Phosphorus solubilization by microorganisms and plants at different stages of soil development

DFG SP 1389/5-1 im SPP 1803

From 01/2016 to 12/2019

Principal Investigator: Marie Spohn
Staff: Emanuel Brucker

Phosphorus (P) solubilization in soils is a crucial process for ecosystem nutrition and ecosystem development. Previous research on biogenic P solubilization focused on single microbial strains, but little is known about P solubilization as a process of soil formation and ecosystem development. The general objective of the project is to gain understanding on how microbial and plant mediated P solubilization and silicate weathering influence the formation of soil and its P forms. For this purpose, we will quantify the rates of P solubilization and of silicate weathering in a sequence of soils on granites of different stages of development in the coastal range of Chile. We aim at determining mechanisms of microbial P solubilization such as the release of protons and organic acid anions, the factors controlling P solubilization, and the abundance of P-solubilizing bacteria at different stages of soil development. The rates of P solubilization and silicate weathering will be related to soil P fractions (Hedley fractions) that have formed during pedogenesis. We will test the hypothesis that mechanisms, rates, controlling factors and abundances of P-solubilizing bacteria strongly change during soil development. The main value of the project will be that it relates microbial P solubilization taking place at a time scale of several weeks to the development of soils and P fractions taking place over hundreds of years.

DFG SP 1389/5-1 im SPP 1803: Phosphor-Solubilisierung durch Mikroorganismen und Pflanzen in unterschiedlichen Stadien der Bodenbildung

 

DFG funding ID 280611154



Homepage: https://esdynamics.geo.uni-tuebingen.de/earthshape/index.php?id=129

Upcoming ...

Fr. 2020-07-10 now
12th BayCEER Workshop 2020: "Call for Abstracts" is open
BayCEER Colloquium:
Th. 2020-07-16
Verschoben auf WS 2020/21! Investigating communal pathogen defense and its role in social evolution
Th. 2020-10-22
Extreme redox oscillations in freshwater re-flooded acid sulfate soil wetlands: Effects on Fe, S, and trace metals geochemical behavior
Ecological-Botanical Garden:
We. 2020-07-01 now
Alle Termine im Juli 2020 entfallen!
Fr. 2020-07-03 now
Gewächshäuser ab sofort wieder geöffnet!
BayCEER Blog
13.01.2020
Why Science Communication?
24.05.2019
Stoichiometric controls of C and N cycling
07.05.2019
Flying halfway across the globe to dig in the dirt – a research stay in Bloomington, USA
07.05.2019
EGU – interesting research and free coffee
RSS Blog as RSS Feed
Weather research site
Luftdruck (356m): 977.0 hPa
Lufttemperatur: 18.1 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: <1 h/d
Wind (Höhe 17m): 5.9 km/h
Wind (Max.): 14.8 km/h
Windrichtung: N

...more
Globalstrahlung: 933 W/m²
Lufttemperatur: 14.3 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: 1 h/d
Wind (Höhe 32m): 8.5 km/h

...more
This site makes use of cookies More information