Fungal spore diversity of arbuscular mycorrhizal fungi associated with spring wheat: effects of tillage

Schalamuk, Santiago; Velázquez, Silvana; Chidichimo, Hugo Oscar; Cabello, Marta Noemí

doi:10.3852/mycologia.98.1.16

Cited by 58 publications

(45 citation statements)

References 27 publications

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“…Except Sclerocystis and Entrophospora, all the genera were found in all age classes. The dominant genera at all stages of wheat crop development were Acaulospora, Glomus, and Scutellospora (Arpita et al 2012;Schalamuk et al 2006) and the dominant genera in tropical rainforest were Acaulospora and Glomus (Zhao et al 2003). The increased trend in spore density with increased age of exclosures is related to the low disturbance and high organic matter in old age exclosure (Burni and Ilahi 2004;Anwar and Jalaluddin 1991).…”

Section: Resultsmentioning

confidence: 99%

Exclosures restored the density and root colonization of arbuscular mycorrhizal fungi in Tigray, Northern Ethiopia

et al. 2017

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Introduction: Exclusion of grazing animals and tree plantations were among the methods used for the restoration of degraded lands in tropical semiarid areas. Exclosures can foster secondary forest succession by improving soil conditions and modifying microclimate for understory growth. This paper compared the arbuscular mycorrhizal fungi (AMF) spore density, root colonization of woody plants and soil chemical properties under exclosure with increasing age, and grazing land at different slope positions. Methods: The study was conducted in northern Ethiopia from 12 exclosure sites paired each with adjacent grazing land in total from 24 sites with four treatments replicated three times. In the entire study, 216 plots were examined of which 108 were in exclosures and 108 in communal grazing lands. There were four age classes and three slope positions in each of the land uses. Composite soil and root samples were collected using nested plots measuring 100m 2 from four sides of 1763 plants for spore enumeration and root colonization. Soils for chemical properties were collected from the four corners and center of 5 m × 5 m plots. Results: All the 61 woody plant species that belong to 41 families were colonized by AMF. Spore density and root colonization were significantly higher in exclosures as compared to grazing land and increased with increasing ages of exclosures. Foot slope had significantly higher spore density and root colonization than middle and upper slopes. Soil chemical properties were significantly higher in the exclosure, oldest age of exclosure, and foot slope position (except P). AMF spore density and root colonization were significantly positively correlated with soil chemical properties.

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Section: Resultsmentioning

confidence: 99%

Exclosures restored the density and root colonization of arbuscular mycorrhizal fungi in Tigray, Northern Ethiopia

et al. 2017

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“…Moreover, the observed differences in AMF communities between the CT and NT treatments resemble some species responses that depend on soil tillage practice that have been described before in the field. For instance, Funneliformis mosseae was increased in CT (Jansa et al 2002, Schalamuk et al 2006) as well as Glomus intraradices (Jansa et al 2002). In contrast, in this study and in another study (Borriello et al 2012), NT enhanced Diversosporaceae abundance.…”

Section: Discussionmentioning

confidence: 99%

Agricultural practices indirectly influence plant productivity and ecosystem services through effects on soil biota

Köhl

Oehl

Heijden

2014

Ecological Applications

122

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Abstract. It is well established that agricultural practices alter the composition and diversity of soil microbial communities. However, the impact of changing soil microbial communities on the functioning of the agroecosystems is still poorly understood. Earlier work showed that soil tillage drastically altered microbial community composition. Here we tested, using an experimental grassland (Lolium, Trifolium, Plantago) as a model system, whether soil microbial communities from conventionally tilled (CT) and non-tilled (NT) soils have different influences on plant productivity and nutrient acquisition. We specifically focus on arbuscular mycorrhizal fungi (AMF), as they are a group of beneficial soil fungi that can promote plant productivity and ecosystem functioning and are also strongly affected by tillage management.Soil microbial communities from CT and NT soils varied greatly in their effects on the grassland communities. Communities from CT soil increased overall biomass production more than soil communities from NT soil. This effect was mainly due to a significant growth promotion of Trifolium by CT microorganisms. In contrast to CT soil inoculum, NT soil inoculum increased plant phosphorus concentration and total plant P content, demonstrating that the soil microbial communities from NT fields enhance P uptake. Differences in AM fungal community composition resulting, for instance, in twofold greater hyphal length in NT soil communities when compared to CT, are the most likely explanation for the different plant responses to CT and NT soil inocula.A range of field studies have shown that plant P uptake increases when farmers change to conservation tillage or direct seeding. Our results indicate that this enhanced P uptake results from enhanced hyphal length and an altered AM fungal community. Our results further demonstrate that agricultural management practices indirectly influence ecosystem services and plant community structure through effects on soil biota.

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“…Thus, it is also essential to consider that the maintenance of natural mycorrhiza for each crop in a given edaphoclimatic situation is highly relevant to maintain the sustainability (García de Salamone et al, 2006b;Schalamuk et al, 2006). In this sense, several studies were performed to evaluate soybean mycorrhiza associations under controlled conditions with different types and doses of pesticides (Martinez et al, 1998;Venedekian et al, 1999).…”

Section: Crops Sequences and Microbial Diversitymentioning

confidence: 99%

Use of Soil Microorganisms to Improve Plant Growth and Ecosystem Sustainability

Salamone¹

2012

The Molecular Basis of Plant Genetic Diversity

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Fungal spore diversity of arbuscular mycorrhizal fungi associated with spring wheat: effects of tillage

Cited by 58 publications

References 27 publications

Exclosures restored the density and root colonization of arbuscular mycorrhizal fungi in Tigray, Northern Ethiopia

Exclosures restored the density and root colonization of arbuscular mycorrhizal fungi in Tigray, Northern Ethiopia

Agricultural practices indirectly influence plant productivity and ecosystem services through effects on soil biota

Use of Soil Microorganisms to Improve Plant Growth and Ecosystem Sustainability

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