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Molecular Diversity of Eucaryotic Picoalgae from Three Lakes in Switzerland
Author(s) -
Hepperle Dominik,
Schlegel Ines
Publication year - 2002
Publication title -
international review of hydrobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 1434-2944
DOI - 10.1002/1522-2632(200201)87:1<1::aid-iroh1>3.0.co;2-a
Subject(s) - pyrenoid , biology , chlorophyceae , botany , phylogenetic tree , chlorella , habit , morphology (biology) , phylogenetics , algae , strain (injury) , chlorophyta , zoology , chloroplast , genetics , gene , psychology , psychotherapist , anatomy
The diversity of eucaryotic picoalgae in three Swiss lakes was characterized by light microscopy and these observations were compared with analyses of SSU rDNA sequences. The phylogenetic analyses suggested that seven of the eight investigated strains were either related to Choricystis (Trebouxiophyceae) or Mychonastes (Chlorophyceae). Light microscopic analyses revealed that strains belonging to these two lineages could not be discriminated using morphological characters such as cell morphology, cell shape or growth habit. A single strain which was characterized by the presence of pyrenoids turned out to be closely related to Chlorella sp. The common opinion that eucaryotic freshwater picoalgae are either related to Nannochloris or Chlorella cannot be hold any longer.