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Article

Rapid conversion of rDNA intergenic spacer of diploid mutants of rice derived from gamma-ray irradiated tetraploids.

Molecular & general genetics : MGG - 1 Apr 1994

Fukuoka H, Kageyama Y, Yamamoto K, Takeda G

Abstract excerpt

The organization of tandemly repeated sequences of ribosomal DNA (rDNA) in rice mutants derived from gamma-irradiated tetraploids was analyzed. Southern hybridization analysis of nuclear DNA revealed that most of the intergenic spacers (IGSs) in mutant rDNA are replaced concertedly by new molecular species. The new IGSs are produced by the amplification of a subrepeat of about 250 bp. Results obtained from...

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PMID: 7909914
DOI: 10.1007/BF00280313

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