The genus Coelastrella was established by Chodat ( Bull. Soc. Bot. Geneve , 13 [1922] 66), and characterized as being unicellular or in few‐celled aggregations with many longitudinal ribs on the cell wall. Many species of this showed strong ability to accumulate carotenoids oils, so they have recently attracted much attention from researchers due its potential applicability energy food industries. In study, a total 23 strains were sampled China, three new two varieties described: C....

Of the hitherto over 60 taxonomically identified species in genus of Pseudo-nitzschia, 26 have been confirmed to be toxigenic. Nevertheless, acquisition and evolution toxin biosynthesis (dab) genes by this extensive group Pseudo-nitzschia remains unclear. Through constructing chromosome-level genomes three draft ten additional species, putative genomic integration sites for dab were explored. A breakpoint was observed syntenic regions gene cluster-lacking suggesting potential independent...

Coccoid green algae are abundant in subaerial habitats, but they largely unexplored because of their morphological uniformity. Several new genus-level lineages have recently been described on the basis molecular data. In this study, a coccoid alga was isolated from surface soil Zhoukou, Henan Province, China, and cultured cells were using light electron microscopy. The ellipsoidal cell had smooth wall parietal chloroplast with pyrenoid surrounded by starch envelope. Reproduction occurred...

Coccoid green algae are extremely diverse despite their simple coccoid phenotype, a phenotype that may be the result of convergent evolution. In this study, we used polyphasic approach combining molecular phylogenetic analyses, morphology and ultrastructure to investigate isolated strains from China, our results reveal three new lineages Trebouxiophyceae: novel genus species Mysteriochloris nanningensis gen. et sp. nov., two Phyllosiphon coccidium nov. Desertella yichangensis...

This study is the first determination of six chloroplast genomes colonial volvocine algae, Colemanosphaera charkowiensis, Volvulina compacta, Pandorina colemaniae, morum, angeleri and Yamagishiella unicocca. Based on 55 protein-coding genes, we compared nonsynonymous (dN) synonymous (dS) substitution rates between algae other unicellular Chlamydomonadales species. When refer to dN, found 27 genes were significantly different, among them, 19 significant higher in species (FDR-adjusted P value...

Many species belonging to the coccoid green algae genus Coelastrella are considered potential candidates for large-scale production of natural pigments and biofuels. However, little is known about structural, functional molecular aspects chloroplast genomes (cpDNAs) this genus. In present study, complete sequence cpDNA strain FACHB-2138, which was further identified as saipanensis Hanagata based on morphological analyses, elucidated. The 196 140 bp that assembled a circular map found possess...

This study is the first to determine transcriptomes of eight colonial volvocine algae: Pandorina morum, P. colemaniae, Volvulina compacta, Eudorina elegans, E. cylindrica, Yamagishiella unicocca, Colemanosphaera charkowiensis and C. angeleri. By analysing these data together with whole-genome Chlamydomonas reinhardtii other algae, we determined 26 979 gene families 105 single-copy orthogroups. Using orthogroups, adopted a supermatrix coalescent-based approach perform phylotranscriptomic...

The colonial volvocine algae span the full range of organizational complexity, from four-celled species to multicellular species, and this group is often used for study evolution. In recent years, many organelle genomes have been sequenced using application next generation sequencing technology; however, only a few reported in algae. study, we determined Eudorina elegans cylindrica analysed genome size, structure gene content between these species. This provided useful information help us...

Chlorellacean members are common in aquatic or subaerial habitats, and many of them have significant economic value. Taxonomic reports organelle genome data for the

Members of Quadricoccus-like algae are characterized by oval to ellipsoid cells adherent the bowl-shaped or stretched, empty mother cell walls and common in phytoplankton inland waters.To date, morphologically similar genera Quadricoccus Lobocystis accepted for this group former had been phylogenetic positioned Oocystaceae.In study, seven strains were identified successfully cultured laboratory.Light electron microscope observations analysis revealed that represent three different species...

