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Polymorphic minisatellites in the mitochondrial DNAs of Oryza and Brassica

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Title: Polymorphic minisatellites in the mitochondrial DNAs of Oryza and Brassica
Authors: Honma, Yujiro Browse this author
Yoshida, Yu Browse this author
Terachi, Toru Browse this author
Toriyama, Kinya Browse this author
Mikami, Tetsuo Browse this author →KAKEN DB
Kubo, Tomohiko Browse this author →KAKEN DB
Keywords: Plant mitochondria
mitochondrial genome
variable number of tandem repeat loci
mitochondrial evolution
Issue Date: Aug-2011
Publisher: Springer Berlin / Heidelberg
Journal Title: Current Genetics
Volume: 57
Issue: 4
Start Page: 261
End Page: 270
Publisher DOI: 10.1007/s00294-011-0345-3
PMID: 21562713
Abstract: Polymorphic analyses of angiosperm mitochondrial DNA are rare in comparison with chloroplast DNA, because few target sequences in angiosperm mitochondrial DNA are known. Minisatellites, a tandem array of repeated sequences with a repeat unit of 10 to similar to 100 bp, are popular target sequences of animal mitochondria, but Beta vulgaris is the only known angiosperm species for which such an analysis has been conducted. From this lack of information, it was uncertain as to whether polymorphic minisatellites existed in other angiosperm species. Ten plant mitochondrial DNAs were found to contain minisatellite-like repeated sequences, most of which were located in intergenic regions but a few occurred in gene coding and intronic regions. Oryza and Brassica accessions were selected as models for the investigation of minisatellite polymorphism because substantial systematic information existed. PCR analysis of 42 Oryza accessions revealed length polymorphisms in four of the five minisatellites. The mitochondrial haplotypes of the 16 Oryza accessions with chromosomal complement (genome) types of CC, BBCC and CCDD were identical but were clearly distinguished from BB-genome accessions, a result consistent with the notion that the cytoplasmic donor parent of the amphidiploid species might be the CC-genome species. Twenty-nine accessions of six major cultivated species of Brassica were classified into five mitochondrial haplotypes based on two polymorphic minisatellites out of six loci. The haplotypes of Brassica juncea and Brassica carinata accessions were identical to Brassica rapa and Brassica nigra accessions, respectively. The haplotypes of Brassica napus accessions were heterogeneous and unique, results that were consistent with previous studies.
Rights: The original publication is available at
Type: article (author version)
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 久保 友彦

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