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Bento RA, de Novais CB, Saggin-Júnior OJ, de Oliveira LA, Sampaio PDTB. Pioneer Tree Bellucia imperialis (Melastomataceae) from Central Amazon with Seedlings Highly Dependent on Arbuscular Mycorrhizal Fungi. J Fungi (Basel) 2023; 9:jof9050540. [PMID: 37233251 DOI: 10.3390/jof9050540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/17/2023] [Accepted: 04/26/2023] [Indexed: 05/27/2023] Open
Abstract
Bellucia imperialis is one of the most abundant pioneer tree species in anthropized areas of the Central Amazon, and has ecological importance for the environmental resilience of phosphorus (P)-depleted areas. Thus, we investigated whether B. imperialis depends on symbiosis with arbuscular mycorrhizal fungi (AMF) to grow and establish under the edaphic stresses of low nutrient content and low surface moisture retention capacity of the substrate. We tried three AMF inoculation treatments: (1) CON-no mycorrhizae; (2) MIX-with AMF from pure collection cultures, and (3) NAT-with native AMF, combined with five doses of P via a nutrient solution. All CON treatment seedlings died without AMF, showing the high mycorrhizal dependence of B. imperialis. Increasing P doses significantly decreased the leaf area and shoot and root biomass growth for both the NAT and MIX treatments. Increasing P doses did not affect spore number or mycorrhizal colonization, but decreased the diversity of AMF communities. Some species of the AMF community showed plasticity, enabling them to withstand shortages of and excess P. B. imperialis was shown to be sensitive to excess P, promiscuous, dependent on AMF, and tolerant of scarce nutritional resources, highlighting the need to inoculate seedlings to reforest impacted areas.
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Affiliation(s)
- Ricardo Aparecido Bento
- Postgraduate Program in Tropical Forest Sciences (PPG-CFT) at the National Research Institute of Amazonas (INPA), Federal Institute of Education, Science and Technology of Amazonas (IFAM), Manaus 69086-475, Brazil
| | - Cândido Barreto de Novais
- Department of Soil at the Federal Rural University of Rio de Janeiro (UFRRJ), Seropédica 23897-000, Brazil
| | - Orivaldo José Saggin-Júnior
- Laboratory of Mycorrhiza of the Brazilian Agricultural Research Corporation-Embrapa Agrobiology, Seropédica 23891-000, Brazil
| | - Luiz Antonio de Oliveira
- Laboratory of Ecology and Biotechnology of Microorganisms from the Amazon, Tropical Forestry of the National Research Institute of Amazonas (INPA), Manaus 69060-001, Brazil
| | - Paulo de Tarso Barbosa Sampaio
- Laboratory of Ecology and Biotechnology of Microorganisms from the Amazon, Tropical Forestry of the National Research Institute of Amazonas (INPA), Manaus 69060-001, Brazil
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2
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Arbuscular Mycorrhizal Fungi in the Colombian Amazon: A Historical Review. Fungal Biol 2022. [DOI: 10.1007/978-3-031-12994-0_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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3
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Dos Passos JH, Maia LC, de Assis DMA, da Silva JA, Oehl F, da Silva IR. Arbuscular Mycorrhizal Fungal Community Structure in the Rhizosphere of Three Plant Species of Crystalline and Sedimentary Areas in the Brazilian Dry Forest. MICROBIAL ECOLOGY 2021; 82:104-121. [PMID: 32761501 DOI: 10.1007/s00248-020-01557-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 07/09/2020] [Indexed: 06/11/2023]
Abstract
The Brazilian dry forest (Caatinga) is located in one of the world's largest tropical semiarid regions, and it occurs on two large geological environments named the crystalline and sedimentary basins. In order to determine the structure and the main drivers of the composition of communities of arbuscular mycorrhizal fungi (AMF) in the Caatinga, we collected soil samples from the rhizosphere of Jatropha mollissima, J. mutabilis, and Mimosa tenuiflora, species that occur in crystalline and sedimentary areas. Ninety-six AMF taxa were identified from soils collected directly in the field and trap cultures. Acaulospora, Glomus, and Rhizoglomus represented almost 49% of the taxon richness. The composition of the AMF communities differed between the crystalline and sedimentary areas and between the rhizospheres of the three plant species. Coarse sand, total sand, natural clay, calcium, soil particles density, flocculation, pH, and base saturation were the principal edaphic variables related to the distribution of these organisms. We registered nine and 17 AMF species classified as indicators, for the geological environments and plant species, respectively. Glomerospores of Glomerales predominated in crystalline basins, whereas glomerospores of Gigasporales prevailed in sedimentary areas; among the plant species, lower number of glomerospores of Archaeosporales and Glomerales was recorded in the rhizosphere of J. mollissima. The results show that the AMF community composition is shaped by geological environments and plant hosts. In addition, soil characteristics, mainly physical attributes, significantly influence the structure of Glomeromycota communities occurring in areas of the Brazilian semiarid.
