Biogeography of Vaucheria species from European freshwater/soil habitats : implications from chloroplast genomes

Infraspecific heterogeneity of chloroplast genomes was found in four Vaucheria species (V. bursata, V. cruciata, V. geminata, V. prolifera) collected from six European countries. The degree of sequence variability among strains of each of the four species, as demonstrated by restriction site analysi...

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Bibliographic Details
Published in:Hydrobiologia 1996-10, Vol.336 (1-3), p.83-91
Main Authors: LINNE VON BERG, K.-H, KOWALLIK, K. V
Format: Article
Language:English
Subjects:
Algae
Biological and medical sciences
Biological evolution
Freshwater
Fundamental and applied biological sciences. Psychology
Genetics of eukaryotes. Biological and molecular evolution
Plant cytology, morphology, systematics, chorology and evolution
Thallophyta
Vaucheria
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Summary:Infraspecific heterogeneity of chloroplast genomes was found in four Vaucheria species (V. bursata, V. cruciata, V. geminata, V. prolifera) collected from six European countries. The degree of sequence variability among strains of each of the four species, as demonstrated by restriction site analysis, exceeds that of higher plant species or even genera. Mainly single base substitutions and, to a much lesser extent, minor insertions/deletions account for such differences, whereas the linear gene arrangement remains unaffected. Chloroplast genotypes found to be identical among strains collected from different geographical localities are considered the common genotype of a given species. These findings are discussed with respect to evolution, biogeographical distribution and the species concept of this genus.
ISSN:0018-8158
1573-5117
DOI:10.1007/bf00010821