1
|
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.
Collapse
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
| |
Collapse
|
2
|
Corazon-Guivin MA, Romero-Cachique G, Del Aguila KM, Padilla-Domínguez A, Hernández-Amasifuen AD, Cerna-Mendoza A, Coyne D, Oehl F. Rhizoglomus variabile and Nanoglomus plukenetiae, Native to Peru, Promote Coffee Growth in Western Amazonia. Microorganisms 2023; 11:2883. [PMID: 38138027 PMCID: PMC10745942 DOI: 10.3390/microorganisms11122883] [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: 10/19/2023] [Revised: 11/20/2023] [Accepted: 11/27/2023] [Indexed: 12/24/2023] Open
Abstract
Coffee (Coffea arabica) is among the world's most economically important crops. Coffee was shown to be highly dependent on arbuscular mycorrhizal fungi (AMF) in traditionally managed coffee plantations in the tropics. The objective of this study was to assess AMF species richness in coffee plantations of four provinces in Perú, to isolate AMF isolates native to these provinces, and to test the effects of selected indigenous AMF strains on coffee growth. AMF species were identified by morphological tools on the genus level, and if possible further to the species level. Two native species, Rhizoglomus variabile and Nanoglomus plukenetiae, recently described from the Peruvian mountain ranges, were successfully cultured in the greenhouse on host plants. In two independent experiments, both species were assessed for their ability to colonize coffee seedlings and improve coffee growth over 135 days. A total of 35 AMF morphospecies were identified from 12 plantations. The two inoculated species effectively colonized coffee roots, which resulted in 3.0-8.6 times higher shoot, root and total biomass, when compared to the non-mycorrhizal controls. R. variabile was superior to N. plukenetiae in all measured parameters, increasing shoot, root, and total biomass dry weight by 4.7, 8.6 and 5.5 times, respectively. The dual inoculation of both species, however, did not further improve plant growth, when compared to single-species inoculations. The colonization of coffee by either R. variabile or N. plukenetiae strongly enhances coffee plant growth. R. variabile, in particular, offers enormous potential for improving coffee establishment and productivity. Assessment of further AMF species, including species from other AMF families should be considered for optimization of coffee growth promotion, both alone and in combination with R. variabile.
Collapse
Affiliation(s)
- Mike Anderson Corazon-Guivin
- Laboratorio de Biología y Genética Molecular, Universidad Nacional de San Martín, Jr. Amorarca N° 315, Morales 22201, Peru; (G.R.-C.); (K.M.D.A.); (A.P.-D.); (A.D.H.-A.); (A.C.-M.)
| | - Gabriel Romero-Cachique
- Laboratorio de Biología y Genética Molecular, Universidad Nacional de San Martín, Jr. Amorarca N° 315, Morales 22201, Peru; (G.R.-C.); (K.M.D.A.); (A.P.-D.); (A.D.H.-A.); (A.C.-M.)
| | - Karen M. Del Aguila
- Laboratorio de Biología y Genética Molecular, Universidad Nacional de San Martín, Jr. Amorarca N° 315, Morales 22201, Peru; (G.R.-C.); (K.M.D.A.); (A.P.-D.); (A.D.H.-A.); (A.C.-M.)
| | - Amner Padilla-Domínguez
- Laboratorio de Biología y Genética Molecular, Universidad Nacional de San Martín, Jr. Amorarca N° 315, Morales 22201, Peru; (G.R.-C.); (K.M.D.A.); (A.P.-D.); (A.D.H.-A.); (A.C.-M.)
| | - Angel David Hernández-Amasifuen
- Laboratorio de Biología y Genética Molecular, Universidad Nacional de San Martín, Jr. Amorarca N° 315, Morales 22201, Peru; (G.R.-C.); (K.M.D.A.); (A.P.-D.); (A.D.H.-A.); (A.C.-M.)
| | - Agustin Cerna-Mendoza
- Laboratorio de Biología y Genética Molecular, Universidad Nacional de San Martín, Jr. Amorarca N° 315, Morales 22201, Peru; (G.R.-C.); (K.M.D.A.); (A.P.-D.); (A.D.H.-A.); (A.C.-M.)
| | - Danny Coyne
- International Institute of Tropical Agriculture (IITA), Headquarters PMB 5320, Oyo Road, Ibadan 200001, Oyo State, Nigeria;
| | - Fritz Oehl
- Agroscope, Competence Division for Plants and Plant Products, Plant Protection Products—Impact and Assessment, Applied Ecotoxicology, Müller-Thurgau-Strasse 29, 8820 Wädenswil, Switzerland
| |
Collapse
|
3
|
Corona Ramírez A, Symanczik S, Gallusser T, Bodenhausen N. Quantification of arbuscular mycorrhizal fungi root colonization in wheat, tomato, and leek using absolute qPCR. MYCORRHIZA 2023; 33:387-397. [PMID: 37646822 PMCID: PMC10752845 DOI: 10.1007/s00572-023-01122-8] [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: 04/12/2023] [Accepted: 07/13/2023] [Indexed: 09/01/2023]
Abstract
Arbuscular mycorrhizal fungi (AMF) form symbioses with most terrestrial plants and are known to have a positive effect on plant growth and health. Different methodologies have been developed to assess the AMF-plant symbiosis. The most applied method, which involves staining of roots and microscopic observation of the AMF structures, is tedious and time-consuming and the results are highly dependent on the observer. Using quantitative polymerase chain reaction (qPCR) to quantify AMF root colonization represents a reliable, high-throughput technique that allows the assessment of numerous samples. Quantification with qPCR can be performed through two methods: relative quantification and absolute quantification. In relative quantification, the target gene is normalized with a reference gene. On the other hand, absolute quantification involves the use of a standard curve, for which template DNA is serially diluted. In a previous paper, we validated the primer pair AMG1F and AM1 for a relative quantification approach to assess AMF root colonization in Petunia. Here, we tested the same primers with an absolute quantification approach and compared the results with the traditional microscopy method. We evaluated the qPCR method with three different crops, namely, wheat (cv. Colmetta and Wiwa), tomato, and leek. We observed a strong correlation between microscopy and qPCR for Colmetta (r = 0.90, p < 0.001), Wiwa (r = 0.94, p < 0.001), and tomato (r = 0.93, p < 0.001), but no correlation for leek (r = 0.27, p = 0.268). This highlights the importance of testing the primer pair for each specific crop.
