A new centrohelid heliozoan, Pterocystis polycristalepis sp. nov., and taxonomic and phylogenetic concerns within Pterista (Haptista: Centroplasthelida)
Eur J Protistol. 2024 Feb 20;94:126064. doi: 10.1016/j.ejop.2024.126064. Online ahead of print.ABSTRACTA new species of centrohelid heliozoans, Pterocystis polycristalepis sp. nov. (Pterocystidae), was examined using light and electron microscopy. The novel centrohelid is characterized by the presence of leaf-like spine-scales with a broad pedicel-like structure on the proximal part and many subparallel ribs on the lateral wing surface. The plate-scales are ovoid with medial tubular thickening and many subparallel ribs on the very extensive marginal rim. The closely related species Pterocystis striata has also been studied...
Source: European Journal of Protistology - March 26, 2024 Category: Microbiology Authors: Dmitry G Zagumyonnyi Denis V Tikhonenkov Source Type: research
A new centrohelid heliozoan, Pterocystis polycristalepis sp. nov., and taxonomic and phylogenetic concerns within Pterista (Haptista: Centroplasthelida)
Eur J Protistol. 2024 Feb 20;94:126064. doi: 10.1016/j.ejop.2024.126064. Online ahead of print.ABSTRACTA new species of centrohelid heliozoans, Pterocystis polycristalepis sp. nov. (Pterocystidae), was examined using light and electron microscopy. The novel centrohelid is characterized by the presence of leaf-like spine-scales with a broad pedicel-like structure on the proximal part and many subparallel ribs on the lateral wing surface. The plate-scales are ovoid with medial tubular thickening and many subparallel ribs on the very extensive marginal rim. The closely related species Pterocystis striata has also been studied...
Source: European Journal of Protistology - March 26, 2024 Category: Microbiology Authors: Dmitry G Zagumyonnyi Denis V Tikhonenkov Source Type: research
A new centrohelid heliozoan, Pterocystis polycristalepis sp. nov., and taxonomic and phylogenetic concerns within Pterista (Haptista: Centroplasthelida)
Eur J Protistol. 2024 Feb 20;94:126064. doi: 10.1016/j.ejop.2024.126064. Online ahead of print.ABSTRACTA new species of centrohelid heliozoans, Pterocystis polycristalepis sp. nov. (Pterocystidae), was examined using light and electron microscopy. The novel centrohelid is characterized by the presence of leaf-like spine-scales with a broad pedicel-like structure on the proximal part and many subparallel ribs on the lateral wing surface. The plate-scales are ovoid with medial tubular thickening and many subparallel ribs on the very extensive marginal rim. The closely related species Pterocystis striata has also been studied...
Source: European Journal of Protistology - March 26, 2024 Category: Microbiology Authors: Dmitry G Zagumyonnyi Denis V Tikhonenkov Source Type: research
A new centrohelid heliozoan, Pterocystis polycristalepis sp. nov., and taxonomic and phylogenetic concerns within Pterista (Haptista: Centroplasthelida)
Eur J Protistol. 2024 Feb 20;94:126064. doi: 10.1016/j.ejop.2024.126064. Online ahead of print.ABSTRACTA new species of centrohelid heliozoans, Pterocystis polycristalepis sp. nov. (Pterocystidae), was examined using light and electron microscopy. The novel centrohelid is characterized by the presence of leaf-like spine-scales with a broad pedicel-like structure on the proximal part and many subparallel ribs on the lateral wing surface. The plate-scales are ovoid with medial tubular thickening and many subparallel ribs on the very extensive marginal rim. The closely related species Pterocystis striata has also been studied...
Source: European Journal of Protistology - March 26, 2024 Category: Microbiology Authors: Dmitry G Zagumyonnyi Denis V Tikhonenkov Source Type: research
A new centrohelid heliozoan, Pterocystis polycristalepis sp. nov., and taxonomic and phylogenetic concerns within Pterista (Haptista: Centroplasthelida)
Eur J Protistol. 2024 Feb 20;94:126064. doi: 10.1016/j.ejop.2024.126064. Online ahead of print.ABSTRACTA new species of centrohelid heliozoans, Pterocystis polycristalepis sp. nov. (Pterocystidae), was examined using light and electron microscopy. The novel centrohelid is characterized by the presence of leaf-like spine-scales with a broad pedicel-like structure on the proximal part and many subparallel ribs on the lateral wing surface. The plate-scales are ovoid with medial tubular thickening and many subparallel ribs on the very extensive marginal rim. The closely related species Pterocystis striata has also been studied...
