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  • 1
    Book
    Book
    Polar marine diatoms (1990)
    Cambridge : British Antarctic Survey
    Details Availability
    Keywords: Marine algae Polar regions ; Ecology ; Microbiology ; plankton ; phytoplankton ; diatoms ; algology ; Arctic zone ; Antarctic zone ; polar regions
    Type of Medium: Book
    Pages: 214 S , Ill., graph. Darst., Kt , 30 cm
    Edition: 1st published
    ISBN: 0856651400
    DDC: 579
    Language: English
    Note: Literaturver , Bibliography: p. 199 - 214
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  • 2
    Electronic Resource
    Electronic Resource
    Oligonucleotide Probes for the Identification of Three Algal Groups by Dot Blot and Fluorescent Whole-Cell Hybridization (2000)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 47 (2000), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: . Photosynthetic pico- and nanoplankton dominate phytoplankton biomass and primary production in the oligotrophic open ocean. Species composition, community structure, and dynamics of the eukaryotic components of these size classes are poorly known primarily because of the difficulties associated with their preservation and identification. Molecular techniques utilizing 18S rRNA sequences offer a number of new and rapid means of identifying the picoplankton. From the available 18S rRNA sequence data for the algae, we designed new group-specific oligonucleotide probes for the division Chlorophyta, the division Haptophyta, and the class Pelagophyceae (division Heterokonta). Dot blot hybridization with polymerase chain reaction amplified target rDNA and whole-cell hybridization assays with fluorescence microscopy and flow cytometry were used to demonstrate probe specificity. Hybridization results with representatives from seven algal classes supported the phylogenetic affinities of the cells. Such group- or taxon-specific probes will be useful in examining community structure, for identifying new algal isolates, and for in situ detection of these three groups, which are thought to be the dominant algal taxa in the oligotrophic regions of the ocean.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.2000.tb00014.x
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Ribosomal RNA Analysis Indicates a Benthic Pennate Diatom Ancestry for the Endosymbionts of the Dinoflagellates Peridinium foliaceum and Peridinium balticum (Pyrrhophyta) (1997)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 44 (1997), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: . The establishment of chloroplasts as cellular organelles in the dinoflagellate, heterokont (stramenopile), haptophyte, and cryptophyte algae is widely accepted to have been the result of secondary endosymbiotic events, that is, the uptake of a photosynthetic eukaryote by a phagotrophic eukaryote. However, the circumstances that promote such associations between two phylogenetically distinct organisms and result in the integration of their genomes to form a single functional photosynthetic cell is unclear. The dinoflagellates Peridinium foliaceum and Peridinium balticum are unusual in that each contains a membrance-bound eukaryotic heterokont endosymbiont. These symbioses have been interpreted, through data derived from ultrastructural and biochemical investigations, to represent an intermediate stage of secondary endosymbiotic chloroplast acquistion. In this study we have examined the phylogenetic origin of the P. foliaceum and P. Balticum heterokont endosymbionts through analaysis of their nuclear small subunit ribosomal RNA genes. Our analyses clearly demonstrate both endosymbionts are pennate diatoms belonging to the family Bacillariaceae. Since members of the Bacillariaceae are usually benthic, living on shallow marine sediments, the manner in which establishment of a symbiosis between a planktonic flagellated dinoflagellate and a botton-dwelling diatom is discussed. In particular, specific environmentally associated life strategy stages of the host and symbiont, coupled with diatom food preferences by the dinoflagellate, may have been vital to the formation of this association.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1997.tb05672.x
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  • 4
    Electronic Resource
    Electronic Resource
    Phylogenetic analysis of selected toxic and non-toxic bacterial strains isolated from the toxic dinoflagellate Alexandrium tamarense (1997)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 24 (1997), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Recent evidence has implicated bacterial involvement in the production of paralytic shellfish poison toxins, which are normally associated with bloom-forming algal species, specifically toxic dinoflagellate algae. Preliminary reports of the identification of toxin-producing bacteria isolated from the toxic marine dinoflagellate Alexandrium tamarense suggested that they belonged to the gamma sub-division of the Proteobacteria, specifically related to the bacterium Moraxella. Digoxigenin-labelled alpha, beta and gamma ribosomal rRNA probes, hybridized to both toxigenic and non-toxigenic bacteria isolated from several strains of Alexandrium tamarense, indicated that the bacteria belonged to the alpha sub-division of the Proteobacteria. Phylogenetic analysis of small subunit ribosomal RNA coding regions confirmed this and provided strong evidence that these bacteria are likely to represent a new genus in that group.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6941.1997.tb00442.x
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  • 5
    Electronic Resource
    Electronic Resource
    Some Nitzschia and related diatom species from fast ice samples in the Arctic and Antarctic (1990)
    Springer
    Polar biology 10 (1990), S. 451-479 
    Details
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Some Nitzschia and closely related species have been examined in the light and electron microscopes from fast ice samples in the Arctic and Antarctic. Nitzschia neofrigida, forming arborescent colonies, and Nitzschia promare, forming loose ribbon colonies, are described as new species, both probably included in the distribution of other similar species. A new combination, Auricula compacta, represents the first report of this genus from ice samples. Colony formation is reported for the first time in Nitzschia arctica and Nitzschia taeniiformis. No biopolar species were found and several reports of Arctic species in Antarctic ice samples have been refuted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00233693
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  • 6
    Electronic Resource
    Electronic Resource
    Effects of Di-n-butyl phthalate and salinity on the growth of the diatomSkeletonema costatum (1980)
    Springer
    Bulletin of environmental contamination and toxicology 25 (1980), S. 75-78 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01985490
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  • 7
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    Permanent Genetic Resources added to Molecular Ecology Resources Database 1 August 2010 - 30 September 2010 (2011)
    Wiley
    In:  Molecular Ecology Resources, 11 (1). pp. 219-222.