Collapse
Affiliation(s)
- Andrea Corona Ramírez
- Department of Soil Sciences, Research Institute of Organic Agriculture FiBL, Frick, Switzerland
| | - Sarah Symanczik
- Department of Soil Sciences, Research Institute of Organic Agriculture FiBL, Frick, Switzerland
| | - Tabea Gallusser
- Department of Soil Sciences, Research Institute of Organic Agriculture FiBL, Frick, Switzerland
| | - Natacha Bodenhausen
- Department of Soil Sciences, Research Institute of Organic Agriculture FiBL, Frick, Switzerland.
| |
Collapse
|
4
|
Tosi M, Ogilvie CM, Spagnoletti FN, Fournier S, Martin RC, Dunfield KE. Cover Crops Modulate the Response of Arbuscular Mycorrhizal Fungi to Water Supply: A Field Study in Corn. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12051015. [PMID: 36903877 PMCID: PMC10005079 DOI: 10.3390/plants12051015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/14/2023] [Accepted: 02/15/2023] [Indexed: 05/14/2023]
Abstract
Cover crops (CCs) were found to improve soil health by increasing plant diversity and ground cover. They may also improve water supply for cash crops by reducing evaporation and increasing soil water storage capacity. However, their influence on plant-associated microbial communities, including symbiotic arbuscular mycorrhizal fungi (AMF), is less well understood. In a corn field trial, we studied the response of AMF to a four-species winter CC, relative to a no-CC control, as well as to two contrasting water supply levels (i.e., drought and irrigated). We measured AMF colonization of corn roots and used Illumina MiSeq sequencing to study the composition and diversity of soil AMF communities at two depths (i.e., 0-10 and 10-20 cm). In this trial, AMF colonization was high (61-97%), and soil AMF communities were represented by 249 amplicon sequence variants (ASVs) belonging to 5 genera and 33 virtual taxa. Glomus, followed by Claroideoglomus and Diversispora (class Glomeromycetes), were the dominant genera. Our results showed interacting effects between CC treatments and water supply levels for most of the measured variables. The percentage of AMF colonization, arbuscules, and vesicles tended to be lower in irrigated than drought sites, with significant differences detected only under no-CC. Similarly, soil AMF phylogenetic composition was affected by water supply only in the no-CC treatment. Changes in the abundance of individual virtual taxa also showed strong interacting effects between CCs, irrigation, and sometimes soil depth, although CC effects were clearer than irrigation effects. An exception to these interactions was soil AMF evenness, which was higher in CC than no-CC, and higher under drought than irrigation. Soil AMF richness was not affected by the applied treatments. Our results suggest that CCs can affect the structure of soil AMF communities and modulate their response to water availability levels, although soil heterogeneity could influence the final outcome.
Collapse
Affiliation(s)
- Micaela Tosi
- School of Environmental Sciences, University of Guelph, 50 Stone Rd. E, Guelph, ON N1G 2W1, Canada
| | - Cameron M. Ogilvie
- Department of Plant Agriculture, University of Guelph, 50 Stone Rd. E, Guelph, ON N1G 2W1, Canada
| | - Federico N. Spagnoletti
- Instituto de Investigaciones en Biociencias Agrícolas y Ambientales (INBA), Consejo Nacional de Investigaciones Científicas (CONICET), Avda. San Martín 4453, Buenos Aires C1417DSE, Argentina
- Cátedra de Microbiología, Facultad de Agronomía, Universidad de Buenos Aires, Avda. San Martín 4453, Buenos Aires C1417DSE, Argentina
| | - Sarah Fournier
- School of Environmental Sciences, University of Guelph, 50 Stone Rd. E, Guelph, ON N1G 2W1, Canada
| | - Ralph C. Martin
- Department of Plant Agriculture, University of Guelph, 50 Stone Rd. E, Guelph, ON N1G 2W1, Canada
| | - Kari E. Dunfield
- School of Environmental Sciences, University of Guelph, 50 Stone Rd. E, Guelph, ON N1G 2W1, Canada
- Correspondence:
| |
Collapse
|
5
|
Yan P, Hou H, Lv Y, Zhang H, Li J, Shao L, Xie Q, Liang Y, Li J, Ni X. Diversity characteristics of arbuscular mycorrhizal fungi communities in the soil along successional altitudes of Helan Mountain, arid, and semi-arid regions of China. Front Microbiol 2023; 14:1099131. [PMID: 36937292 PMCID: PMC10017989 DOI: 10.3389/fmicb.2023.1099131] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 02/16/2023] [Indexed: 03/06/2023] Open
Abstract
Introduction Arbuscular mycorrhizal fungi (AMF) perform a vital role in terrestrial ecosystems. Methods To investigate the diversity of AMF communities on the western slope of Helan Mountain at different altitudes and their influence factors, high-throughput sequencing was used to study the structure and diversity of soil AMF communities under different environments and their interrelationships between AMF and environmental factors. Results The results revealed that there were significant differences (p < 0.05) in the physical and chemical properties of the soil along the different altitudes. A total of 1,145 OTUs were obtained by high-throughput sequencing, belonging to 1 phylum, 4 class, 6 orders, 13 families, 18 genera and 135 species, with the dominant genus being Glomus, which accounted for 75.27% of the relative abundance of the community. Soil AMF community structure was shown to be variable at the generic level according to NMDS analysis. Correlation analysis showed that soil pH, water content (WC), organic matter (OM), available K, available P and N were significantly correlated with AMF community diversity and species abundance (p < 0.05, p < 0.01). Based on redundancy analysis (RDA) and Monte Carlo test results, soil pH, WC and OM had highly significant effects (p < 0.01) on AMF community diversity and species abundance. Discussion This study investigates the relationship between AMF community structure and diversity and soil physicochemical properties at different elevations on the western slope of Helan Mountain, which is of great significance to the study of the Helan Mountain ecosystem.
