Genomic Organization of the S-Locus Region of Brassica

Hiroshi SHIBA; Masayuki KENMOCHI; Minoru SUGIHARA; Megumi IWANO; Shinji KAWASAKI; Go SUZUKI; Masao WATANABE; Akira ISOGAI; Seiji TAKAYAMA

doi:10.1271/bbb.67.622

Biochemistry & Molecular Biology Notes

Genomic Organization of the S-Locus Region of Brassica

Hiroshi SHIBA, Masayuki KENMOCHI, Minoru SUGIHARA, Megumi IWANO, Shinji KAWASAKI, Go SUZUKI, Masao WATANABE, Akira ISOGAI, Seiji TAKAYAMA

Author information

Hiroshi SHIBA
Graduate School of Biological Sciences, Nara Institute of Science and Technology
Masayuki KENMOCHI
Graduate School of Biological Sciences, Nara Institute of Science and Technology
Minoru SUGIHARA
Graduate School of Biological Sciences, Nara Institute of Science and Technology
Megumi IWANO
Graduate School of Biological Sciences, Nara Institute of Science and Technology
Shinji KAWASAKI
National Institute of Agrobiological Resources
Go SUZUKI
Division of Natural Science, Osaka Kyoiku University
Masao WATANABE
Faculty of Agriculture, Iwate University
Akira ISOGAI
Graduate School of Biological Sciences, Nara Institute of Science and Technology
Seiji TAKAYAMA
Graduate School of Biological Sciences, Nara Institute of Science and Technology

Keywords: self-incompatibility, genomic organization, intergenic region, repetitive sequence, S-locus

JOURNAL FREE ACCESS

2003 Volume 67 Issue 3 Pages 622-626

DOI https://doi.org/10.1271/bbb.67.622

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Abstract

To gain some insights into the structure of the S-locus and the mechanisms that have kept its diversity, a 75-kb genomic fragment containing the self-incompatibility (S) locus region was isolated from the S₁₂-haplotype of Brassica rapa and compared with those of other S-haplotypes. The region around the S determinant genes was highly polymorphic and filled with S-haplotype-specific intergenic sequences. The diverse genomic structure must contribute to the suppression of recombination at the S-locus.

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