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Affiliation(s)
- José Hilton Dos Passos
- Programa de Pós-Graduacao em Biologia de Fungos, Universidade Federal de Pernambuco, Av. da Engenharia, s/n, Cidade Universitaria, Recife, PE, 50740-600, Brazil
| | - Leonor Costa Maia
- Programa de Pós-Graduacao em Biologia de Fungos, Universidade Federal de Pernambuco, Av. da Engenharia, s/n, Cidade Universitaria, Recife, PE, 50740-600, Brazil
| | - Daniele Magna Azevedo de Assis
- Programa de Pós-Graduacao em Biologia de Fungos, Universidade Federal de Pernambuco, Av. da Engenharia, s/n, Cidade Universitaria, Recife, PE, 50740-600, Brazil.
| | - Jailma Alves da Silva
- Programa de Pós-Graduacao em Biologia de Fungos, Universidade Federal de Pernambuco, Av. da Engenharia, s/n, Cidade Universitaria, Recife, PE, 50740-600, Brazil
| | - Fritz Oehl
- Agroscope, Competence Division for Plants and Plant Products, Ecotoxicology, Müller-Thurgau-Strasse 29, CH-8820, Wädenswil, Switzerland
| | - Iolanda Ramalho da Silva
- Sierra Nevada Research Institute, University of California, Merced, 5200 N Lake Rd, CA, 95343, Merced, USA
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Moukarzel R, Ridgway HJ, Guerin-Laguette A, Jones EE. Grapevine rootstocks drive the community structure of arbuscular mycorrhizal fungi in New Zealand vineyards. J Appl Microbiol 2021; 131:2941-2956. [PMID: 34028142 DOI: 10.1111/jam.15160] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 05/02/2021] [Accepted: 05/20/2021] [Indexed: 11/27/2022]
Abstract
AIM Arbuscular mycorrhizal fungi (AMF) are often regarded as non-specific symbionts, but some AMF communities show host preference in various ecosystems including vineyards. Grapevine plants are very responsive to AMF colonization. Although these fungi have potentially significant applications for sustainable agricultural ecosystems, there is a gap in knowledge regarding AMF-grapevine interactions worldwide and especially in New Zealand. This study focused on identifying AMF taxa colonizing grapevines in New Zealand vineyards and investigated the effect of grapevine rootstocks on AMF community diversity and composition. METHODS AND RESULTS Denaturing gradient gel electrophoresis (DGGE) and trap cultures were used to characterize the AMF communities. Grapevine roots from three vineyards and nine rootstocks were analysed by DGGE and used in trap cultures for AMF recovery. Trap cultures allowed the recovery of six AMF spore morphotypes that belonged to Ambispora sp., Claroideoglomus sp., Funneliformis sp. and Glomus sp. Bands excised, reamplified and sequenced from the DGGE were assigned to Glomus sp., Rhizophagus sp. and Claroideoglomus sp. The AMF community analyses demonstrated that rootstock significantly (P < 0·05) influenced the AMF community composition in all sites. CONCLUSIONS The study showed that for a comprehensive identification of AMF, both results from trap culture and molecular work were needed and that the rootstock cultivar was the main driver of the arbuscular mycorrhizal community colonizing the roots. SIGNIFICANCE AND IMPACT OF THE STUDY This study provides a firm foundation for future research exploring the beneficial use of AMF in enhancing grapevine production and sustainability.
