Orit Sivan

Chemical Crosstalk between the Common Soil Bacteria Pseudomonas chlororaphis and Bacillus subtilis

This study investigates how Pseudomonas chlororaphis produces PCN, which alters the morphology and signaling of Bacillus subtilis without affecting its growth.

Physiological trade-offs drive the archaeal dominance and carbon turnover in deep subsurface

The paper shows archaea, specifically Bathyarchaeia, dominate deep sediments by prioritizing maintenance over growth, leading to long-term organic carbon preservation.

Modeling the Controls on Microbial Iron and Manganese Reduction in Methanic Sediments

The paper models thermodynamic and kinetic controls on microbial iron and manganese reduction in methanic sediments, finding that oxide type, not concentration, primarily influences bioreaction rates.

Integrated Approach to Investigate Magnetite Cycle in Marine Methanic Sediments

The paper investigates magnetite dynamics in marine methanic sediments, finding net magnetite precipitation in the middle zone and highlighting the role of microbial activity and redox conditions in shaping magnetic signals.

Complex nitrogen redox couplings control methane emissions from Arctic upland yedoma taliks

This study examines methane and nitrogen oxide emissions from thawing Arctic yedoma permafrost, revealing seasonal microbial processes that influence greenhouse gas release.