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Seeliger M, Hilton S, Muscatt G, Walker C, Bass D, Albornoz F, Standish RJ, Gray ND, Mercy L, Rempelos L, Schneider C, Ryan MH, Bilsborrow PE, Bending GD. New fungal primers reveal the diversity of Mucoromycotinian arbuscular mycorrhizal fungi and their response to nitrogen application. ENVIRONMENTAL MICROBIOME 2024; 19:71. [PMID: 39294800 PMCID: PMC11411812 DOI: 10.1186/s40793-024-00617-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 09/09/2024] [Indexed: 09/21/2024]
Abstract
BACKGROUND Arbuscular mycorrhizas (AM) are the most widespread terrestrial symbiosis and are both a key determinant of plant health and a major contributor to ecosystem processes through their role in biogeochemical cycling. Until recently, it was assumed that the fungi which form AM comprise the subphylum Glomeromycotina (G-AMF), and our understanding of the diversity and ecosystem roles of AM is based almost exclusively on this group. However recent evidence shows that fungi which form the distinctive 'fine root endophyte' (FRE) AM morphotype are members of the subphylum Mucoromycotina (M-AMF), so that AM symbioses are actually formed by two distinct groups of fungi. RESULTS We investigated the influence of nitrogen (N) addition and wheat variety on the assembly of AM communities under field conditions. Visual assessment of roots showed co-occurrence of G-AMF and M-AMF, providing an opportunity to compare the responses of these two groups. Existing 'AM' 18S rRNA primers which co-amplify G-AMF and M-AMF were modified to reduce bias against Mucoromycotina, and compared against a new 'FRE' primer set which selectively amplifies Mucoromycotina. Using the AM-primers, no significant effect of either N-addition or wheat variety on G-AMF or M-AMF diversity or community composition was detected. In contrast, using the FRE-primers, N-addition was shown to reduce M-AMF diversity and altered community composition. The ASV which responded to N-addition were closely related, demonstrating a clear phylogenetic signal which was identified only by the new FRE-primers. The most abundant Mucoromycotina sequences we detected belonged to the same Endogonales clades as dominant sequences associated with FRE morphology in Australia, indicating that closely related M-AMF may be globally distributed. CONCLUSIONS The results demonstrate the need to consider both G-AMF and M-AMF when investigating AM communities, and highlight the importance of primer choice when investigating AMF community dynamics.
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Affiliation(s)
- Mirjam Seeliger
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
| | - Sally Hilton
- School of Life Sciences, University of Warwick, Coventry, CV4 7AL, UK
- Micropathology Ltd, Coventry, CV4 7EZ, UK
| | - George Muscatt
- School of Life Sciences, University of Warwick, Coventry, CV4 7AL, UK
| | - Christopher Walker
- Royal Botanic Gardens Edinburgh, 21A Inverleith Row, Edinburgh, EH3 5LR, UK
- UWA School of Agriculture and Environment, University of Western Australia, Crawley, WA, 6009, Australia
| | - David Bass
- Centre for Environment, Fisheries, and Aquaculture Science, Barrack Road, The Nothe, Weymouth, DT4 8UB, UK
- Department of Life Sciences, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK
| | - Felipe Albornoz
- UWA School of Agriculture and Environment, University of Western Australia, Crawley, WA, 6009, Australia
- Commonwealth Scientific and Industrial Research Organisation, Land and Water, Wembley, WA, Australia
- School of Environmental and Conservation Sciences, Murdoch University, South Street, Murdoch, WA, 6150, Australia
| | - Rachel J Standish
- School of Environmental and Conservation Sciences, Murdoch University, South Street, Murdoch, WA, 6150, Australia
| | - Neil D Gray
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | | | - Leonidas Rempelos
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | | | - Megan H Ryan
- UWA School of Agriculture and Environment, University of Western Australia, Crawley, WA, 6009, Australia
| | - Paul E Bilsborrow
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Gary D Bending
- School of Life Sciences, University of Warwick, Coventry, CV4 7AL, UK.
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Barnes CJ, Bünner MS, Ramírez-Flores MR, Nielsen IB, Ramos-Madrigal J, Zharikova D, McLaughlin CM, Gilbert MT, Sawers RJH. The ancestral environment of teosinte populations shapes their root microbiome. ENVIRONMENTAL MICROBIOME 2024; 19:64. [PMID: 39210412 PMCID: PMC11363609 DOI: 10.1186/s40793-024-00606-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 08/17/2024] [Indexed: 09/04/2024]
Abstract
BACKGROUND The composition of the root microbiome affects the host's growth, with variation in the host genome associated with microbiome variation. However, it is not known whether this intra-specific variation of root microbiomes is a consequence of plants performing targeted manipulations of them to adapt to their local environment or varying passively with other traits. To explore the relationship between the genome, environment and microbiome, we sampled seeds from teosinte populations across its native range in Mexico. We then grew teosinte accessions alongside two modern maize lines in a common garden experiment. Metabarcoding was performed using universal bacterial and fungal primers to profile their root microbiomes. RESULTS The root microbiome varied between the two modern maize lines and the teosinte accessions. We further found that variation of the teosinte genome, the ancestral environment (temperature/elevation) and root microbiome were all correlated. Multiple microbial groups significantly varied in relative abundance with temperature/elevation, with an increased abundance of bacteria associated with cold tolerance found in teosinte accessions taken from high elevations. CONCLUSIONS Our results suggest that variation in the root microbiome is pre-conditioned by the genome for the local environment (i.e. non-random). Ultimately, these claims would be strengthened by confirming that these differences in the root microbiome impact host phenotype, for example, by confirming that the root microbiomes of high-elevation teosinte populations enhance cold tolerance.
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Affiliation(s)
- Christopher J Barnes
- Department of Agroecology, Faculty of Technical Sciences, Aarhus University, Forsøgsvej 1, Slagelse, 4200, Denmark.
- Centre for Evolutionary Hologenomics, The Globe Institute, Faculty of Health, University of Copenhagen, Copenhagen, Denmark.
- The Globe Institute, Øster Voldgade 5 -7, Copenhagen K, 1350, Denmark.
| | - Maria Sophie Bünner
- Centre for Evolutionary Hologenomics, The Globe Institute, Faculty of Health, University of Copenhagen, Copenhagen, Denmark
| | - M Rosario Ramírez-Flores
- Departamento de Biotecnología y Bioquímica, Centro de Investigación y de Estudios Avanzados (CINVESTAV-IPN), Irapuato, Guanajuato, 36821, México
- Bioscience Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd, Oak Ridge, TN, 37830, USA
| | - Ida Broman Nielsen
- Centre for Evolutionary Hologenomics, The Globe Institute, Faculty of Health, University of Copenhagen, Copenhagen, Denmark
| | - Jazmin Ramos-Madrigal
- Centre for Evolutionary Hologenomics, The Globe Institute, Faculty of Health, University of Copenhagen, Copenhagen, Denmark
| | - Daria Zharikova
- Department of Agroecology, Faculty of Technical Sciences, Aarhus University, Forsøgsvej 1, Slagelse, 4200, Denmark
- Centre for Evolutionary Hologenomics, The Globe Institute, Faculty of Health, University of Copenhagen, Copenhagen, Denmark
| | - Chloee M McLaughlin
- Department of Plant Science, The Pennsylvania State University, State College, University Park, PA, USA
| | - M Thomas Gilbert
- Centre for Evolutionary Hologenomics, The Globe Institute, Faculty of Health, University of Copenhagen, Copenhagen, Denmark
- University Museum, NTNU, Trondheim, Norway
| | - Ruairidh J H Sawers
- Department of Plant Science, The Pennsylvania State University, State College, University Park, PA, USA
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3
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Qian S, Xu Y, Zhang Y, Wang X, Niu X, Wang P. Effect of AMF Inoculation on Reducing Excessive Fertilizer Use. Microorganisms 2024; 12:1550. [PMID: 39203391 PMCID: PMC11356082 DOI: 10.3390/microorganisms12081550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2024] [Revised: 07/15/2024] [Accepted: 07/28/2024] [Indexed: 09/03/2024] Open
Abstract
Excessive use of chemical fertilizer is a global concern. Arbuscular mycorrhizal fungi (AMF) are considered a potential solution due to their symbiotic association with crops. This study assessed AMF's effects on maize yield, fertilizer efficiency, plant traits, and soil nutrients under different reduced-fertilizer regimes in medium-low fertility fields. We found that phosphorus supplementation after a 30% fertilizer reduction enhanced AMF's positive impact on grain yield, increasing it by 3.47% with pure chemical fertilizers and 6.65% with mixed fertilizers. The AMF inoculation did not significantly affect the nitrogen and phosphorus fertilizer use efficiency, but significantly increased root colonization and soil mycelium density. Mixed fertilizer treatments with phosphorus supplementation after fertilizer reduction showed greater mycorrhizal effects on plant traits and soil nutrient contents compared to chemical fertilizer treatments. This study highlights that AMF inoculation, closely linked to fertilization regimes, can effectively reduce fertilizer use while sustaining or enhancing maize yields.
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Affiliation(s)
- Siru Qian
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun 130024, China; (S.Q.); (Y.X.); (X.W.); (X.N.)
| | - Ying Xu
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun 130024, China; (S.Q.); (Y.X.); (X.W.); (X.N.)
| | - Yifei Zhang
- Jilin Provincial Academy of Forestry Sciences, Changchun 130033, China;
| | - Xue Wang
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun 130024, China; (S.Q.); (Y.X.); (X.W.); (X.N.)
| | - Ximei Niu
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun 130024, China; (S.Q.); (Y.X.); (X.W.); (X.N.)
| | - Ping Wang
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun 130024, China; (S.Q.); (Y.X.); (X.W.); (X.N.)
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Duan S, Feng G, Limpens E, Bonfante P, Xie X, Zhang L. Cross-kingdom nutrient exchange in the plant-arbuscular mycorrhizal fungus-bacterium continuum. Nat Rev Microbiol 2024:10.1038/s41579-024-01073-7. [PMID: 39014094 DOI: 10.1038/s41579-024-01073-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/14/2024] [Indexed: 07/18/2024]
Abstract
The association between plants and arbuscular mycorrhizal fungi (AMF) affects plant performance and ecosystem functioning. Recent studies have identified AMF-associated bacteria as cooperative partners that participate in AMF-plant symbiosis: specific endobacteria live inside AMF, and hyphospheric bacteria colonize the soil that surrounds the extraradical hyphae. In this Review, we describe the concept of a plant-AMF-bacterium continuum, summarize current advances and provide perspectives on soil microbiology. First, we review the top-down carbon flow and the bottom-up mineral flow (especially phosphorus and nitrogen) in this continuum, as well as how AMF-bacteria interactions influence the biogeochemical cycling of nutrients (for example, carbon, phosphorus and nitrogen). Second, we discuss how AMF interact with hyphospheric bacteria or endobacteria to regulate nutrient exchange between plants and AMF, and the possible molecular mechanisms that underpin this continuum. Finally, we explore future prospects for studies on the hyphosphere to facilitate the utilization of AMF and hyphospheric bacteria in sustainable agriculture.
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Affiliation(s)
- Shilong Duan
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing, China
| | - Gu Feng
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing, China
| | - Erik Limpens
- Laboratory of Molecular Biology, Wageningen University and Research, Wageningen, The Netherlands
| | - Paola Bonfante
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy.
| | - Xianan Xie
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China.
| | - Lin Zhang
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing, China.
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Mafune KK, Kasson MT, Winkler MKH. Building blocks toward sustainable biofertilizers: variation in arbuscular mycorrhizal spore germination when immobilized with diazotrophic bacteria in biodegradable hydrogel beads. J Appl Microbiol 2024; 135:lxae167. [PMID: 38960411 DOI: 10.1093/jambio/lxae167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 06/18/2024] [Accepted: 07/02/2024] [Indexed: 07/05/2024]
Abstract
AIM We investigated whether there was interspecies and intraspecies variation in spore germination of 12 strains of arbuscular mycorrhizal fungi when co-entrapped with the diazotrophic plant growth-promoting bacteria, Azospirillum brasilense Sp7 in alginate hydrogel beads. METHODS AND RESULTS Twelve Rhizophagus irregularis, Rhizophagus intraradices, and Funneliformis mosseae strains were separately combined with a live culture of Azospirillum brasilense Sp7. Each fungal-bacterial consortia was supplemented with sodium alginate to a 2% concentration (v/v) and cross-linked in calcium chloride (2% w/v) to form biodegradable hydrogel beads. One hundred beads from each combination (total of 1200) were fixed in solidified modified Strullu and Romand media. Beads were observed for successful spore germination and bacterial growth over 14 days. In all cases, successful growth of A. brasilense was observed. For arbuscular mycorrhizal fungi, interspecies variation in spore germination was observed, with R. intraradices having the highest germination rate (64.3%), followed by R. irregularis (45.5%) and F. mosseae (40.3%). However, a difference in intraspecies germination was only observed among strains of R. irregularis and F. mosseae. Despite having varying levels of germination, even the strains with the lowest potential were still able to establish with the plant host Brachypodium distachyon in a model system. CONCLUSIONS Arbuscular mycorrhizal spore germination varied across strains when co-entrapped with a diazotrophic plant growth-promoting bacteria. This demonstrates that hydrogel beads containing a mixed consortium hold potential as a sustainable biofertilizer and that compatibility tests remain an important building block when aiming to create a hydrogel biofertilizer that encases a diversity of bacteria and fungi. Moving forward, further studies should be conducted to test the efficacy of these hydrogel biofertilizers on different crops across varying climatic conditions in order to optimize their potential.
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Affiliation(s)
- Korena K Mafune
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA 98105, United States
| | - Matt T Kasson
- Division of Plant and Soil Sciences, West Virginia University, Morgantown, WV 26506, United States
| | - Mari-Karoliina H Winkler
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA 98105, United States
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6
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Li C, Chen X, Jia Z, Zhai L, Zhang B, Grüters U, Ma S, Qian J, Liu X, Zhang J, Müller C. Meta-analysis reveals the effects of microbial inoculants on the biomass and diversity of soil microbial communities. Nat Ecol Evol 2024; 8:1270-1284. [PMID: 38849504 DOI: 10.1038/s41559-024-02437-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 05/13/2024] [Indexed: 06/09/2024]
Abstract
Microbial inoculation involves transplanting microorganisms from their natural habitat to new plants or soils to improve plant performance, and it is being increasingly used in agriculture and ecological restoration. However, microbial inoculants can invade and alter the composition of native microbial communities; thus, a comprehensive analysis is urgently needed to understand the overall impact of microbial inoculants on the biomass, diversity, structure and network complexity of native communities. Here we provide a meta-analysis of 335 studies revealing a positive effect of microbial inoculants on soil microbial biomass. This positive effect was weakened by environmental stress and enhanced by the use of fertilizers and native inoculants. Although microbial inoculants did not alter microbial diversity, they induced major changes in the structure and bacterial composition of soil microbial communities, reducing the complexity of bacterial networks and increasing network stability. Finally, higher initial levels of soil nutrients amplified the positive impact of microbial inoculants on fungal biomass, actinobacterial biomass, microbial biomass carbon and microbial biomass nitrogen. Together, our results highlight the positive effects of microbial inoculants on soil microbial biomass, emphasizing the benefits of native inoculants and the important regulatory roles of soil nutrient levels and environmental stress.