Source: European Journal of Protistology - March 26, 2024 Category: Microbiology Authors: Dmitry G Zagumyonnyi Denis V Tikhonenkov Source Type: research
A new centrohelid heliozoan, Pterocystis polycristalepis sp. nov., and taxonomic and phylogenetic concerns within Pterista (Haptista: Centroplasthelida)
Eur J Protistol. 2024 Feb 20;94:126064. doi: 10.1016/j.ejop.2024.126064. Online ahead of print.ABSTRACTA new species of centrohelid heliozoans, Pterocystis polycristalepis sp. nov. (Pterocystidae), was examined using light and electron microscopy. The novel centrohelid is characterized by the presence of leaf-like spine-scales with a broad pedicel-like structure on the proximal part and many subparallel ribs on the lateral wing surface. The plate-scales are ovoid with medial tubular thickening and many subparallel ribs on the very extensive marginal rim. The closely related species Pterocystis striata has also been studied...
Source: European Journal of Protistology - March 26, 2024 Category: Microbiology Authors: Dmitry G Zagumyonnyi Denis V Tikhonenkov Source Type: research
A new centrohelid heliozoan, Pterocystis polycristalepis sp. nov., and taxonomic and phylogenetic concerns within Pterista (Haptista: Centroplasthelida)
Eur J Protistol. 2024 Feb 20;94:126064. doi: 10.1016/j.ejop.2024.126064. Online ahead of print.ABSTRACTA new species of centrohelid heliozoans, Pterocystis polycristalepis sp. nov. (Pterocystidae), was examined using light and electron microscopy. The novel centrohelid is characterized by the presence of leaf-like spine-scales with a broad pedicel-like structure on the proximal part and many subparallel ribs on the lateral wing surface. The plate-scales are ovoid with medial tubular thickening and many subparallel ribs on the very extensive marginal rim. The closely related species Pterocystis striata has also been studied...
Source: European Journal of Protistology - March 26, 2024 Category: Microbiology Authors: Dmitry G Zagumyonnyi Denis V Tikhonenkov Source Type: research
Homo- and hetero-oligomeric protein-protein associations explain autocrine and heterologous pheromone-cell interactions in Euplotes
Eur J Protistol. 2024 Mar 16;94:126075. doi: 10.1016/j.ejop.2024.126075. Online ahead of print.ABSTRACTIn Euplotes, protein pheromones regulate cell reproduction and mating by binding cells in autocrine or heterologous fashion, respectively. Pheromone binding sites (receptors) are identified with membrane-bound pheromone isoforms determined by the same genes specifying the soluble forms, establishing a structural equivalence in each cell type between the two twin proteins. Based on this equivalence, autocrine and heterologous pheromone/receptor interactions were investigated analyzing how native molecules of pheromones Er-...
Source: European Journal of Protistology - March 23, 2024 Category: Microbiology Authors: Claudio Alimenti Bill Pedrini Pierangelo Luporini Yaohan Jiang Adriana Vallesi Source Type: research
Homo- and hetero-oligomeric protein-protein associations explain autocrine and heterologous pheromone-cell interactions in Euplotes
Eur J Protistol. 2024 Mar 16;94:126075. doi: 10.1016/j.ejop.2024.126075. Online ahead of print.ABSTRACTIn Euplotes, protein pheromones regulate cell reproduction and mating by binding cells in autocrine or heterologous fashion, respectively. Pheromone binding sites (receptors) are identified with membrane-bound pheromone isoforms determined by the same genes specifying the soluble forms, establishing a structural equivalence in each cell type between the two twin proteins. Based on this equivalence, autocrine and heterologous pheromone/receptor interactions were investigated analyzing how native molecules of pheromones Er-...
Source: European Journal of Protistology - March 23, 2024 Category: Microbiology Authors: Claudio Alimenti Bill Pedrini Pierangelo Luporini Yaohan Jiang Adriana Vallesi Source Type: research
Homo- and hetero-oligomeric protein-protein associations explain autocrine and heterologous pheromone-cell interactions in Euplotes
Eur J Protistol. 2024 Mar 16;94:126075. doi: 10.1016/j.ejop.2024.126075. Online ahead of print.ABSTRACTIn Euplotes, protein pheromones regulate cell reproduction and mating by binding cells in autocrine or heterologous fashion, respectively. Pheromone binding sites (receptors) are identified with membrane-bound pheromone isoforms determined by the same genes specifying the soluble forms, establishing a structural equivalence in each cell type between the two twin proteins. Based on this equivalence, autocrine and heterologous pheromone/receptor interactions were investigated analyzing how native molecules of pheromones Er-...