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Affiliation(s)
- R Moukarzel
- Lincoln University, Lincoln, Canterbury, New Zealand
| | - H J Ridgway
- The New Zealand Institute for Plant and Food Research Ltd, Private Bag 4704, Christchurch, New Zealand
| | - A Guerin-Laguette
- Mycotree C/-Southern Woods Nursery, Christchurch, Canterbury, New Zealand
| | - E E Jones
- Lincoln University, Lincoln, Canterbury, New Zealand
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Diversity of Arbuscular Mycorrhizal Fungi in Trap Cultures Prepared from Abandoned Coalmine Overburden Spoils. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2019. [DOI: 10.22207/jpam.13.1.72] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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6
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Soil Physicochemical Properties and the Rhizosphere Soil Fungal Community in a Mulberry (Morus alba L.)/Alfalfa (Medicago sativa L.) Intercropping System. FORESTS 2019. [DOI: 10.3390/f10020167] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A better understanding of soil fungal communities is very useful in revealing the effects of an agroforestry system and would also help us to understand the fungi-mediated effects of agricultural practices on the processes of soil nutrient cycling and crop productivity. Compared to conventional monoculture farming, agroforestry systems have obvious advantages in improving land use efficiency and maintaining soil physicochemical properties, reducing losses of water, soil material, organic matter, and nutrients, as well as ensuring the stability of yields. In this study, we attempted to investigate the impact of a mulberry/alfalfa intercropping system on the soil physicochemical properties and the rhizosphere fungal characteristics (such as the diversity and structure of the fungal community), and to analyze possible correlations among the planting pattern, the soil physicochemical factors, and the fungal community structure. In the intercropping and monoculture systems, we determined the soil physicochemical properties using chemical analysis and the fungal community structure with MiSeq sequencing of the fungal ITS1 region. The results showed that intercropping significantly improved the soil physicochemical properties of alfalfa (total nitrogen, alkaline hydrolysable nitrogen, available potassium, and total carbon contents). Sequencing results showed that the dominant taxonomic groups were Ascomycota, Basidiomycota, and Mucoromycota. Intercropping increased the fungal richness of mulberry and alfalfa rhizosphere soils and improved the fungal diversity of mulberry. The diversity and structure of the fungal community were predominantly influenced by both the planting pattern and soil environmental factors (total nitrogen, total phosphate, and total carbon). Variance partitioning analysis showed that the planting pattern explained 25.9% of the variation of the fungal community structure, and soil environmental factors explained 63.1% of the variation. Planting patterns and soil physicochemical properties conjointly resulted in changes of the soil fungal community structure in proportion.