Abstract The Parachlorella clade was put forward as a group within the family Chlorellaceae in 2004. Recent molecular analyses have revealed that Dictyosphaerium morphotype algae form several independent lineages clade, and new genera species been established. In this study, we focus on diversity of based 42 strains from China. We used combined morphology data SSU internal transcribed spacer region ( ITS ) rDNA sequences to characterize these algae. addition, secondary structure 2 compared...

:Cladophora has a global distribution and provides habitat food for numerous organisms. However, the taxonomy of Cladophora is confusing poorly defined. In this study, 69 freshwater brackish-water samples from inland China were collected, both morphological phylogenetic analyses these performed. The concatenated molecular phylogenies based on ribosomal DNA sequences showed that belonged to two groups: non-freshwater Cladophora. results there eight clades in group. observation characteristic...

The haptophyte Phaeocystis globosa is a well-known species for its pivotal role in global carbon and sulfur cycles capability of forming harmful algal blooms (HABs) with serious ecological consequences. Its mitochondrial genome (mtDNA) sequence has been reported 2014 but it remains incomplete due to long repeat sequences. In this study, we constructed the first full-length mtDNA P. , which was circular size 43,585 bp by applying PacBio single molecular sequencing method. strain (CNS00066),...

Abstract The Oocystaceae family is generally considered to contain common freshwater eukaryotic microalgae, and few are reported living in semi‐saline habitats. Our latest ecological survey Qinghai Lake Angzicuo Lake, both large, closed, high‐altitude, lakes located on the Qinghai‐Tibet plateau China, revealed species as a dominant group among plankton. Since limited knowledge exists about family, taxonomical study was carried out using morphological phylogenetic methods. Using this...

A sudden large-scale bloom event of the haptophyte Phaeocystis globosa that lasted over one month in winter 2021 was observed offshore Qingdao, China. This P. unusual as it first recorded Qingdao offshore. Furthermore, temperature at which this occurred much lower than previous blooms We hypothesize strains drove development were genetically unique and have a competitive advantage environmental conditions. To test hypothesis, we analyzed genetic diversity temporal dynamics bloom, using...

:The Chlorellaceae is a family in the order Chlorellales that includes mostly coccoid algae of minute sizes, and portion this was separated into two sister groups (the Chlorella clade Parachlorella clade) according to molecular phylogenetic analyses. To date, comprises 11 genera exhibit range morphological variation. In study, we discovered from China strain marked as FACHB-2137; use polyphasic approach, including analyses SSU+ITS rDNA, an ITS2/CBC (compensatory base changes) light...

Accuracy, a key indicator of pathogen detection technology, is compromised by carryover contamination in the amplicon sequencing workflow. Taking SARS-CoV-2 as case, this study presents new contamination-controlled

Background & Aims: Species of the Chlorellaceae family have been found in freshwater, marine, and terrestrial habitats all over world.Organisms are important a variety ecosystems, because scientific applied value, considerable research has conducted on this family.The morphological characteristics Chlorellacean members difficult to distinguish due their small size, similar structures, strong phenotypic plasticity.This resulted difficulties species identification taxonomic research.Advances:...

:Unicellular coccoid green algae are characterised by a high cryptic diversity, but such diversity is still poorly known, especially in terrestrial environments. The genus Jenufa, first described 2011 from habitats, currently includes three species: J. perforata, minuta and aeroterrestrica. We describe new species, Jenufa lobulosa sp. nov. type strain FACHB-2128 was isolated sandstone surfaces Nanning, Guangxi Province, subtropical area southwestern China, the cultured material examined...

Diatoms are responsible for approximately 40% of the global primary photosynthetic production and account up to 20% carbon fixation. Coscinodiscus granii is a red tide forming species phylum Bacillariophyta that has been detected in wide range coastal regions, suggesting possibility existence high genetic diversity with differential adaptation. Common molecular markers including 18S rDNA, 16S ITS, cox1, rbcL do not provide sufficient resolution distinguishing intra-species diversity,...