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Affiliation(s)
- Chong Li
- Co-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, Nanjing, China
- Institute of Plant Ecology, Justus-Liebig University Giessen, Giessen, Germany
| | - Xinli Chen
- Department of Renewable Resources, University of Alberta, Edmonton, Alberta, Canada
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Zhaohui Jia
- Co-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, Nanjing, China
| | - Lu Zhai
- Department of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, OK, USA
| | - Bo Zhang
- Department of Integrative Biology, Oklahoma State University, Stillwater, OK, USA
| | - Uwe Grüters
- Institute of Plant Ecology, Justus-Liebig University Giessen, Giessen, Germany
| | - Shilin Ma
- Co-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, Nanjing, China
| | - Jing Qian
- Yangzhou China Grand Canal Museum, Yangzhou, China
| | - Xin Liu
- Co-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, Nanjing, China.
| | - Jinchi Zhang
- Co-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, Nanjing, China.
| | - Christoph Müller
- Institute of Plant Ecology, Justus-Liebig University Giessen, Giessen, Germany
- School of Biology and Environmental Science and Earth Institute, University College Dublin, Dublin, Ireland
- Liebig Centre for Agroecology and Climate Impact Research, Justus-Liebig University, Giessen, Germany
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7
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Holt JR, Cavichiolli de Oliveira N, Medina RF, Malacrinò A, Lindsey ARI. Insect-microbe interactions and their influence on organisms and ecosystems. Ecol Evol 2024; 14:e11699. [PMID: 39041011 PMCID: PMC11260886 DOI: 10.1002/ece3.11699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 06/14/2024] [Accepted: 06/21/2024] [Indexed: 07/24/2024] Open
Abstract
Microorganisms are important associates of insect and arthropod species. Insect-associated microbes, including bacteria, fungi, and viruses, can drastically impact host physiology, ecology, and fitness, while many microbes still have no known role. Over the past decade, we have increased our knowledge of the taxonomic composition and functional roles of insect-associated microbiomes and viromes. There has been a more recent shift toward examining the complexity of microbial communities, including how they vary in response to different factors (e.g., host genome, microbial strain, environment, and time), and the consequences of this variation for the host and the wider ecological community. We provide an overview of insect-microbe interactions, the variety of associated microbial functions, and the evolutionary ecology of these relationships. We explore the influence of the environment and the interactive effects of insects and their microbiomes across trophic levels. Additionally, we discuss the potential for subsequent synergistic and reciprocal impacts on the associated microbiomes, ecological interactions, and communities. Lastly, we discuss some potential avenues for the future of insect-microbe interactions that include the modification of existing microbial symbionts as well as the construction of synthetic microbial communities.
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Affiliation(s)
| | | | - Raul F. Medina
- Department of EntomologyTexas A&M University, Minnie Bell Heep CenterCollege StationTexasUSA
| | - Antonino Malacrinò
- Department of AgricultureUniversità Degli Studi Mediterranea di Reggio CalabriaReggio CalabriaItaly
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8
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Alaux PL, Courty PE, Fréville H, David J, Rocher A, Taschen E. Wheat dwarfing reshapes plant and fungal development in arbuscular mycorrhizal symbiosis. MYCORRHIZA 2024; 34:351-360. [PMID: 38816524 DOI: 10.1007/s00572-024-01150-y] [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: 12/11/2023] [Accepted: 04/27/2024] [Indexed: 06/01/2024]
Abstract
The introduction of Reduced height (Rht) dwarfing genes into elite wheat varieties has contributed to enhanced yield gain in high input agrosystems by preventing lodging. Yet, how modern selection for dwarfing has affected symbiosis remains poorly documented. In this study, we evaluated the response of both the plant and the arbuscular mycorrhizal fungus to plant genetic variation at a major Quantitative Trait Locus called QTL 4B2, known to harbor a Rht dwarfing gene, when forming the symbiosis. We used twelve inbred genotypes derived from a diversity base broadened durum wheat Evolutionary Pre-breeding Population and genotyped with a high-throughput Single Nucleotide Polymorphism (SNP) genotyping array. In a microcosm setup segregating roots and the extra-radical mycelium, each wheat genotype was grown with or without the presence of Rhizophagus irregularis. To characterize arbuscular mycorrhizal symbiosis, we assessed hyphal density, root colonization, spore production, and plant biomass. Additionally, we split the variation of these variables due either to genotypes or to the Rht dwarfing genes alone. The fungus exhibited greater development in the roots of Dwarf plants compared to non-Dwarf plants, showing increases of 27%, 37% and 51% in root colonization, arbuscules, and vesicles, respectively. In addition, the biomass of the extra-radical fungal structures increased by around 31% in Dwarf plants. The biomass of plant roots decreased by about 43% in mycorrhizal Dwarf plants. Interestingly, extraradical hyphal production was found to be partly genetically determined with no significant effect of Rht, as for plant biomasses. In contrast, variations in root colonization, arbuscules and extraradical spore production were explained by Rht dwarfing genes. Finally, when mycorrhizal, Dwarf plants had significantly lower total P content, pointing towards a less beneficial symbiosis for the plant and increased profit for the fungus. These results highlight the effect of Rht dwarfing genes on both root and fungal development. This calls for further research into the molecular mechanisms governing these effects, as well as changes in plant physiology, and their implications for fostering arbuscular mycorrhizal symbiosis in sustainable agrosystems.
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Affiliation(s)
- Pierre-Louis Alaux
- UMR 7205, Institut Systématique Evolution Biodiversité, Muséum National d'Histoire Naturelle, CNRS, Sorbonne Université, EPHE, UA, 75005, Paris, France
- Agroécologie, Institut Agro Dijon, CNRS, Université de Bourgogne, INRAE, Dijon, France
- AGAP Institut, Université de Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, France
- UMR Eco & Sols, Univ Montpellier, CIRAD, INRAE, Institut Agro, IRD, Place Viala, 34060, Montpellier cedex 2, Montpellier, France
| | | | - Hélène Fréville
- AGAP Institut, Université de Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, France
| | - Jacques David
- AGAP Institut, Université de Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, France
| | - Aline Rocher
- AGAP Institut, Université de Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, France
| | - Elisa Taschen
- UMR Eco & Sols, Univ Montpellier, CIRAD, INRAE, Institut Agro, IRD, Place Viala, 34060, Montpellier cedex 2, Montpellier, France.
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9
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Corazon-Guivin MA, Rengifo del Aguila S, Corrêa RX, Cordova-Sinarahua D, Costa Maia L, Alves da Silva DK, Alves da Silva G, López-García Á, Coyne D, Oehl F. Native Arbuscular Mycorrhizal Fungi Promote Plukenetia volubilis Growth and Decrease the Infection Levels of Meloidogyne incognita. J Fungi (Basel) 2024; 10:451. [PMID: 39057336 PMCID: PMC11277566 DOI: 10.3390/jof10070451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2024] [Revised: 06/22/2024] [Accepted: 06/24/2024] [Indexed: 07/28/2024] Open
Abstract
The use of arbuscular mycorrhizal fungi (AMF) offers promising benefits to agriculture in the Amazon regions, where soils are characteristically acidic and nutrient-poor. The purpose of this research was to investigate the potential effects of two recently described species of AMF (Nanoglomus plukenetiae and Rhizoglomus variabile) native to the Peruvian Amazon for improving the plant growth of Plukenetia volubilis (inka nut or sacha inchi) and protecting the roots against soil pathogens. Two assays were simultaneously conducted under greenhouse conditions in Peru. The first focused on evaluating the biofertilizer effect of AMF inoculation, while the second examined the bioprotective effect against the root knot nematode, Meloidogyne incognita. Overall, the results showed that AMF inoculation of P. volubilis seedlings positively improved their development, particularly their biomass, height, and the leaf nutrient contents. When seedlings were exposed to M. incognita, plant growth was also noticeably higher for AMF-inoculated plants than those without AMF inoculation. Nematode reproduction was significantly suppressed by the presence of AMF, in particular R. variabile, and especially when inoculated prior to nematode exposure. The dual AMF inoculation did not necessarily lead to improved crop growth but notably improved P and K leaf contents. The findings provide strong justification for the development of products based on AMF as agro-inputs to catalyze nutrient use and uptake and protect crops against pests and diseases, especially those that are locally adapted to local crops and cropping conditions.
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Affiliation(s)
- Mike Anderson Corazon-Guivin
- Laboratorio de Biología y Genética Molecular, Universidad Nacional de San Martín, Jr. Amorarca N° 315, Morales 22201, Peru;
- Center of Biotechnology and Genetics, Department of Biological Sciences, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado Km 16, Ilheus 45662-900, Brazil; (R.X.C.); (D.C.-S.)
| | - Sofía Rengifo del Aguila
- Laboratorio de Biología y Genética Molecular, Universidad Nacional de San Martín, Jr. Amorarca N° 315, Morales 22201, Peru;
| | - Ronan Xavier Corrêa
- Center of Biotechnology and Genetics, Department of Biological Sciences, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado Km 16, Ilheus 45662-900, Brazil; (R.X.C.); (D.C.-S.)
| | - Deyvis Cordova-Sinarahua
- Center of Biotechnology and Genetics, Department of Biological Sciences, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado Km 16, Ilheus 45662-900, Brazil; (R.X.C.); (D.C.-S.)
| | - Leonor Costa Maia
- Departamento de Micologia, Centro de Biociências, Universidade Federal de Pernambuco, Av. da Engenharia s/n, Recife 50740-600, Brazil; (L.C.M.); (D.K.A.d.S.); (G.A.d.S.)
| | - Danielle Karla Alves da Silva
- Departamento de Micologia, Centro de Biociências, Universidade Federal de Pernambuco, Av. da Engenharia s/n, Recife 50740-600, Brazil; (L.C.M.); (D.K.A.d.S.); (G.A.d.S.)
| | - Gladstone Alves da Silva
- Departamento de Micologia, Centro de Biociências, Universidade Federal de Pernambuco, Av. da Engenharia s/n, Recife 50740-600, Brazil; (L.C.M.); (D.K.A.d.S.); (G.A.d.S.)
| | - Álvaro López-García
- Departamento de Microbiología del Suelo y la Planta, Estación Experimental del Zaidín (EEZ), CSIC, 18008 Granada, Spain;
| | - Danny Coyne
- International Institute of Tropical Agriculture (IITA), Ibadan 200113, Nigeria;
| | - Fritz Oehl
- Agroscope, Competence Division for Plants and Plant Products, Plant Protection Products-Impact and Assessment, Müller-Thurgau-Strasse 29, 8820 Wädenswil, Switzerland;
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10
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Ghorui M, Chowdhury S, Balu P, Burla S. Arbuscular Mycorrhizal inoculants and its regulatory landscape. Heliyon 2024; 10:e30359. [PMID: 38711654 PMCID: PMC11070868 DOI: 10.1016/j.heliyon.2024.e30359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 04/23/2024] [Accepted: 04/24/2024] [Indexed: 05/08/2024] Open
Abstract
One of the most prominent means for sustainable agriculture and ecosystem management are Arbuscular Mycorrhizal (AM) inoculants. These inoculants establish beneficial symbiotic relationships with land plant roots, offering a wide range of benefits, from enhanced nutrient absorption to improved resilience against environmental stressors. However, several currently available commercial AM inoculants face challenges such as inconsistency in field applications, ecological risks associated with non-native strains, and the absence of universal regulations. Currently, regulations for AM inoculants vary globally, with some regions leading efforts to standardize and ensure quality control. Proposed regulatory frameworks aim to establish parameters for composition, safety, and efficacy. Nevertheless, challenges persist in terms of scientific data, standardization, testing under real conditions, and the ecological impact of these inoculants. To address these challenges and unlock the full potential of AM inoculants, increased research funding, public-private partnerships, monitoring, awareness, and ecosystem impact studies are recommended. Future regulations have the potential to improve product quality, soil health, and crop productivity while reducing reliance on chemical inputs and benefiting the environment. However, addressing issues related to compliance, standardization, education, certification, monitoring, and cost is essential for realizing these benefits. Global harmonization and collaborative efforts are vital to maximize their impact on agriculture and ecosystem management, leading to healthier soils, increased crop yields, and a more sustainable agricultural industry.
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Affiliation(s)
- Maunata Ghorui
- Symbiotic Sciences Pvt. Ltd., Plot no 575, Pace City-II, Sector 37, Gurugram, Haryana, 122001, India
| | - Shouvik Chowdhury
- Symbiotic Sciences Pvt. Ltd., Plot no 575, Pace City-II, Sector 37, Gurugram, Haryana, 122001, India
| | - Prakash Balu
- Department of Biotechnology, School of Life Sciences, Vels Institute of Science, Technology and Advanced Studies (VISTAS), Pallavaram, Chennai, 600 117, India
| | - Sashidhar Burla
- ATGC Biotech Pvt. Ltd., Sy. No. 494, 495 & 496, ATGC Agri Biotech Innovation Square, TSIC Kolthur Biotech Park, Genome Valley, Shamirpet Mandal, Hyderabad, Telangana 500078, India
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11
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Corrêa A, Ferrol N, Cruz C. Testing the trade-balance model: resource stoichiometry does not sufficiently explain AM effects. THE NEW PHYTOLOGIST 2024; 242:1561-1575. [PMID: 38009528 DOI: 10.1111/nph.19432] [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: 09/08/2023] [Accepted: 10/25/2023] [Indexed: 11/29/2023]
Abstract
Variations in arbuscular mycorrhizae (AM) effects on plant growth (MGR) are commonly assumed to result from cost : benefit balances, with C as the cost and, most frequently, P as the benefit. The trade-balance model (TBM) adopts these assumptions and hypothesizes that mycorrhizal benefit depends on C : N : P stoichiometry. Although widely accepted, the TBM has not been experimentally tested. We isolated the parameters included in the TBM and tested these assumptions using it as framework. Oryza sativa plants were supplied with different N : P ratios at low light level, establishing different C : P and C : N exchange rates, and C, N or P limitation. MGR and effects on nutrient uptake, %M, ERM, photosynthesis and shoot starch were measured. C distribution to AM fungi played no role in MGR, and N was essential for all AM effects, including on P nutrition. C distribution to AM and MGR varied with the limiting nutrient (N or P), and evidence of extensive interplay between N and P was observed. The TBM was not confirmed. The results agreed with the exchange of surplus resources and source-sink regulation of resource distribution among plants and AMF. Rather than depending on exchange rates, resource exchange may simply obey both symbiont needs, not requiring further regulation.
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Affiliation(s)
- Ana Corrêa
- Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal
| | - Nuria Ferrol
- Department of Soil and Plant Microbiology, Estación Experimental del Zaidín, CSIC, 18008, Granada, Spain
| | - Cristina Cruz
- Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal
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12
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Williams A, Sinanaj B, Hoysted GA. Plant-microbe interactions through a lens: tales from the mycorrhizosphere. ANNALS OF BOTANY 2024; 133:399-412. [PMID: 38085925 PMCID: PMC11006548 DOI: 10.1093/aob/mcad191] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 12/11/2023] [Indexed: 04/12/2024]
Abstract
BACKGROUND The soil microbiome plays a pivotal role in maintaining ecological balance, supporting food production, preserving water quality and safeguarding human health. Understanding the intricate dynamics within the soil microbiome necessitates unravelling complex bacterial-fungal interactions (BFIs). BFIs occur in diverse habitats, such as the phyllosphere, rhizosphere and bulk soil, where they exert substantial influence on plant-microbe associations, nutrient cycling and overall ecosystem functions. In various symbiotic associations, fungi form mycorrhizal connections with plant roots, enhancing nutrient uptake through the root and mycorrhizal pathways. Concurrently, specific soil bacteria, including mycorrhiza helper bacteria, play a pivotal role in nutrient acquisition and promoting plant growth. Chemical communication and biofilm formation further shape plant-microbial interactions, affecting plant growth, disease resistance and nutrient acquisition processes. SCOPE Promoting synergistic interactions between mycorrhizal fungi and soil microbes holds immense potential for advancing ecological knowledge and conservation. However, despite the significant progress, gaps remain in our understanding of the evolutionary significance, perception, functional traits and ecological relevance of BFIs. Here we review recent findings obtained with respect to complex microbial communities - particularly in the mycorrhizosphere - and include the latest advances in the field, outlining their profound impacts on our understanding of ecosystem dynamics and plant physiology and function. CONCLUSIONS Deepening our understanding of plant BFIs can help assess their capabilities with regard to ecological and agricultural safe-guarding, in particular buffering soil stresses, and ensuring sustainable land management practices. Preserving and enhancing soil biodiversity emerge as critical imperatives in sustaining life on Earth amidst pressures of anthropogenic climate change. A holistic approach integrates scientific knowledge on bacteria and fungi, which includes their potential to foster resilient soil ecosystems for present and future generations.