Collapse
Affiliation(s)
- Peixuan Yan
- College of Agriculture, Ningxia University, Yinchuan, China
| | - Hui Hou
- Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, School of Ecological and Environment, Ningxia University, Yinchuan, China
- Key Laboratory of Restoration and Reconstruction of Degraded Ecosystems in Northwestern China of Ministry of Education, Ningxia University, Yinchuan, China
| | - Yingze Lv
- College of Agriculture, Ningxia University, Yinchuan, China
| | - Haiying Zhang
- Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, School of Ecological and Environment, Ningxia University, Yinchuan, China
- Key Laboratory of Restoration and Reconstruction of Degraded Ecosystems in Northwestern China of Ministry of Education, Ningxia University, Yinchuan, China
| | - Jia Li
- College of Agriculture, Ningxia University, Yinchuan, China
| | - Leilei Shao
- Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, School of Ecological and Environment, Ningxia University, Yinchuan, China
- Key Laboratory of Restoration and Reconstruction of Degraded Ecosystems in Northwestern China of Ministry of Education, Ningxia University, Yinchuan, China
| | - Qinmi Xie
- Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, School of Ecological and Environment, Ningxia University, Yinchuan, China
- Key Laboratory of Restoration and Reconstruction of Degraded Ecosystems in Northwestern China of Ministry of Education, Ningxia University, Yinchuan, China
| | - Yongliang Liang
- Ningxia Helan Mountain Forest Ecosystem Orientation Observation Research Station, Yinchuan, China
| | - Jingyao Li
- Ningxia Helan Mountain Forest Ecosystem Orientation Observation Research Station, Yinchuan, China
| | - Xilu Ni
- Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, School of Ecological and Environment, Ningxia University, Yinchuan, China
- Key Laboratory of Restoration and Reconstruction of Degraded Ecosystems in Northwestern China of Ministry of Education, Ningxia University, Yinchuan, China
- Ningxia Helan Mountain Forest Ecosystem Orientation Observation Research Station, Yinchuan, China
- *Correspondence: Xilu Ni,
| |
Collapse
|
6
|
Wang K, Bi Y, Zhang J, Ma S. AMF Inoculum Enhances Crop Yields of Zea mays L. 'Chenghai No. 618' and Glycine max L. 'Zhonghuang No. 17' without Disturbing Native Fugal Communities in Coal Mine Dump. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:17058. [PMID: 36554943 PMCID: PMC9779662 DOI: 10.3390/ijerph192417058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/23/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
For the agricultural development of dumps, increase in land use efficiency and protection of food security, to verify the safety, efficacy and sustainability of field-applied arbuscular mycorrhizal fungi (AMF) inoculum, and to exclude the risk of potential biological invasion, in this study, we determined the effect of AMF inoculation and intercropping patterns (maize-soybean) on the temporal dynamics of soil parameters, native AMF communities and crop yields. AMF communities were analyzed using Illumina MiSeq. A total of 448 AMF operational taxonomic units (OTUs) belonging to six genera and nine families were identified. AMF inoculation treatment significantly improved the yield of intercropping maize and increased the content of available phosphorus. AMF diversity was significantly influenced by cropping pattern and growth stage, but not by the inoculation treatment. Inoculation altered the AMF community composition in the early growth stage and facilitated a more complex AMF network in the early and late growth stages. These results indicate that AMF inoculation affects native AMF only in the early stage, and its impact on yield may be the consequence of cumulative effects due to the advantages of plant growth and nutrient uptake in the early stage.
Collapse
Affiliation(s)
- Kun Wang
- State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (Beijing), Beijing 100083, China
| | - Yinli Bi
- State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (Beijing), Beijing 100083, China
- Institute of Ecological Environment Restoration in Mine Areas of West China, Xi’an University of Science and Technology, Xi’an 710054, China
| | - Jiayu Zhang
- State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (Beijing), Beijing 100083, China
| | - Shaopeng Ma
- State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (Beijing), Beijing 100083, China
| |
Collapse
|
7
|
The Potential Applications of Commercial Arbuscular Mycorrhizal Fungal Inoculants and Their Ecological Consequences. Microorganisms 2022; 10:microorganisms10101897. [PMID: 36296173 PMCID: PMC9609176 DOI: 10.3390/microorganisms10101897] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/17/2022] [Accepted: 09/19/2022] [Indexed: 11/18/2022] Open
Abstract
Arbuscular mycorrhizal fungal (AMF) inoculants are sustainable biological materials that can provide several benefits to plants, especially in disturbed agroecosystems and in the context of phytomanagement interventions. However, it is difficult to predict the effectiveness of AMF inoculants and their impacts on indigenous AMF communities under field conditions. In this review, we examined the literature on the possible outcomes following the introduction of AMF-based inoculants in the field, including their establishment in soil and plant roots, persistence, and effects on the indigenous AMF community. Most studies indicate that introduced AMF can persist in the target field from a few months to several years but with declining abundance (60%) or complete exclusion (30%). Further analysis shows that AMF inoculation exerts both positive and negative impacts on native AMF species, including suppression (33%), stimulation (38%), exclusion (19%), and neutral impacts (10% of examined cases). The factors influencing the ecological fates of AMF inoculants, such as the inherent properties of the inoculum, dosage and frequency of inoculation, and soil physical and biological factors, are further discussed. While it is important to monitor the success and downstream impacts of commercial inoculants in the field, the sampling method and the molecular tools employed to resolve and quantify AMF taxa need to be improved and standardized to eliminate bias towards certain AMF strains and reduce discrepancies among studies. Lastly, inoculant producers must focus on selecting strains with a higher chance of success in the field, and having little or negligible downstream impacts.
Collapse
|
8
|
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.
Collapse
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
| |
Collapse
|
9
|
Fu W, Chen B, Rillig MC, Jansa J, Ma W, Xu C, Luo W, Wu H, Hao Z, Wu H, Zhao A, Yu Q, Han X. Community response of arbuscular mycorrhizal fungi to extreme drought in a cold-temperate grassland. THE NEW PHYTOLOGIST 2022; 234:2003-2017. [PMID: 34449895 DOI: 10.1111/nph.17692] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 08/20/2021] [Indexed: 06/13/2023]
Abstract
Climate extremes pose enormous threats to natural ecosystems. Arbuscular mycorrhizal (AM) fungi are key plant symbionts that can affect plant community dynamics and ecosystem stability. However, knowledge about how AM fungal communities respond to climate extremes in natural ecosystems remains elusive. Based on a grassland extreme drought experiment in Inner Mongolia, we investigated the response of AM fungal communities to extreme drought in association with plant communities. The experiment simulated two types of extreme drought (chronic/intense) of once-in-20-year occurrence. AM fungal richness and community composition exhibited high sensitivity to extreme drought and were more sensitive to intense drought than chronic drought. This community sensitivity (i.e. decline in richness and shifts in community composition) of AM fungi can be jointly explained by soil moisture, plant richness, and aboveground productivity. Notably, the robustness of the plant-AM fungal community co-response increased with drought intensity. Our results indicate that AM fungal communities are sensitive to climate extremes, and we propose that the plant community mediates AM fungal community responses. Given the ubiquitous nature of AM associations, their climate sensitivity may have profound consequences on plant communities and ecosystem stability under climate change.
