Fritz Oehl

Agroscope

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Danielle Karla Alves da Silva

Universidade Federal de Pernambuco

Leonor Costa Maia

Universidade Federal de Pernambuco

Paula Aguilera

Temuco Catholic University

Ewald Sieverding

University of Hohenheim

Emmanuel Frossard

ETH Zurich

Gladstone Alves da Silva

Universidade Federal de Pernambuco

Astrid Oberson

ETH Zurich

Fernando Borie

Temuco Catholic University

Pablo Cornejo

University of Talca

Andres Wiemken

University of Basel

Cooperative Institutions

Universidade Federal de Pernambuco

Agroscope

ETH Zurich

University of Zurich

Federal Office for Agriculture

University of Basel

École Polytechnique Fédérale de Lausanne

Universidad de La Frontera

Brazilian Agricultural Research Corporation

Universidade de São Paulo

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Community structure of arbuscular mycorrhizal fungi in fluvial and maritime dunes of Brazilian Northeast

Applied Soil Ecology (2016)

Daniele Magna Azevedo de Assis Fritz Oehl Camila Melo Gonçalves Danielle Karla Alves da Silva Gladstone Alves da Silva

Acaulospora

Sand dune stabilization

Glomus

10.1016/j.apsoil.2016.07.018

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Citations (17)

Arbuscular mycorrhizal fungi biodiversity: prospecting in Southern-Central zone of Chile. A review

Journal of soil science and plant nutrition (2016)

C. G. Castillo Fernando Borie Fritz Oehl Ewald Sieverding

The main factors affecting the diversity of arbuscular mycorrhizal fungi (AMF) are host plant, environmental characteristics and geographical location.A better understanding of the influence of land use changes on AMF abundance will help in improving their management, leading to improved plant productivity in soils, and will also be useful in designing more sustainable agronomic management practices.The aim of this work was to document the occurrence and diversity of AMF species in the Southern Central zone of Chile.This information has been generated by seven separate studies which provide the basis for discussion of the AMF species found in this zone.The work includes a bibliographic review of the records from croplands, grasslands and forests generated by collections made during the period 2004-2014 in Chile.Overall we recorded 21 genera and 66 species of Glomeromycota.This represents 24% of species of AMF known so far.Acaulospora represents 23% of all species and Glomus 20%.It is concluded that more studies are needed in this and other regions of Chile for a more comprehensive knowledge of the AMF diversity in the country.These biodiversity studies will help to define the ecology of these important soil microbiological resources.

Prospecting

Arbuscular mycorrhizal fungi

Mycorrhizal Fungi

Soil fungi

10.4067/s0718-95162016005000036

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Citations (47)

Impact of conservation tillage and organic farming on the diversity of arbuscular mycorrhizal fungi

Soil Biology and Biochemistry (2015)

Verena Säle Paula Aguilera Endre Laczkó Paul Mäder Alfred Berner

Plough

10.1016/j.soilbio.2015.02.005

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Citations (238)

Succession of arbuscular mycorrhizal communities in the foreland of the retreating Morteratsch glacier in the Central Alps

Pedobiologia (2011)

Fritz Oehl David J. Schneider Ewald Sieverding Conradin A. Burga

Plantago

Secondary succession

10.1016/j.pedobi.2011.07.006

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Citations (59)

Superior differentiation of arbuscular mycorrhizal fungal communities from till and no-till plots by morphological spore identification when compared to T-RFLP

Soil Biology and Biochemistry (2014)

Katharina S. Wetzel Gladstone Alves da Silva Undine Matczinski Fritz Oehl Thomas Fester

10.1016/j.soilbio.2014.01.033

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Citations (89)

Organic Phosphorus Mineralization Studies Using Isotopic Dilution Techniques

Soil Science Society of America Journal (2001)

Fritz Oehl Astrid Oberson Sokrat Sinaj Emmanuel Frossard

Soil organic P (P o ) mineralization is an important process in P cycling. No accurate method for its quantification is available because any mineralized inorganic P (P i ) may be rapidly sorbed onto the soil solid phase where it cannot be separated from already present P i A method for measuring soil P o mineralization is explored using isotopic dilution techniques under conditions of constant soil respiration rates. First, the specific activity (SA) as affected by physicochemical processes was extrapolated from an isotopic exchange kinetics batch experiment. Second, the SA was assessed during incubation after labeling soil with 33 PO 4 Lower SA measured during incubation than extrapolated from the batch experiment was attributed to the release of nonlabeled P i due to mineralization of nonlabeled P o In order to separate biological from biochemical mineralization processes, one set of samples was γ‐irradiated to stop the microbial activity while maintaining phosphatase activity. The γ‐irradiated soil revealed higher mineralization rates than the corresponding nonirradiated soil. This was explained by an increase of the amount of easily mineralizable P o derived from killed microbial cells by γ‐irradiation. Consequently, a gross, but overestimated, biochemical P mineralization can be assessed. In the nonirradiated soil, mineralization not only of nonlabeled, but also of recently synthesized labeled P o resulting from microbial turnover, may occur. Thus, in the nonirradiated soil, after several days a gross, biologically and biochemically mediated mineralization is increasingly underestimated. During the first 7 d, the mineralization rate in the nonirradiated soil was 1.7 mg P kg −1 d −1 , which is an amount approximately equivalent to soil solution P in this soil, indicating that soil P mineralization is a significant process in delivering available P i

