IF 2.2 3区生物学

Fottea Pub Date : 2021-04-01 DOI: 10.5507/FOT.2020.014

A. Hindáková, T. Noga

{"title":"Luticola rojkoviensis sp. nov. (Bacillariophyta), a new terrestrial diatom from Central Slovakia","authors":"A. Hindáková, T. Noga","doi":"10.5507/FOT.2020.014","DOIUrl":"https://doi.org/10.5507/FOT.2020.014","url":null,"abstract":"Sampling of fungi in a grassland on a hill in Rojkov, Central Slovakia, revealed a new species of Luticola (Diadesmidaceae). Its terrestrial populations were found close to the basis of the fertile part of the geoglossoid fungi (Geoglossaceae) that were overgrown with filamentous cyanobacteria of the orders Oscillatoriales and Synechococcales. Luticola rojkoviensis sp. nov. is characterized by the valve outline and the structure of the external valve face: valves are weakly dorsiventrally asymmetrical, rhombic-lanceolate in larger cells to rhombic-elliptic and tri-undulate in smaller cells, with shortly protracted and broadly rounded valve apices. Valve face is minimally concave, as the axial area is lowered and the area around distal raphe elevated. The surface of the valve is mostly uneven due to many depressions, so the external shape of the areolae and the impression of irregular longitudinal rows depend on the extent of these valve ornamentations. Proximal raphe endings are unilaterally slightly deflected, expanded into small central pores. The shape of both the proximal and the distal raphe fissures is slightly asymmetrical. The morphological characteristics of Luticola rojkoviensis sp. nov. are remarkably similar to those of L. hustedtii Levkov, Metzeltin et A.Pavlov, L. ectorii Levkov, Metzeltin et A.Pavlov and L. acidoclinata Lange-Bertalot. The association of Luticola rojkoviensis sp. nov. with geoglossoid fungi and epiphytic cyanobacteria is discussed.","PeriodicalId":55149,"journal":{"name":"Fottea","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45461299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Description of Gomphothidium gen. nov., with light and scanning electron microscopy: A New Freshwater Monoraphid Diatom Genus from Asia 光镜和扫描电子显微镜描述：亚洲一个新的淡水萝卜花硅藻属

IF 2.2 3区生物学

Fottea Pub Date : 2021-04-01 DOI: 10.5507/FOT.2020.011

J. Kociolek, Q. You, P. Yu, Yanling Li, Yanlu Wang, R. Lowe, Quanxi Wang

引用次数: 4

Annamia dubia sp. nov. with a description of a new family, Geminocystaceae fam. nov. (Cyanobacteria) Annamia dubia sp.nov.并报道一个新科，Geminocystaceae家族。nov.（蓝藻）

IF 2.2 3区生物学

Fottea Pub Date : 2021-04-01 DOI: 10.5507/FOT.2021.003

A. Tuji, Haruyo Yamaguchi, Takafumi Kataoka, Mayumi Sato, T. Sano, Y. Niiyama

引用次数: 5

Mychonastes frigidus sp. nov. (Sphaeropleales/Chlorophyceae), a new species described from a mountain stream in the Subpolar Urals (Russia) 俄罗斯亚极地乌拉尔山脉一条山间溪流中发现的一新种——冷密蚧(mychonastusfrigidus sp. 11 .)

IF 2.2 3区生物学

Fottea Pub Date : 2021-04-01 DOI: 10.5507/FOT.2020.012

E. Patova, I. Novakovskaya, N. Martynenko, E. Gusev, M. Kulikovskiy

引用次数: 3

Phylogeny and taxonomy of Synechococcus-like cyanobacteria 类聚球菌蓝藻的系统发育与分类

IF 2.2 3区生物学

Fottea Pub Date : 2020-09-21 DOI: 10.5507/FOT.2020.006

J. Komárek, J. Johansen, J. Šmarda, O. Strunecký

{"title":"Phylogeny and taxonomy of Synechococcus-like cyanobacteria","authors":"J. Komárek, J. Johansen, J. Šmarda, O. Strunecký","doi":"10.5507/FOT.2020.006","DOIUrl":"https://doi.org/10.5507/FOT.2020.006","url":null,"abstract":"Unicellular cyanobacteria constitute a substantial, ecologically important part of freshwater and marine microflora. Solitary, elongated cyanobacterial cells without apparent slime envelopes and dividing in a single plane perpendicular to the longitudinal axis were traditionally classified into the genus Synechococcus. The type species originates from a freshwater benthic habitat while a number of other Synechococcus-like species were described from diverse environments. Morphologically similar, unicellular populations of \"Synechococcus\" belong to the most abundant oxygen evolving prokaryotes inhabiting freshwater and oceanic picoplanktic communities. Other species from extreme thermal habitats were described from temperatures over 70 °C. Recent molecular analyses, particularly the 16S rRNA gene and other multi-locus gene based phylogenies of Synechococcus-like species reveal the polyphyly and phylogenetic diversity of such simple cyanobacteria emphasizing the necessity of their accurate polyphasic taxonomic re-classification. To better understand the phylogeny of different Synechococcus-like species, we constructed a genome-derived phylogenetic tree using 133 cyanobacterial and eubacterial genomes as well as a 16S rRNA gene phylogenetic tree. Both trees indicate existence of deep splits between individual Synechococcus lineages corresponding with indistinct ecological and cytomorphological differences. The generic units derived from the traditional concept of the genus Synechococcus based on the combined traits and markers must be defined and validly described. The comparative taxonomic classification of phylogenetic clusters corresponding to various morphotypes and genotypes similar to the genus Synechococcus (Cyanobium, Parasynechococcus, Picosynechococcus, Prochlorococcus, Thermosynechococcus, Thermostichus) are discussed in the article.","PeriodicalId":55149,"journal":{"name":"Fottea","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2020-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45525394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 37