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Affiliation(s)
- Alex Williams
- Plants, Photosynthesis and Soil, School of Bioscience, University of Sheffield, Sheffield, S10 2TN, UK
| | - Besiana Sinanaj
- Plants, Photosynthesis and Soil, School of Bioscience, University of Sheffield, Sheffield, S10 2TN, UK
| | - Grace A Hoysted
- Department of Biology, Maynooth University, Maynooth, Co. Kildare, Ireland
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13
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Li X, Zheng X, Yadav N, Saha S, Salama ES, Li X, Wang L, Jeon BH. Rational management of the plant microbiome for the Second Green Revolution. PLANT COMMUNICATIONS 2024; 5:100812. [PMID: 38213028 PMCID: PMC11009158 DOI: 10.1016/j.xplc.2024.100812] [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: 08/02/2023] [Revised: 11/06/2023] [Accepted: 01/05/2024] [Indexed: 01/13/2024]
Abstract
The Green Revolution of the mid-20th century transformed agriculture worldwide and has resulted in environmental challenges. A new approach, the Second Green Revolution, seeks to enhance agricultural productivity while minimizing negative environmental impacts. Plant microbiomes play critical roles in plant growth and stress responses, and understanding plant-microbiome interactions is essential for developing sustainable agricultural practices that meet food security and safety challenges, which are among the United Nations Sustainable Development Goals. This review provides a comprehensive exploration of key deterministic processes crucial for developing microbiome management strategies, including the host effect, the facilitator effect, and microbe-microbe interactions. A hierarchical framework for plant microbiome modulation is proposed to bridge the gap between basic research and agricultural applications. This framework emphasizes three levels of modulation: single-strain, synthetic community, and in situ microbiome modulation. Overall, rational management of plant microbiomes has wide-ranging applications in agriculture and can potentially be a core technology for the Second Green Revolution.
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Affiliation(s)
- Xiaofang Li
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China
| | - Xin Zheng
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China
| | - Nikita Yadav
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, South Korea
| | - Shouvik Saha
- Natural Resources Research Institute, University of Minnesota Duluth, Hermantown, MN 55811, USA; Department of Biotechnology, Brainware University, Barasat, Kolkata 700125, West Bengal, India
| | - El-Sayed Salama
- Department of Occupational and Environmental Health, School of Public Health, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Xiangkai Li
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Science, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Likun Wang
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China.
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, South Korea.
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14
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Slimani A, Ait-El-Mokhtar M, Ben-Laouane R, Boutasknit A, Anli M, Abouraicha EF, Oufdou K, Meddich A, Baslam M. Molecular and Systems Biology Approaches for Harnessing the Symbiotic Interaction in Mycorrhizal Symbiosis for Grain and Oil Crop Cultivation. Int J Mol Sci 2024; 25:912. [PMID: 38255984 PMCID: PMC10815302 DOI: 10.3390/ijms25020912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/09/2024] [Accepted: 01/09/2024] [Indexed: 01/24/2024] Open
Abstract
Mycorrhizal symbiosis, the mutually beneficial association between plants and fungi, has gained significant attention in recent years due to its widespread significance in agricultural productivity. Specifically, arbuscular mycorrhizal fungi (AMF) provide a range of benefits to grain and oil crops, including improved nutrient uptake, growth, and resistance to (a)biotic stressors. Harnessing this symbiotic interaction using molecular and systems biology approaches presents promising opportunities for sustainable and economically-viable agricultural practices. Research in this area aims to identify and manipulate specific genes and pathways involved in the symbiotic interaction, leading to improved cereal and oilseed crop yields and nutrient acquisition. This review provides an overview of the research frontier on utilizing molecular and systems biology approaches for harnessing the symbiotic interaction in mycorrhizal symbiosis for grain and oil crop cultivation. Moreover, we address the mechanistic insights and molecular determinants underpinning this exchange. We conclude with an overview of current efforts to harness mycorrhizal diversity to improve cereal and oilseed health through systems biology.
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Affiliation(s)
- Aiman Slimani
- Centre d’Agrobiotechnologie et Bioingénierie, Unité de Recherche Labellisée CNRST (Centre AgroBiotech-URL-CNRST-05), Cadi Ayyad University, Marrakesh 40000, Morocco
- Laboratory of Agro-Food, Biotechnologies and Valorization of Plant Bioresources (AGROBIOVAL), Department of Biology, Faculty of Science Semlalia, Cadi Ayyad University, Marrakesh 40000, Morocco
- Laboratory of Microbial Biotechnologies, Agrosciences, and Environment, Department of Biology, Faculty of Science Semlalia, Cadi Ayyad University, Marrakesh 40000, Morocco
| | - Mohamed Ait-El-Mokhtar
- Laboratory Biochemistry, Environment & Agri-Food URAC 36, Department of Biology, Faculty of Science and Techniques—Mohammedia, Hassan II University of Casablanca, Mohammedia 28800, Morocco
| | - Raja Ben-Laouane
- Laboratory of Environment and Health, Department of Biology, Faculty of Science and Techniques, Errachidia 52000, Morocco
| | - Abderrahim Boutasknit
- Centre d’Agrobiotechnologie et Bioingénierie, Unité de Recherche Labellisée CNRST (Centre AgroBiotech-URL-CNRST-05), Cadi Ayyad University, Marrakesh 40000, Morocco
- Laboratory of Agro-Food, Biotechnologies and Valorization of Plant Bioresources (AGROBIOVAL), Department of Biology, Faculty of Science Semlalia, Cadi Ayyad University, Marrakesh 40000, Morocco
- Department of Biology, Multidisciplinary Faculty of Nador, Mohamed First University, Nador 62700, Morocco
| | - Mohamed Anli
- Laboratory of Agro-Food, Biotechnologies and Valorization of Plant Bioresources (AGROBIOVAL), Department of Biology, Faculty of Science Semlalia, Cadi Ayyad University, Marrakesh 40000, Morocco
- Department of Life, Earth and Environmental Sciences, University of Comoros, Patsy University Center, Moroni 269, Comoros
| | - El Faiza Abouraicha
- Centre d’Agrobiotechnologie et Bioingénierie, Unité de Recherche Labellisée CNRST (Centre AgroBiotech-URL-CNRST-05), Cadi Ayyad University, Marrakesh 40000, Morocco
- Laboratory of Agro-Food, Biotechnologies and Valorization of Plant Bioresources (AGROBIOVAL), Department of Biology, Faculty of Science Semlalia, Cadi Ayyad University, Marrakesh 40000, Morocco
- Higher Institute of Nursing and Health Techniques (ISPITS), Essaouira 44000, Morocco
| | - Khalid Oufdou
- Laboratory of Microbial Biotechnologies, Agrosciences, and Environment, Department of Biology, Faculty of Science Semlalia, Cadi Ayyad University, Marrakesh 40000, Morocco
| | - Abdelilah Meddich
- Centre d’Agrobiotechnologie et Bioingénierie, Unité de Recherche Labellisée CNRST (Centre AgroBiotech-URL-CNRST-05), Cadi Ayyad University, Marrakesh 40000, Morocco
- Laboratory of Agro-Food, Biotechnologies and Valorization of Plant Bioresources (AGROBIOVAL), Department of Biology, Faculty of Science Semlalia, Cadi Ayyad University, Marrakesh 40000, Morocco
| | - Marouane Baslam
- Centre d’Agrobiotechnologie et Bioingénierie, Unité de Recherche Labellisée CNRST (Centre AgroBiotech-URL-CNRST-05), Cadi Ayyad University, Marrakesh 40000, Morocco
- Laboratory of Agro-Food, Biotechnologies and Valorization of Plant Bioresources (AGROBIOVAL), Department of Biology, Faculty of Science Semlalia, Cadi Ayyad University, Marrakesh 40000, Morocco
- GrowSmart, Seoul 03129, Republic of Korea
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15
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Nahuelcura J, Ortega T, Peña F, Berríos D, Valdebenito A, Contreras B, Santander C, Cornejo P, Ruiz A. Antioxidant Response, Phenolic Compounds and Yield of Solanum tuberosum Tubers Inoculated with Arbuscular Mycorrhizal Fungi and Growing under Water Stress. PLANTS (BASEL, SWITZERLAND) 2023; 12:4171. [PMID: 38140498 PMCID: PMC10747638 DOI: 10.3390/plants12244171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/10/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023]
Abstract
Solanum tuberosum (potato) is one of the most common crops worldwide; however, it is sensitive to water stress, which necessitates the identification of alternative tools to improve their production. Here, we evaluated the inoculation of two arbuscular mycorrhizal fungi (AMF) strains, Claroideoglomus claroideum (CC), Claroideoglomus lamellosum (HMC26), and the MIX (CC + HMC26) in yield and phenolic and antioxidant response using chromatographic and spectroscopic methods in potato crops, at increasing levels of water stress, namely, with 100% (0), 70% (S1), and 40% (S2) soil humidity. Two caffeoylquinic acid isomers were detected and their levels showed a tendency to increase under stress together with the AMF inoculation, reaching up to 19.2 mg kg-1 of 5-caffeoylquinic acid and 7.4 mg kg-1 of caffeoylquinic acid isomer when CC was inoculated, and potato plants grew at the highest water starvation condition (S2). Regarding antioxidant activities, a differentiated response was detected depending on the AMF strain, highlighting the effect of HMC26 on Trolox equivalent antioxidant capacity (TEAC) method and CC in cupric reducing antioxidant capacity (CUPRAC) method, reaching up to 1.5 μmol g-1 of TEAC in plants inoculated with HMC26 and 0.9 μmol g-1 of CUPRAC in plants inoculated with CC, both in potato tubers of plants growing under the S2 stress condition. Meanwhile, the use of AMF did not influence the number and biomass of the tubers, but significant changes in the biochemical properties of tubers were observed. The results suggest that specific AMF adaptations to water stress must be considered when inoculation procedures are planned to improve the yield and quality of tubers in potato crops.
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Affiliation(s)
- Javiera Nahuelcura
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Avda. Francisco Salazar 01145, Temuco 4811230, Chile; (J.N.); (T.O.); (F.P.); (D.B.); (A.V.); (C.S.)
| | - Tiare Ortega
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Avda. Francisco Salazar 01145, Temuco 4811230, Chile; (J.N.); (T.O.); (F.P.); (D.B.); (A.V.); (C.S.)
| | - Fabiola Peña
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Avda. Francisco Salazar 01145, Temuco 4811230, Chile; (J.N.); (T.O.); (F.P.); (D.B.); (A.V.); (C.S.)
- Programa de Doctorado en Ciencias Agroalimentarias y Medioambiente, Facultad de Ciencias Agropecuarias y Forestales, Universidad de La Frontera, Temuco, Región de la Araucanía, Temuco 4811230, Chile
| | - Daniela Berríos
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Avda. Francisco Salazar 01145, Temuco 4811230, Chile; (J.N.); (T.O.); (F.P.); (D.B.); (A.V.); (C.S.)
- Programa de Doctorado en Ciencias Agroalimentarias y Medioambiente, Facultad de Ciencias Agropecuarias y Forestales, Universidad de La Frontera, Temuco, Región de la Araucanía, Temuco 4811230, Chile
| | - Analía Valdebenito
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Avda. Francisco Salazar 01145, Temuco 4811230, Chile; (J.N.); (T.O.); (F.P.); (D.B.); (A.V.); (C.S.)
| | - Boris Contreras
- Novaseed Ltda., Loteo Pozo de Ripio s/n, Parque Ivian II, Puerto Varas 5550000, Chile;
| | - Christian Santander
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Avda. Francisco Salazar 01145, Temuco 4811230, Chile; (J.N.); (T.O.); (F.P.); (D.B.); (A.V.); (C.S.)
| | - Pablo Cornejo
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Quillota 2260000, Chile
- Centro Regional de Investigación e Innovación para la Sostenibilidad de la Agricultura y los Territorios Rurales, CERES, La Palma, Quillota 2260000, Chile
| | - Antonieta Ruiz
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Avda. Francisco Salazar 01145, Temuco 4811230, Chile; (J.N.); (T.O.); (F.P.); (D.B.); (A.V.); (C.S.)
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16
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Sanzovo AWS, Silvestre DA, Goes KCGP, Volsi B, Constantino LV, Bordin I, Telles TS, Andrade DS. Crop rotation and inoculation increase soil bradyrhizobia population, soybean grain yields, and profitability. Braz J Microbiol 2023; 54:3187-3200. [PMID: 37857777 PMCID: PMC10689658 DOI: 10.1007/s42770-023-01148-2] [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: 12/26/2022] [Accepted: 10/05/2023] [Indexed: 10/21/2023] Open
Abstract
Crop rotation and rhizobial inoculation are strategies to increase yield by means of organic matter addition and modulation of microbial diversity. However, the extent to which these agricultural practices change soil Bradyrhizobium populations, soybean grain yield, and economic benefits to farmers is unclear. Thus, this study aimed to evaluate the interaction between crop rotation and inoculation of soybean (Glycine max) cultivated in two contrasting soils (clayey and sandy soil) on biological nitrogen fixation components, grain yields, and profits. Field experiments with a three-year crop rotation system were carried out to compare effects of inoculation and crop rotations on soil chemical attributes, bradyrhizobia most probable number (MPN) and diversity, soybean nodulation, grain yield, and economic indicators of inoculation in different crop rotations. The crop rotation did not affect the soil MPN cells of bradyrhizobia, but the inoculation and the soil sampling time did, ranging from 3.61-4.42 to 4.40-4.82 in the sandy soil, while in the clayey soil they were from 5.19-6.34 to 6.61-7.14 in Log10 per g of soil with higher population after harvest of summer crops. In the clayey soil, crop rotation influenced soybean nodulation. The grain yield of inoculated soybean in the clayey soil was higher than that in the sandy soil. Soybean inoculation with Bradyrhizobium spp. increased the profitability of agricultural production systems by up to 45% in clayey soil and up to 7% in sandy soil.
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Affiliation(s)
- Alisson Wilson Santos Sanzovo
- Instituto de Desenvolvimento Rural do Paraná-IAPAR-EMATER, Rodovia Celso Garcia Cid, Km 375, 86047-902, Londrina, Paraná, Brazil
| | - Danilo Augusto Silvestre
- Instituto de Desenvolvimento Rural do Paraná-IAPAR-EMATER, Rodovia Celso Garcia Cid, Km 375, 86047-902, Londrina, Paraná, Brazil
- Departamento de Agronomia, Universidade Estadual de Londrina (UEL), Londrina, Brazil
| | | | - Bruno Volsi
- Instituto de Desenvolvimento Rural do Paraná-IAPAR-EMATER, Rodovia Celso Garcia Cid, Km 375, 86047-902, Londrina, Paraná, Brazil
- Departamento de Agronomia, Universidade Estadual de Londrina (UEL), Londrina, Brazil
| | | | - Ivan Bordin
- Instituto de Desenvolvimento Rural do Paraná-IAPAR-EMATER, Rodovia Celso Garcia Cid, Km 375, 86047-902, Londrina, Paraná, Brazil
| | - Tiago Santos Telles
- Instituto de Desenvolvimento Rural do Paraná-IAPAR-EMATER, Rodovia Celso Garcia Cid, Km 375, 86047-902, Londrina, Paraná, Brazil
- Departamento de Agronomia, Universidade Estadual de Londrina (UEL), Londrina, Brazil
| | - Diva Souza Andrade
- Instituto de Desenvolvimento Rural do Paraná-IAPAR-EMATER, Rodovia Celso Garcia Cid, Km 375, 86047-902, Londrina, Paraná, Brazil.
