Markus Kleber

X-ray tomography to incorporate redox conditions into soil carbon turnover models

Lead Institution

Oregon State University

Principal Investigator

Markus Kleber

Project type

Exploratory Research

We suggest that X-ray tomography can be successfully employed to generate numerical values of a) total pore space, b) pore geometry, c) pore size distribution and d) pore connectivity at relevant…

The Role of Anaerobic Microsites in Soil Carbon Storage

Lead Institution

Stanford University

Principal Investigator

Scott Fendorf

Project type

Large-Scale EMSL Research

The overarching goal of this project is to quantitatively place the importance of metabolic constraints in anaerobic microsites on the rate of soil organic matter (OM) oxidation, and thus advance our…

Organic N Turnover in Soil: An Overlooked Component of C Cycling

Lead Institution

Oregon State University

Principal Investigator

David Myrold

Project type

Large-Scale EMSL Research

It is now generally accepted that most of the organic matter in soils consists of materials that have been processed by the microbial community. Indeed, "necromass"--the remains of dead…

Microbial role in disintegration and formation of clay mineral-organic matter associations

Lead Institution

Miami University

Principal Investigator

Hailiang Dong

Project type

Exploratory Research

Recent study estimates that soil is one of the three largest reservoirs of organic matter (OM) on Earth. Soil carbon is a highly dynamic carbon repository, and its turnover time has a major impact on…

The role of phyllosilicate minerals in mediating the temperature sensitivity of enzymatic activity in soil organic matter transformations

Lead Institution

Oregon State University

Principal Investigator

Markus Kleber

Project type

Large-Scale EMSL Research

The underlying idea of this proposal is the assumption that temperature sensitivity in multiple component systems can be expressed by a non-linear combination of two component systems. Our main…

The role of protein - mineral interactions for protein cycling in soil and protein extraction efficiency from soils

Lead Institution

Oregon State University

Principal Investigator

Markus Kleber

Project type

Exploratory Research

We intend (1) to improve the ability to detect proteins in physical soil fractions, and (2) to discover preferences of exoenzymes for relevant classes of mineral components in soil. The latter will…

The role of protein-mineral interactions for protein oxidation and hydrolysis

Lead Institution

Oregon State University

Principal Investigator

Markus Kleber

Project type

Exploratory Research

We intend (1) to establish the molecular range of modifications to protein integrity and protein structure as such protein becomes associated with mineral surfaces and (2) to determine how mechanisms…

Using an engineered protein proxy to constrain protein- mineral interactions

Lead Institution

Oregon State University

Principal Investigator

Markus Kleber

Project type

Large-Scale EMSL Research

Objectives: This research intends to contribute to a better mechanistic understanding of protein-mineral attachment by answering questions such as: How do variations in the amino acid sequence of…

X-ray computed tomography to incorporate redox conditions into soil carbon turnover models

Lead Institution

Oregon State University

Principal Investigator

Markus Kleber

Project type

Limited Scope

We propose to parameterize the tendency of a given soil structure (structure = the combination of diffusive domains and the surrounding spatial void pattern within a given soil volume, Figure 1) to…

EMSL Science Overview

Markus Kleber

Projects

X-ray tomography to incorporate redox conditions into soil carbon turnover models

The Role of Anaerobic Microsites in Soil Carbon Storage

Organic N Turnover in Soil: An Overlooked Component of C Cycling

Microbial role in disintegration and formation of clay mineral-organic matter associations

The role of phyllosilicate minerals in mediating the temperature sensitivity of enzymatic activity in soil organic matter transformations

The role of protein - mineral interactions for protein cycling in soil and protein extraction efficiency from soils

The role of protein-mineral interactions for protein oxidation and hydrolysis

Using an engineered protein proxy to constrain protein- mineral interactions

X-ray computed tomography to incorporate redox conditions into soil carbon turnover models