<i>Laetitia sardoa gen</i>. &amp; <i>sp. nov</i>., a new member of the Chlorellales (Trebouxiophyceae, Chlorophyta) isolated from Sardinia Island

Malavasi, Veronica; Škvorová, Zuzana; Němcová, Yvonne‬; Škaloud, Pavel

doi:10.1080/00318884.2022.2054252

Cited by 7 publications

(6 citation statements)

References 37 publications

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“…The branches of this SLG4‐06 and Pumiliosphaera form a triplicate clade with branches from Marvania to Edaphochloris and from Nannochloris to Gloeotila clade; furthermore, this triplicate clade is sister to Picochlorum . The topology of these taxa is similar to that presented by Malavasi et al (2022), with some differences in the species composition of branches of the related genera. In the trees by Malavasi et al (2022) the two genera Marvania and Latitia constituted a single branch that is sister to Picochlorum and distant from Pumiliosphaera , whereas, in the present 18S rDNA tree, the former two genera constituted a branch with Pumiliosphaera (Fig.…”

Section: Resultssupporting

confidence: 80%

“…The topology of these taxa is similar to that presented by Malavasi et al (2022), with some differences in the species composition of branches of the related genera. In the trees by Malavasi et al (2022) the two genera Marvania and Latitia constituted a single branch that is sister to Picochlorum and distant from Pumiliosphaera , whereas, in the present 18S rDNA tree, the former two genera constituted a branch with Pumiliosphaera (Fig. 2).…”

Section: Resultssupporting

confidence: 80%

“…2). These differences are caused by low or unsupportable probability of deeper nodes among the genera, as shown in previous studies (Neustupa et al 2011;Darienko and Proschold 2015;Malavasi et al 2022). The SLG4-06 is a marine inhabitant, and Picochlorum and Pseudochloris also dwell in seawater.…”

Section: Phylogenetic Analysissupporting

confidence: 54%

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Picochloropsis malayensis gen. et sp. nov. (Chlorellales, Chlorophyta), an ammonium tolerant, polyphosphate‐accumulating microalga from seawater

Katayama,

Takahashi,

Wahid

et al. 2024

Phycological Research

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SUMMARYThe significant concentrations of phosphate in wastewater can be considered as an important fertilizer source. Some microalgae uptake phosphate from wastewater and store it in the form of polyphosphate (polyP). Therefore, biological phosphorus recovery processes have been attracting significant attention recently. However, wastewaters are often rich in ammonium, and so microalgae used for phosphorus recovery should be tolerant of this component. In the present study, 151 microalgae were isolated from freshwater, brackish water and seawater. Among them, 11 strains showed higher growth rates in ammonium‐rich media. Of these, the strain SLG4‐06 originating from a marine environment showed the highest polyP accumulation rate and was selected as the most potential alga for phosphorus recovery from wastewater. Based on the morphological and ultrastructural characteristics and phylogenetic analyses of nuclear‐encoded 18S rDNA and chloroplast‐encoded rbcL of strain SLG4‐06, we propose Picochloropsis malayensis gen. et sp. nov. for this strain in the Chlorellales, Trebouxiophyceae. Because P. malayensis can grow in both seawater and freshwater environments, it may be suitable for wastewater treatment in marine aquaculture ponds with widely fluctuating salinity levels.

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Section: Resultssupporting

confidence: 80%

Section: Resultssupporting

confidence: 80%

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Picochloropsis malayensis gen. et sp. nov. (Chlorellales, Chlorophyta), an ammonium tolerant, polyphosphate‐accumulating microalga from seawater

Katayama,

Takahashi,

Wahid

et al. 2024

Phycological Research

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“…At present, the name 'Chlorella' indicates the morphotype of the organism rather than its taxonomic status. Such a morphotype is a result of convergent evolution and occurs among various microalgae [52][53][54][55]. In this regard, the most effective way to determine the true taxonomic status is a combined use of morphological, ecophysiological, and molecular phylogenetic methods [8,14,41,56].…”