Collapse
Affiliation(s)
- Wei Fu
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Baodong Chen
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Matthias C Rillig
- Institute of Biology, Freie Universität Berlin, Berlin, 14195, Germany
- Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Berlin, 14195, Germany
| | - Jan Jansa
- Laboratory of Fungal Biology, Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, Prague 4, 14220, Czech Republic
| | - Wang Ma
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Erguna Forest-Steppe Ecotone Research Station, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110164, China
| | - Chong Xu
- Ministry of Agriculture Key Laboratory of Crop Nutrition and Fertilization, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
- State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730020, China
| | - Wentao Luo
- Erguna Forest-Steppe Ecotone Research Station, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110164, China
| | - Honghui Wu
- Ministry of Agriculture Key Laboratory of Crop Nutrition and Fertilization, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Zhipeng Hao
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Hui Wu
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Aihua Zhao
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qiang Yu
- National Hulunber Grassland Ecosystem Observation and Research Station, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 10008, China
| | - Xingguo Han
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Erguna Forest-Steppe Ecotone Research Station, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110164, China
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| |
Collapse
|
10
|
Aspects, problems and utilization of Arbuscular Mycorrhizal (AM) Application as Bio-fertilizer in sustainable Agriculture. CURRENT RESEARCH IN MICROBIAL SCIENCES 2022; 3:100107. [PMID: 35169758 PMCID: PMC8829076 DOI: 10.1016/j.crmicr.2022.100107] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 10/11/2021] [Accepted: 01/21/2022] [Indexed: 11/23/2022] Open
|
11
|
Guo X, Wang P, Wang X, Li Y, Ji B. Specific Plant Mycorrhizal Responses Are Linked to Mycorrhizal Fungal Species Interactions. FRONTIERS IN PLANT SCIENCE 2022; 13:930069. [PMID: 35755699 PMCID: PMC9226604 DOI: 10.3389/fpls.2022.930069] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 05/11/2022] [Indexed: 05/21/2023]
Abstract
Effects of arbuscular mycorrhizal fungi (AMF) on plants span the continuum from mutualism to parasitism due to the plant-AMF specificity, which obscures the utilization of AMF in the restoration of degraded lands. Caragana korshinskii, Hedysarum laeve, Caragana microphylla, and Poa annua are the most frequently used plants for revegetation in Kubuqi Desert, China, and the influence of AMF on their re-establishment remains to be explored further. Herein, using a greenhouse experiment, we tested the plant-AMF feedbacks between the four plant species and their conspecific or heterospecific AMF, retrieved from their rhizosphere in the Kubuqi Desert. AMF showed beneficial effects on plant growth for all these plant-AMF pairs. Generally, AMF increased the biomass of C. korshinskii, H. laeve, C. microphylla, and P. annua by 97.6, 50.6, 46.5, and 381.1%, respectively, relative to control. In addition, the AMF-plant specificity was detected. P. annua grew best, but C. microphylla grew worst with conspecific AMF communities. AMF community from P. annua showed the largest beneficial effect on all the plants (with biomass increased by 63.9-734.4%), while the AMF community from C. microphylla showed the least beneficial effect on all the plants (with biomass increased by 9.9-59.1%), except for P. annua (a 292.4% increase in biomass). The magnitude of AMF effects on plant growth was negatively correlated with the complexity of the corresponding AMF co-occurrence networks. Overall, this study suggests that AMF effects on plant growth vary due to plant-AMF specificity. We also observed the broad-spectrum benefits of the native AMF from P. annua, which indicates its potential utilization in the restoration of the desert vegetation.
Collapse
Affiliation(s)
- Xin Guo
- School of Grassland Science, Beijing Forestry University, Beijing, China
| | - Ping Wang
- Command Center for Integrated Natural Resource Survey, China Geological Survey, Beijing, China
| | - Xinjie Wang
- College of Forestry, Beijing Forestry University, Beijing, China
- *Correspondence: Xinjie Wang,
| | - Yaoming Li
- School of Grassland Science, Beijing Forestry University, Beijing, China
- Yaoming Li,
| | - Baoming Ji
- School of Grassland Science, Beijing Forestry University, Beijing, China
| |
Collapse
|
12
|
Al-Yahya’ei MN, Błaszkowski J, Al-Hashmi H, Al-Farsi K, Al-Rashdi I, Patzelt A, Boller T, Wiemken A, Symanczik S. From isolation to application: a case study of arbuscular mycorrhizal fungi of the Arabian Peninsula. Symbiosis 2021; 86:123-132. [PMID: 35368327 PMCID: PMC8933382 DOI: 10.1007/s13199-021-00824-x] [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: 08/16/2021] [Accepted: 11/19/2021] [Indexed: 11/03/2022]
Abstract
Abstract
The vegetation in the Arabian Peninsula experiences drought, heat, soil salinity, and low fertility, mainly due to low phosphorus (P) availability. The beneficial mycorrhizal symbiosis between plants and arbuscular mycorrhizal fungi (AMF) is a key factor supporting plant growth under such environmental conditions. Therefore, AMF strains isolated from these soils might be useful as biotechnological tools for agriculture and revegetation practices in the region. Here we present a pioneering program to isolate, identify, and apply AMF isolated from rhizosphere soils of agricultural and natural habitats, namely date palm plantations and five native desert plants, respectively in the Southern Arabian Peninsula. We established taxonomically unique AMF species as single-spore cultures as part of an expanding collection of AMF strains adapted to arid ecosystems. Preliminary experiments were conducted to evaluate the abilities of these AMF strains to promote seedling growth of a main crop Phoenix dactylifera L. and a common plant Prosopis cineraria L. (Druce) in the Arabian Peninsula. The results showed that inoculation with certain AMF species enhanced the growth of both plants, highlighting the potential of these fungi as part of sustainable land use practices in this region.
