Journal: Soil Biology

Abbreviation

Soil biol.

Publisher

Springer

Journal Volumes

ISSN

1613-3382

Description

Filters

2006 - 200932010 - 20116
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Publications 1 - 9 of 9
  • Phosphorus in action
    Item type: Edited Volume
    (2011)
    Soil Biology
  • Characterization of phosphorus forms in soil microorganisms
    Item type: Book Chapter
    Bünemann, Else K.; Prusisz, Bartlomiej; Ehlers, Knut (2011)
    Soil Biology ~ Phosphorus in Action
    Characterization of phosphorus (P) forms in soil microorganisms is a novel approach to reach a better understanding of the role of bacteria and fungi as sink and source of P. After an overview of methods for cultivation of microorganisms, extraction from soil, and chemical analysis, two case studies are presented, one on pure cultures and one on microbial cells extracted from soil. Analysis of pure cultures of bacteria and fungi by 31P NMR suggested a predominantly fungal origin of pyrophosphate, polyphosphate, and phosphonates in soils. The first report of P forms in microbial cells extracted from soil showed similar concentrations of total P, P in phospholipids, and DNA per cell as found in aquatic microorganisms, but lower concentrations of RNA. Cell P concentrations tended to increase upon carbon addition to a tropical Ferralsol, whereas sole or additional P amendment had no significant effect. The scope and limits of this new approach are discussed.
  • Biodiversity of Fungal Root-Endophyte Communities and Populations, in Particular of the Dark Septate Endophyte Phialocephala fortinii s. l.
    Item type: Book Chapter
    Sieber, Thomas Niklaus; Grünig, Christoph R. (2006)
    Soil Biology ~ Microbial root endophytes
  • Microbial root endophytes
    Item type: Edited Volume
    (2006)
    Soil Biology
  • Potential of soil beneficial micro-organisms for slash-and-burn agriculture in the humid forest zone of Sub-Saharan Africa
    Item type: Book Chapter
    Nwaga, Dieudonné; Jansa, Jan; Abosslo Angue, Monique; et al. (2010)
    Soil Biology ~ Soil Biology and Agriculture in the Tropics
  • Phosphorus and sulphur cycling in terrestrial ecosystems
    Item type: Book Chapter
    Bünemann, Else K.; Condron, Leo M. (2007)
    Soil Biology ~ Nutrient cycling in terrestrial ecosystems
  • Role of mycorrhizal symbioses in phosphorus cycling
    Item type: Book Chapter
    Jansa, Jan; Finlay, Roger; Wallander, Håkan; et al. (2011)
    Soil Biology ~ Phosphorus in Action
    Roots of most terrestrial plants are colonized by symbiotic mycorrhizal fungi. These fungi confer various benefits to their hosts under phosphorus (P) limitation and other stress conditions. The most widespread are the arbuscular mycorrhizal (AM) and ectomycorrhizal (ECM) types. Many mycorrhizal fungi can efficiently take up P from the soil solution and transport it to the plants. This plant-directed P flux is fueled by a net flux of carbon in the opposite direction. Evidence exists that some ECM and other mycorrhizal fungi also exude large amounts of lytic enzymes and organic acids, which in turn release recalcitrant organic and mineral P into the soil. These processes can bypass organic P mineralization by free-living decomposers, effectively short-circuiting soil–plant P cycling. In addition, specific prokaryotes associate with mycorrhizal fungal hyphae, potentially enhancing access to recalcitrant P forms. This is particularly important for the AM fungi that seem to have little direct access to those P forms. The consequences of mycorrhizal diversity for soil–plant P cycling and the impact of human activities on it are briefly outlined.
  • The use of tracers to investigate phosphate cycling in soil-plant systems
    Item type: Book Chapter
    Frossard, Emmanuel; Achat, David L.; Bernasconi, Stefano M.; et al. (2011)
    Soil Biology ~ Phosphorus in Action
    The use of tracers is relevant to study the transformations of phosphorus (P) in the soil–plant system because (a) only a small fraction of the total soil P is rapidly circulating in this system, (b) P participates in many reactions in the soil, some occurring within a few seconds, others over years, and (c) P is distributed in many pools in the soil. This review presents the use of P radioisotopes (a) to probe pools and to study P transformations in soils, (b) to trace the fate of fertilizers in soil–plant systems, and (c) to assess the foraging strategies of arbuscular mycorrhizal fungi for P. Finally, we discuss the potential of analyzing the oxygen isotopes bound to P to study soil P dynamics and the research needed to achieve this aim.
  • Management impacts on biological phosphorus cycling in cropped soils
    Item type: Book Chapter
    Oberson, Astrid; Pypers, Pieter; Bünemann, Else K.; et al. (2011)
    Soil Biology ~ Phosphorus in action : biological processes in soil phosphorus cycling
Publications 1 - 9 of 9