Dilution

Isotope dilution

10.2136/sssaj2001.653780x

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Citations (116)

Unexpectedly high diversity of arbuscular mycorrhizal fungi in fertile Chernozem croplands in Central Europe

CATENA (2019)

Helmut Baltruschat Viviane Monique Santos Danielle Karla Alves da Silva Ingo Schellenberg Annette Deubel

Highly fertile soils are considered to harbor low diversity of arbuscular mycorrhizal fungi (AMF), since plants might not depend on the mycorrhizal symbiosis to efficiently assimilate soil nutrients. 'Black steppe soils' classified as Chernozems are counted among the soil types with highest natural fertility and productivity. However, information on AMF diversity from highly productive Chernozems used as croplands are extremely rare to non-existent. Our objective was to study the impact of soil tillage and fertilization intensity on AMF communities in a long-term field trial established on a silty-loamy Calcic Chernozem in the Magdeburger Börde (Central Europe). Samples were taken at harvest of maize that grew in a rotation with winter wheat, winter barley, winter oil seed rape and again winter wheat. AMF species were characterized by spore morphology. Astonishingly high spore densities (up to 41 spores g−1 soil) and species richness (19–33 species) of AMF were found in this highly productive Chernozem cropland, even under high-input conditions, which were, however, higher in reduced tillage than in regularly ploughed plots. AMF diversity decreased with increasing fertilizer input concerning N and P. These findings might re-stimulate the discussion about the significance of AM fungi in highly productive croplands, which was so far thought to be low. Several indicator AMF species were identified for reduced tillage (e.g. Ambispora fennica and Dominikia bernensis) or reduced fertilizer inputs (e.g. Dominikia aurea) or both (e.g. Diversispora celata and Scutellospora calospora), but only a few for tillage (e.g. Funneliformis fragilistratus and Pacispora dominikii). AMF indicators have to be, however, identified for each soil type and climatic condition separately, as they should be completely different from those species for instance in nutrient-poor or in acidic soils, in warmer or colder as well as in more humid or arid climates.

Chernozem

10.1016/j.catena.2019.104135

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Citations (49)

Kinetics of microbial phosphorus uptake in cultivated soils

Biology and Fertility of Soils (2001)

Fritz Oehl Astrid Oberson Mirjam Probst Andreas Fließbach Hans-Rudolf Roth

Cycling

TRACER

10.1007/s003740100362

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Citations (184)

Arbuscular mycorrhizal assemblages along contrasting Andean forests of Southern Chile

Journal of soil science and plant nutrition (2016)

César Marín Paula Aguilera Pablo Cornejo Roberto Godoy Fritz Oehl

Southern Chilean pristine temperate rainforests have been floristically stable during the Holocene, thus representing a pre-industrial baseline of forest ecology.Given this and its edaphic limitations, it is imperative to better understand these forests ecological patterns of mycorrhizal symbiosis.Therefore, here we compare the arbuscular mycorrhizal (AM) communities in three treeline Nothofagus pumilio contrasting plots of Chilean Andes (a volcano crater, pristine forest, and disturbed forest).The AM community assemblages were determined by morphological identification and spore counting, in three A horizon soil samples by plot.In the same nine soil samples, standard chemical analysis was performed.Eighteen AM species were described; Acaulospora was the most abundant genus.The forest plot had the highest AM species richness compared to the disturbed and crater plots.Interestingly, soils Olsen P (plant available phosphorus), pH, and Al+++ saturation similarly affected the AM assemblages.We suggest that some AM species could be specially adapted to extremely high Al saturation and extremely low plant available P conditions, as those experienced on Andean Nothofagus forests.These species may help initiate biological succession on highly disturbed ecosystems.We suggest that mycorrhizal fungi play a key role in seedling colonization of extreme environments such as the Andean treeline.

Arbuscular mycorrhizal fungi

10.4067/s0718-95162016005000065

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Citations (17)

Organic and conservation agriculture promote ecosystem multifunctionality

Science Advances (2021)

Raphaël Wittwer S. Franz Bender Kyle Hartman Sofia Hydbom Ruy A. A. Lima

Considering agroecosystem multifunctionality is essential for designing sustainable cropping systems.

Agroecosystem

Conservation Agriculture

10.1126/sciadv.abg6995

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Citations (193)