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Pagano MC, Falcão N, Weber OB, Correa EA, Faggioli VS, Grilli G, Covacevich F, Cabello MN. Mycorrhizas in South American Anthropic Environments. Fungal Biol 2019. [DOI: 10.1007/978-3-030-15228-4_17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Microbial Diversity: The Gap between the Estimated and the Known. DIVERSITY-BASEL 2018. [DOI: 10.3390/d10020046] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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10
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Silva GAE, Siqueira JO, Stürmer SL, Moreira FMS. Effectiveness of Arbuscular Mycorrhizal Fungal Isolates from the Land Uses of Amazon Region in Symbiosis with Cowpea. AN ACAD BRAS CIENC 2018; 90:357-371. [PMID: 29424389 DOI: 10.1590/0001-3765201820160189] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 05/26/2016] [Indexed: 11/21/2022] Open
Abstract
Arbuscular mycorrhizal fungi provide several ecosystem services, including increase in plant growth and nutrition. The occurrence, richness, and structure of arbuscular mycorrhizal fungi communities are influenced by human activities, which may affect the functional benefits of these components of the soil biota. In this study, 13 arbuscular mycorrhizal fungi isolates originating from soils with different land uses in the Alto Solimões-Amazon region were evaluated regarding their effect on growth, nutrition, and cowpea yield in controlled conditions using two soils. Comparisons with reference isolates and a mixture of isolates were also performed. Fungal isolates exhibited a wide variability associated with colonization, sporulation, production of aboveground biomass, nitrogen and phosphorus uptake, and grain yield, indicating high functional diversity within and among fungal species. A generalized effect of isolates in promoting phosphorus uptake, increase in biomass, and cowpea yield was observed in both soils. The isolates of Glomus were the most efficient and are promising isolates for practical inoculation programs. No relationship was found between the origin of fungal isolate (i.e. land use) and their symbiotic performance in cowpea.
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Affiliation(s)
- Gláucia Alves E Silva
- Departamento de Ciências do Solo/DCS, Universidade Federal de Lavras/UFLA, Caixa Postal 3037, 37200-000 Lavras, MG, Brazil
| | - José O Siqueira
- Departamento de Ciências do Solo/DCS, Universidade Federal de Lavras/UFLA, Caixa Postal 3037, 37200-000 Lavras, MG, Brazil.,Instituto Tecnológico Vale, Rua Boaventura da Silva, 955, Nazaré, 66055-090 Belém, PA Brazil
| | - Sidney L Stürmer
- Departamento de Ciências Naturais/DCN, Universidade Regional de Blumenau/FURB, Caixa Postal 1507, 89010-971 Blumenau, SC, Brazil
| | - Fatima M S Moreira
- Departamento de Ciências do Solo/DCS, Universidade Federal de Lavras/UFLA, Caixa Postal 3037, 37200-000 Lavras, MG, Brazil
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Garcés-Ruiz M, Senés-Guerrero C, Declerck S, Cranenbrouck S. Arbuscular Mycorrhizal Fungal Community Composition in Carludovica palmata, Costus scaber and Euterpe precatoria from Weathered Oil Ponds in the Ecuadorian Amazon. Front Microbiol 2017; 8:2134. [PMID: 29163421 PMCID: PMC5674942 DOI: 10.3389/fmicb.2017.02134] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 10/18/2017] [Indexed: 12/02/2022] Open
Abstract
Arbuscular mycorrhizal fungi (AMF) are ubiquitous to most natural and anthropized ecosystems, and are often found in polluted environments. However, their occurrence and community composition in highly weathered petroleum-polluted soils has been infrequently reported. In the present study, two ponds of weathered crude oil and their surrounding soil from the Charapa field in the Amazon region of Ecuador were selected and root colonization by AMF of their native plants investigated. The AMF community was further analyzed in three selected plant species (i.e., Carludovica palmata, Costus scaber and Euterpe precatoria) present in the two ponds and the surrounding soil. A fragment covering partial SSU, the whole ITS and partial LSU rDNA region was amplified (i.e., 1.5 kb), cloned and sequenced from the roots of each host species. AMF root colonization exceeded 56% in all plant species examined and no significant difference was observed between sites or plants. For AMF community analysis, a total of 138 AMF sequences were obtained and sorted into 32 OTUs based on clustering (threshold ≥97%) by OPTSIL. The found OTUs belonged to the genera Rhizophagus (22%), Glomus (31%), Acaulospora (25%) and Archaeospora (22%). Glomus and Archaeospora were always present regardless of the plant species or the site. Acaulospora was found in the three plant species and in the two ponds while Rhizophagus was revealed only in the surrounding soil in one plant species (Euterpe precatoria). Our study contributed to the molecular community composition of AMF and revealed an unexpected high presence of four AMF genera which have established a symbiosis with roots of native plants from the Amazon forest under high polluted soil conditions.