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17
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Lutz S, Bodenhausen N, Hess J, Valzano-Held A, Waelchli J, Deslandes-Hérold G, Schlaeppi K, van der Heijden MGA. Soil microbiome indicators can predict crop growth response to large-scale inoculation with arbuscular mycorrhizal fungi. Nat Microbiol 2023; 8:2277-2289. [PMID: 38030903 PMCID: PMC10730404 DOI: 10.1038/s41564-023-01520-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 10/11/2023] [Indexed: 12/01/2023]
Abstract
Alternative solutions to mineral fertilizers and pesticides that reduce the environmental impact of agriculture are urgently needed. Arbuscular mycorrhizal fungi (AMF) can enhance plant nutrient uptake and reduce plant stress; yet, large-scale field inoculation trials with AMF are missing, and so far, results remain unpredictable. We conducted on-farm experiments in 54 fields in Switzerland and quantified the effects on maize growth. Growth response to AMF inoculation was highly variable, ranging from -12% to +40%. With few soil parameters and mainly soil microbiome indicators, we could successfully predict 86% of the variation in plant growth response to inoculation. The abundance of pathogenic fungi, rather than nutrient availability, best predicted (33%) AMF inoculation success. Our results indicate that soil microbiome indicators offer a sustainable biotechnological perspective to predict inoculation success at the beginning of the growing season. This predictability increases the profitability of microbiome engineering as a tool for sustainable agricultural management.
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Affiliation(s)
- Stefanie Lutz
- Plant-Soil Interactions, Department of Agroecology and Environment, Agroscope, Zurich, Switzerland
| | - Natacha Bodenhausen
- Department of Soil Sciences, Research Institute of Organic Agriculture (FiBL), Frick, Switzerland
| | - Julia Hess
- Plant-Soil Interactions, Department of Agroecology and Environment, Agroscope, Zurich, Switzerland
| | - Alain Valzano-Held
- Plant-Soil Interactions, Department of Agroecology and Environment, Agroscope, Zurich, Switzerland
| | - Jan Waelchli
- Plant Microbe Interactions, Department of Environmental Sciences, University of Basel, Basel, Switzerland
| | - Gabriel Deslandes-Hérold
- Plant Microbe Interactions, Department of Environmental Sciences, University of Basel, Basel, Switzerland
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
- Plant Biochemistry, Institute of Molecular Plant Biology, ETH Zurich, Zurich, Switzerland
| | - Klaus Schlaeppi
- Plant Microbe Interactions, Department of Environmental Sciences, University of Basel, Basel, Switzerland.
| | - Marcel G A van der Heijden
- Plant-Soil Interactions, Department of Agroecology and Environment, Agroscope, Zurich, Switzerland.
- Department of Plant and Microbial Biology, University of Zürich, Zurich, Switzerland.
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Yuan ML, Zhang MH, Shi ZY, Yang S, Zhang MG, Wang Z, Wu SW, Gao JK. Arbuscular mycorrhizal fungi enhance active ingredients of medicinal plants: a quantitative analysis. FRONTIERS IN PLANT SCIENCE 2023; 14:1276918. [PMID: 37929165 PMCID: PMC10623335 DOI: 10.3389/fpls.2023.1276918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Accepted: 09/22/2023] [Indexed: 11/07/2023]
Abstract
Medicinal plants are invaluable resources for mankind and play a crucial role in combating diseases. Arbuscular mycorrhizal fungi (AMF) are widely recognized for enhancing the production of medicinal active ingredients in medicinal plants. However, there is still a lack of comprehensive understanding regarding the quantitative effects of AMF on the accumulation of medicinal active ingredients. Here we conducted a comprehensive global analysis using 233 paired observations to investigate the impact of AMF inoculation on the accumulation of medicinal active ingredients. This study revealed that AMF inoculation significantly increased the contents of medicinal active ingredients by 27%, with a particularly notable enhancement observed in flavonoids (68%) and terpenoids (53%). Furthermore, the response of medicinal active ingredients in belowground organs (32%) to AMF was more pronounced than that in aboveground organs (18%). Notably, the AMF genus Rhizophagus exhibited the strongest effect in improving the contents of medicinal active ingredients, resulting in an increase of over 50% in both aboveground and belowground organs. Additionally, the promotion of medicinal active ingredients by AMF was attributed to improvements in physiological factors, such as chlorophyll, stomatal conductance and net photosynthetic rate. Collectively, this research substantially advanced our comprehension of the pivotal role of AMF in improving the medicinal active ingredients of plants and provided valuable insights into the potential mechanisms driving these enhancements.
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Affiliation(s)
- Ming-Li Yuan
- College of Agriculture, Henan University of Science and Technology, Luoyang, Henan, China
- School of Agriculture and Animal Husbandry Engineering, Zhoukou Vocational and Technical College, Henan, China
| | - Meng-Han Zhang
- College of Agriculture, Henan University of Science and Technology, Luoyang, Henan, China
- Henan Engineering Research Center for Rural Human Settlement, Luoyang, Henan, China
- Luoyang Key Laboratory of Symbiotic Microorganism and Green Development, Luoyang, Henan, China
| | - Zhao-Yong Shi
- College of Agriculture, Henan University of Science and Technology, Luoyang, Henan, China
- Henan Engineering Research Center for Rural Human Settlement, Luoyang, Henan, China
- Luoyang Key Laboratory of Symbiotic Microorganism and Green Development, Luoyang, Henan, China
| | - Shuang Yang
- College of Agriculture, Henan University of Science and Technology, Luoyang, Henan, China
- Henan Engineering Research Center for Rural Human Settlement, Luoyang, Henan, China
- Luoyang Key Laboratory of Symbiotic Microorganism and Green Development, Luoyang, Henan, China
| | - Meng-Ge Zhang
- College of Agriculture, Henan University of Science and Technology, Luoyang, Henan, China
- Henan Engineering Research Center for Rural Human Settlement, Luoyang, Henan, China
- Luoyang Key Laboratory of Symbiotic Microorganism and Green Development, Luoyang, Henan, China
| | - Zhen Wang
- College of Agriculture, Henan University of Science and Technology, Luoyang, Henan, China
- Henan Engineering Research Center for Rural Human Settlement, Luoyang, Henan, China
- Luoyang Key Laboratory of Symbiotic Microorganism and Green Development, Luoyang, Henan, China
| | - Shan-Wei Wu
- College of Agriculture, Henan University of Science and Technology, Luoyang, Henan, China
- Henan Engineering Research Center for Rural Human Settlement, Luoyang, Henan, China
- Luoyang Key Laboratory of Symbiotic Microorganism and Green Development, Luoyang, Henan, China
| | - Jia-Kai Gao
- College of Agriculture, Henan University of Science and Technology, Luoyang, Henan, China
- Henan Engineering Research Center for Rural Human Settlement, Luoyang, Henan, China
- Luoyang Key Laboratory of Symbiotic Microorganism and Green Development, Luoyang, Henan, China
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Hasanaliyeva G, Sufar EK, Wang J, Rempelos L, Volakakis N, Iversen PO, Leifert C. Effects of Agricultural Intensification on Mediterranean Diets: A Narrative Review. Foods 2023; 12:3779. [PMID: 37893672 PMCID: PMC10606286 DOI: 10.3390/foods12203779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 10/05/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
INTRODUCTION Mediterranean diets (MedDiets) are linked to substantial health benefits. However, there is also growing evidence that the intensification of food production over the last 60 years has resulted in nutritionally relevant changes in the composition of foods that may augment the health benefits of MedDiets. OBJECTIVE To synthesize, summarize, and critically evaluate the currently available evidence for changes in food composition resulting from agricultural intensification practices and their potential impact on the health benefits of MedDiets. METHODS We summarized/synthesized information from (i) systematic literature reviews/meta-analyses and more recently published articles on composition differences between conventional and organic foods, (ii) desk studies which compared food composition data from before and after agricultural intensification, (iii) recent retail and farm surveys and/or factorial field experiments that identified specific agronomic practices responsible for nutritionally relevant changes in food composition, and (iv) a recent systematic literature review and a small number of subsequently published observational and dietary intervention studies that investigated the potential health impacts of changes in food composition resulting from agricultural intensification. RESULTS AND DISCUSSION There has been growing evidence that the intensification of food production has resulted in (i) lower concentrations of nutritionally desirable compounds (e.g., phenolics, certain vitamins, mineral micronutrients including Se, Zn, and omega-3 fatty acids, α-tocopherol) and/or (ii) higher concentrations of nutritionally undesirable or toxic compounds (pesticide residues, cadmium, omega-6 fatty acids) in many of the foods (including wholegrain cereals, fruit and vegetables, olive oil, dairy products and meat from small ruminants, and fish) that are thought to contribute to the health benefits associated with MedDiets. The evidence for negative health impacts of consuming foods from intensified conventional production systems has also increased but is still limited and based primarily on evidence from observational studies. Limitations and gaps in the current evidence base are discussed. Conclusions: There is now substantial evidence that the intensification of agricultural food production has resulted in a decline in the nutritional quality of many of the foods that are recognized to contribute to the positive health impacts associated with adhering to traditional MedDiets. Further research is needed to quantify to what extent this decline augments the positive health impacts of adhering to a traditional MedDiet.
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Affiliation(s)
- Gultekin Hasanaliyeva
- School of Animal, Rural and Environmental Sciences, Brackenhurst Campus, Nottingham Trent University, Nottinghamshire NG25 0QF, UK
- Nafferton Ecological Farming Group, Newcastle University, Newcastle upon Tyne NE1 7RU, UK; (E.K.S.)
| | - Enas Khalid Sufar
- Nafferton Ecological Farming Group, Newcastle University, Newcastle upon Tyne NE1 7RU, UK; (E.K.S.)
| | - Juan Wang
- Nafferton Ecological Farming Group, Newcastle University, Newcastle upon Tyne NE1 7RU, UK; (E.K.S.)
- Department of Clinical Nutrition, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, China
| | - Leonidas Rempelos
- Nafferton Ecological Farming Group, Newcastle University, Newcastle upon Tyne NE1 7RU, UK; (E.K.S.)
- Lincoln Institute for Agri-Food Technology, University of Lincoln, Lincoln LN2 2LG, UK
| | - Nikolaos Volakakis
- Nafferton Ecological Farming Group, Newcastle University, Newcastle upon Tyne NE1 7RU, UK; (E.K.S.)
- Geokomi Plc, P.O. Box 21, GR70200 Sivas Festos, Greece
| | - Per Ole Iversen
- Department of Nutrition, IMB, University of Oslo, 0317 Oslo, Norway
- Department of Haematology, Oslo University Hospital, 0424 Oslo, Norway
| | - Carlo Leifert
- Department of Nutrition, IMB, University of Oslo, 0317 Oslo, Norway
- SCU Plant Science, Southern Cross University, Military Rd., Lismore, NSW 2480, Australia
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20
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Akbar M, Chohan SA, Yasin NA, Ahmad A, Akram W, Nazir A. Mycorrhizal inoculation enhanced tillering in field grown wheat, nutritional enrichment and soil properties. PeerJ 2023; 11:e15686. [PMID: 37719109 PMCID: PMC10504892 DOI: 10.7717/peerj.15686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 06/14/2023] [Indexed: 09/19/2023] Open
Abstract
To meet food security, commercial fertilizers are available to boost wheat yield, but there are serious ill effects associated with these fertilizers. Amongst various organic alternatives, inoculating crop fields with mycorrhizal species is the most promising option. Although, mycorrhizae are known to enhance wheat yield, but how the mycorrhizae influence different yield and quality parameters of wheat, is not clear. Therefore, this study was undertaken to investigate the influence of indigenous mycorrhizal species on the growth of wheat, its nutritional status and soil properties, in repeated set of field experiments. In total 11 species of mycorrhizae were isolated from the experimental sites with Claroideoglomus, being the most dominant one. Five different treatments were employed during the present study, keeping plot size for each replicate as 6 × 2 m. Introduction of consortia of mycorrhizae displayed a significant increase in number of tillers/plant (49.5%), dry biomass (17.4%), grain yield (21.2%) and hay weight (16.7%). However, there was non-significant effect of mycorrhizal inoculation on 1,000 grains weight. Moreover, protein contents were increased to 24.2%. Zinc, iron, phosphorus and potassium concentrations were also increased to 24%, 21%, 30.9% and 14.8%, respectively, in wheat grains. Enhancement effects were also noted on soil fertility such as soil organic carbon % age, available phosphorus and potassium were increased up to 64.7%, 35.8% and 23.9%, respectively. Herein, we concluded that mycorrhizal introduction in wheat fields significantly increased tillering in wheat and this increased tillering resulted in overall increase in wheat biomass/yield. Mycorrhizae also enhanced nutritional attributes of wheat grains as well as soil fertility. The use of mycorrhizae will help to reduce our dependance on synthetic fertilizers in sustainable agriculture.
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Affiliation(s)
- Muhammad Akbar
- Department of Botany, University of Gujrat, Gujrat, Punjab, Pakistan
| | - Safeer A. Chohan
- Department of Botany, University of Gujrat, Gujrat, Punjab, Pakistan
| | - Nasim A. Yasin
- SSG, RO-II Department, University of the Punjab, Lahore, Punjab, Pakistan
| | - Aqeel Ahmad
- University of Chinese Academy of Sciences, Beijing, Beijing, China
| | - Waheed Akram
- Department of Plant Pathology, University of the Punjab, Lahore, Punjab, Pakistan
| | - Abdul Nazir
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad, Pakistan
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Abdalla M, Bitterlich M, Jansa J, Püschel D, Ahmed MA. The role of arbuscular mycorrhizal symbiosis in improving plant water status under drought. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:4808-4824. [PMID: 37409696 DOI: 10.1093/jxb/erad249] [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: 12/21/2022] [Accepted: 06/28/2023] [Indexed: 07/07/2023]
Abstract
Arbuscular mycorrhizal fungi (AMF) have been presumed to ameliorate crop tolerance to drought. Here, we review the role of AMF in maintaining water supply to plants from drying soils and the underlying biophysical mechanisms. We used a soil-plant hydraulic model to illustrate the impact of several AMF mechanisms on plant responses to edaphic drought. The AMF enhance the soil's capability to transport water and extend the effective root length, thereby attenuating the drop in matric potential at the root surface during soil drying. The synthesized evidence and the corresponding simulations demonstrate that symbiosis with AMF postpones the stress onset limit, which is defined as the disproportionality between transpiration rates and leaf water potentials, during soil drying. The symbiosis can thus help crops survive extended intervals of limited water availability. We also provide our perspective on future research needs and call for reconciling the dynamic changes in soil and root hydraulics in order to better understand the role of AMF in plant water relations in the face of climate changes.
