Chromosome evolution among seven Fagopyrum species revealed by fluorescence in situ hybridization (FISH) probed with rDNAs

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概要

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• We determined the numbers and locations of 5S and 45S ribosomal RNA genes (rDNAs) in seven Fagopyrum species, three major and four wild buckwheat species, using fluorescent in situ hybridization (FISH). Although the chromosome numbers between diploid Fagopyrum species were conserved, there was variation in both number and location of rDNA loci. Common buckwheat, F. esculentum, contained three 5S and three 45S rDNA loci allowing us to identify five out of eight pairs of the chromosomes by the rDNA pattern. In addition, F. tataricum and F. cymosum carried one 5S and two 45S rDNA loci, which allowed us to identify three out of eight pairs of the chromosomes in the two species. The rDNA loci of four wild buckwheat species, F. urophyllum, F. pleioramosum, F. callianthum and F. leptopodum showed diversified location. The distribution of the rDNA loci implies a chromosome evolution in Fagopyrum via larger structural rearrangements such as inversions and translocations. The numbers and the locations of rDNAs support the phylogenetic relationships of buckwheat based on the data of internal transcribed spacer (ITS) region of rDNA.

• 財団法人染色体学会の論文

著者

• TANAKA Hiroyuki

  Laboratory of Marine Biotechnology and Microbiology, Graduate School of Fisheries Sciences, Hokkaido

• Kikuchi Shinji

  Laboratory Of Plant Genetics And Breeding Science Faculty Of Agriculture Tottori University

• Matsui Katsuhiro

  National Agricultural Research Center for Kyushu Okinawa Region

• Ohnishi Ohmi

  Laboratory of Crop Evolution, Graduate School of Agriculture, Kyoto University

• Tsujimoto Hisashi

  Laboratory of Plant Genetics and Breeding Science, Faculty of Agriculture, Tottori University

• Tsujimoto Hisashi

  Laboratory Of Plant Genetics And Breeding Science Faculty Of Agriculture Tottori University

• Ohnishi Ohmi

  Laboratory Of Crop Evolution Graduate School Of Agriculture Kyoto University

• Tsujimoto Hisashi

  Lab. Of Plant Genetics And Breeding Sci. Fac. Of Agriculture Tottori Univ.

• Tsujimoto Hisashi

  Tottori Univ. Tottori Jpn

• Tsujimoto Hisashi

  Laboratory Of Plant Genetics And Breeding Faculty Of Agriculture Tottori University

• Tanaka Hiroyuki

  Laboratory Of Plant Genetics And Breeding Science Faculty Of Agriculture Tottori University

• Kikuchi Shinji

  Laboratory Of Genetics And Plant Breeding Graduate School Of Horticulture Chiba University

• Tanaka Hiroyuki

  Laboratory Of Bioresponses And Regulation United Graduate School Of Drug Discovery And Medical Infor

• Tanaka Hiroyuki

  Lab. Of Plant Genetics Fac. Of Agriculture Tottori Univ.

• Tanaka Hiroyuki

  Laboratory Of Plant Genetics Faculty Of Agriculture Tottori University

• Matsui Katsuhiro

  National Agricultural And Food Research Organization National Agricultural Research Center For Kyushu Okinawa Region

• Tsujimoto Hisashi

  Laboratory Of Molecular Breeding And Land Research Center Tottori University

• TSUJIMOTO Hisashi

  Laboratory of Genetics, Faculty of Agriculture, Kobe University

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