M. Gralka

Vitamin auxotrophies shape microbial community assembly in the ocean

The paper shows that vitamin auxotrophies and lysis-mediated cross-feeding shape microbial community assembly in coastal marine environments.

Fundamental metabolic strategies of heterotrophic bacteria

This study identifies a single metabolic strategy axis for heterotrophic bacteria, linking it to genomic features and carbon source preferences.

A Genome-Scale Metabolic Model of Marine Heterotroph Vibrio splendidus sp. 1A01

The paper constructs a genome-scale metabolic model for Vibrio splendidus sp. 1A01 to study its metabolism and addresses challenges in modeling marine microorganisms.

Viral infection switches the balance between bacterial and eukaryotic recyclers of organic matter during algal blooms

The paper investigates how viral infection affects carbon cycling in algal blooms by altering the balance between bacterial and eukaryotic organic matter recyclers.

Public good exploitation in natural bacterioplankton communities

The paper develops a genomic approach to identify public good exploiters in marine microbial communities degrading chitin, showing their activity and potential impact on polysaccharide degradation.

The mutability of demographic noise in microbial range expansions

This study measures how single gene deletions in E. coli affect demographic noise during range expansions, finding that mutations can reduce noise and enhance beneficial mutation establishment.

Context-dependent dynamics lead to the assembly of functionally distinct pitcher-plant microbiomes

The paper shows that early community states influence the diversity and function of pitcher-plant microbiomes in synthetic microcosms, with compositional differences correlating with functional differences.

Environmental disorder can tip the population genetics of range expansions

The paper shows environmental disorder reduces selection efficacy in bacterial range expansions by pinning the expansion front, increasing genetic drift.

Collective motion conceals fitness differences in crowded cellular populations

The paper shows that collective motion in crowded yeast populations masks fitness differences, allowing deleterious mutations to persist and increase their chance of evolutionary rescue.

Mechanical interactions in bacterial colonies and the surfing probability of beneficial mutations

The paper models mechanical interactions in bacterial colonies and shows how physical properties affect the surfing probability of beneficial mutations.