Nuclear ribosomal DNA internal transcribed spacer regions (ITS1 and ITS2) define discrete biogeographic groups in Cladophora albida (Chlorophyta)

Nucleotide sequences of the nuclear ribosomal DNA internal transcribed spacers (ITS1 and ITS2), the 5.8S, and short stretches of the adjacent 18S and 26S coding regions were determined in isolates from four disjunct Cladophora albida (Huds.) Kütz. populations (NE-America, W-Europe, Japan, and W-Aust...

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Bibliographic Details
Published in:Journal of Phycology
Main Authors: Bakker, F.T., Olsen, J.L., Stam, W.T., van den Hoek, C.
Format: Article in Journal/Newspaper
Language:English
Published: 1992
Subjects:
drosophila-melanogaster
evolution
gene
intergenic region
north-atlantic
nucleotide-sequence
phylogeny
rdna
rna sequence
yeast
Pacific
North Atlantic
Online Access:https://research.wur.nl/en/publications/nuclear-ribosomal-dna-internal-transcribed-spacer-regions-its1-an
https://doi.org/10.1111/j.0022-3646.1992.00839.x
Description
Summary:Nucleotide sequences of the nuclear ribosomal DNA internal transcribed spacers (ITS1 and ITS2), the 5.8S, and short stretches of the adjacent 18S and 26S coding regions were determined in isolates from four disjunct Cladophora albida (Huds.) Kütz. populations (NE-America, W-Europe, Japan, and W-Australia). The two Pacific isolates share nearly identical ITS sequences as do the two Atlantic isolates. In contrast, interoceanic comparisons exhibit a 21% sequence difference. Variation within ITS regions is useful for identification of population groups on a regional or oceanic scale. However, both spacers are characterized by numerous repeat motifs as well as point mutations, which result in alignment problems at the interspecific level within Cladophora

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