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de Souza TAF, de Lucena EO, Nascimento GDS, da Silva LJR. Biochemical characterization and mycorrhizal fungal community of plant species in the Brazilian seasonal dry forest. J Basic Microbiol 2023; 63:1242-1253. [PMID: 37507826 DOI: 10.1002/jobm.202300269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/03/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023]
Abstract
Invasive alien plant species (IAPS) have the ability to change the biochemical properties and the arbuscular mycorrhizal fungal (AMF) community structure in their rhizosphere. Organic acids, microbial activity, and AMF play a key role in the invader's spread and also has interactions with the soil chemical factors. Our aim here was to assess the rhizosphere's biochemical factors, AMF community composition, and soil chemical properties associated with Cryptostegia madagascariensis (IAPS) and Mimosa tenuiflora (endemic plant species) from the Brazilian Seasonal Dry Forest. The highest values of total glomalin (5.87 mg g-1 soil), root colonization (54.5%), oxalic and malic acids (84.21 and 3.01 μmol g-1 , respectively), microbial biomass C (mg kg-1 ), Na+ (0.080 cmolc kg-1 ), Ca2+ (7.04 cmolc kg-1 ), and soil organic carbon (4.59 g kg-1 ) were found in the rhizosphere of C. madagascariensis. We found dissimilarities on AMF community structure considering the studied plant species: (i) Racocetra coralloidea, Dentiscutata heterogama, Dentiscutata cerradensis, Gigaspora decipiens, and AMF's richness were highly correlated with the rhizosphere of M. tenuiflora; and (ii). The rhizosphere of C. madagascariensis was highly correlated with the abundance of Claroideoglomus etunicatum, Rhizoglomus aggregatum, Funneliformis mosseae, and Funneliformis geosporum. The results of our study highlight the importance of considering C. madagascariensis as potential hosts for AMF species from Glomerales, and a potential plant species that increase the bioavailability of exchangeable Na and Ca at semi-arid conditions.
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Affiliation(s)
- Tancredo Augusto Feitosa de Souza
- Postgraduate Program in Soil Science, Department of Soils and Rural Engineering, Federal University of Paraiba, Areia, Paraiba, Brazil
- Department of Life Sciences, Centre for Functional Ecology, University of Coimbra, Coimbra, Portugal
| | - Edjane Oliveira de Lucena
- Postgraduate Program in Soil Science, Department of Soils and Rural Engineering, Federal University of Paraiba, Areia, Paraiba, Brazil
| | - Gislaine Dos Santos Nascimento
- Postgraduate Program in Soil and Water Management, Federal Rural University of the Semi-Arid, Mossoró, Rio Grande do Norte, Brazil
| | - Lucas Jónatan Rodrigues da Silva
- Postgraduate Program in Agronomy, Department of Soil and Environment Resources, College of Agronomic Sciences, São Paulo State University, Botucatu, São Paulo, Brazil
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Silva AMM, Feiler HP, Lacerda-Júnior GV, Fernandes-Júnior PI, de Tarso Aidar S, de Araújo VAVP, Matteoli FP, de Araújo Pereira AP, de Melo IS, Cardoso EJBN. Arbuscular mycorrhizal fungi associated with the rhizosphere of an endemic terrestrial bromeliad and a grass in the Brazilian neotropical dry forest. Braz J Microbiol 2023; 54:1955-1967. [PMID: 37410249 PMCID: PMC10485230 DOI: 10.1007/s42770-023-01058-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 06/19/2023] [Indexed: 07/07/2023] Open
Abstract
Arbuscular mycorrhizal fungi form symbiotic associations with 80-90% of all known plants, allowing the fungi to acquire plant-synthesized carbon, and confer an increased capacity for nutrient uptake by plants, improving tolerance to abiotic and biotic stresses. We aimed at characterizing the mycorrhizal community in the rhizosphere of Neoglaziovia variegata (so-called `caroa`) and Tripogonella spicata (so-called resurrection plant), using high-throughput sequencing of the partial 18S rRNA gene. Both plants are currently undergoing a bioprospecting program to find microbes with the potential of helping plants tolerate water stress. Sampling was carried out in the Caatinga biome, a neotropical dry forest, located in northeastern Brazil. Illumina MiSeq sequencing of 37 rhizosphere samples (19 for N. variegata and 18 for T. spicata) revealed a distinct mycorrhizal community between the studied plants. According to alpha diversity analyses, T. spicata showed the highest richness and diversity based on the Observed ASVs and the Shannon index, respectively. On the other hand, N. variegata showed higher modularity of the mycorrhizal network compared to T. spicata. The four most abundant genera found (higher than 10%) were Glomus, Gigaspora, Acaulospora, and Scutellospora, with Glomus being the most abundant in both plants. Nonetheless, Gigaspora, Diversispora, and Ambispora were found only in the rhizosphere of N. variegata, whilst Scutellospora, Paraglomus, and Archaeospora were exclusive to the rhizosphere of T. spicata. Therefore, the community of arbuscular mycorrhizal fungi of the rhizosphere of each plant encompasses a unique composition, structure and modularity, which can differentially assist them in the hostile environment.
