1994年9月
DIFFERENT CHARACTERISTICS OF ROOTS IN THE CADMIUM-TOLERANCE AND CD-BINDING COMPLEX-FORMATION BETWEEN MONOCOTYLEDONOUS AND DICOTYLEDONOUS PLANTS
JOURNAL OF PLANT RESEARCH
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- 巻
- 107
- 号
- 1087
- 開始ページ
- 201
- 終了ページ
- 207
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1007/BF02344245
- 出版者・発行元
- BOTANICAL SOC JAPAN
Effects of Cd2+ on growth and Cd-binding complex formation in roots were examined with various seedlings of mono- and dicotyledonous plants. Maize, oat, barley and rice exhibited the greater tolerance to Cd2+ (100 muM) than did azuki bean, cucumber, lettuce, pea, radish, sesame and tomato (10-30 muM). Azuki bean was the most sensitive of Cd2+ (<10 muM). Under these Cd-treatments, cereal roots accumulated Cd2+ in the cytoplasmic fractions and transported Cd2+ into the same fractions of shoot tissues, to larger extents than did dicotyledonous roots. Cereal roots synthesized a Cd-binding complex containing phytochelatins in the cytoplasmic fractions, depending upon Cd2+ concentrations applied (30-100 muM). Such a complex was not detected from the same fractions of dicotyledonous roots treated with Cd2+. These results suggest that the Cd-binding complex formation has an important role in the tolerance of cereal roots against Cd2+.
- リンク情報
- ID情報
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- DOI : 10.1007/BF02344245
- ISSN : 0918-9440
- CiNii Articles ID : 10006437923
- Web of Science ID : WOS:A1994PJ54000001