Collapse
|
13
|
Thomsen C, Loverock L, Kokkoris V, Holland T, Bowen PA, Hart M. Commercial arbuscular mycorrhizal fungal inoculant failed to establish in a vineyard despite priority advantage. PeerJ 2021; 9:e11119. [PMID: 33981489 PMCID: PMC8071076 DOI: 10.7717/peerj.11119] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 02/25/2021] [Indexed: 11/24/2022] Open
Abstract
Background Arbuscular mycorrhizal (AM) fungi associate with most plants and can increase nutrient uptake. As a result, commercial inoculants called “biofertilizers” containing AM fungi have been developed and marketed to increase plant performance. However, successful establishment of these inoculants remains a challenge, and may be negatively impacted by competition with fungi already present (priority effects). Perennial agriculture may be more amenable if inoculants can be successfully established on crops prior to field planting. Methods Here, we inoculate grapevine (Vitis vinifera) with a commercial inoculant in three treatments designed to manipulate the strength and direction of priority effects and quantified the abundance of the fungal strain before and after introduction using droplet digital PCR (ddPCR). Results We found that the introduced strain did not establish in any treatment, even with priority advantage, and inoculated vines did not differ in performance from non-inoculated vines. Fungal abundance was not greater than in pre-inoculation soil samples during any of the five years sampled and may have been impaired by high available phosphorus levels in the soil. This study highlights the need to understand and evaluate how the management of the agricultural system will affect establishment before introduction of “biofertilizers”, which is often unpredictable.
Collapse
Affiliation(s)
- Corrina Thomsen
- Department of Biology, University of British Columbia Okanagan, Kelowna, BC, Canada
| | - Laura Loverock
- Department of Biology, University of British Columbia Okanagan, Kelowna, BC, Canada
| | - Vasilis Kokkoris
- Department of Biology, University of Ottawa, Ottawa, ON, Canada.,Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Taylor Holland
- Department of Biology, University of British Columbia Okanagan, Kelowna, BC, Canada
| | - Patricia A Bowen
- Summerland Research and Development Centre, Agriculture and Agri-food Canada, Summerland, BC, Canada
| | - Miranda Hart
- Department of Biology, University of British Columbia Okanagan, Kelowna, BC, Canada
| |
Collapse
|
14
|
Tsiknia M, Tsikou D, Papadopoulou KK, Ehaliotis C. Multi-species relationships in legume roots: From pairwise legume-symbiont interactions to the plant - microbiome - soil continuum. FEMS Microbiol Ecol 2021; 97:5957530. [PMID: 33155054 DOI: 10.1093/femsec/fiaa222] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 11/03/2020] [Indexed: 01/02/2023] Open
Abstract
Mutualistic relationships of legume plants with, either bacteria (like rhizobia) or fungi (like arbuscular mycorrhizal fungi), have been investigated intensively, usually as bi-partite interactions. However, diverse symbiotic interactions take place simultaneously or sequentially under field conditions. Their collective, but not additive, contribution to plant growth and performance remains hard to predict, and appears to be furthermore affected by crop species and genotype, non-symbiotic microbial interactions and environmental variables. The challenge is: (i) to unravel the complex overlapping mechanisms that operate between the microbial symbionts as well as between them, their hosts and the rhizosphere (ii) to understand the dynamics of the respective mechanisms in evolutionary and ecological terms. The target for agriculture, food security and the environment, is to use this insight as a solid basis for developing new integrated technologies, practices and strategies for the efficient use of beneficial microbes in legumes and other plants. We review recent advances in our understanding of the symbiotic interactions in legumes roots brought about with the aid of molecular and bioinformatics tools. We go through single symbiont-host interactions, proceed to tripartite symbiont-host interactions, appraise interactions of symbiotic and associative microbiomes with plants in the root-rhizoplane-soil continuum of habitats and end up by examining attempts to validate community ecology principles in the legume-microbe-soil biosystem.
Collapse
Affiliation(s)
- Myrto Tsiknia
- Soils and Soil Chemistry Lab, Department of Natural Resources and Agricultural Engineering, Agricultural University of Athens, Iera Odos 75 st., Athens 11855, Greece
| | - Daniela Tsikou
- Laboratory of Plant and Environmental Biotechnology, Department of Biochemistry and Biotechnology, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Kalliope K Papadopoulou
- Laboratory of Plant and Environmental Biotechnology, Department of Biochemistry and Biotechnology, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Constantinos Ehaliotis
- Soils and Soil Chemistry Lab, Department of Natural Resources and Agricultural Engineering, Agricultural University of Athens, Iera Odos 75 st., Athens 11855, Greece
| |
Collapse
|
15
|
Abstract
Specific quantification of root-colonizing arbuscular mycorrhizal fungi (AMF) by quantitative real-time PCR is a high-throughput technique, most suitable for determining abundances of AMF species or isolates in previously characterized experimental systems. The principal steps are the choice and validation of an appropriate assay to specifically amplify a gene fragment of the target AMF, preparation of templates from root samples, and quantification of the fungal gene copy numbers in these templates. The use of a suitable assay is crucial for a correct data collection but also highly specific for each experimental system and is therefore covered by general recommendations. Subsequently, specific steps are described for the validation of the assay using a standard dilution series, the determination of appropriate dilutions of DNA extracts from roots, and the quantification of the gene copy numbers in samples including calculations.
Collapse
|
16
|
Arbuscular Mycorrhizal Fungal Communities in the Soils of Desert Habitats. Microorganisms 2021; 9:microorganisms9020229. [PMID: 33499315 PMCID: PMC7912695 DOI: 10.3390/microorganisms9020229] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/15/2021] [Accepted: 01/19/2021] [Indexed: 12/25/2022] Open
Abstract
Deserts cover a significant proportion of the Earth’s surface and continue to expand as a consequence of climate change. Mutualistic arbuscular mycorrhizal (AM) fungi are functionally important plant root symbionts, and may be particularly important in drought stressed systems such as deserts. Here we provide a first molecular characterization of the AM fungi occurring in several desert ecosystems worldwide. We sequenced AM fungal DNA from soil samples collected from deserts in six different regions of the globe using the primer pair WANDA-AML2 with Illumina MiSeq. We recorded altogether 50 AM fungal phylotypes. Glomeraceae was the most common family, while Claroideoglomeraceae, Diversisporaceae and Acaulosporaceae were represented with lower frequency and abundance. The most diverse site, with 35 virtual taxa (VT), was in the Israeli Negev desert. Sites representing harsh conditions yielded relatively few reads and low richness estimates, for example, a Saudi Arabian desert site where only three Diversispora VT were recorded. The AM fungal taxa recorded in the desert soils are mostly geographically and ecologically widespread. However, in four sites out of six, communities comprised more desert-affiliated taxa (according to the MaarjAM database) than expected at random. AM fungal VT present in samples were phylogenetically clustered compared with the global taxon pool, suggesting that nonrandom assembly processes, notably habitat filtering, may have shaped desert fungal assemblages.
