Meiotic behavior of a supernumerary chromosome in Magnaporthe oryzae

I. Chuma, Y. Tosa, M. Taga, H. Nakayashiki, S. Mayama

    研究成果査読

    22 被引用数 (Scopus)

    抄録

    A 1.2-Mb DNA band from an isolate of Magnaporthe oryzae was detected in a pulsed-field gel. A chromosomal entity corresponding to this band was observed at the mitotic metaphase stage. This minichromosome, carrying many transposable elements and two telomeres, was transmitted to ascosporic F1. cultures in a non-Mendelian manner with frequent changes in its size and number. Segregation analysis with RFLP markers indicated that the minichromosome underwent structural rearrangements, such as deletion 'and duplication, not only during meiosis but also after meiosis. An ectopic sister chromatid recombination may cause the size variation of the minichromosomes.

    本文言語English
    ページ(範囲)191-198
    ページ数8
    ジャーナルCurrent Genetics
    43
    3
    出版ステータスPublished - 6月 1 2003

    ASJC Scopus subject areas

    • 遺伝学

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