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Biodiversity of green algae covering artificial hard substrate surfaces in a suburban environment: a case study using molecular approaches.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Hallmann, Christine Hoppert, Michael Mudimu, Opayi Friedl, Thomas
Description	Country affiliation: Germany Author Affiliation: Hallmann C ( Experimental Phycology and Culture Collection of Algae (SAG), Albrecht-von-Haller-Institute for Plant Sciences, Georg August University Göttingen, Nikolausberger Weg 18, 37073, Göttingen, Germany.); Hoppert M ( Institute of Microbiology and Genetics, Georg August University Göttingen, Grisebachstraße 8, 37077, Göttingen, Germany.); Mudimu O ( Experimental Phycology and Culture Collection of Algae (SAG), Albrecht-von-Haller-Institute for Plant Sciences, Georg August University Göttingen, Nikolausberger Weg 18, 37073, Göttingen, Germany.); Friedl T ( Experimental Phycology and Culture Collection of Algae (SAG), Albrecht-von-Haller-Institute for Plant Sciences, Georg August University Göttingen, Nikolausberger Weg 18, 37073, Göttingen, Germany.)
Abstract	In Middle European suburban environments green algae often cover open surfaces of artificial hard substrates. Microscopy reveals the Apatococcus/Desmococcus morphotype predominant over smaller coccoid forms. Adverse conditions such as limited water availability connected with high PAR and UV irradiance may narrow the algal diversity to a few specialists in these subaerial habitats. We used rRNA gene cloning/sequencing from both DNA extracts of the biofilms without culturing as well as cultures, for the unambiguous determination of the algal composition and to assess the algal diversity more comprehensively. The culture independent approach revealed mainly just two genera (Apatococcus, Trebouxia) for all study sites and five molecular operational taxonomic units (OTUs) for a particular study site, which based on microscopic observation was the one with the highest morphological diversity. The culture approach, however, revealed seven additional OTUs from five genera (Chloroidium, Coccomyxa, Coenochloris, Pabia, Klebsormidium) and an unidentified trebouxiophyte lineage for that same site; only two OTUs were shared by both approaches. Two OTUs or species were recovered for which references have been isolated only from Antarctica so far. However, the internal transcribed spacer (ITS) sequence differences among them supported they are representing distinct populations of the same species. Within Apatococcus five clearly distinct groups of ITS sequences, each putatively representing a distinct species, were recovered with three or four such ITS types co-occurring at the same study site. Except for the streptophyte Klebsormidium only members of Trebouxiophyceae were detected suggesting these algae may be particularly well-adapted to subaerial habitats.
File Format	HTM / HTML
ISSN	00223646
Issue Number	5
Journal	Journal of Phycology
Volume Number	52
e-ISSN	15298817
Language	English
Publisher	Wiley
Publisher Date	2016-10-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Botany
Content Type	Text
Resource Type	Article
Subject	Plant Science Aquatic Science

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CAROTENOIDS OF SIPHONOUS GREEN ALGAE: A CHEMOTAXONOMICAL STUDY.

A MOLECULAR PHYLOGENY OF ACROCHAETE AND OTHER ENDOPHYTIC GREEN ALGAE (ULVALES, CHLOROPHYTA)(1).

QUANTITATIVE CATION REQUIREMENTS OF SEVERAL GREEN AND BLUE-GREEN ALGAE(2).

THE CAROTENOIDS OF FOUR BLUE-GREEN ALGAE(1).

TAXONOMIC CONFUSION CONCERNING CERTAIN FILAMENTOUS BLUE-GREEN $ALGAE^{1}$

POLYOL PATTERNS IN BIOFILM-FORMING AEROTERRESTRIAL GREEN ALGAE (TREBOUXIOPHYCEAE, CHLOROPHYTA) .

PREPARATION OF METABOLICALLY ACTIVE PROTOPLASTS OF BLUE-GREEN ALGAE(1).

FREEZE-DRYING OF BLUE-GREEN ALGAE FOR ELECTRON MICROSCOPE STUDIES1.

BLUE-GREEN ALGAE FROM BERMUDA WATERS: ECOLOGICALLY SELECTED VARIATIONS OF A SINGLE SPECIES.

Biodiversity of green algae covering artificial hard substrate surfaces in a suburban environment: a case study using molecular approaches.

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CAROTENOIDS OF SIPHONOUS GREEN ALGAE: A CHEMOTAXONOMICAL STUDY.

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QUANTITATIVE CATION REQUIREMENTS OF SEVERAL GREEN AND BLUE-GREEN ALGAE(2).

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Biodiversity of green algae covering artificial hard substrate surfaces in a suburban environment: a case study using molecular approaches.