Collapse
|
17
|
Singh U, Akhtar O, Mishra R, Zoomi I, Kehri HK, Pandey D. Arbuscular Mycorrhizal Fungi: Biodiversity, Interaction with Plants, and Potential Applications. Fungal Biol 2021. [DOI: 10.1007/978-3-030-67561-5_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
18
|
Martignoni MM, Garnier J, Hart MM, Tyson RC. Investigating the impact of the mycorrhizal inoculum on the resident fungal community and on plant growth. Ecol Modell 2020. [DOI: 10.1016/j.ecolmodel.2020.109321] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
19
|
Chebaane A, Symanczik S, Oehl F, Azri R, Gargouri M, Mäder P, Mliki A, Fki L. Arbuscular mycorrhizal fungi associated with Phoenix dactylifera L. grown in Tunisian Sahara oases of different salinity levels. Symbiosis 2020. [DOI: 10.1007/s13199-020-00692-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
20
|
Kokkoris V, Li Y, Hamel C, Hanson K, Hart M. Site specificity in establishment of a commercial arbuscular mycorrhizal fungal inoculant. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 660:1135-1143. [PMID: 30743909 DOI: 10.1016/j.scitotenv.2019.01.100] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 01/09/2019] [Accepted: 01/09/2019] [Indexed: 05/02/2023]
Abstract
While establishment and persistence of arbuscular mycorrhizal (AM) fungal inoculants in agricultural fields are critical to their success, little is known about how farming practices can affect their establishment in field. We developed a probe assay specific to a commercial AM fungal inoculant (Rhizoglomus irregulare DAOM197198) and tested its establishment among different grain cropping practices in the field. Establishment of the fungus was not related to cropping, or inoculation practices. Instead, establishment was site specific over the two growing seasons. Our results show that it is not yet possible to predict inoculation success in the field and use of biofertilizers requires further research under field conditions to identify key factors involved in establishment and persistence.
Collapse
Affiliation(s)
- Vasilis Kokkoris
- Department of Biology, University of British Columbia, Okanagan campus, 3333 University Way, Kelowna, BC V1V 1V7, Canada.
| | - Yunliang Li
- Swift Current Research and Development Centre, Agriculture and Agri-Food Canada, 1 Airport Road, Swift Current, SK S9H 3X2, Canada
| | - Chantal Hamel
- Quebec Research and Development Centre, Agriculture and Agri-Food Canada, 2560 Hochelaga, Boulevard, Quebec, QC G1 V 2J3, Canada
| | - Keith Hanson
- Swift Current Research and Development Centre, Agriculture and Agri-Food Canada, 1 Airport Road, Swift Current, SK S9H 3X2, Canada
| | - Miranda Hart
- Department of Biology, University of British Columbia, Okanagan campus, 3333 University Way, Kelowna, BC V1V 1V7, Canada
| |
Collapse
|
21
|
Voříšková A, Jansa J, Püschel D, Vosátka M, Šmilauer P, Janoušková M. Abiotic contexts consistently influence mycorrhiza functioning independently of the composition of synthetic arbuscular mycorrhizal fungal communities. MYCORRHIZA 2019; 29:127-139. [PMID: 30612193 DOI: 10.1007/s00572-018-00878-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 12/13/2018] [Indexed: 05/26/2023]
Abstract
The relationship between mycorrhiza functioning and composition of arbuscular mycorrhizal (AM) fungal communities is an important but experimentally still rather little explored topic. The main aim of this study was thus to link magnitude of plant benefits from AM symbiosis in different abiotic contexts with quantitative changes in AM fungal community composition. A synthetic AM fungal community inoculated to the model host plant Medicago truncatula was exposed to four different abiotic contexts, namely drought, elevated phosphorus availability, and shading, as compared to standard cultivation conditions, for two cultivation cycles. Growth and phosphorus uptake of the host plants was evaluated along with the quantitative composition of the synthetic AM fungal community. Abiotic context consistently influenced mycorrhiza functioning in terms of plant benefits, and the effects were clearly linked to the P requirement of non-inoculated control plants. In contrast, the abiotic context only had a small and transient effect on the quantitative AM fungal community composition. Our findings suggest no relationship between the degree of mutualism in AM symbiosis and the relative abundances of AM fungal species in communities in our simplified model system. The observed progressive dominance of one AM fungal species indicates an important role of different growth rates of AM fungal species for the establishment of AM fungal communities in simplified systems such as agroecosystems.
Collapse
Affiliation(s)
- Alena Voříšková
- Institute of Botany, The Czech Academy of Sciences, Zámek 1, 252 43, Průhonice, Czech Republic.
- Department of Experimental Plant Biology, Faculty of Science, Charles University, Viničná 5, 128 00, Prague, Czech Republic.
