Microbial iron reduction on Earth and Mars

摘要: iv Lay Summary vi Chapter 1: Introduction 1 1.1 Thesis scope and objectives 1.2 outline 2 2: Literature review 4 2.1 Microbial iron reduction 2.1.1 Electron donors acceptors known to support MIR 10 2.1.2 Biogeography growth parameters of on Earth 18 2.2 Habitable Mars? 20 2.3 The feasibility Mars 24 2.3.1 Sources electron 2.3.2 terminal 29 2.4 Relevant other work 31 2.5 knowledge gap 33 3: General methodology 35 3.1 Preparation anaerobic medium 3.2 Anaerobic techniques 3.3 Determination concentration 36 3.4 2-line ferrihydrite 3.5 Cell enumerations 37 3.6 DNA extraction 38 3.7 16S rRNA sequencing data analysis 39 3.8 PCR amplification 40 4: in Mars-relevant environments 42 4.