Peroxidase activities in the floral tissues of Tradescantia clone BNL 4430 treated with maleic hydrazide alone, X rays alone, or in combinations.

• Xiao Ling Zhi

  Laboratory of Genetics, Department of Regulation Biology, Faculty of Science, Saitama University

• Ichikawa Sadao

  Laboratory of Genetics, Department of Regulation Biology, Faculty of Science, Saitama University

書誌事項

タイトル別名

• Peroxidase activities in the floral tis

抄録

Changes in peroxidase activity in young inflorescences of Tradescantia clone BNL 4430 were investigated after treating with maleic hydrazide (MH) alone, X rays alone, or MH and X rays in combinations. MH is a promutagen known to be activated into a mutagen in plant cells. The treatments with MH were conducted for 4 h at a fixed concentration of 1 mM, and the X-ray doses applied were 768 to 882 mGy. For the combined treatments, X rays were delivered either 20 h before starting, or 2 or 20 h after completing the 4-h MH treatments. The treatments with MH alone and X rays alone both increased peroxidase activity, as compared with the controls. The combined treatments of delivering X rays 20 h before starting the MH treatments resulted in marked increases in the activity of this enzyme. However, the increases in peroxidase activity after the combined treatments of X-raying 2 h after completing the MH treatments were small, and the activity rather decreased by X-raying 20 h after completing the MH treatments. These results are consistent with our earlier findings that clear synergistic effects of MH and X rays in inducing somatic pink mutations in the stamen hairs of clone BNL 4430 were detected by treating with X rays before MH treatments, whereas antagonistic effects of MH and X rays were often observed by delivering X rays during or after MH treatments (Xiao and Ichikawa, 1995). It is therefore highly likely that peroxidase is certainly involved in the activation of MH into a mutagen, and that the increases and decreases in peroxidase activity after different combined treatments are related to the occurrences of synergism and antagonism, respectively, between MH and X rays.<br>

収録刊行物

• Genes & Genetic Systems

  Genes & Genetic Systems 71 (3), 151-157, 1996

  日本遺伝学会

キーワード

• Genetics
• Molecular Biology
• General Medicine

詳細情報

• CRID: 1390282680422832256
• NII論文ID: 130000061264
• NII書誌ID: AA11077421
• DOI: 10.1266/ggs.71.151
• COI: 1:CAS:528:DyaK28Xmtlygsrw%3D
• ISSN: 18805779
• ISSN: 13417568
• NDL書誌ID: 4163716
• Web Site: http://id.nii.ac.jp/1586/00013813/
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4163716
• Web Site: http://www.jstage.jst.go.jp/article/ggs/71/3/71_3_151/_pdf
• 本文言語コード: en
• データソース種別:
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  • IRDB
  • NDL
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  • CiNii Articles
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