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Affiliation(s)
- Mónica Garcés-Ruiz
- Laboratory of Mycology, Earth and Life Institute, Université catholique de Louvain, Louvain-la-Neuve, Belgium
- Laboratorio de Micología, Facultad de Ciencias Exactas y Naturales, Pontificia Universidad Católica del Ecuador, Quito, Ecuador
| | | | - Stéphane Declerck
- Laboratory of Mycology, Earth and Life Institute, Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Sylvie Cranenbrouck
- Laboratory of Mycology, Earth and Life Institute, Université catholique de Louvain, Louvain-la-Neuve, Belgium
- Laboratory of Mycology, Mycothèque de l’Université catholique de Louvain (BCCM/MUCL), Earth and Life Institute, Université catholique de Louvain, Louvain-la-Neuve, Belgium
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12
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Leal PL, Carvalho TSDE, Siqueira JO, Moreira FMS. Assessment of the occurrence and richness of arbuscular mycorrhizal fungal spores by direct analysis of field samples and trap culture - a comparative study. AN ACAD BRAS CIENC 2017; 90:2359-2373. [PMID: 28793011 DOI: 10.1590/0001-3765201720170120] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 04/06/2017] [Indexed: 11/22/2022] Open
Abstract
In this work, we hypothesized that two spore-based methods, direct analysis of field samples and trap cultures, simultaneously used for assessment of occurrence and species richness of arbuscular mycorrhizal fungi (AMF) may vary in their efficiency according to the environmental conditions and the total AMF species richness of the evaluated ecosystem. The performance of both methods was analyzed based on two datasets: 1) a complete site x species matrix compiled from two studies in different land uses in the Amazon using direct analysis of field samples and trap cultures. 2) Total number of AMF morphotypes detected by both methods in published manuscripts across several ecosystems. From dataset 1, direct analysis of field samples revealed 57 morphotypes, whereas only 21 of these were detected by trap culture. Community variation (beta diversity) analysis revealed that field samples are far more sensitive in detecting shifts in AMF community composition among land uses than trap cultures in the Amazon region, with the combined results of both methods being not better than that obtained only by direct analysis of field samples. Analysis of dataset 2 showed that the relative performance of trap cultures, using direct analysis of field sample as reference, was inversely related to the total observed AMF species richness.
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Affiliation(s)
- Patrícia L Leal
- Departamento de Ciência do Solo, Universidade Federal de Lavras, Av. Doutor Sylvio Menicucci, 1001, Bairro Kennedy, 37200-000 Lavras, MG, Brazil.,Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Rua Rio de Contas, 58, Quadra 17, Lote 58, Bairro Candeias, 45029-094 Vitória da Conquista, BA, Brazil
| | - Teotonio S DE Carvalho
- Departamento de Ciência do Solo, Universidade Federal de Lavras, Av. Doutor Sylvio Menicucci, 1001, Bairro Kennedy, 37200-000 Lavras, MG, Brazil
| | - José Oswaldo Siqueira
- Departamento de Ciência do Solo, Universidade Federal de Lavras, Av. Doutor Sylvio Menicucci, 1001, Bairro Kennedy, 37200-000 Lavras, MG, Brazil.,Instituto Tecnológico Vale para Desenvolvimento Sustentável, Rua Boaventura da Silva, 955, Nazaré, 66055-090 Belém, PA, Brazil
| | - Fatima M S Moreira
- Departamento de Ciência do Solo, Universidade Federal de Lavras, Av. Doutor Sylvio Menicucci, 1001, Bairro Kennedy, 37200-000 Lavras, MG, Brazil
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Enrichment of arbuscular mycorrhizal fungi in a contaminated soil after rehabilitation. Braz J Microbiol 2016; 47:853-862. [PMID: 27381069 PMCID: PMC5052336 DOI: 10.1016/j.bjm.2016.06.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 01/11/2016] [Indexed: 11/24/2022] Open
Abstract