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Affiliation(s)
- Antonio Marcos Miranda Silva
- “Luiz de Queiroz” College of Agriculture, Soil Science Department, University of São Paulo, Piracicaba, São Paulo 13418-900 Brazil
| | | | | | | | - Saulo de Tarso Aidar
- Brazilian Agricultural Research Corporation, Embrapa Semiárido, Petrolina, , Pernambuco 56302-970 Brazil
| | | | - Filipe Pereira Matteoli
- Faculty of Sciences, Department of Biological Sciences, Laboratory of Microbial Bioinformatics, São Paulo State University, Bauru, 17033-360 Brazil
| | | | - Itamar Soares de Melo
- Brazilian Agricultural Research Corporation, Embrapa Meio Ambiente, Jaguariúna, São Paulo 13918-110 Brazil
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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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Rodrigues LA, da Silva DKA, Yano-Melo AM. Arbuscular Mycorrhizal Fungal Assemblages in Conservation Unit of Atlantic Forest Areas Under Native Vegetation and Natural Regeneration. MICROBIAL ECOLOGY 2021; 82:122-134. [PMID: 33410937 DOI: 10.1007/s00248-020-01653-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 11/25/2020] [Indexed: 06/12/2023]
Abstract
Arbuscular mycorrhizal fungi (AMF) play an important role in the dynamic of plant community in the south American Atlantic Rainforest biome. Even in protected areas, this biome is under several anthropic impacts, which can cause shifts in the soil microbiota, including AMF. This study aimed to determine the structure and composition of AMF community in areas of native Atlantic Forest and in natural regeneration and to identify which abiotic factors are influencing this community in these areas. Soil samples were collected at Monte Pascoal National and Historical Park, in Southern Bahia, in native and natural regeneration areas of Atlantic Forest in two seasons (rainy and dry). Greater number of glomerospores and richness and diversity of AMF were found in the area under regeneration, with differences between seasons being observed only for the number of glomerospores. Seventy-seven species of AMF were recorded, considering all areas and seasons, with Acaulospora and Glomus being the most representative genera. Greater abundance of species of the genera Acaulospora, Claroideoglomus, and Septoglomus was found in the regeneration area. The AMF community differed between the study areas, but not between seasons, with soil attributes (pH, K, Al, Mg, m, and clay) structuring factors for this difference in the AMF community. Atlantic Forest areas in natural regeneration and the soil edaphic factors provide changes in the structure and composition of the AMF community, increasing the richness and diversity of these fungi in conservation units.
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Affiliation(s)
- Lilian Araujo Rodrigues
- Programa de Pós-Graduação em Biologia de Fungos, Departamento de Micologia, Universidade Federal de Pernambuco, Av. da Engenharia, s/n, Cidade Universitária, Recife, PE, 50740-600, Brazil
| | - Danielle Karla Alves da Silva
- Programa de Pós-Graduação em Ecologia e Monitoramento Ambiental, Centro de Ciências Aplicadas e Educação, Departamento de Engenharia e Meio Ambiente, Universidade Federal da Paraíba, Av. Santa Elisabete, 160, Rio Tinto, PB, 58297-000, Brazil.
