Phylogenetic Analysis of a Dataset of Fungal 5.8S rDNA Sequences Shows That Highly Divergent Copies of Internal Transcribed Spacers Reported from Scutellospora castanea Are of Ascomycete Origin

Using a dataset comprising 5.8S rDNA sequences from a wide range of fungi, we show that some sequences reported recently from the arbuscular mycorrhizal (AM) fungus Scutellospora castanea most likely originate from Ascomycetes. Other ITS and 5.8S sequences which were previously reported are confirme...

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Bibliographic Details
Published in:Fungal genetics and biology 1999-12, Vol.28 (3), p.238-244
Main Authors: Redecker, Dirk, Hijri, Mohamed, Dulieu, Hubert, Sanders, Ian R
Format: Article
Language:English
Subjects:
AM fungi
Amino Acid Sequence
arbuscular mycorrhiza
Ascomycete
Ascomycetes
Ascomycota
Ascomycota - genetics
Base Sequence
DNA, Fungal - genetics
DNA, Ribosomal - genetics
Endogonales
Fungi - genetics
Fungi - physiology
genbank/aj012109
genbank/aj012112
genbank/aj012113
genbank/aj239115
genbank/aj239116
genbank/aj239117
genbank/aj239118
genbank/aj239119
genbank/aj239121
genbank/aj239122
genbank/aj239123
genbank/aj239124
genbank/aj239125
genbank/aj242499
genbank/aj242500
genbank/aj243275
genbank/aj243419
genbank/aj245961
Genetics
Glomales
intergenic DNA
internal transcribed spacers
internuclear polymorphism
Life Sciences
Molecular Sequence Data
nucleotide sequences
Phylogeny
Polymorphism, Genetic
ribosomal DNA
RNA, Fungal - genetics
RNA, Ribosomal, 18S - genetics
RNA, Ribosomal, 5.8S - genetics
rRNA 5.8S
Scutellospora castanea
Sequence Analysis, DNA
Spores, Fungal - genetics
vesicular arbuscular mycorrhizae
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Description
Summary:Using a dataset comprising 5.8S rDNA sequences from a wide range of fungi, we show that some sequences reported recently from the arbuscular mycorrhizal (AM) fungus Scutellospora castanea most likely originate from Ascomycetes. Other ITS and 5.8S sequences which were previously reported are confirmed as being clearly of mycorrhizal origin and are variable within one isolate of S. castanea. However, these results mean that previous conclusions which were drawn regarding the heterokaryotic status of AM fungal spores remain unproven. We provide an enlarged 5.8S rDNA dataset that can be used to check ITS sequences for conflicts with well-established phylogenies of the organisms that they were obtained from.
ISSN:1087-1845
1096-0937
DOI:10.1006/fgbi.1999.1173