    Details
    Publication Date: 2019-07-05
    Description: This article documents the addition of 229 microsatellite marker loci to the Molecular Ecology Resources Database. Loci were developed for the following species: Acacia auriculiformis × Acacia mangium hybrid, Alabama argillacea, Anoplopoma fimbria, Aplochiton zebra, Brevicoryne brassicae, Bruguiera gymnorhiza, Bucorvus leadbeateri, Delphacodes detecta, Tumidagena minuta, Dictyostelium giganteum, Echinogammarus berilloni, Epimedium sagittatum, Fraxinus excelsior, Labeo chrysophekadion, Oncorhynchus clarki lewisi, Paratrechina longicornis, Phaeocystis antarctica, Pinus roxburghii and Potamilus capax. These loci were cross-tested on the following species: Acacia peregrinalis, Acacia crassicarpa, Bruguiera cylindrica, Delphacodes detecta, Tumidagena minuta, Dictyostelium macrocephalum, Dictyostelium discoideum, Dictyostelium purpureum, Dictyostelium mucoroides, Dictyostelium rosarium, Polysphondylium pallidum, Epimedium brevicornum, Epimedium koreanum, Epimedium pubescens, Epimedium wushanese and Fraxinus angustifolia.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1111/j.1755-0998.2010.02944.x
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 8
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    Haptophyta (2016)
    Springer
    In:  EPIC3Handbook of the Protists, Handbook of the Protists, Springer, pp. 1-61, ISBN: 978-3-319-32669-6
    Details
    Publication Date: 2016-11-17
    Description: Haptophyta are predominantly planktonic and phototrophic organisms that have their main distribution in marine environments worldwide. They are a major component of the microbial ecosystem, some form massive blooms and some are toxic. Haptophytes are significant players in the global carbonate cycle through photosynthesis and calcification. They are characterized by the haptonema, a third appendage used for attachment and food handling, two similar flagella, two golden-brown chloroplasts, and organic body scales that serve in species identification. Coccolithophores have calcified scales termed coccoliths. Phylogenetically Haptophyta form a well-defined group and are divided into two classes Pavlovophyceae and Coccolithophyceae (Prymnesiophyceae). Currently, about 330 species are described. Environmental DNA sequencing shows high haptophyte diversity in the marine pico- and nanoplankton, of which many likely represent novel species and lineages. Haptophyte diversity is believed to have peaked in the past and their presence is documented in the fossil record back to the Triassic, approximately 225 million years ago. Some biomolecules of haptophyte origin are extraordinarily resistant to decay and are thus used by geologists as sedimentary proxies of past climatic conditions.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Inbook , peerRev
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  • 9
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    Biodiversity of Harmful Marine Algae pp. 470-484. Waltham, MA: Academic Press. (2013)
    Academic Press
    In:  EPIC3Encyclopedia of Biodiversity, Second Edition V.1.1, Encyclopedia of Biodiversity, Second Edition V.1, Waltham, MA, Academic Press, pp. 470-484
    Details
    Publication Date: 2014-04-15
    Repository Name: EPIC Alfred Wegener Institut
    Type: Inbook , peerRev
    Format: application/pdf
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  • 10
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    Uncovering hidden biodiversity in the Cryptophyta: Clone library studies at the Helgoland Time Series Site in the Southern German Bight indentifies the cryptophycean clade potentially responsible for the majority of its genetic diversity during the spring bloom. (2017)
    In:  EPIC3Vie et Millieu - Life and Environment, (67), pp. 27-32
    Details
    Publication Date: 2019-07-17
    Description: Cryptophyceae are important group in marine phytoplankton, but little is known about the occurrence and distribution of individual species. Recently, with use of molecular probes and microarray technology, it has been shown that species related to teleaulax spp. or Chroomonas spp. (clades 4 or 6) contributed the most to cryptophycean biomass in the north Sea. for the microarray study, the single probe (clade 4/6) recognizes members of both clades 4 and 6 and thus cannot separate them. Therefore, it was unknown as to whether the cryptophyte community was composed of clade 4, clade 6 or both of them. Here, we addressed this question and increased the genetic diversity of our investigations of cryptophycean diversity in the north Sea by sequencing 18S rRnA clone libraries made from fractionated water samples to examine specifically the picoplanktonic fraction because that fraction was studied in detail in the earlier microarray study. We focused on samples from the spring phytoplankton bloom in 2004 because the microarray signals were the strongest at this time. Excluding chimeric sequences, we detect- ed nine cryptophycean oTUs, seven of which fell into the teleaulax/Plagioselmis branch, whereas two grouped with Geminigera spp. our results indicate that these oTUs, affiliated with clade 4, may be an important component of cryptophyte community during spring bloom in the north Sea
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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