Keller J, Xue L, Hajheidari M, Radhakrishnan GV, Le Ru A, Diop SI, Potente G, Conti E, Duijsings D, Batut A, Le Faouder P, Kodama K, Kyozuka J, Sallet E, Bécard G, Rodriguez-Franco M, Ott T, Bertrand-Michel J, Oldroyd GED, Szövényi P, Bucher M, Delaux PM. Lipid exchanges drove the evolution of mutualism during plant terrestrialization. Science 2021; 372:864-868. [PMID: 34016782 DOI: 10.1126/science.abg0929] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 03/26/2021] [Indexed: 12/13/2022]
Abstract
Symbiosis with arbuscular mycorrhizal fungi (AMF) improves plant nutrition in most land plants, and its contribution to the colonization of land by plants has been hypothesized. Here, we identify a conserved transcriptomic response to AMF among land plants, including the activation of lipid metabolism. Using gain of function, we show the transfer of lipids from the liverwort Marchantia paleacea to AMF and its direct regulation by the transcription factor WRINKLED (WRI). Arbuscules, the nutrient-exchange structures, were not formed in loss-of-function wri mutants in M. paleacea, leading to aborted mutualism. Our results show the orthology of the symbiotic transfer of lipids across land plants and demonstrate that mutualism with arbuscular mycorrhizal fungi was present in the most recent ancestor of land plants 450 million years ago.
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Affiliation(s)
- Mélanie K Rich
- Laboratoire de Recherche en Sciences Végétales (LRSV), Université de Toulouse, CNRS, UPS, 31326 Castanet-Tolosan, France
| | - Nicolas Vigneron
- Laboratoire de Recherche en Sciences Végétales (LRSV), Université de Toulouse, CNRS, UPS, 31326 Castanet-Tolosan, France
| | - Cyril Libourel
- Laboratoire de Recherche en Sciences Végétales (LRSV), Université de Toulouse, CNRS, UPS, 31326 Castanet-Tolosan, France
| | - Jean Keller
- Laboratoire de Recherche en Sciences Végétales (LRSV), Université de Toulouse, CNRS, UPS, 31326 Castanet-Tolosan, France
| | - Li Xue
- Institute for Plant Sciences, Cologne Biocenter, Cluster of Excellence on Plant Sciences, University of Cologne, D-50674 Cologne, Germany.,College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Mohsen Hajheidari
- Institute for Plant Sciences, Cologne Biocenter, Cluster of Excellence on Plant Sciences, University of Cologne, D-50674 Cologne, Germany
| | | | - Aurélie Le Ru
- Fédération de Recherche 3450, Plateforme Imagerie, Pôle de Biotechnologie Végétale, 31326 Castanet-Tolosan, France
| | - Seydina Issa Diop
- Department of Systematic and Evolutionary Botany, University of Zurich, 8008 Zurich, Switzerland.,Zurich-Basel Plant Science Center, 8092 Zurich, Switzerland
| | - Giacomo Potente
- Department of Systematic and Evolutionary Botany, University of Zurich, 8008 Zurich, Switzerland.,Zurich-Basel Plant Science Center, 8092 Zurich, Switzerland
| | - Elena Conti
- Department of Systematic and Evolutionary Botany, University of Zurich, 8008 Zurich, Switzerland.,Zurich-Basel Plant Science Center, 8092 Zurich, Switzerland
| | | | - Aurélie Batut
- MetaToulLipidomics Facility, INSERM UMR1048, 31432 Toulouse, France
| | | | - Kyoichi Kodama
- Graduate School of Life Sciences, Tohoku University, Sendai 980-8577, Japan
| | - Junko Kyozuka
- Graduate School of Life Sciences, Tohoku University, Sendai 980-8577, Japan
| | - Erika Sallet
- Laboratory of Plant-Microbe Interactions (LIPM), Université de Toulouse, INRA, CNRS, 31326 Castanet-Tolosan, France
| | - Guillaume Bécard
- Laboratoire de Recherche en Sciences Végétales (LRSV), Université de Toulouse, CNRS, UPS, 31326 Castanet-Tolosan, France
| | | | - Thomas Ott
- Cell Biology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany.,CIBSS - Centre for Integrative Biological Signalling Studies, University of Freiburg, 79104 Freiburg, Germany
| | | | - Giles E D Oldroyd
- John Innes Centre, Norwich NR4 7UH, UK.,Crop Science Centre, University of Cambridge, Cambridge CB2 3EA, UK
| | - Péter Szövényi
- Department of Systematic and Evolutionary Botany, University of Zurich, 8008 Zurich, Switzerland.,Zurich-Basel Plant Science Center, 8092 Zurich, Switzerland
| | - Marcel Bucher
- Institute for Plant Sciences, Cologne Biocenter, Cluster of Excellence on Plant Sciences, University of Cologne, D-50674 Cologne, Germany
| | - Pierre-Marc Delaux
- Laboratoire de Recherche en Sciences Végétales (LRSV), Université de Toulouse, CNRS, UPS, 31326 Castanet-Tolosan, France.
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19
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Nagy LG, Kovács GM. Mycology: Rediscovery of a lost model fungus highlights the origin of mycorrhizal symbioses. Curr Biol 2021; 31:R342-R344. [PMID: 33848489 DOI: 10.1016/j.cub.2021.02.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Arbuscular mycorrhizae (AM) are the most frequent symbioses of land plants. By reisolating a long-lost fungus from nature, a new study cracks the genomics of an enigmatic fungal-cyanobacterial partnership and reestablishes a valuable model for understanding the AM symbiosis.
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Affiliation(s)
- László G Nagy
- Synthetic and Systems Biology Unit, Institute of Biochemistry, Biological Research Centre, H-6726 Szeged, Hungary; Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Budapest, H-1117, Hungary.
| | - Gábor M Kovács
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Budapest, H-1117, Hungary
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