Molecular Structure of rDNA Repeat Unit in Magnaporthe grisea

Teruo SONE; Satoru FUKIYA; Megumi KODAMA; Fusao TOMITA

doi:10.1271/bbb.64.1733

Bioscience, Biotechnology, and Biochemistry

Online ISSN : 1347-6947
Print ISSN : 0916-8451

Microbiology & Fermentation Technology Notes

Molecular Structure of rDNA Repeat Unit in Magnaporthe grisea

Teruo SONE, Satoru FUKIYA, Megumi KODAMA, Fusao TOMITA

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Keywords: Pyricularia, rice blast, rDNA, intergenic spacer, tandem repeat

JOURNAL FREE ACCESS

2000 Volume 64 Issue 8 Pages 1733-1736

DOI https://doi.org/10.1271/bbb.64.1733

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Abstract

The 8-kb repeat unit of M. grisea rRNA-encoding DNA (rDNA) was cloned as three subclones, pM50, pM21, and pM86. Nucleotide sequencing of these subclones uncovered the structure of an rDNA repeat unit similar to those of other ascomycetes. The intergenic spacer (IGS) of the rDNA cistron contained a repetitive (R) region, which was rich in two kinds of short tandemly repeated elements.

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