Author's posts
May 07
Organelles that illuminate the origins of Trichomonas hydrogenosomes and Giardia mitosomes.
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May 05
The Impact of Exclusive Enteral Nutrition (EEN) on the Gut Microbiome in Crohn’s Disease: A Review.
Crohn’s disease (CD), a form of inflammatory bowel disease (IBD), is thought to arise from a complex interaction of genetics, the gut microbiome, and environmental factors, such as diet. There is clear evidence that dietary intervention is successful in the treatment of CD-exclusive enteral nutrition (EEN) is able to induce remission in up to 80% …
Apr 30
Mitochondrial genome evolution and a novel RNA editing system in deep-branching heteroloboseids.
Discoba (Excavata) is an evolutionarily important group of eukaryotes that includes Jakobida, with the most bacterial-like mitochondrial genomes known, and Euglenozoa, many of which have extensively fragmented mitochondrial genomes. However, little is known about the mitochondrial genomes of Heterolobosea, the third main group of Discoba. Here, we studied two heteroloboseids – an undescribed amoeba ‘BB2’ …
Mar 26
UniEuk: Time to Speak a Common Language in Protistology!
THE bewildering organismal and functional complexity of microbial eukaryotes has long fascinated protistologists but exceeded the capacity of this research community to comprehensively study it. Lacking the critical mass for a strong scientific discipline, protistologists remain largely divided into various sub-communities (protozoology versus phycology, aquatic versus terrestrial systems, fossil versus extant organisms, etc.), many of …
Mar 26
How Embryophytic is the Biosynthesis of Phenylpropanoids and their Derivatives in Streptophyte Algae?
The origin of land plants from algae is a long-standing question in evolutionary biology. It is becoming increasingly clear that many characters that were once assumed to be “embryophyte-specific” can in fact be found in their closest algal relatives, the streptophyte algae. One such case is the phenylpropanoid pathway. While biochemical data indicate that streptophyte …
Mar 25
How Embryophytic is the Biosynthesis of Phenylpropanoids and their Derivatives in Streptophyte Algae?
The origin of land plants from algae is a long-standing question in evolutionary biology. It is becoming increasingly clear that many characters that were once assumed to be ’embryophyte specific’ can in fact be found in their closest algal relatives, the streptophyte algae. One such case is the phenylpropanoid pathway. While biochemical data indicate that streptophyte algae harbor lignin-like components, the phenylpropanoid core pathway, which serves as the backbone of lignin biosynthesis, has…
Mar 22
Revisiting the evolutionary history and roles of protein phosphatases with Kelch-like domains in plants.
Protein phosphatases with Kelch-like domains (PPKL) are members of the phosphoprotein phosphatases family present only in plants and alveolates. PPKL have been described as positive effectors of brassinosteroid (BR) signaling in plants. Most of the evidence supporting this role has been gathered using one of the four homologs in Arabidopsis (Arabidopsis thaliana), brassinosteroid-insensitive1 suppressor (BSU1). …
Mar 22
Morphological and molecular characterization of a new species of Stephanopogon, Stephanopogon pattersoni n. sp.
Stephanopogon is a taxon of multiciliated protists that is now known to belong to Heterolobosea. Small subunit ribosomal DNA (SSU rDNA) phylogenies indicate that Stephanopogon is closely related to or descended from Percolomonas, a small tetraflagellate with a different feeding structure, thus these morphologically dissimilar taxa are of ongoing evolutionary interest. A new strain of …
Mar 22
Morphological and molecular characterisation of Notosolenus urceolatus Larsen and Patterson 1990, a member of an understudied deep-branching euglenid group (petalomonads).
Petalomonads are particularly important for understanding the early evolution of euglenids, but are arguably the least studied major group within this taxon. We have established a culture of the biflagellate petalomonad Notosolenus urceolatus, and conducted electron microscopy observations and molecular phylogenetic analysis. Notosolenus urceolatus has eight pellicular strips bordered by grooves and underlain by close-set …
Mar 22
Which is more important for classifying microbial communities: who’s there or what they can do?
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