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Affiliation(s)
- Mohanned Abdalla
- Chair of Root-Soil Interaction, School of Life Sciences, Technical University of Munich, Freising, Germany
- Chair of Soil Physics, Bayreuth Center of Ecology and Environmental Research (BayCEER), University of Bayreuth, Bayreuth, Germany
- Department of Horticulture, Faculty of Agriculture, University of Khartoum, Khartoum North, Sudan
| | - Michael Bitterlich
- Humboldt-Universität zu Berlin, Thaer-Institute, Division Urban Plant Ecophysiology, Berlin, Germany
| | - Jan Jansa
- Laboratory of Fungal Biology, Institute of Microbiology, Czech Academy of Sciences, Prague, Czech Republic
| | - David Püschel
- Department of Mycorrhizal Symbioses, Institute of Botany of the Czech Academy of Sciences, Průhonice, Czech Republic
| | - Mutez A Ahmed
- Chair of Root-Soil Interaction, School of Life Sciences, Technical University of Munich, Freising, Germany
- Chair of Soil Physics, Bayreuth Center of Ecology and Environmental Research (BayCEER), University of Bayreuth, Bayreuth, Germany
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22
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Koziol L, Bever JD. Crop Productivity Boosters: Native Mycorrhizal Fungi from an Old-Growth Grassland Benefits Tomato ( Solanum lycopersicum) and Pepper ( Capsicum annuum) Varieties in Organically Farmed Soils. Microorganisms 2023; 11:2012. [PMID: 37630572 PMCID: PMC10457834 DOI: 10.3390/microorganisms11082012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/28/2023] [Accepted: 07/29/2023] [Indexed: 08/27/2023] Open
Abstract
This paper investigates the response of five tomato and five pepper varieties to native arbuscular mycorrhizal (AM) fungal inoculation in an organic farming system. The field experiment was conducted across a growing season at a working organic farm in Lawrence, KS, USA. The researchers hypothesized that native AM fungi inoculation would improve crop biomass production for both crop species, but that the magnitude of response would depend on crop cultivar. The results showed that both crops were significantly positively affected by inoculation. AM fungal inoculation consistently improved total pepper biomass throughout the experiment (range of +2% to +8% depending on the harvest date), with a +3.7% improvement at the final harvest for inoculated plants. An interaction between pepper variety and inoculation treatment was sometimes observed, indicating that some pepper varieties were more responsive to AM fungi than others. Beginning at the first harvest, tomatoes showed a consistent positive response to AM fungal inoculation among varieties. Across the experiment, AM fungi-inoculated tomatoes had +10% greater fruit biomass, which was driven by a +20% increase in fruit number. The study highlights the potential benefits of using native AM fungi as a soil amendment in organic farmed soils to improve pepper and tomato productivity.
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Affiliation(s)
- Liz Koziol
- Kansas Biological Station and Ecology and Evolutionary Biology, University of Kansas, Lawrence, KS 66047, USA
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23
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Roy J, Reichel R, Brüggemann N, Rillig MC. Functional, not Taxonomic, Composition of Soil Fungi Reestablishes to Pre-mining Initial State After 52 Years of Recultivation. MICROBIAL ECOLOGY 2023; 86:213-223. [PMID: 35821127 PMCID: PMC10293406 DOI: 10.1007/s00248-022-02058-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 06/09/2022] [Indexed: 06/15/2023]
Abstract
Open-cast mining leads to the loss of naturally developed soils and their ecosystem functions and services. Soil restoration after mining aims to restore the agricultural productivity in which the functions of the fungal community play a crucial role. Whether fungi reach a comparable functional state as in the soil before mining within half a century of recultivation is still unanswered. Here, we characterised the soil fungal community using ITS amplicon Illumina sequencing across a 52-year chronosequence of agricultural recultivation after open-cast mining in northern Europe. Both taxonomic and functional community composition showed profound shifts over time, which could be attributed to the changes in nutrient status, especially phosphorus availability. However, taxonomic composition did not reach the pre-mining state, whereas functional composition did. Importantly, we identified a positive development of arbuscular mycorrhizal root fungal symbionts after the initial three years of alfalfa cultivation, followed by a decline after conversion to conventional farming, with arbuscular mycorrhizal fungi being replaced by soil saprobes. We conclude that appropriate agricultural management can steer the fungal community to its functional pre-mining state despite stochasticity in the reestablishment of soil fungal communities. Nonetheless, conventional agricultural management results in the loss of plant symbionts, favouring non-symbiotic fungi.
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Affiliation(s)
- Julien Roy
- Institut Für Biologie, Ökologie Der Pflanzen, Freie Universität Berlin, 14195, Berlin, Germany.
- Brandenburg Institute of Advanced Biodiversity Research, 14195, Berlin, Germany.
| | - Rüdiger Reichel
- Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, Agrosphere (IBG-3), 52425, Jülich, Germany
| | - Nicolas Brüggemann
- Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, Agrosphere (IBG-3), 52425, Jülich, Germany
| | - Matthias C Rillig
- Institut Für Biologie, Ökologie Der Pflanzen, Freie Universität Berlin, 14195, Berlin, Germany
- Brandenburg Institute of Advanced Biodiversity Research, 14195, Berlin, Germany
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24
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Fresno DH, Munné-Bosch S. Organ-specific responses during acclimation of mycorrhizal and non-mycorrhizal tomato plants to a mild water stress reveal differential local and systemic hormonal and nutritional adjustments. PLANTA 2023; 258:32. [PMID: 37368074 PMCID: PMC10300162 DOI: 10.1007/s00425-023-04192-2] [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: 03/12/2023] [Accepted: 06/20/2023] [Indexed: 06/28/2023]
Abstract
MAIN CONCLUSION Tomato plant acclimation to a mild water stress implied tissue-specific hormonal and nutrient adjustments, being the root one of the main modulators of this response. Phytohormones are key regulators of plant acclimation to water stress. However, it is not yet clear if these hormonal responses follow specific patterns depending on the plant tissue. In this study, we evaluated the organ-specific physiological and hormonal responses to a 14 day-long mild water stress in tomato plants (Solanum lycopersicum cv. Moneymaker) in the presence or absence of the arbuscular mycorrhizal fungus Rhizoglomus irregulare, a frequently used microorganism in agriculture. Several physiological, production, and nutritional parameters were evaluated throughout the experiments. Additionally, endogenous hormone levels in roots, leaves, and fruits at different developmental stages were quantified by ultrahigh-performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS). Water deficit drastically reduced shoot growth, while it did not affect fruit production. In contrast, fruit production was enhanced by mycorrhization regardless of the water treatment. The main tissue affected by water stress was the root system, where huge rearrangements in different nutrients and stress-related and growth hormones took place. Abscisic acid content increased in every tissue and fruit developmental stage, suggesting a systemic response to drought. On the other hand, jasmonate and cytokinin levels were generally reduced upon water stress, although this response was dependent on the tissue and the hormonal form. Finally, mycorrhization improved plant nutritional status content of certain macro and microelements, specially at the roots and ripe fruits, while it affected jasmonate response in the roots. Altogether, our results suggest a complex response to drought that consists in systemic and local combined hormonal and nutrient responses.
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Affiliation(s)
- David H Fresno
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028, Barcelona, Spain
- Institute of Nutrition and Food Safety (INSA), Faculty of Biology, University of Barcelona, 08028, Barcelona, Spain
| | - Sergi Munné-Bosch
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028, Barcelona, Spain.
- Institute of Nutrition and Food Safety (INSA), Faculty of Biology, University of Barcelona, 08028, Barcelona, Spain.
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25
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Abarca C, Simón MR, Esquisabel E, Velázquez MS. Effect of spontaneous arbuscular mycorrhizal colonization in bread wheat varieties on the incidence of foliar diseases and grain yield. J Biosci 2023. [DOI: 10.1007/s12038-023-00335-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
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Wang L, Zhang L, George TS, Feng G. A core microbiome in the hyphosphere of arbuscular mycorrhizal fungi has functional significance in organic phosphorus mineralization. THE NEW PHYTOLOGIST 2023; 238:859-873. [PMID: 36444521 DOI: 10.1111/nph.18642] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 11/18/2022] [Indexed: 06/16/2023]
Abstract
The mycorrhizal pathway is an important phosphorus (P) uptake pathway for more than two-thirds of land plants. The arbuscular mycorrhizal (AM) fungi-associated hyphosphere microbiome has been considered as the second genome of mycorrhizal P uptake pathway and functionality in mobilizing soil organic P (Po). However, whether there is a core microbiome in the hyphosphere and how this is implicated in mining soil Po are less understood. We established on-site field trials located in humid, semiarid, and arid zones and a microcosm experiment in a glasshouse with specific AM fungi and varying soil types to answer the above questions. The hyphosphere microbiome of AM fungi enhanced soil phosphatase activity and promoted Po mineralization in all sites. Although the assemblage of hyphosphere microbiomes identified in three climate zones was mediated by environmental factors, we detected a core set in three sites and the subsequent microcosm experiment. The core members were co-enriched in the hyphosphere and dominated by Alphaproteobacteria, Actinobacteria, and Gammaproteobacteria. Moreover, these core bacterial members aggregate into stable guilds that contributed to phosphatase activity. The core hyphosphere microbiome is taxonomically conserved and provides functions, with respect to the mineralization of Po, that AM fungi lack.
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Affiliation(s)
- Letian Wang
- College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Beijing, 100193, China
| | - Lin Zhang
- College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Beijing, 100193, China
| | | | - Gu Feng
- College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Beijing, 100193, China
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Cosme M. Mycorrhizas drive the evolution of plant adaptation to drought. Commun Biol 2023; 6:346. [PMID: 36997637 PMCID: PMC10063553 DOI: 10.1038/s42003-023-04722-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 03/14/2023] [Indexed: 04/03/2023] Open
Abstract
Plant adaptation to drought facilitates major ecological transitions, and will likely play a vital role under looming climate change. Mycorrhizas, i.e. strategic associations between plant roots and soil-borne symbiotic fungi, can exert strong influence on the tolerance to drought of extant plants. Here, I show how mycorrhizal strategy and drought adaptation have been shaping one another throughout the course of plant evolution. To characterize the evolutions of both plant characters, I applied a phylogenetic comparative method using data of 1,638 extant species globally distributed. The detected correlated evolution unveiled gains and losses of drought tolerance occurring at faster rates in lineages with ecto- or ericoid mycorrhizas, which were on average about 15 and 300 times faster than in lineages with the arbuscular mycorrhizal and naked root (non-mycorrhizal alone or with facultatively arbuscular mycorrhizal) strategy, respectively. My study suggests that mycorrhizas can play a key facilitator role in the evolutionary processes of plant adaptation to critical changes in water availability across global climates.
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Affiliation(s)
- Marco Cosme
- Mycology, Earth and Life Institute, Université Catholique de Louvain, Croix du sud 2, 1348, Louvain‑la‑Neuve, Belgium.
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28
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Liu Y, Lu J, Cui L, Tang Z, Ci D, Zou X, Zhang X, Yu X, Wang Y, Si T. The multifaceted roles of Arbuscular Mycorrhizal Fungi in peanut responses to salt, drought, and cold stress. BMC PLANT BIOLOGY 2023; 23:36. [PMID: 36642709 PMCID: PMC9841720 DOI: 10.1186/s12870-023-04053-w] [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: 09/15/2022] [Accepted: 01/09/2023] [Indexed: 05/11/2023]
Abstract
BACKGROUND Arbuscular Mycorrhizal Fungi (AMF) are beneficial microorganisms in soil-plant interactions; however, the underlying mechanisms regarding their roles in legumes environmental stress remain elusive. Present trials were undertaken to study the effect of AMF on the ameliorating of salt, drought, and cold stress in peanut (Arachis hypogaea L.) plants. A new product of AMF combined with Rhizophagus irregularis SA, Rhizophagus clarus BEG142, Glomus lamellosum ON393, and Funneliformis mosseae BEG95 (1: 1: 1: 1, w/w/w/w) was inoculated with peanut and the physiological and metabolomic responses of the AMF-inoculated and non-inoculated peanut plants to salt, drought, and cold stress were comprehensively characterized, respectively. RESULTS AMF-inoculated plants exhibited higher plant growth, leaf relative water content (RWC), net photosynthetic rate, maximal photochemical efficiency of photosystem II (PSII) (Fv/Fm), activities of antioxidant enzymes, and K+: Na+ ratio while lower leaf relative electrolyte conductivity (REC), concentration of malondialdehyde (MDA), and the accumulation of reactive oxygen species (ROS) under stressful conditions. Moreover, the structures of chloroplast thylakoids and mitochondria in AMF-inoculated plants were less damaged by these stresses. Non-targeted metabolomics indicated that AMF altered numerous pathways associated with organic acids and amino acid metabolisms in peanut roots under both normal-growth and stressful conditions, which were further improved by the osmolytes accumulation data. CONCLUSION This study provides a promising AMF product and demonstrates that this AMF combination could enhance peanut salt, drought, and cold stress tolerance through improving plant growth, protecting photosystem, enhancing antioxidant system, and regulating osmotic adjustment.
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Affiliation(s)
- Yuexu Liu
- Shandong Provincial Key Laboratory of Dryland Farming Technology,College of Agronomy, Qingdao Agricultural University, Qingdao, 266109, China
| | - Jinhao Lu
- Shandong Provincial Key Laboratory of Dryland Farming Technology,College of Agronomy, Qingdao Agricultural University, Qingdao, 266109, China
| | - Li Cui
- Institute of Crop Germplasm Resources, Shandong Academy of Agricultural Sciences (SAAS), Jinan, 250100, China
| | - Zhaohui Tang
- Institute of Crop Germplasm Resources, Shandong Academy of Agricultural Sciences (SAAS), Jinan, 250100, China
| | - Dunwei Ci
- Shandong Peanut Research Institute, Qingdao, 266199, China
| | - Xiaoxia Zou
- Shandong Provincial Key Laboratory of Dryland Farming Technology,College of Agronomy, Qingdao Agricultural University, Qingdao, 266109, China
| | - Xiaojun Zhang
- Shandong Provincial Key Laboratory of Dryland Farming Technology,College of Agronomy, Qingdao Agricultural University, Qingdao, 266109, China
| | - Xiaona Yu
- Shandong Provincial Key Laboratory of Dryland Farming Technology,College of Agronomy, Qingdao Agricultural University, Qingdao, 266109, China
| | - Yuefu Wang
- Shandong Provincial Key Laboratory of Dryland Farming Technology,College of Agronomy, Qingdao Agricultural University, Qingdao, 266109, China
| | - Tong Si
- Shandong Provincial Key Laboratory of Dryland Farming Technology,College of Agronomy, Qingdao Agricultural University, Qingdao, 266109, China.
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Kalapchieva S, Tringovska I, Bozhinova R, Kosev V, Hristeva T. Population Response of Rhizosphere Microbiota of Garden Pea Genotypes to Inoculation with Arbuscular Mycorrhizal Fungi. Int J Mol Sci 2023; 24:1119. [PMID: 36674632 PMCID: PMC9866347 DOI: 10.3390/ijms24021119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/23/2022] [Accepted: 01/03/2023] [Indexed: 01/11/2023] Open
Abstract
This study of a legume's rhizosphere in tripartite symbiosis focused on the relationships between the symbionts and less on the overall rhizosphere microbiome. We used an experimental model with different garden pea genotypes inoculated with AM fungi (Rhizophagus irregularis and with a mix of AM species) to study their influence on the population levels of main trophic groups of soil microorganisms as well as their structure and functional relationships in the rhizosphere microbial community. The experiments were carried out at two phenological cycles of the plants. Analyzes were performed according to classical methods: microbial population density defined as CUF/g a.d.s. and root colonization rate with AMF (%). We found a proven dominant effect of AMF on the densities of micromycetes and actinomycetes in the direction of reduction, suggesting antagonism, and on ammonifying, phosphate-solubilizing and free-living diazotrophic Azotobacter bacteria in the direction of stimulation, an indicator of mutualistic relationships. We determined that the genotype was decisive for the formation of populations of bacteria immobilizing mineral NH4+-N and bacteria Rhizobium. We reported significant two-way relationships between trophic groups related associated with soil nitrogen and phosphorus ions availability. The preserved proportions between trophic groups in the microbial communities were indicative of structural and functional stability.