| | - Jan Jansa
- Institute of Microbiology, The Czech Academy of Sciences, Vídeňská 1083, 142 00, Prague, Czech Republic
| | - David Püschel
- Institute of Botany, The Czech Academy of Sciences, Zámek 1, 252 43, Průhonice, Czech Republic
- Institute of Microbiology, The Czech Academy of Sciences, Vídeňská 1083, 142 00, Prague, Czech Republic
| | - Miroslav Vosátka
- Institute of Botany, The Czech Academy of Sciences, Zámek 1, 252 43, Průhonice, Czech Republic
- Department of Experimental Plant Biology, Faculty of Science, Charles University, Viničná 5, 128 00, Prague, Czech Republic
| | - Petr Šmilauer
- Department of Ecosystem Biology, Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
| | - Martina Janoušková
- Institute of Botany, The Czech Academy of Sciences, Zámek 1, 252 43, Průhonice, Czech Republic
| |
Collapse
|
22
|
Bencherif K, Dalpé Y, Lounès-Hadj Sahraoui A. Influence of Native Arbuscular Mycorrhizal Fungi and Pseudomonas fluorescens on Tamarix Shrubs Under Different Salinity Levels. SOIL BIOLOGY 2019. [DOI: 10.1007/978-3-030-18975-4_11] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
23
|
Thomsen CN, Hart MM. Using invasion theory to predict the fate of arbuscular mycorrhizal fungal inoculants. Biol Invasions 2018. [DOI: 10.1007/s10530-018-1746-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
24
|
Hart MM, Antunes PM, Chaudhary VB, Abbott LK. Fungal inoculants in the field: Is the reward greater than the risk? Funct Ecol 2017. [DOI: 10.1111/1365-2435.12976] [Citation(s) in RCA: 120] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
25
|
Janoušková M, Krak K, Vosátka M, Püschel D, Štorchová H. Inoculation effects on root-colonizing arbuscular mycorrhizal fungal communities spread beyond directly inoculated plants. PLoS One 2017; 12:e0181525. [PMID: 28738069 PMCID: PMC5524347 DOI: 10.1371/journal.pone.0181525] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 07/03/2017] [Indexed: 12/18/2022] Open
Abstract
Inoculation with arbuscular mycorrhizal fungi (AMF) may improve plant performance at disturbed sites, but inoculation may also suppress root colonization by native AMF and decrease the diversity of the root-colonizing AMF community. This has been shown for the roots of directly inoculated plants, but little is known about the stability of inoculation effects, and to which degree the inoculant and the inoculation-induced changes in AMF community composition spread into newly emerging seedlings that were not in direct contact with the introduced propagules. We addressed this topic in a greenhouse experiment based on the soil and native AMF community of a post-mining site. Plants were cultivated in compartmented pots with substrate containing the native AMF community, where AMF extraradical mycelium radiating from directly inoculated plants was allowed to inoculate neighboring plants. The abundances of the inoculated isolate and of native AMF taxa were monitored in the roots of the directly inoculated plants and the neighboring plants by quantitative real-time PCR. As expected, inoculation suppressed root colonization of the directly inoculated plants by other AMF taxa of the native AMF community and also by native genotypes of the same species as used for inoculation. In the neighboring plants, high abundance of the inoculant and the suppression of native AMF were maintained. Thus, we demonstrate that inoculation effects on native AMF propagate into plants that were not in direct contact with the introduced inoculum, and are therefore likely to persist at the site of inoculation.
Collapse
Affiliation(s)
- Martina Janoušková
- Institute of Botany, The Czech Academy of Sciences, Průhonice, Czech Republic
| | - Karol Krak
- Institute of Botany, The Czech Academy of Sciences, Průhonice, Czech Republic
| | - Miroslav Vosátka
- Institute of Botany, The Czech Academy of Sciences, Průhonice, Czech Republic
| | - David Püschel
- Institute of Botany, The Czech Academy of Sciences, Průhonice, Czech Republic
| | - Helena Štorchová
- Institute of Experimental Botany, The Czech Academy of Sciences, Praha, Czech Republic
| |
Collapse
|
26
|
Symanczik S, Gisler M, Thonar C, Schlaeppi K, Van der Heijden M, Kahmen A, Boller T, Mäder P. Application of Mycorrhiza and Soil from a Permaculture System Improved Phosphorus Acquisition in Naranjilla. FRONTIERS IN PLANT SCIENCE 2017; 8:1263. [PMID: 28769964 PMCID: PMC5515901 DOI: 10.3389/fpls.2017.01263] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 07/04/2017] [Indexed: 06/07/2023]
Abstract
Naranjilla (Solanum quitoense) is a perennial shrub plant mainly cultivated in Ecuador, Colombia, and Central America where it represents an important cash crop. Current cultivation practices not only cause deforestation and large-scale soil degradation but also make plants highly susceptible to pests and diseases. The use of arbuscular mycorrhizal fungi (AMF) can offer a possibility to overcome these problems. AMF can act beneficially in various ways, for example by improving plant nutrition and growth, water relations, soil structure and stability and protection against biotic and abiotic stresses. In this study, the impact of AMF inoculation on growth and nutrition parameters of naranjilla has been assessed. For inoculation three European reference AMF strains (Rhizoglomus irregulare, Claroideoglomus claroideum, and Cetraspora helvetica) and soils originating from three differently managed naranjilla plantations in Ecuador (conventional, organic, and permaculture) have been used. This allowed for a comparison of the performance of exotic AMF strains (reference strains) versus native consortia contained in the three soils used as inocula. To study fungal communities present in the three soils, trap cultures have been established using naranjilla as host plant. The community structures of AMF and other fungi inhabiting the roots of trap cultured naranjilla were assessed using next generation sequencing (NGS) methods. The growth response experiment has shown that two of the three reference AMF strains, a mixture of the three and soil from a permaculture site led to significantly better acquisition of phosphorus (up to 104%) compared to uninoculated controls. These results suggest that the use of AMF strains and local soils as inoculants represent a valid approach to improve nutrient uptake efficiency of naranjilla and consequently to reduce inputs of mineral fertilizers in the cultivation process. Improved phosphorus acquisition after inoculation with permaculture soil might have been caused by a higher abundance of AMF and the presence of Piriformospora indica as revealed by NGS. A higher frequency of AMF and enhanced root colonization rates in the trap cultures supplemented with permaculture soil highlight the importance of diverse agricultural systems for soil quality and crop production.
