Legacies of consecutive summer droughts on soil-borne plant parasitic protists (Oomycota: Stramenopila and Phytomyxea: Rhizaria) and protistan consumers (Cercozoa: Rhizaria) along an experimental plant diversity gradient. [PDF]
New PhytolSummary Increasing frequencies of severe summer droughts and plant diversity loss disrupt ecosystem functioning and stability of European grasslands. Understanding how these factors interact with pathogens is crucial. We investigated the effects of plant diversity and repeated summer drought on soil‐borne parasites within a grassland biodiversity ...
Solbach MD +8 more
europepmc +4 more sources
Composite calcite and opal test in Foraminifera (Rhizaria) [PDF]
BiogeosciencesForaminifera are unicellular eukaryotes known to have a shell, called a test, generally made of secreted calcite (CaCO3). For the first time, we report a foraminifera with a composite calcite–opal test in the cosmopolitan and well-studied benthic species
J. Richirt +9 more
doaj +4 more sources
Micro- and nanometric characterization of the celestite skeleton of acantharian species (Radiolaria, Rhizaria) [PDF]
Scientific Reports, 2022 We clarified the specific micrometric arrangement and nanometric structure of the radiolarian crystalline spines that are not a simple single crystal. A body of the celestite (SrSO4) skeleton of acantharian Acanthometra cf.
Rina Fujimaki +7 more
doaj +4 more sources
Evolution of Rhizaria: new insights from phylogenomic analysis of uncultivated protists [PDF]
BMC Evolutionary Biology, 2010 Background Recent phylogenomic analyses have revolutionized our view of eukaryote evolution by revealing unexpected relationships between and within the eukaryotic supergroups.
Bulman Simon +7 more
doaj +7 more sources
A Novel Protistan Trait Database Reveals Functional Redundancy and Complementarity in Terrestrial Protists (Amoebozoa and Rhizaria). [PDF]
Mol Ecol ResourABSTRACT The inclusion of functional traits of protists in environmental sequencing surveys, in addition to the traditional taxonomic framework, is essential for a better understanding of their roles and impacts on ecosystem processes. We provide a database of functional traits for a widespread and important clade of protists—the Amoebozoa—based on ...
Freudenthal J +3 more
europepmc +2 more sources
Reassessing Interkingdom Horizontal Gene Transfer Suggests Limited Influence on Plant Genomes. [PDF]
Ecol EvolHorizontal gene transfer (HGT) has been proposed as an important contributor to plant genome evolution, with hundreds of candidate genes reported across kingdoms. By reanalyzing published cases with updated genomic data and phylogenetic reconstructions, we found that only 29.3% remain consistent with interkingdom HGT.
Aguirre-Carvajal K, Armijos-Jaramillo V.
europepmc +2 more sources
The Vampyrellid Amoebae (Vampyrellida, Rhizaria)
Protist, 2022 The Vampyrellida (Endomyxa, Rhizaria) is a group of free-living, predatory amoebae, which is most closely related to the Phytomyxea (plasmodiophorids and phagomyxids). It encompasses about 50 credibly described species that have a characteristic life history with the regular alternation of trophic amoebae and immobile digestive cysts.
Sebastian Hess, Andreas Suthaus
openaire +2 more sources
Impact on Plankton Communities Following Abandonment of Rice Cultivation and Biotope Creation. [PDF]
Ecol EvolThis study clarified changes in plankton communities during the first year of fallow in long‐term cultivated paddy fields in Kyoto. These fields were in a fallow state, with no planting, cultivation, or fertilization occurring. When water was introduced at the same time of year as during active use and the fields were converted into biotopes, diversity
Nagano M, Teramoto R.
europepmc +2 more sources
Monophyly of Rhizaria and Multigene Phylogeny of Unicellular Bikonts [PDF]
Molecular Biology and Evolution, 2006 Reconstructing a global phylogeny of eukaryotes is an ongoing challenge of molecular phylogenetics. The availability of genomic data from a broad range of eukaryotic phyla helped in resolving the eukaryotic tree into a topology with a rather small number of large assemblages, but the relationships between these "supergroups" are yet to be confirmed ...
Burki F, Pawlowski J
openaire +5 more sources
Phylogenetic Analysis of Nucleus-Encoded Acetyl-CoA Carboxylases Targeted at the Cytosol and Plastid of Algae. [PDF]
PLoS ONE, 2015 The understanding of algal phylogeny is being impeded by an unknown number of events of horizontal gene transfer (HGT), and primary and secondary/tertiary endosymbiosis.
Roger Huerlimann +3 more
doaj +1 more source