| | - Adriana Mayumi Yano-Melo
- Laboratório de Microbiologia, Campus de Ciências Agrárias, Universidade Federal do Vale do São Francisco, Rodovia BR 407, Km 12, Lote 543, Projeto de Irrigação Nilo Coelho, s/n, "C1", Petrolina, PE, 56300-990, Brazil
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Global AM fungi are dominating mycorrhizal communities in a tropical premontane dry forest in Laipuna, South Ecuador. Mycol Prog 2021. [DOI: 10.1007/s11557-021-01699-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractTropical dry forests are an intricate ecosystem with special adaptations to periods of drought. Arbuscular mycorrhizal fungi (AMF) are essential for plant survival in all terrestrial ecosystems but might be of even greater importance in dry forests as plant growth is limited due to nutrient and water deficiency during the dry season. Tropical dry forests in Ecuador are highly endangered, but studies about AMF communities are scarce. We investigated the AMF community of a premontane semi-deciduous dry forest in South Ecuador during the dry season. We estimated AMF diversity, distribution, and composition of the study site based on operational taxonomic units (OTUs) and compared the results to those from the tropical montane rainforest and páramo in South Ecuador. OTU delimitation was based on part of the small ribosomal subunit obtained by cloning and Sanger sequencing. Nearly all OTUs were Glomeraceae. The four frequent OTUs were Glomus, and comparison with the MaarjAM database revealed these to be globally distributed with a wide range of ecological adaptations. Several OTUs are shared with virtual taxa from dry forests in Africa. Ordination analysis of AMF communities from the tropical dry and montane rainforests in South Ecuador revealed a unique AMF community in the dry forest with only few overlapping OTUs. Most OTUs that were found in both dry and rainforests and on the two continents were globally distributed Glomus.
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Rincón C, Droh G, Villard L, Masclaux FG, N'guetta A, Zeze A, Sanders IR. Hierarchical spatial sampling reveals factors influencing arbuscular mycorrhizal fungus diversity in Côte d'Ivoire cocoa plantations. MYCORRHIZA 2021; 31:289-300. [PMID: 33638731 PMCID: PMC8068719 DOI: 10.1007/s00572-020-01019-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 12/30/2020] [Indexed: 06/12/2023]
Abstract
While many molecular studies have documented arbuscular mycorrhizal fungi (AMF) communities in temperate ecosystems, very few studies exist in which molecular techniques have been used to study tropical AMF communities. Understanding the composition of AMF communities in tropical areas gains special relevance as crop productivity in typically low fertility tropical soils can be improved with the use of AMF. We used a hierarchical sampling approach in which we sampled soil from cocoa (Theobroma cacao L.) plantations nested in localities, and in which localities were nested within each of three regions of Côte d'Ivoire. This sampling strategy, combined with 18S rRNA gene sequencing and a dedicated de novo OTU-picking model, allowed us to study AMF community composition and how it is influenced at different geographical scales and across environmental gradients. Several factors, including pH, influenced overall AMF alpha diversity and differential abundance of specific taxa and families of the Glomeromycotina. Assemblages and diversity metrics at the local scale did not reliably predict those at regional scales. The amount of variation explained by soil, climate, and geography variables left a large proportion of the variance to be explained by other processes, likely happening at smaller scales than the ones considered in this study. Gaining a better understanding of processes involved in shaping tropical AMF community composition and AMF establishment are much needed and could allow for the development of sustainable, productive tropical agroecosystems.
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Affiliation(s)
- Cristian Rincón
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
| | - Germain Droh
- Laboratoire de Génétique, UFR Biosciences, Université Félix Houphouët-Boigny, Abidjan, Côte d'Ivoire
| | - Lucas Villard
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
| | - Frédéric G Masclaux
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
| | - Assanvo N'guetta
- Laboratoire de Génétique, UFR Biosciences, Université Félix Houphouët-Boigny, Abidjan, Côte d'Ivoire
| | - Adolphe Zeze
- Laboratoire de Biotechnologies Végétale Et Microbienne, Unité Mixte de Recherche Et D'Innovation en Sciences Agronomiques Et Génie Rual, Institut National Polytechnique Félix Houphouet-Boigny, Yamoussoukro, Côte d'Ivoire
| | - Ian R Sanders
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland.
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Nanoglomus plukenetiae, a new fungus from Peru, and a key to small-spored Glomeraceae species, including three new genera in the “Dominikia complex/clades”. Mycol Prog 2019. [DOI: 10.1007/s11557-019-01522-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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