Collapse
Affiliation(s)
- Sarah Symanczik
- Department of Soil Sciences, Research Institute of Organic AgricultureFrick, Switzerland
| | - Michelle Gisler
- Department of Soil Sciences, Research Institute of Organic AgricultureFrick, Switzerland
- Department of Environmental Sciences, University of BaselBasel, Switzerland
| | - Cécile Thonar
- Department of Soil Sciences, Research Institute of Organic AgricultureFrick, Switzerland
| | - Klaus Schlaeppi
- Department of Agroecology and Environment, AgroscopeZürich, Switzerland
| | | | - Ansgar Kahmen
- Department of Environmental Sciences, University of BaselBasel, Switzerland
| | - Thomas Boller
- Department of Environmental Sciences, University of BaselBasel, Switzerland
| | - Paul Mäder
- Department of Soil Sciences, Research Institute of Organic AgricultureFrick, Switzerland
| |
Collapse
|
27
|
Arbuscular mycorrhizal fungi associating with roots of Alnus and Rubus in Europe and the Middle East. FUNGAL ECOL 2016. [DOI: 10.1016/j.funeco.2016.08.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
28
|
Herrmann L, Lesueur D, Bräu L, Davison J, Jairus T, Robain H, Robin A, Vasar M, Wiriyakitnateekul W, Öpik M. Diversity of root-associated arbuscular mycorrhizal fungal communities in a rubber tree plantation chronosequence in Northeast Thailand. MYCORRHIZA 2016; 26:863-877. [PMID: 27448680 DOI: 10.1007/s00572-016-0720-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 06/30/2016] [Indexed: 06/06/2023]
Abstract
Rubber tree (Hevea brasiliensis) is of major economic importance in Southeast Asia and for small land holders in Thailand in particular. Due to the high value of latex, plantations are expanding into unsuitable areas, such as the northeast province of Thailand where soil fertility is very low and therefore appropriate management practices are of primary importance. Arbuscular mycorrhizal fungi (AMF) contribute to plant growth through a range of mechanisms and could play a key role in a more sustainable management of the rubber plantations. We described the diversity of AMF associated with rubber tree roots in Northeast Thailand in relation to tree age and soil parameters along a chronosequence of rubber tree plantations. Cassava fields were included for comparison. Rubber tree and cassava roots harbored high diversity of AMF (111 Virtual Taxa, VT), including 20 novel VT. AMF VT richness per sample was consistently high (per site mean 16 to 21 VT per sample) along the chronosequence and was not related to soil properties. The composition of AMF communities differed between cassava and rubber tree plantations and was influenced by soil texture and nutrient content (sand, K, P, Ca). AMF community composition gradually shifted with the age of the trees. Our results suggest that the high diversity of AMF in this region is potentially significant for maintaining high functionality of AMF communities.
Collapse
Affiliation(s)
- Laetitia Herrmann
- School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment - Deakin University (Burwood Campus), Melbourne, Australia.
- CIRAD, UMR Eco&Sols, Land Development Department - Office of Science for Land Development, Paholyothin Road, Chatuchak, Bangkok, 10900, Thailand.
| | - Didier Lesueur
- School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment - Deakin University (Burwood Campus), Melbourne, Australia
- CIRAD, UMR Eco&Sols, Land Development Department - Office of Science for Land Development, Paholyothin Road, Chatuchak, Bangkok, 10900, Thailand
| | - Lambert Bräu
- School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment - Deakin University (Burwood Campus), Melbourne, Australia
| | - John Davison
- Department of Botany, University of Tartu, 40 Lai Street, 51005, Tartu, Estonia
| | - Teele Jairus
- Department of Botany, University of Tartu, 40 Lai Street, 51005, Tartu, Estonia
| | - Henri Robain
- IRD, UMR IEES, Land Development Department - Office of Science for Land Development, Paholyothin Road, Chatuchak, Bangkok, 10900, Thailand
| | - Agnès Robin
- CIRAD, UMR Eco&Sols, 2 place Viala, 34060, Montpellier, France
| | - Martti Vasar
- Department of Botany, University of Tartu, 40 Lai Street, 51005, Tartu, Estonia
| | - Wanpen Wiriyakitnateekul
- Land Development Department - Office of Science for Land Development, Paholyothin Road, Chatuchak, Bangkok, 10900, Thailand
| | - Maarja Öpik
- Department of Botany, University of Tartu, 40 Lai Street, 51005, Tartu, Estonia
| |
Collapse
|
29
|
Davidson BE, Novak SJ, Serpe MD. Consequences of inoculation with native arbuscular mycorrhizal fungi for root colonization and survival of Artemisia tridentata ssp. wyomingensis seedlings after transplanting. MYCORRHIZA 2016; 26:595-608. [PMID: 27075898 DOI: 10.1007/s00572-016-0696-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 04/05/2016] [Indexed: 06/05/2023]
Abstract
In arid environments, the propagule density of arbuscular mycorrhizal fungi (AMF) may limit the extent of the plant-AMF symbiosis. Inoculation of seedlings with AMF could alleviate this problem, but the success of this practice largely depends on the ability of the inoculum to multiply and colonize the growing root system after transplanting. These phenomena were investigated in Artemisia tridentata ssp. wyomingensis (Wyoming big sagebrush) seedlings inoculated with native AMF. Seedlings were first grown in a greenhouse in soil without AMF (non-inoculated seedlings) or with AMF (inoculated seedlings). In spring and fall, 3-month-old seedlings were transplanted outdoors to 24-L pots containing soil from a sagebrush habitat (spring and fall mesocosm experiments) or to a recently burned sagebrush habitat (spring and fall field experiments). Five or 8 months after transplanting, colonization was about twofold higher in inoculated than non-inoculated seedlings, except for the spring field experiment. In the mesocosm experiments, inoculation increased survival during the summer by 24 % (p = 0.011). In the field experiments, increased AMF colonization was associated with increases in survival during cold and dry periods; 1 year after transplanting, survival of inoculated seedlings was 27 % higher than that of non-inoculated ones (p < 0.001). To investigate possible mechanisms by which AMF increased survival, we analyzed water use efficiency (WUE) based on foliar (13)C/(12)C isotope ratios (δ (13)C). A positive correlation between AMF colonization and δ (13)C values was observed in the spring mesocosm experiment. In contrast, inoculation did not affect the δ (13)C values of fall transplanted seedlings that were collected the subsequent spring. The effectiveness of AMF inoculation on enhancing colonization and reducing seedling mortality varied among the different experiments, but average effects were estimated by meta-analyses. Several months after transplanting, average AMF colonization was in proportion 84 % higher in inoculated than non-inoculated seedlings (p = 0.0042), while the average risk of seedling mortality was 42 % lower in inoculated than non-inoculated seedlings (p = 0.047). These results indicate that inoculation can increase AMF colonization over the background levels occurring in the soil, leading to higher rates of survival.
Collapse
Affiliation(s)
- Bill E Davidson
- Department of Biological Sciences, Boise State University, 1910 University Drive, Boise, ID, 83725-1515, USA
| | - Stephen J Novak
- Department of Biological Sciences, Boise State University, 1910 University Drive, Boise, ID, 83725-1515, USA
| | - Marcelo D Serpe
- Department of Biological Sciences, Boise State University, 1910 University Drive, Boise, ID, 83725-1515, USA.
| |
Collapse
|
30
|
Plouznikoff K, Declerck S, Calonne-Salmon M. Mitigating Abiotic Stresses in Crop Plants by Arbuscular Mycorrhizal Fungi. BELOWGROUND DEFENCE STRATEGIES IN PLANTS 2016. [DOI: 10.1007/978-3-319-42319-7_15] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|