Spore counts, species composition and richness of arbuscular mycorrhizal fungi, and soil glomalin contents were evaluated in a soil contaminated with Zn, Cu, Cd and Pb after rehabilitation by partial replacement of the contaminated soil with non-contaminated soil, and by Eucalyptus camaldulensis planting with and without Brachiaria decumbens sowing. These rehabilitation procedures were compared with soils from contaminated non-rehabilitated area and non-contaminated adjacent soils. Arbuscular mycorrhizal fungi communities attributes were assessed by direct field sampling, trap culture technique, and by glomalin contents estimate. Arbuscular mycorrhizal fungi was markedly favored by rehabilitation, and a total of 15 arbuscular mycorrhizal fungi morphotypes were detected in the studied area. Species from the Glomus and Acaulospora genera were the most common mycorrhizal fungi. Number of spores was increased by as much as 300-fold, and species richness almost doubled in areas rehabilitated by planting Eucalyptus in rows and sowing B. decumbens in inter-rows. Contents of heavy metals in the soil were negatively correlated with both species richness and glomalin contents. Introduction of B. decumbens together with Eucalyptus causes enrichment of arbuscular mycorrhizal fungi species and a more balanced community of arbuscular mycorrhizal fungi spores in contaminated soil.
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Links between plant and fungal communities across a deforestation chronosequence in the Amazon rainforest. ISME JOURNAL 2014; 8:1548-50. [PMID: 24451208 DOI: 10.1038/ismej.2013.253] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Revised: 11/13/2013] [Accepted: 12/11/2013] [Indexed: 11/09/2022]
Abstract
Understanding the interactions among microbial communities, plant communities and soil properties following deforestation could provide insights into the long-term effects of land-use change on ecosystem functions, and may help identify approaches that promote the recovery of degraded sites. We combined high-throughput sequencing of fungal rDNA and molecular barcoding of plant roots to estimate fungal and plant community composition in soil sampled across a chronosequence of deforestation. We found significant effects of land-use change on fungal community composition, which was more closely correlated to plant community composition than to changes in soil properties or geographic distance, providing evidence for strong links between above- and below-ground communities in tropical forests.
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de Oliveira Freitas R, Buscardo E, Nagy L, dos Santos Maciel AB, Carrenho R, Luizão RCC. Arbuscular mycorrhizal fungal communities along a pedo-hydrological gradient in a Central Amazonian terra firme forest. MYCORRHIZA 2014; 24:21-32. [PMID: 23754540 DOI: 10.1007/s00572-013-0507-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Accepted: 05/05/2013] [Indexed: 06/02/2023]
Abstract
Little attention has been paid to plant mutualistic interactions in the Amazon rainforest, and the general pattern of occurrence and diversity of arbuscular mycorrhizal fungi (AMF) in these ecosystems is largely unknown. This study investigated AMF communities through their spores in soil in a 'terra firme forest' in Central Amazonia. The contribution played by abiotic factors and plant host species identity in regulating the composition, abundance and diversity of such communities along a topographic gradient with different soils and hydrology was also evaluated. Forty-one spore morphotypes were observed with species belonging to the genera Glomus and Acaulospora, representing 44 % of the total taxa. Soil texture and moisture, together with host identity, were predominant factors responsible for shaping AMF communities along the pedo-hydrological gradient. However, the variability within AMF communities was largely associated with shifts in the relative abundance of spores rather than changes in species composition, confirming that common AMF species are widely distributed in plant communities and all plants recruited into the forest are likely to be exposed to the dominant sporulating AMF species.