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Affiliation(s)
- Slavka Kalapchieva
- Maritsa Vegetable Crops Research Institute, Agricultural Academy, 4003 Plovdiv, Bulgaria
| | - Ivanka Tringovska
- Maritsa Vegetable Crops Research Institute, Agricultural Academy, 4003 Plovdiv, Bulgaria
| | - Radka Bozhinova
- Tobacco and Tobacco Products Institute, Agricultural Academy, 4108 Plovdiv, Bulgaria
| | - Valentin Kosev
- Institute of Forage Crops, Agricultural Academy, 5800 Pleven, Bulgaria
| | - Tsveta Hristeva
- Tobacco and Tobacco Products Institute, Agricultural Academy, 4108 Plovdiv, Bulgaria
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Xiong C, Lu Y. Microbiomes in agroecosystem: Diversity, function and assembly mechanisms. ENVIRONMENTAL MICROBIOLOGY REPORTS 2022; 14:833-849. [PMID: 36184075 DOI: 10.1111/1758-2229.13126] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Accepted: 09/08/2022] [Indexed: 06/16/2023]
Abstract
Soils are a main repository of biodiversity harbouring immense diversity of microbial species that plays a central role in fundamental ecological processes and acts as the seed bank for emergence of the plant microbiome in cropland ecosystems. Crop-associated microbiomes play an important role in shaping plant performance, which includes but not limited to nutrient uptake, disease resistance, and abiotic stress tolerance. Although our understanding of structure and function of soil and plant microbiomes has been rapidly advancing, most of our knowledge comes from ecosystems in natural environment. In this review, we present an overview of the current knowledge of diversity and function of microbial communities along the soil-plant continuum in agroecosystems. To characterize the ecological mechanisms for community assembly of soil and crop microbiomes, we explore how crop host and environmental factors such as plant species and developmental stage, pathogen invasion, and land management shape microbiome structure, microbial co-occurrence patterns, and crop-microbiome interactions. Particularly, the relative importance of deterministic and stochastic processes in microbial community assembly is illustrated under different environmental conditions, and potential sources and keystone taxa of the crop microbiome are described. Finally, we highlight a few important questions and perspectives in future crop microbiome research.
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Affiliation(s)
- Chao Xiong
- College of Urban and Environmental Sciences, Peking University, Beijing, People's Republic of China
| | - Yahai Lu
- College of Urban and Environmental Sciences, Peking University, Beijing, People's Republic of China
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McGale E, Sanders IR. Integrating plant and fungal quantitative genetics to improve the ecological and agricultural applications of mycorrhizal symbioses. Curr Opin Microbiol 2022; 70:102205. [PMID: 36201974 DOI: 10.1016/j.mib.2022.102205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 08/12/2022] [Accepted: 08/18/2022] [Indexed: 01/25/2023]
Abstract
Finding and targeting genes that quantitatively contribute to agricultural and ecological processes progresses food production and conservation efforts. Typically, quantitative genetic approaches link variants in a single organism's genome with a trait of interest. Recently, genome-to-genome mapping has found genome variants interacting between species to produce the result of a multiorganism (including multikingdom) interaction. These were plant and bacterial pathogen genome interactions; plant-fungal coquantitative genetics have not yet been applied. Plant-mycorrhizae symbioses exist across most biomes, for a majority of land plants, including crop plants, and manipulate many traits from single organisms to ecosystems for which knowing the genetic basis would be useful. The availability of Rhizophagus irregularis mycorrhizal isolates, with genomic information, makes dual-genome methods with beneficial mutualists accessible and imminent.
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Affiliation(s)
- Erica McGale
- Department of Ecology and Evolution, Biophore Building, University of Lausanne, 1015 Lausanne, Switzerland
| | - Ian R Sanders
- Department of Ecology and Evolution, Biophore Building, University of Lausanne, 1015 Lausanne, Switzerland.
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32
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Transcriptome analysis reveals the regulatory mode by which NAA promotes the growth of Armillaria gallica. PLoS One 2022; 17:e0277701. [PMID: 36409681 PMCID: PMC9678268 DOI: 10.1371/journal.pone.0277701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 11/02/2022] [Indexed: 11/22/2022] Open
Abstract
A symbiotic relationship is observed between Armillaria and the Chinese herbal medicine Gastrodia elata (G. elata). Armillaria is a nutrient source for the growth of G. elata, and its nutrient metabolism efficiency affects the growth and development of G. elata. Auxin has been reported to stimulate Armillaria species, but the molecular mechanism remains unknown. We found that naphthalene acetic acid (NAA) can also promote the growth of A. gallica. Moreover, we identified a total of 2071 differentially expressed genes (DEGs) by analyzing the transcriptome sequencing data of A. gallica at 5 and 10 hour of NAA treatment. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses showed that these unigenes were significantly enriched in the metabolism pathways of arginine, proline, propanoate, phenylalanine and tryptophan. The expression levels of the general amino acid permease (Gap), ammonium transporter (AMT), glutamate dehydrogenase (GDH), glutamine synthetase (GS), Zn(II) 2Cys6 and C2H2 transcription factor genes were upregulated. Our transcriptome analysis showed that the amino acid and nitrogen metabolism pathways in Armillaria were rapidly induced within hours after NAA treatment. These results provide valuable insights into the molecular mechanisms by which NAA promotes the growth of Armillaria species.
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Qin M, Li L, Miranda J, Tang Y, Song B, Oosthuizen MK, Wei W. Experimental duration determines the effect of arbuscular mycorrhizal fungi on plant biomass in pot experiments: A meta-analysis. FRONTIERS IN PLANT SCIENCE 2022; 13:1024874. [PMID: 36407631 PMCID: PMC9671359 DOI: 10.3389/fpls.2022.1024874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
Arbuscular mycorrhizal fungi (AMF) play various important roles in promoting plant growth. Numerous environmental and evolutionary factors influence the response of plants to AMF. However, the importance of the individual factors on the effects of AMF on plant biomass is not clearly understood. In this study, a meta-analysis using 1,640 observations from 639 published articles related to the influence of AMF on the plant shoot, root, and total biomass was performed; 13 different experimental setting factors that had an impact on the influence of AMF and their importance were quantitatively synthesized. The meta-analysis showed that AMF had positive effects on the plant shoot, root, and total biomass; moreover, the experimental duration, plant root-to-shoot ratio (R/S), AMF root length colonization, plant family, pot size, soil texture, and the soil pH all influenced the effects of AMF on the shoot, root, and total biomass. In addition, the plant root system and plant functional type had impacts on the effect of AMF on shoot biomass; AMF guild also impacted the effect of AMF on root biomass. Of these factors, the experimental duration, plant R/S, and pot size were the three most important predicting the effects of AMF on the plant shoot, root, and total biomass. This study comprehensively assessed the importance of the different factors that influenced the response of plants to AMF, highlighting that the experimental duration, plant R/S, and pot size should be taken into consideration in pot experiments in studies of the functions of AMF. Multiple unfavorable factors that may obscure or confound the observed functions of AMF should be excluded.
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Affiliation(s)
- Mingsen Qin
- Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education), China West Normal University, Nanchong, China
| | - Lei Li
- Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education), China West Normal University, Nanchong, China
| | | | - Yun Tang
- Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education), China West Normal University, Nanchong, China
| | - Bo Song
- Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education), China West Normal University, Nanchong, China
| | | | - Wangrong Wei
- Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education), China West Normal University, Nanchong, China
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Morales-Quintana L, Miño R, Mendez-Yañez A, Gundel PE, Ramos P. Do fungal-endosymbionts improve crop nutritional quality and tolerance to stress by boosting flavonoid-mediated responses? Food Res Int 2022; 161:111850. [DOI: 10.1016/j.foodres.2022.111850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 08/17/2022] [Accepted: 08/21/2022] [Indexed: 11/04/2022]
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Yang H, Fang C, Li Y, Wu Y, Fransson P, Rillig MC, Zhai S, Xie J, Tong Z, Zhang Q, Sheteiwy MS, Li F, Weih M. Temporal complementarity between roots and mycorrhizal fungi drives wheat nitrogen use efficiency. THE NEW PHYTOLOGIST 2022; 236:1168-1181. [PMID: 35927946 DOI: 10.1111/nph.18419] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 07/26/2022] [Indexed: 06/15/2023]
Abstract
Improving nitrogen (N) use efficiency (NUE) to reduce the application of N fertilisers in a way that benefits the environment and reduces farmers' costs is an ongoing objective for sustainable wheat production. However, whether and how arbuscular mycorrhizal fungi (AMF) affect NUE in wheat is still not well explored. Three independent but complementary experiments were conducted to decipher the contribution of roots and AMF to the N uptake and utilisation efficiency in wheat. We show a temporal complementarity pattern between roots and AMF in shaping NUE of wheat. Pre-anthesis N uptake efficiency mainly depends on root functional traits, but the efficiency to utilise the N taken up during pre-anthesis for producing grains (EN,g ) is strongly affected by AMF, which might increase the uptake of phosphorus and thereby improve photosynthetic carbon assimilation. Root association with AMF reduced the N remobilisation efficiency in varieties with high EN,g ; whilst the overall grain N concentration increased, due to a large improvement in post-anthesis N uptake supported by AMF and/or other microbes. The findings provide evidence for the importance of managing AMF in agroecosystems, and an opportunity to tackle the contradiction between maximising grain yield and protein concentration in wheat breeding.
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Affiliation(s)
- Haishui Yang
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
- Jiangsu Key Laboratory for Information Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095, China
| | - Chun Fang
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yifan Li
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yongcheng Wu
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Petra Fransson
- Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, Swedish University of Agricultural Sciences, 75007, Uppsala, Sweden
| | - Matthias C Rillig
- Institut für Biologie, Freie Universität Berlin, Altensteinstr. 6, 14195, Berlin, Germany
- Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), 14195, Berlin, Germany
| | - Silong Zhai
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Junjie Xie
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zongyi Tong
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Qian Zhang
- Research Institute of Forestry, Chinese Academy of Forestry, No. 1, Dongxiaofu, Xiangshan Road, Haidian District, Beijing, 100091, China
| | - Mohamed S Sheteiwy
- Department of Agronomy, Faculty of Agriculture, Mansoura University, Mansoura, 35516, Egypt
| | - Fengmin Li
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Martin Weih
- Department of Crop Production Ecology, Swedish University of Agricultural Sciences, 75007, Uppsala, Sweden
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Hui J, An X, Li Z, Neuhäuser B, Ludewig U, Wu X, Schulze WX, Chen F, Feng G, Lambers H, Zhang F, Yuan L. The mycorrhiza-specific ammonium transporter ZmAMT3;1 mediates mycorrhiza-dependent nitrogen uptake in maize roots. THE PLANT CELL 2022; 34:4066-4087. [PMID: 35880836 PMCID: PMC9516061 DOI: 10.1093/plcell/koac225] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 06/18/2022] [Indexed: 06/15/2023]
Abstract
Most plant species can form symbioses with arbuscular mycorrhizal fungi (AMFs), which may enhance the host plant's acquisition of soil nutrients. In contrast to phosphorus nutrition, the molecular mechanism of mycorrhizal nitrogen (N) uptake remains largely unknown, and its physiological relevance is unclear. Here, we identified a gene encoding an AMF-inducible ammonium transporter, ZmAMT3;1, in maize (Zea mays) roots. ZmAMT3;1 was specifically expressed in arbuscule-containing cortical cells and the encoded protein was localized at the peri-arbuscular membrane. Functional analysis in yeast and Xenopus oocytes indicated that ZmAMT3;1 mediated high-affinity ammonium transport, with the substrate NH4+ being accessed, but likely translocating uncharged NH3. Phosphorylation of ZmAMT3;1 at the C-terminus suppressed transport activity. Using ZmAMT3;1-RNAi transgenic maize lines grown in compartmented pot experiments, we demonstrated that substantial quantities of N were transferred from AMF to plants, and 68%-74% of this capacity was conferred by ZmAMT3;1. Under field conditions, the ZmAMT3;1-dependent mycorrhizal N pathway contributed >30% of postsilking N uptake. Furthermore, AMFs downregulated ZmAMT1;1a and ZmAMT1;3 protein abundance and transport activities expressed in the root epidermis, suggesting a trade-off between mycorrhizal and direct root N-uptake pathways. Taken together, our results provide a comprehensive understanding of mycorrhiza-dependent N uptake in maize and present a promising approach to improve N-acquisition efficiency via plant-microbe interactions.
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Affiliation(s)
- Jing Hui
- College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, MOE, China Agricultural University, Beijing, 100193, China
| | - Xia An
- College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, MOE, China Agricultural University, Beijing, 100193, China
| | - Zhibo Li
- College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, MOE, China Agricultural University, Beijing, 100193, China
| | - Benjamin Neuhäuser
- Department of Nutritional Crop Physiology, Institute of Crop Science, University of Hohenheim, Stuttgart, 70593, Germany
| | - Uwe Ludewig
- Department of Nutritional Crop Physiology, Institute of Crop Science, University of Hohenheim, Stuttgart, 70593, Germany
| | - Xuna Wu
- Department of Plant Systems Biology, Institute for Physiology and Biotechnology of Plants, University of Hohenheim, Stuttgart, 70593, Germany
| | - Waltraud X Schulze
- Department of Plant Systems Biology, Institute for Physiology and Biotechnology of Plants, University of Hohenheim, Stuttgart, 70593, Germany
| | - Fanjun Chen
- College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, MOE, China Agricultural University, Beijing, 100193, China
| | - Gu Feng
- College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, MOE, China Agricultural University, Beijing, 100193, China
| | - Hans Lambers
- School of Biological Science and Institute of Agriculture, University of Western Australia, Perth, WA6009, Australia
| | - Fusuo Zhang
- College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, MOE, China Agricultural University, Beijing, 100193, China
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Duell EB, Cobb AB, Wilson GWT. Effects of Commercial Arbuscular Mycorrhizal Inoculants on Plant Productivity and Intra-Radical Colonization in Native Grassland: Unintentional De-Coupling of a Symbiosis? PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11172276. [PMID: 36079657 PMCID: PMC9460666 DOI: 10.3390/plants11172276] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/23/2022] [Accepted: 08/29/2022] [Indexed: 05/10/2023]
Abstract
There has been a surge in industries built on the production of arbuscular mycorrhizal (AM) fungal-based inoculants in the past few decades. This is not surprising, given the positive effects of AM fungi on plant growth and nutritional status. However, there is growing concern regarding the quality and efficacy of commercial inoculants. To assess the potential benefits and negative consequences of commercial AM fungal inoculants in grasslands, we conducted a controlled growth chamber study assessing the productivity and AM fungal root colonization of nine grassland plant species grown in grassland soil with or without one of six commercial AM fungal products. Our research showed no evidence of benefit; commercial inoculants never increased native plant biomass, although several inoculants decreased the growth of native species and increased the growth of invasive plant species. In addition, two commercial products contained excessive levels of phosphorus or nitrogen and consistently reduced AM fungal root colonization, indicating an unintentional de-coupling of the symbiosis. As there is little knowledge of the ecological consequences of inoculation with commercial AM fungal products, it is critical for restoration practitioners, scientists, and native plant growers to assess the presence of local AM fungal communities before investing in unnecessary, or possibly detrimental, AM fungal products.
