Patrick J. Keeling

This study uses FLIM to reveal the complexity of photosymbiosis in Retaria by distinguishing chlorophyll autofluorescence from FISH signals in environmental samples.

This study identifies the phylogenetic position of Brandtodinium nutricula and shows its free-living abundance in the ocean, challenging previous assumptions about its symbiotic exclusivity.

The paper uses single-cell genomics and fluorescence microscopy to study plastids in marine centrohelids, finding evidence of permanent plastid integration and vertical transmission.

This study presents the first global survey of coral-associated microbial eukaryotes, revealing greater diversity than the coral bacterial microbiome and identifying new lineages and potential pathogens.

The paper identifies a broad, undescribed diversity of chromerid algae in marine and freshwater microbialites, expanding their known ecological range beyond coral associations.

The paper describes the regulated development of cannibalistic supergiant cells in a ciliate, showing they are distinct, transcriptionally unique stages triggered by internal and external factors.

The paper analyzes mitochondrial genomes of orphan eukaryotic lineages to clarify their phylogenetic positions and evolutionary relationships.

The paper uses single-cell transcriptomes to identify five new superfamily-level groups of marine eugregarine parasites, expanding phylogenomic data and classification.

The paper identifies fireworms as a potential vector for coral-infecting apicomplexans by showing they host distinct corallicolid sequences.

Pseudofinder identifies pseudogenes in prokaryotic genomes, detecting both degraded and newly formed pseudogenes, as well as genes under relaxed selection.

This paper develops a curated reference database for apicomplexan SSU rRNA sequences and analyzes their distribution across diverse environments, revealing significant molecular diversity, especially in marine settings.

The paper identifies a coral-infecting apicomplexan, corallicola, which retains chlorophyll biosynthesis genes in its non-photosynthetic plastid, suggesting it is an evolutionary intermediate between free-living and parasitic apicomplexans.