Source: European Journal of Protistology - March 23, 2024 Category: Microbiology Authors: Claudio Alimenti Bill Pedrini Pierangelo Luporini Yaohan Jiang Adriana Vallesi Source Type: research
Parallel functional reduction in the mitochondria of apicomplexan parasites
Eur J Protistol. 2024 Mar 9;94:126065. doi: 10.1016/j.ejop.2024.126065. Online ahead of print.ABSTRACTExtreme functional reduction of mitochondria has taken place in parallel in many distantly related lineages of eukaryotes, leading to a number of recurring metabolic states with variously lost electron transport chain (ETC) complexes, loss of the tricarboxylic acid (TCA) cycle, and/or loss of the mitochondrial genome. The resulting mitochondria-related organelles (MROs) are generally structurally reduced and in the most extreme cases barely recognizable features of the cell with no role in energy metabolism whatsoever (e.g...
Source: European Journal of Protistology - March 16, 2024 Category: Microbiology Authors: Patrick J Keeling Mahara Mtawali Morelia Trznadel Samuel J Livingston Kevin C Wakeman Source Type: research
Parallel functional reduction in the mitochondria of apicomplexan parasites
Eur J Protistol. 2024 Mar 9;94:126065. doi: 10.1016/j.ejop.2024.126065. Online ahead of print.ABSTRACTExtreme functional reduction of mitochondria has taken place in parallel in many distantly related lineages of eukaryotes, leading to a number of recurring metabolic states with variously lost electron transport chain (ETC) complexes, loss of the tricarboxylic acid (TCA) cycle, and/or loss of the mitochondrial genome. The resulting mitochondria-related organelles (MROs) are generally structurally reduced and in the most extreme cases barely recognizable features of the cell with no role in energy metabolism whatsoever (e.g...
Source: European Journal of Protistology - March 16, 2024 Category: Microbiology Authors: Patrick J Keeling Mahara Mtawali Morelia Trznadel Samuel J Livingston Kevin C Wakeman Source Type: research
Parallel functional reduction in the mitochondria of apicomplexan parasites
Eur J Protistol. 2024 Mar 9;94:126065. doi: 10.1016/j.ejop.2024.126065. Online ahead of print.ABSTRACTExtreme functional reduction of mitochondria has taken place in parallel in many distantly related lineages of eukaryotes, leading to a number of recurring metabolic states with variously lost electron transport chain (ETC) complexes, loss of the tricarboxylic acid (TCA) cycle, and/or loss of the mitochondrial genome. The resulting mitochondria-related organelles (MROs) are generally structurally reduced and in the most extreme cases barely recognizable features of the cell with no role in energy metabolism whatsoever (e.g...
Source: European Journal of Protistology - March 16, 2024 Category: Microbiology Authors: Patrick J Keeling Mahara Mtawali Morelia Trznadel Samuel J Livingston Kevin C Wakeman Source Type: research
Parallel functional reduction in the mitochondria of apicomplexan parasites
Eur J Protistol. 2024 Mar 9;94:126065. doi: 10.1016/j.ejop.2024.126065. Online ahead of print.ABSTRACTExtreme functional reduction of mitochondria has taken place in parallel in many distantly related lineages of eukaryotes, leading to a number of recurring metabolic states with variously lost electron transport chain (ETC) complexes, loss of the tricarboxylic acid (TCA) cycle, and/or loss of the mitochondrial genome. The resulting mitochondria-related organelles (MROs) are generally structurally reduced and in the most extreme cases barely recognizable features of the cell with no role in energy metabolism whatsoever (e.g...
Source: European Journal of Protistology - March 16, 2024 Category: Microbiology Authors: Patrick J Keeling Mahara Mtawali Morelia Trznadel Samuel J Livingston Kevin C Wakeman Source Type: research
Parallel functional reduction in the mitochondria of apicomplexan parasites
Eur J Protistol. 2024 Mar 9;94:126065. doi: 10.1016/j.ejop.2024.126065. Online ahead of print.ABSTRACTExtreme functional reduction of mitochondria has taken place in parallel in many distantly related lineages of eukaryotes, leading to a number of recurring metabolic states with variously lost electron transport chain (ETC) complexes, loss of the tricarboxylic acid (TCA) cycle, and/or loss of the mitochondrial genome. The resulting mitochondria-related organelles (MROs) are generally structurally reduced and in the most extreme cases barely recognizable features of the cell with no role in energy metabolism whatsoever (e.g...
Source: European Journal of Protistology - March 16, 2024 Category: Microbiology Authors: Patrick J Keeling Mahara Mtawali Morelia Trznadel Samuel J Livingston Kevin C Wakeman Source Type: research