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Affiliation(s)
- Eric B. Duell
- Kansas Biological Survey and Center for Ecological Research, Lawrence, KS 66047, USA
- Correspondence:
| | - Adam B. Cobb
- Soil Food Web School, LLC, Corvallis, OR 97330, USA
| | - Gail W. T. Wilson
- Department of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, OK 74075, USA
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Pons C, Müller C. Impacts of Drought Stress and Mycorrhizal Inoculation on the Performance of Two Spring Wheat Cultivars. PLANTS (BASEL, SWITZERLAND) 2022; 11:2187. [PMID: 36079569 PMCID: PMC9460616 DOI: 10.3390/plants11172187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/19/2022] [Accepted: 08/20/2022] [Indexed: 11/16/2022]
Abstract
Cereal production is becoming challenging, given ongoing climate change. Arbuscular mycorrhizal fungi (AMF) are discussed to mitigate effects of drought for plants and enhance nutrient uptake. Thus, we investigated the impacts of drought and mycorrhiza on the growth and allocation patterns of two cultivars of spring wheat (Triticum aestivum). Plants were grown under three irrigation regimes (well-watered, continuous or pulsed drought) and in three substrates (absence or presence of one or three AMF species). Applied water use efficiency (WUEapplied), harvest index (HI) and contents of carbon (C), nitrogen (N) and phosphorous (P) were determined when grains were watery ripe. When grains were hard, again, WUEapplied, HI and the thousand-kernel weight were measured. The WUEapplied and HI were lowest in plants under pulsed drought stress at the second harvest, while the thousand-kernel weight was lower in mycorrhized compared to non-mycorrhized plants. The C/N ratio dropped with increasing drought stress but was enhanced by mycorrhiza, while the P content was surprisingly unaffected by mycorrhiza. The total root length colonization was higher in substrates with the AMF mix, but overall, fungal presence could not alleviate the effects of drought. Our results highlight the complexity of responses to challenging environments in this highly domesticated species.
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Affiliation(s)
| | - Caroline Müller
- Department of Chemical Ecology, Bielefeld University, 33615 Bielefeld, Germany
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Sagnon A, Iwasaki S, Tibiri EB, Zongo NA, Compaore E, Bonkoungou IJO, Nakamura S, Traore M, Barro N, Tiendrebeogo F, Sarr PS. Amendment with Burkina Faso phosphate rock-enriched composts alters soil chemical properties and microbial structure, and enhances sorghum agronomic performance. Sci Rep 2022; 12:13945. [PMID: 35978091 PMCID: PMC9386011 DOI: 10.1038/s41598-022-18318-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 08/09/2022] [Indexed: 11/16/2022] Open
Abstract
Low soil available phosphorus (P) severely limits crop production in sub-Saharan Africa. The present study evaluated phosphate rock-enriched composts as locally available low-cost fertilizers for sorghum production. The treatments consisted of sorghum straw, compost (COMP), phosphate rock (BPR), BPR-enriched compost (P-COMP), BPR-rhizosphere soil-enriched compost (P-COMP-SOIL), nitrogen-phosphorus-potassium treatment (NPK, 60–39–25), and control (NK, 60–25). Sorghum straw and compost were applied at 1.34 tons ha−1. N, P, and K in all treatments, excluding the control, were adjusted to 60, 39, and 25 kg ha−1, with urea, BPR, and KCl, respectively. Sorghum vr. kapelga was cultivated and soil samples were collected at the S5, S8, and S9 growth stages. P-COMP-SOIL and NPK yielded better sorghum yields than the other treatments. The rhizosphere soil of P-COMP-SOIL had high abundance of soil bacteria and AMF, and genes involved in P solubilization, such as: acid phosphatase (aphA), phosphonatase (phnX), glucose dehydrogenase (gcd), pyrroloquinoline quinone (pqqE), phosphate-specific transporter (pstS). The superior performance of the P-COMP-SOIL was associated with its higher available P content and microbial abundance. Multivariate analysis also revealed vital contributions of N, carbon, and exchangeable cations to sorghum growth. Soils could be amended with phosphate rock-rhizosphere soil-enriched composts, as an alternative to chemical fertilizers.
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Affiliation(s)
- Adama Sagnon
- Laboratory of Molecular Biology, Epidemiology and Monitoring of Bacteria and Virus Transmitted by Food (LaBESTA), University Joseph KI-ZERBO, 03 BP 7021, Ouagadougou 03, Burkina Faso.,Laboratory of Virology and Plant Biotechnology, Institute of Environment and Agricultural Research (INERA), 01 BP 476, Ouagadougou 01, Burkina Faso
| | - Shinya Iwasaki
- Rural Development Division, Japan International Research Center for Agricultural Sciences, Tsukuba, 305-8686, Japan
| | - Ezechiel Bionimian Tibiri
- Laboratory of Virology and Plant Biotechnology, Institute of Environment and Agricultural Research (INERA), 01 BP 476, Ouagadougou 01, Burkina Faso
| | - Nongma Armel Zongo
- Department of Natural Resources Management and Production Systems, Institute of Environment and Agricultural Research (INERA), 01 BP 476, Ouagadougou 01, Burkina Faso
| | - Emmanuel Compaore
- Department of Natural Resources Management and Production Systems, Institute of Environment and Agricultural Research (INERA), 01 BP 476, Ouagadougou 01, Burkina Faso
| | - Isidore Juste O Bonkoungou
- Laboratory of Molecular Biology, Epidemiology and Monitoring of Bacteria and Virus Transmitted by Food (LaBESTA), University Joseph KI-ZERBO, 03 BP 7021, Ouagadougou 03, Burkina Faso
| | - Satoshi Nakamura
- Crop, Livestock and Environment Division, Japan International Research Center for Agricultural Sciences, Tsukuba, 305-8686, Japan
| | - Mamoudou Traore
- Department of Natural Resources Management and Production Systems, Institute of Environment and Agricultural Research (INERA), 01 BP 476, Ouagadougou 01, Burkina Faso
| | - Nicolas Barro
- Laboratory of Molecular Biology, Epidemiology and Monitoring of Bacteria and Virus Transmitted by Food (LaBESTA), University Joseph KI-ZERBO, 03 BP 7021, Ouagadougou 03, Burkina Faso
| | - Fidele Tiendrebeogo
- Laboratory of Virology and Plant Biotechnology, Institute of Environment and Agricultural Research (INERA), 01 BP 476, Ouagadougou 01, Burkina Faso
| | - Papa Saliou Sarr
- Crop, Livestock and Environment Division, Japan International Research Center for Agricultural Sciences, Tsukuba, 305-8686, Japan.
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Edlinger A, Garland G, Hartman K, Banerjee S, Degrune F, García-Palacios P, Hallin S, Valzano-Held A, Herzog C, Jansa J, Kost E, Maestre FT, Pescador DS, Philippot L, Rillig MC, Romdhane S, Saghaï A, Spor A, Frossard E, van der Heijden MGA. Agricultural management and pesticide use reduce the functioning of beneficial plant symbionts. Nat Ecol Evol 2022; 6:1145-1154. [PMID: 35798840 PMCID: PMC7613230 DOI: 10.1038/s41559-022-01799-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 05/11/2022] [Indexed: 01/04/2023]
Abstract
Phosphorus (P) acquisition is key for plant growth. Arbuscular mycorrhizal fungi (AMF) help plants acquire P from soil. Understanding which factors drive AMF-supported nutrient uptake is essential to develop more sustainable agroecosystems. Here we collected soils from 150 cereal fields and 60 non-cropped grassland sites across a 3,000 km trans-European gradient. In a greenhouse experiment, we tested the ability of AMF in these soils to forage for the radioisotope 33P from a hyphal compartment. AMF communities in grassland soils were much more efficient in acquiring 33P and transferred 64% more 33P to plants compared with AMF in cropland soils. Fungicide application best explained hyphal 33P transfer in cropland soils. The use of fungicides and subsequent decline in AMF richness in croplands reduced 33P uptake by 43%. Our results suggest that land-use intensity and fungicide use are major deterrents to the functioning and natural nutrient uptake capacity of AMF in agroecosystems.
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Affiliation(s)
- Anna Edlinger
- Agroscope, Division of Agroecology and Environment, Plant-Soil Interactions Group, Zürich, Switzerland
- Department of Plant and Microbial Biology, University of Zürich, Zürich, Switzerland
| | - Gina Garland
- Agroscope, Division of Agroecology and Environment, Plant-Soil Interactions Group, Zürich, Switzerland
| | - Kyle Hartman
- Agroscope, Division of Agroecology and Environment, Plant-Soil Interactions Group, Zürich, Switzerland
| | - Samiran Banerjee
- Department of Microbiological Sciences, North Dakota State University, Fargo, ND, USA
| | - Florine Degrune
- Freie Universität Berlin, Institute of Biology, Berlin, Germany
- Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Berlin, Germany
- Soil Science and Environment Group, Changins, University of Applied Sciences and Arts Western Switzerland, Nyon, Switzerland
| | - Pablo García-Palacios
- Instituto de Ciencias Agrarias, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Sara Hallin
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Alain Valzano-Held
- Agroscope, Division of Agroecology and Environment, Plant-Soil Interactions Group, Zürich, Switzerland
| | - Chantal Herzog
- Agroscope, Division of Agroecology and Environment, Plant-Soil Interactions Group, Zürich, Switzerland
- Department of Plant and Microbial Biology, University of Zürich, Zürich, Switzerland
| | - Jan Jansa
- Institute of Microbiology, Czech Academy of Sciences, Prague, Czech Republic
| | - Elena Kost
- Agroscope, Division of Agroecology and Environment, Plant-Soil Interactions Group, Zürich, Switzerland
| | - Fernando T Maestre
- Instituto Multidisciplinar para el Estudio del Medio 'Ramón Margalef', Universidad de Alicante, Alicante, Spain
- Departamento de Ecología, Universidad de Alicante, Alicante, Spain
| | - David Sánchez Pescador
- Departamento de Farmacología, Farmacognosia y Botánica, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain
- Departamento de Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
| | - Laurent Philippot
- Department of Agroecology, University Bourgogne Franche Comte, INRAE, AgroSup Dijon, Dijon, France
| | - Matthias C Rillig
- Freie Universität Berlin, Institute of Biology, Berlin, Germany
- Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Berlin, Germany
| | - Sana Romdhane
- Department of Agroecology, University Bourgogne Franche Comte, INRAE, AgroSup Dijon, Dijon, France
| | - Aurélien Saghaï
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Ayme Spor
- Department of Agroecology, University Bourgogne Franche Comte, INRAE, AgroSup Dijon, Dijon, France
| | - Emmanuel Frossard
- ETH Zürich, Institute of Agricultural Sciences, Group of Plant Nutrition, Lindau, Switzerland
| | - Marcel G A van der Heijden
- Agroscope, Division of Agroecology and Environment, Plant-Soil Interactions Group, Zürich, Switzerland.
- Department of Plant and Microbial Biology, University of Zürich, Zürich, Switzerland.
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41
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Potential tradeoffs between effects of arbuscular mycorrhizal fungi inoculation, soil organic matter content and fertilizer application in raspberry production. PLoS One 2022; 17:e0269751. [PMID: 35849573 PMCID: PMC9292081 DOI: 10.1371/journal.pone.0269751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 05/27/2022] [Indexed: 11/23/2022] Open
Abstract
Ecological intensification has been proposed as an alternative paradigm for intensive agriculture to boost yield sustainably through utilizing ecosystem services. A prerequisite to achieving this is to understand the relations between multiple ecosystem services and production, while taking growth conditions such as nutrient availability into consideration. Here, we conducted a pot-field experiment to study the interactive effects of soil organic matter (SOM) content and arbuscular mycorrhizal fungi (AMF) inoculation on the production of raspberry (Rubus idaeus L.) under four levels of fertilizer application. Raspberry flower number, fruit number and yield only significantly increased with fertilizer inputs but were not impacted by SOM content or AMF inoculation. Fruit set and single berry weight were influenced by both SOM content and AMF inoculation, in complex three-way interactions with fertilizer application. Fruit set of AMF inoculated plants increased with fertilizer inputs in low SOM soils, but decreased with fertilizer inputs under high SOM soils, with the highest fruit set occurring at no fertilizer inputs. In low SOM soils, the relation between single berry weight and fertilizer application was more pronounced in inoculated plants than in non-inoculated plants, while in high SOM soils the relative benefits of AMF inoculation on single berry weight decreased with increasing fertilizer inputs. We attribute the lack of effects of AMF inoculation and SOM content on flower number, fruit number and yield mainly to potential tradeoffs between the experimental variables that all influence resource uptake by plant root systems. Our results suggest that potentially beneficial effects of AMF and SOM can be offset by each other, probably driven by the dynamic relations between AMF and the host plants. The findings reveal fundamental implications for managing AMF inoculation and SOM management simultaneously in real-world agricultural systems.
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Salomon MJ, Watts-Williams SJ, McLaughlin MJ, Bücking H, Singh BK, Hutter I, Schneider C, Martin FM, Vosatka M, Guo L, Ezawa T, Saito M, Declerck S, Zhu YG, Bowles T, Abbott LK, Smith FA, Cavagnaro TR, van der Heijden MG. Establishing a quality management framework for commercial inoculants containing arbuscular mycorrhizal fungi. iScience 2022; 25:104636. [PMID: 35800760 PMCID: PMC9254352 DOI: 10.1016/j.isci.2022.104636] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Microbial inoculants containing arbuscular mycorrhizal (AM) fungi are potential tools in increasing the sustainability of our food production systems. Given the demand for sustainable agriculture, the production of such inoculants has potential economic value and has resulted in a variety of commercial inoculants currently being advertised. However, their use is limited by inconsistent product efficacy and lack of consumer confidence. Here, we propose a framework that can be used to assess the quality and reliability of AM inoculants. First, we set out a range of basic quality criteria which are required to achieve reliable inoculants. This is followed by a standardized bioassay which can be used to test inoculum viability and efficacy under controlled conditions. Implementation of these measurements would contribute to the adoption of AM inoculants by producers with the potential to increase sustainability in food production systems.