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Affiliation(s)
- Rejane de Oliveira Freitas
- Instituto Nacional de Pesquisas da Amazônia (INPA), Coordenação de Biodiversidade (CBIO), Av. Efigênio Sales, 2239, Campus III CP 478, CEP 69011-970, Manaus, Amazonas, Brazil
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Trejo-Aguilar D, Lara-Capistrán L, Maldonado-Mendoza IE, Zulueta-Rodríguez R, Sangabriel-Conde W, Mancera-López ME, Negrete-Yankelevich S, Barois I. Loss of arbuscular mycorrhizal fungal diversity in trap cultures during long-term subculturing. IMA Fungus 2013; 4:161-7. [PMID: 24563828 PMCID: PMC3905934 DOI: 10.5598/imafungus.2013.04.02.01] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 10/09/2013] [Indexed: 11/10/2022] Open
Abstract
Long-term successional dynamics of an inoculum of arbuscular mycorrhizal fungi (AMF) associated with the maize rhizosphere (from traditionally managed agroecosystems in Los Tuxtlas, Veracruz, Mexico), was followed in Bracchiaria comata trap cultures for almost eight years. The results indicate that AMF diversity is lost following long-term subculturing of a single plant host species. Only the dominant species, Claroideoglomus etunicatum, persisted in pot cultures after 13 cycles. The absence of other morphotypes was demonstrated by an 18S rDNA survey, which confirmed that the sequences present solely belonged to C. etunicatum. Members of Diversisporales were the first to decrease in diversity, and the most persistent species belonged to Glomerales.
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Affiliation(s)
- Dora Trejo-Aguilar
- Laboratorio de organismos benéficos. Facultad de Ciencias Agrícolas. Universidad Veracruzana. Gonzalo Aguirre Beltrán S/N. Zona Universitaria. CP 91000. Xalapa, Veracruz, México
| | - Liliana Lara-Capistrán
- Laboratorio de organismos benéficos. Facultad de Ciencias Agrícolas. Universidad Veracruzana. Gonzalo Aguirre Beltrán S/N. Zona Universitaria. CP 91000. Xalapa, Veracruz, México
| | - Ignacio E Maldonado-Mendoza
- Instituto Politécnico Nacional (IPN). CIIDIR-Sinaloa. Departamento de Biotecnología Agrícola. Boulevard Juan de Dios Bátiz Paredes No. 250. CP 81101. AP280. Guasave, Sinaloa, México
| | - Ramón Zulueta-Rodríguez
- Laboratorio de organismos benéficos. Facultad de Ciencias Agrícolas. Universidad Veracruzana. Gonzalo Aguirre Beltrán S/N. Zona Universitaria. CP 91000. Xalapa, Veracruz, México
| | - Wendy Sangabriel-Conde
- Laboratorio de organismos benéficos. Facultad de Ciencias Agrícolas. Universidad Veracruzana. Gonzalo Aguirre Beltrán S/N. Zona Universitaria. CP 91000. Xalapa, Veracruz, México ; Red de Ecología Funcional. Instituto de Ecología A. C. Camino Antiguo a Coatepec No. 351, Congregación del Haya, Xalapa 91070 Veracruz, México
| | - María Elena Mancera-López
- Instituto Politécnico Nacional (IPN). CIIDIR-Sinaloa. Departamento de Biotecnología Agrícola. Boulevard Juan de Dios Bátiz Paredes No. 250. CP 81101. AP280. Guasave, Sinaloa, México
| | - Simoneta Negrete-Yankelevich
- Red de Ecología Funcional. Instituto de Ecología A. C. Camino Antiguo a Coatepec No. 351, Congregación del Haya, Xalapa 91070 Veracruz, México
| | - Isabelle Barois
- Red de Ecología Funcional. Instituto de Ecología A. C. Camino Antiguo a Coatepec No. 351, Congregación del Haya, Xalapa 91070 Veracruz, México
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Songachan LS, Kayang H. Diversity of arbuscular mycorrhizal fungi associated withFlemingia vestitaBenth. ex Baker. Mycology 2013. [DOI: 10.1080/21501203.2013.809026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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