A new freshwater Psammodictyon species in the Taihu Basin, Jiangsu Province, China 标题江苏太湖盆地一新种

IF 2.2 3区生物学

Fottea Pub Date : 2020-09-07 DOI: 10.5507/fot.2020.005

QI Yang, Teng-Liang Liu, P. Yu, Junyi Zhang, J. Kociolek, Quanxi Wang, Q. You

引用次数: 1

Johannesbaptistia floridana sp. nov. (Chroococcales, Cyanobacteria), a novel marine cyanobacterium from coastal South Florida (USA) Johannesaptistia floridana sp.nov.（Chrooccales，Cyanobacteria），一种来自美国南佛罗里达州沿海的新型海洋蓝细菌

IF 2.2 3区生物学

Fottea Pub Date : 2020-09-07 DOI: 10.5507/fot.2020.008

D. Berthold, Forrest W. Lefler, V. Werner, H. Iv

引用次数: 4

Taxonomic studies of Cryptomonas lundii clade (Cryptophyta: Cryptophyceae) with description of a new species from Vietnam 越南隐单胞菌分支的分类研究（隐藻门：隐藻科）及一新种记述

IF 2.2 3区生物学

Fottea Pub Date : 2020-09-07 DOI: 10.5507/fot.2020.004

E. Gusev, Y. Podunay, N. Martynenko, N. Shkurina, M. Kulikovskiy

引用次数: 7

Preliminary molecular phylogeny of the diatom genus Nupela with the description of a new species and consideration of the interrelationships of taxa in the suborder Neidiineae D.G. Mann sensu E.J. Cox Nupela硅藻属的分子系统发育与一个新种的描述及Neidiineae亚目分类群相互关系的考虑

IF 2.2 3区生物学

Fottea Pub Date : 2020-09-07 DOI: 10.5507/fot.2020.009

M. Kulikovskiy, Y. Maltsev, A. Glushchenko, E. Gusev, D. Kapustin, I. Kuznetsova, L. Frolova, J. Kociolek

引用次数: 8

Two new Oculatella (Oculatellaceae, Cyanobacteria) species in soil crusts from tropical semi-arid uplands of México 青海热带半干旱高原土壤结皮中青藻属二新种(青藻科)

IF 2.2 3区生物学

Fottea Pub Date : 2020-09-07 DOI: 10.5507/fot.2020.010

I. Becerra-Absalón, J. Johansen, Karina Osorio-Santos, G. Montejano

{"title":"Two new Oculatella (Oculatellaceae, Cyanobacteria) species in soil crusts from tropical semi-arid uplands of México","authors":"I. Becerra-Absalón, J. Johansen, Karina Osorio-Santos, G. Montejano","doi":"10.5507/fot.2020.010","DOIUrl":"https://doi.org/10.5507/fot.2020.010","url":null,"abstract":"Two isolates of Oculatella from biological soil crusts in the arid and semi-arid tropical upland region of Mexico were characterized using a polyphasic approach which included morphology, ecology, 16S rRNA and 16S-23S ITS phylogenetic analysis, percent identity of 16S rRNA gene sequence, percent dissimilarity of 16S-23S ITS sequence, and secondary structure of conserved ITS domains. The two species shared the generic synapomorphy of a reddish granule at the tip of mature apical cells, and possessed a single ribosomal operon with both tRNA genes (tRNAIle and tRNAAla) based upon our analysis and the analysis of the other species in the genus. After characterization, the strains were compared with 10 previously described and similarly characterized species in the genus, and based upon the evidence obtained, the strains were described as two new species, O. dilatativagina and O. leona. O. dilatativagina has an extensively widened sheath, and thus is morphologically separated from all other taxa described thus far. O. leona is morphologically highly similar to soil species found in North and South America, and should be considered a cryptic species among these taxa. The recently developed criterion for species recognition using percent dissimilarity among ITS gene sequences in orthologous ribosomal operons was found to be effective in separating cryptic species of Oculatella, and has consistently been useful and sufficient for separation of closely related species in other cyanobacterial genera.","PeriodicalId":55149,"journal":{"name":"Fottea","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49003558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

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