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Touré GPT, Koné AW, Nandjui J, Ebou AET, Otinga AN, Maïga AA, Kouadjo CGZ, Tiho S, Zézé A. Changes in arbuscular mycorrhizal fungal communities, mycorrhizal soil infectivity, and phosphorus availability under Chromolaena odorata (Asteraceae) invasions in a West-African forest-savanna ecotone. MYCORRHIZA 2023; 33:257-275. [PMID: 37289330 DOI: 10.1007/s00572-023-01113-9] [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: 02/01/2023] [Accepted: 05/17/2023] [Indexed: 06/09/2023]
Abstract
Substantial areas of agricultural lands in Sub-Saharan Africa have been invaded by Chromolaena odorata (Asteraceae), but the consequences for arbuscular mycorrhiza fungi (AMF) remains poorly understood. This study explores changes in diverse AMF community attributes and soil available phosphorus following C. odorata invasion in forest and savanna fragments in Côte d'Ivoire (West Africa). Invaded-forest (COF) and savanna (COS) sites were compared to adjacent natural forest (FOR) and savanna (SAV) fragments, respectively. Physico-chemical variables and AMF spore density parameters were determined for soil samples from 0-20 cm depth. An 18S ribosomal RNA metabarcoding analysis of AMF communities was conducted. In addition, cowpea (Vigna unguiculata) was grown on soils collected from these sites under greenhouse conditions for determination of soil mycorrhizal infectivity. Noticeable changes in the composition of AMF communities in C. odorata relative to nearby forest and savanna non-invaded sites were observed. AMF-specific richness in COS (47 species) was lower than that in SAV (57 species) while it was higher in COF (68 species) than in FOR (63 species). COF and COS differed in AMF specific composition (Dissimilarity index = 50.6%). Chromolaena odorata invasions resulted in increased relative abundances of the genera Claroideoglomus and Glomus in COF, a decreased relative abundance of Paraglomus in COS and decreased relative abundances of Ambispora in both COF and COS. Total and healthy spore densities, cowpea root colonization intensity and soil available P were all higher in invaded sites than in natural ecosystems. Remarkably, although these values were different in FOR and SAV, they turned out to be similar in COF and COS (4.6 and 4.2 total spores g-1 soil, 2.3 and 2.0 healthy spores g-1 soil, and 52.6 and 51.6% root colonization, respectively) suggesting a C. odorata-specific effect. These findings indicate that soil mycorrhizal potential and phosphorus availability have improved following C. odorata invasion.
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Affiliation(s)
- Guy-Pacome T Touré
- UR Gestion Durable des Sols, Laboratoire Géosciences, UFR Sciences de la Nature, Université Nangui Abrogoua, 02 BP 801, Abidjan 02, Côte d'Ivoire.
- Laboratoire de Biotechnologie Végétale et Microbienne, UMRI 28 Sciences Agronomique et Génie Rural, Institut National Polytechnique Félix Houphouët-Boigny, Yamoussoukro, BP 1093, Côte d'Ivoire.
| | - Armand W Koné
- UR Gestion Durable des Sols, Laboratoire Géosciences, UFR Sciences de la Nature, Université Nangui Abrogoua, 02 BP 801, Abidjan 02, Côte d'Ivoire
| | - Jacob Nandjui
- Laboratoire de Biotechnologie Végétale et Microbienne, UMRI 28 Sciences Agronomique et Génie Rural, Institut National Polytechnique Félix Houphouët-Boigny, Yamoussoukro, BP 1093, Côte d'Ivoire
| | - Anicet E T Ebou
- Laboratoire de Biotechnologie Végétale et Microbienne, UMRI 28 Sciences Agronomique et Génie Rural, Institut National Polytechnique Félix Houphouët-Boigny, Yamoussoukro, BP 1093, Côte d'Ivoire
- Laboratoire de Bioinformatique et de Biostatistique, UMRI 28 Sciences Agronomique et Génie Rural, Institut National Polytechnique Félix Houphouët-Boigny, BP 1093, Yamoussoukro, Côte d'Ivoire
| | - Abigael N Otinga
- Department of Soil Science, School of Agriculture and Biotechnology, University of Eldoret, P.O. Box 1125-30100, Eldoret, Kenya
| | - Assoumane A Maïga
- DER Sciences Sociales & Economiques, Institut Polytechnique Rural de Formation et de Recherche Appliquée (IPR/IFRA), Katibougou, Bamako, Mali
| | - Claude G Z Kouadjo
- Laboratoire Central de Biotechnologies (LCB), Centre National de Recherche Agronomique (CNRA), Abidjan, Côte d'Ivoire
| | - Seydou Tiho
- Laboratoire d'Ecologie et de Développement Durable (LEDD), UFR Sciences de la Nature, Université Nangui Abrogoua, 02 BP 801, Abidjan 02, Côte d'Ivoire
| | - Adolphe Zézé
- Laboratoire de Biotechnologie Végétale et Microbienne, UMRI 28 Sciences Agronomique et Génie Rural, Institut National Polytechnique Félix Houphouët-Boigny, Yamoussoukro, BP 1093, Côte d'Ivoire
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Faggioli VS, Covacevich F, Grilli G, Lorenzon C, Aimetta B, Sagadin M, Langarica-Fuentes A, Cabello MN. Environmental response of arbuscular mycorrhizal fungi under soybean cultivation at a regional scale. MYCORRHIZA 2022; 32:425-438. [PMID: 36207539 DOI: 10.1007/s00572-022-01093-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
Climate change, the shortage of fertilizers and reduced land for cultivation have drawn attention to the potential aid provided by soil-borne organisms. Arbuscular mycorrhizal fungi (AMF) offer a wide range of ecosystem benefits and hence, understanding the mechanisms that control AMF occurrence and maintenance is essential for resilient crop production. We conducted a survey of 123 soybean fields located across a 75,000-km2 area of Argentina to explore AMF community composition and to quantify the impact of soil, climate, and geographical distance on these key soil organisms. First, based upon morphological identification of spores, we compiled a list of the AMF species found in the studied area and identified Acaulospora scrobiculata and Glomus fuegianum as the most frequent species. G. fuegianum abundance was negatively correlated with precipitation seasonality and positively correlated with mean annual precipitation as well as mycorrhizal colonisation of soybean roots. Second, we observed that species richness was negatively correlated with soil P availability (Bray I), clay content and mean annual precipitation. Finally, based on partitioning variation analysis, we found that AMF exhibited spatial patterning at a broad scale. Therefore, we infer that geographical distance was positively associated with spore community composition heterogeneity across the region. Nevertheless, we highlight the importance of precipitation sensitivity of frequent species, overall AMF richness and community composition, revealing a crucial challenge to forthcoming agriculture considering an expected change in global climate patterns.