Section: Discussionmentioning

confidence: 99%

Description of Neochlorella semenenkoi gen. et. sp. nov. (Chlorophyta, Trebouxiophyceae), a Novel Chlorella-like Alga with High Biotechnological Potential

et al. 2023

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Despite many publications about Chlorella-like algae, their reliable and accurate identification is still difficult due to their simplicity and high phenotypic plasticity. The molecular approach has revolutionized our understanding of the diversity of ’small green balls’, and a natural classification of this group is currently being developed. This work is aimed at providing a detailed study of the phylogenetic position, morphology, ultrastructure, and physiology of the biotechnologically remarkable Chlorella-like strain IPPAS C-1210. Based on the SSU–ITS1–5.8S–ITS2 phylogeny, genetic distances, and the presence of compensatory base changes (CBCs) in ITS1 and conserved regions of ITS2 secondary structures, we describe a new genus, Neochlorella, with IPPAS C-1210 as the authentic strain of the type species, N. semenenkoi gen. and sp. nov. In addition, we justify the reassignment of the strain C. thermophila ITBB HTA 1–65 into N. thermophila comb. nov. The distinctive ultrastructural and physiological traits of the new species are discussed.

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“…Despite the growing knowledge of trebouxiophyte diversity, with new and previously overlooked taxa (species and genera) being described at a steady pace (e.g., Barcytė et al ., 2017; Li et al ., 2020; Malavasi et al ., 2022; Kato et al ., 2023), the higher-level phylogenetic relationships within Trebouxiophyceae, and formal delimitation of taxa at the suprageneric level, remain highly unsettled. Identifying monophyletic clades with a full statistical support is primarily hampered by unstable phylogenetic relationships largely caused by poorly sampled lineages “jumping” across the Trebouxiophyceae phylogenies depending on the taxa sampled or a molecular marker used.…”

Section: Introductionmentioning

confidence: 99%

Freshwater ‘microcroissants’ shed light on a novel higher-level clade within Trebouxiophyceae and reveal the genusChlorolobionas a trebouxiophyte

Barcytė,

Hodač,

Eliáš

2024

Preprint

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Trebouxiophyceae is a widespread and species-rich green algal class encompassing mostly coccoid algae with a simple ovoid or ellipsoidal outline. However, some poorly-sampled lineages have evolved more elaborate shapes or even complex thalli, adding to the class's morphological diversity. Led by new and previously established strains, this study additionally uncovered a clade of croissant-like trebouxiophytes. Phylogenetic analyses inferred from nuclear 18S rDNA and chloroplastrbcLsequences confirmed the monophyly of the "microcroissant" clade, which we propose to be classified as a new family, Ragelichloridaceae. This family includes two novel genera,RagelichlorisandNavichloris, and the previously describedThorsmoerkia. The position of Ragelichloridaceae within Trebouxiophyceae stayed unresolved but chloroplast phylogenomics showed that the family belongs to the broaderincertae sedisgroup, which also includesXylochlorisandLeptosira. In addition, our study showed that the microcroissant-like genusChlorolobion, previously classified within Chlorophyceae, is a genuine trebouxiophyte, potentially related to Ragelichloridaceae.

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Laetitia sardoa gen. & sp. nov., a new member of the Chlorellales (Trebouxiophyceae, Chlorophyta) isolated from Sardinia Island

Cited by 7 publications

References 37 publications

Picochloropsis malayensis gen. et sp. nov. (Chlorellales, Chlorophyta), an ammonium tolerant, polyphosphate‐accumulating microalga from seawater

Picochloropsis malayensis gen. et sp. nov. (Chlorellales, Chlorophyta), an ammonium tolerant, polyphosphate‐accumulating microalga from seawater

Description of Neochlorella semenenkoi gen. et. sp. nov. (Chlorophyta, Trebouxiophyceae), a Novel Chlorella-like Alga with High Biotechnological Potential

Freshwater ‘microcroissants’ shed light on a novel higher-level clade within Trebouxiophyceae and reveal the genusChlorolobionas a trebouxiophyte

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