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Affiliation(s)
- Matthias J. Salomon
- The Waite Research Institute and The School of Agriculture, Food and Wine, The University of Adelaide, Waite Campus, PMB1 Glen Osmond, SA 5064, Australia
| | - Stephanie J. Watts-Williams
- The Waite Research Institute and The School of Agriculture, Food and Wine, The University of Adelaide, Waite Campus, PMB1 Glen Osmond, SA 5064, Australia
| | - Michael J. McLaughlin
- The Waite Research Institute and The School of Agriculture, Food and Wine, The University of Adelaide, Waite Campus, PMB1 Glen Osmond, SA 5064, Australia
| | - Heike Bücking
- University of Missouri, Division of Plant Sciences, Columbia, MO 65211, USA
| | - Brajesh K. Singh
- Global Centre for Land-Based Innovation, Hawkesbury Institute for the Environment, Western Sydney University, Penrith, SA 2747, Australia
| | | | | | - Francis M. Martin
- Université de Lorraine, INRAE, UMR Interactions Arbres/Microorganismes, Centre INRAE Grand Est-Nancy, Champenoux, France
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, 100083 Beijing, China
| | - Miroslav Vosatka
- The Institute of Botany, Czech Academy of Sciences, Zamek 1, 25243 Pruhonice, Czech Republic
| | - Liangdong Guo
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, No. 3 1st Beichen West Rd., Chaoyang District, Beijing 100101, China
| | - Tatsuhiro Ezawa
- Graduate School of Agriculture, Hokkaido University, Sapporo, Hokkaido 060-8589, Japan
| | | | - Stéphane Declerck
- Laboratory of Mycology, Earth and Life Institute, Université catholique de Louvain, Croix du Sud 3, 1348 Louvain-la-Neuve, Belgium
| | - Yong-Guan Zhu
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 1799 Jimei Road, Xiamen 361021, China
- University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Timothy Bowles
- Department of Environmental Science, Policy and Management, University of California Berkeley, Berkeley, CA 94720, USA
| | - Lynette K. Abbott
- UWA School of Agriculture and Environment and UWA Institute of Agriculture, The University of Western Australia, Perth, WA, Australia
| | - F. Andrew Smith
- The Waite Research Institute and The School of Agriculture, Food and Wine, The University of Adelaide, Waite Campus, PMB1 Glen Osmond, SA 5064, Australia
| | - Timothy R. Cavagnaro
- The Waite Research Institute and The School of Agriculture, Food and Wine, The University of Adelaide, Waite Campus, PMB1 Glen Osmond, SA 5064, Australia
| | - Marcel G.A. van der Heijden
- Plant-Soil-Interaction Group, Institute for Sustainability Science, Agroscope, Zürich, 8046 Switzerland
- Department of Plant and Microbial Biology, University of Zurich, Zürich 8008, Switzerland
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43
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Najafi Vafa Z, Sohrabi Y, Mirzaghaderi G, Heidari G. Soil Microorganisms and Seaweed Application With Supplementary Irrigation Improved Physiological Traits and Yield of Two Dryland Wheat Cultivars. FRONTIERS IN PLANT SCIENCE 2022; 13:855090. [PMID: 35720598 PMCID: PMC9198557 DOI: 10.3389/fpls.2022.855090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 04/04/2022] [Indexed: 06/15/2023]
Abstract
To evaluate the effect of useful soil microorganisms and organic compounds on physiological characteristics and yield of two wheat cultivars under supplementary irrigation conditions, a study was conducted in the Agriculture Research Farm of Kurdistan University during the two cropping seasons of 2017-2018 and 2018-2019. A split-split plot-based study on a randomized complete block design with four replicates was used as an experimental design. The main factor was irrigation at three levels, including control without irrigation, supplementary irrigation in the booting stage, and supplementary irrigation in the booting and flowering stages. Two wheat cultivars, namely, Sardari and Sirvan, as sub-factors and application of bio-fertilizers in eight levels, including the use of bio-fertilizers containing: Mycorrhiza, Seaweed extract, Nitrozist and Phosphozist, Mycorrhiza + Nitrozist and Phosphozist, Seaweed extract + Nitrozist and Phosphozist, Mycorrhiza + Seaweed extract, Mycorrhiza + Nitrozist and Phosphozist + Seaweed extract, and non-application of bio-fertilizers, were considered as sub-factors. The results of both seasons of the experiment showed that the application of bio-fertilizers compared to the control treatment at all irrigation levels increased root volume, leaf relative water content (RWC), membrane stability index (MSI), and photosynthetic pigment content. The highest amount of H2O2, proline, and soluble carbohydrates were obtained in wheat under dry land conditions, and supplementary irrigation, especially two-time irrigation, significantly reduced the values of these traits. Supplementary irrigation also increased grain yield, so that in the conditions of two-time irrigation compared to the non-irrigation treatment (dry land), in the first and second seasons, the grain yield increased by 79.51 and 78.69%, respectively. Application of bio-fertilizers (Mycorrhiza + Nitrozist and Phosphozist + Seaweed extract) in comparison with the non-application of these fertilizers, due to increased root volume, RWC, MSI, and content of photosynthetic pigments, increased the grain yield in the first and second seasons of the experiment by 8.04 and 6.96%, respectively. As a result, suitable microorganisms and seaweed can improve wheat resistance mechanisms to water deficit, which along with using supplementary irrigation that saves water consumption improves plant growth and yield in areas faced with water shortage.
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Affiliation(s)
| | - Yousef Sohrabi
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Kurdistan, Sanandaj, Iran
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44
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Zhang W, Yu L, Han B, Liu K, Shao X. Mycorrhizal Inoculation Enhances Nutrient Absorption and Induces Insect-Resistant Defense of Elymus nutans. FRONTIERS IN PLANT SCIENCE 2022; 13:898969. [PMID: 35712553 PMCID: PMC9194685 DOI: 10.3389/fpls.2022.898969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 05/10/2022] [Indexed: 05/26/2023]
Abstract
The majority of terrestrial plants can form symbiotic associations on their roots with arbuscular mycorrhizal fungi (AMF) in the soil to stimulate the growth and nutrient uptake of the host plant and to improve plant resistance to insects and disease. However, the use of AMF for insect control on gramineous forages requires further study. Here, we evaluated the effects of AMF (Funneliformis mosseae) inoculation on the defense against Locusta migratoria attack in Elymus nutans. Inoculation assays showed that mycorrhizal plants had a higher resistance than non-inoculated plants, as evidenced by plants having more plant biomass, a higher nitrogen and phosphorus content, and greater lipoxygenase (LOX) activity. The results of insect damage showed that in addition to a decrease in the enzyme phenylalanine-ammonia-lyase, the activities of other plant defense-related enzymes (including polyphenol oxidase and β-1,3-glucanase) were increased. A key enzyme, LOX, belonging to the jasmonic acid (JA) signaling pathway was notably increased in mycorrhizal treatment. Volatile organic compounds (VOCs) were identified using gas chromatography mass spectrometry and the results showed that several metabolites with insect-resistant properties, including D-Limonene, p-Xylene, 1,3-Diethylbenzene were detected in mycorrhizal plants. These findings suggest that mycorrhizal inoculation has potential applications in insect management on forage grasses and demonstrates that the JA signaling pathway is essential for insect resistance in Elymus nutans.
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45
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YILMAZ A, YILMAZ H, SOYDEMİR HE, ÇİFTÇİ V. Soya (Glycine max L.)’da PGPR ve AMF Uygulamalarının Verim Özellikleri ve Protein İçeriğine Etkisi. ULUSLARARASI TARIM VE YABAN HAYATI BILIMLERI DERGISI 2022. [DOI: 10.24180/ijaws.1077704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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46
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Thangaraj K, Li J, Mei H, Hu S, Han R, Zhao Z, Chen X, Li X, Kamatchi Reddiar D. Mycorrhizal Colonization Enhanced Sorghum bicolor Tolerance under Soil Water Deficit Conditions by Coordination of Proline and Reduced Glutathione (GSH). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:4243-4255. [PMID: 35377636 DOI: 10.1021/acs.jafc.1c07184] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Drought stress is an important limiting factor in crop production. Arbuscular mycorrhizal fungi (AMF) enhance plant drought tolerance through antioxidant activities. However, the coordination of nonenzymatic antioxidants against drought remains unclear. Here, we investigated the AMF symbiosis in drought tolerance of Sorghum bicolor by increasing proline and reducing glutathione (GSH). Glomus mosseae inoculation increased grain yield, biochemical content, and bioactivities of millets. Under drought conditions, seedlings inoculated with G. mosseae had higher SOD, POD, CAT, PPO, proline, and GSH activities compared to noninoculated controls. Meanwhile, a lower accumulation of MDA and H2O2 was observed in the G. mosseae seedlings. Furthermore, genes attributed to nonenzymatic antioxidants, such as GST29, P5CS2, FD3, GST, and GAD, were significantly up-regulated by G. mosseae under drought conditions. In conclusion, G. mosseae inoculation enhanced the drought tolerance of S. bicolor by improving reactive oxygen species (ROS) scavengers, including proline and GSH, that regulate ROS production and prevent oxidative damage.
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Affiliation(s)
- Kuberan Thangaraj
- Tea Research Institute, Nanjing Agricultural University, Nanjing 210095, China
| | - Jianjie Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Huiling Mei
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Shunkai Hu
- Tea Research Institute, Nanjing Agricultural University, Nanjing 210095, China
| | - Rui Han
- Tea Research Institute, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhen Zhao
- Tea Research Institute, Nanjing Agricultural University, Nanjing 210095, China
| | - Xuan Chen
- Tea Research Institute, Nanjing Agricultural University, Nanjing 210095, China
| | - Xinghui Li
- Tea Research Institute, Nanjing Agricultural University, Nanjing 210095, China
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47
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Saia S, Jansa J. Editorial: Arbuscular Mycorrhizal Fungi: The Bridge Between Plants, Soils, and Humans. FRONTIERS IN PLANT SCIENCE 2022; 13:875958. [PMID: 35444670 PMCID: PMC9014169 DOI: 10.3389/fpls.2022.875958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 03/14/2022] [Indexed: 06/14/2023]
Affiliation(s)
- Sergio Saia
- Department of Veterinary Science, University of Pisa, Pisa, Italy
| | - Jan Jansa
- Czech Academy of Sciences, Institute of Microbiology, Prague, Czechia
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48
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Gardner CM, Gerhard WA, Redfern LK, Gunsch CK. Evaluation of developing maize microbiomes and associations among nitrogen cyclers and key fungal taxa. MICROBIOLOGY (READING, ENGLAND) 2022; 168. [PMID: 35319433 DOI: 10.1099/mic.0.001155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
More sustainable approaches to agriculture are urgently needed to protect existing resources and optimize crop yields and to provide food for a growing global human population. More sustainable agricultural practices that utilize plant-microbe relationships across cultivation are urgently needed. The main objectives of this study were to track the prokaryotic and fungal microbiomes associated with key growth stages of developing maize to evaluate the relationships among nitrogen cycling bacteria and major fungal genera including those known to contain arbuscular mycorrhizal fungi and other important taxa. Prokaryotic and fungal microbiomes associated with bulk soils, rhizosphere soils and tissues of developing maize were characterized using Illumina MiSeq sequencing. Similarities in microbiome diversity and abundance were compared to sample metadata to explore the influence of external factors on microbiome development. Correlations among target fungal taxa, bulk bacteria and nitrogen cycling bacteria were determined using non-parametric Spearman correlations. Important maize-associated fungal taxa were detected in all samples across growth stages, with Fusarium, Penicillium and Aspergillus fungi comprising up to 4.21, 4.26 and 0.28% of all fungal genera, respectively. Thirteen statistically significant correlations between nitrogen cycling genera and targeted fungal genera were also identified (r S≥0.70 or r S≤-0.70; P<0.05). This study is the first to note a strong positive association among several nitrifying bacteria and Fusarium (R=0.71; P=0.0046), Aspergillus (R=0.71; P=0.0055) and Cladosporium spcies (R=0.74; P=0.0038), suggesting the levels of soil nitrate, nitrite or nitrification intermediates may have large roles in the proliferation of important maize-associated fungi.
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Affiliation(s)
- Courtney M Gardner
- Duke University, Civil and Environmental Engineering, Durham, NC 27708, USA.,Present address: Washington State University, Civil and Environmental Engineering, 405 Spokane St., PO Box 642910, Pullman, WA 99164, USA
| | - William A Gerhard
- Duke University, Civil and Environmental Engineering, Durham, NC 27708, USA
| | - Lauren K Redfern
- Duke University, Civil and Environmental Engineering, Durham, NC 27708, USA.,Present address: Florida Gulf Coast University, Environmental and Civil Engineering, 10501 FGCU Blvd. South, Ft. Myers, FL 33965, USA
| | - Claudia K Gunsch
- Duke University, Civil and Environmental Engineering, Durham, NC 27708, USA.,Present address: Duke University, Durham, NC 27708, USA
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49
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Pellegrino E, Nuti M, Ercoli L. Multiple Arbuscular Mycorrhizal Fungal Consortia Enhance Yield and Fatty Acids of Medicago sativa: A Two-Year Field Study on Agronomic Traits and Tracing of Fungal Persistence. FRONTIERS IN PLANT SCIENCE 2022; 13:814401. [PMID: 35237288 PMCID: PMC8882620 DOI: 10.3389/fpls.2022.814401] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 01/12/2022] [Indexed: 06/14/2023]
Abstract
Arbuscular mycorrhizal fungi are promoted as biofertilizers due to potential benefits in crop productivity, and macro- and microelement uptake. However, crop response to arbuscular mycorrhizal fungi (AMF) inoculation is context-dependent, and AMF diversity and field establishment and persistence of inoculants can greatly contribute to variation in outcomes. This study was designed to test the hypotheses that multiple and local AMF inoculants could enhance alfalfa yield and fatty acids (FA) compared to exotic isolates either single or in the mixture. We aimed also to verify the persistence of inoculated AMF, and which component of the AMF communities was the major driver of plant traits. Therefore, a field experiment of AMF inoculation of alfalfa (Medicago sativa L.) with three single foreign isolates, a mixture of the foreign isolates (FMix), and a highly diverse mixture of local AMF (LMix) was set up. We showed that AMF improved alfalfa yield (+ 68%), nutrient (+ 147% N content and + 182% P content in forage), and FA content (+ 105%). These positive effects persisted for at least 2 years post-inoculation and were associated with enhanced AMF abundance in roots. Consortia of AMF strains acted in synergy, and the mixture of foreign AMF isolates provided greater benefits compared to local consortia (+ 20% forage yield, + 36% forage N content, + 18% forage P content, + 20% total FA in forage). Foreign strains of Funneliformis mosseae and Rhizophagus irregularis persisted in the roots of alfalfa 2 years following inoculation, either as single inoculum or as a component of the mixture. Among inoculants, F. mosseae BEG12 and AZ225C and the FMix exerted a higher impact on the local AMF community compared with LMix and R. irregularis BEG141. Finally, the stimulation of the proliferation of a single-taxa (R. irregularis cluster1) induced by all inoculants was the main determinant of the host benefits. Crop productivity and quality as well as field persistence of inoculated AMF support the use of mixtures of foreign AMF. On the other hand, local mixtures showed a lower impact on native AMF. These results pave the way for extending the study on the effect of AMF mixtures for the production of high-quality forage for the animal diet.
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Affiliation(s)
- Elisa Pellegrino
- Institute of Life Sciences, Scuola Superiore Sant’Anna, Pisa, Italy
| | - Marco Nuti
- Institute of Life Sciences, Scuola Superiore Sant’Anna, Pisa, Italy
- University of Pisa, Pisa, Italy
| | - Laura Ercoli
- Institute of Life Sciences, Scuola Superiore Sant’Anna, Pisa, Italy
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50
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Thirkell TJ, Grimmer M, James L, Pastok D, Allary T, Elliott A, Paveley N, Daniell T, Field KJ. Variation in mycorrhizal growth response among a spring wheat mapping population shows potential to breed for symbiotic benefit. Food Energy Secur 2022; 11:e370. [PMID: 35865673 PMCID: PMC9286679 DOI: 10.1002/fes3.370] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 11/09/2021] [Accepted: 12/15/2021] [Indexed: 12/12/2022] Open
Affiliation(s)
- Tom J. Thirkell
- Plants, Photosynthesis and Soil School of Biosciences University of Sheffield Sheffield UK
| | | | | | - Daria Pastok
- School of Biology Centre for Plant Sciences University of Leeds Leeds UK
| | - Théa Allary
- Plants, Photosynthesis and Soil School of Biosciences University of Sheffield Sheffield UK
| | - Ashleigh Elliott
- School of Biology Centre for Plant Sciences University of Leeds Leeds UK
| | | | - Tim Daniell
- Plants, Photosynthesis and Soil School of Biosciences University of Sheffield Sheffield UK
| | - Katie J. Field
- Plants, Photosynthesis and Soil School of Biosciences University of Sheffield Sheffield UK
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