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Affiliation(s)
- Valeria Soledad Faggioli
- Instituto Nacional de Tecnología Agropecuaria, EEA Marcos Juárez, Ruta 12 km 36, 2580, Marcos Juárez, Córdoba, Argentina.
| | - Fernanda Covacevich
- Instituto de Investigaciones en Biodiversidad Y Biotecnología (CONICET)-Fundación Para Las Investigaciones Biológicas Aplicadas, Ruta 226 km 73.5, 7620, Balcarce, Argentina
| | - Gabriel Grilli
- FCEFyN (CONICET, Instituto Multidisciplinario de Biología Vegetal, Universidad Nacional de Córdoba), Vélez Sarsfield 1611, CC 495, Córdoba, Argentina
| | - Claudio Lorenzon
- Instituto Nacional de Tecnología Agropecuaria, EEA Marcos Juárez, Ruta 12 km 36, 2580, Marcos Juárez, Córdoba, Argentina
| | - Bethania Aimetta
- Instituto Nacional de Tecnología Agropecuaria, EEA Marcos Juárez, Ruta 12 km 36, 2580, Marcos Juárez, Córdoba, Argentina
| | - Monica Sagadin
- Centro de Investigación Agropecuaria (CIAP), Instituto Nacional de Tecnología Agropecuaria, Instituto de Fisiología Y Recursos Genéticos Vegetales (IFRGV), CONICET, Camino 60 Cuadras km, 51/2 C.P. 5119, Córdoba, Argentina
| | - Adrián Langarica-Fuentes
- Department of Geosciences, Eberhard-Karls-University Tübingen, Schnarrenbergstr. 94-96, 72076, Tübingen, Germany
| | - Marta Noemí Cabello
- Instituto Spegazzini (Facultad de Ciencias Naturales Y Museo, UNLP), Comisión de Investigaciones Científicas de La Prov. de Buenos Aires (CICPBA), Av 53 # 477, 1900, La Plata, Argentina
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Dry-Season Soil and Co-Cultivated Host Plants Enhanced Propagation of Arbuscular Mycorrhizal Fungal Spores from Sand Dune Vegetation in Trap Culture. J Fungi (Basel) 2022; 8:jof8101061. [PMID: 36294628 PMCID: PMC9604700 DOI: 10.3390/jof8101061] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 10/06/2022] [Accepted: 10/08/2022] [Indexed: 11/16/2022] Open
Abstract
The use of arbuscular mycorrhizal fungi (AMF) as biofertilizer in agriculture is a sustainable approach to fertilization. The first step in the production of AMF biofertilizer is inoculation of mycotrophic plants with a composite of soil and native plant roots, containing potentially viable AMF spores from natural habitats, to a trap culture. A single host plant or a consortium of host plants can be used to propagate AMF spores. However, the difference in the comparative efficiency of mono- and co-cultivated host plants used for the production of AMF spores and the maintenance of original AMF community composition has not been well elucidated. Here, we prepared trap culture with nutrient-poor soil from coastal sand dune vegetation collected during the dry season when the AMF spore density and relative abundance of Glomeromycota ITS2 sequences were significantly higher (p = <0.05) than in the wet season. The AMF communities in the soil were mainly composed of Glomus spp. Maize (Zea mays L.) and/or Sorghum (Sorghum bicolor (L.). Moench) were grown in trap cultures in the greenhouse. Our results demonstrated that co-cultivation of the host plants increased the production of AMF spores but, compared to mono-cultivation of host plants, did not better sustain the native AMF community compositions in the coastal sand dune soil. We propose that the co-cultivation of host plants in a trap culture broadens AMF-host plant compatibilities and thus sustains the symbiotic association of the natively diverse AMF. Therefore, the results of this study suggest that further research is needed to confirm whether the co-culturing of more than one host plant is as efficient a strategy as using a monoculture of a single host plant.
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Ambrosino ML, Velázquez MS, Ontivero E, Cabello MN, Lugo MA. Communities of Glomeromycota in the Argentine Arid Diagonal: An Approach from Their Ecological Role in Grassland Management and Use. Fungal Biol 2022. [DOI: 10.1007/978-3-031-12994-0_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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